EMS Technologies 0A5DATA1900 pcs data transmitter User Manual 03 0096 Manual

EMS Technologies pcs data transmitter 03 0096 Manual

users manual

5015 B.U. Bowman Drive Buford, GA 30518 USA Voice: 770-831-8048 Fax: 770-831-8598 Type Acceptance Test Report Broad Band PCS Transceiver FCC ID: DNY0A5DATA1900 FCC Rule Part: 24E ACS Report Number: 03-0096-24TA Manufacturer: EMS Wireless Model: DataNex Installation and Operators Guide
EMS Wireless DataNex™ Data-20 Digital Radio User Reference Manual 2850 Colonnades Court NW Norcross, GA 30071 Phone: 770-582-0555 Fax: 770-729-0075
Table of Contents ii DataNex EMS Wireless, DATA-20 Digital Radio Document Number: Rev: A Last Saved NXE1 Manual Dwg # ; Revision Levels: Section Drawing No: REV Revised / Released Reason Data-20 A SN NEW
iii Table of Contents DataNex EMS Wireless, DATA-20 Digital RadioWARNINGS, CAUTIONS, AND GENERAL NOTES This product conforms to FCC Part 15. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help.” In accordance with FCC regulations regarding human exposure to radiofrequency energy, this device shall be installed such that a minimum separation distance of 20cm is maintained between it and general population. The antennas used for this transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. This Class B digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Cet appareillage numérique de la classe B répond à toutes les exigences de l'interférence canadienne causant des règlements d'équipement. L'opération est sujette aux deux conditions suivantes: (1) ce dispositif peut ne pas causer l'interférence nocive, et (2) ce dispositif doit accepter n'importe quelle interférence reçue, y compris l'interférence qui peut causer l'opération peu désirée.
Table of Contents iv DataNex EMS Wireless, DATA-20 Digital Radio Table of Contents 1 SYSTEM DESCRIPTION .......................................................................................................................1-1 1.1 Introduction ..................................................................................................................................................... 1-1 1.2 System Features ............................................................................................................................................... 1-1 1.3 Typical Configurations.................................................................................................................................... 1-2 1.3.1 Data Rate and Interface ............................................................................................................................. 1-2 1.3.2 Standalone Operation ................................................................................................................................ 1-2 1.3.3 Hot Standby (Protected) Operation............................................................................................................ 1-3 1.4 Regulatory Notices........................................................................................................................................... 1-3 1.5 System Description (QAM)............................................................................................................................. 1-4 1.5.1 Introduction ............................................................................................................................................... 1-4 1.5.2 QAM Modulator/IF Upconverter............................................................................................................... 1-5 1.5.3 RF Upconverter ......................................................................................................................................... 1-6 1.5.4 Power Amplifier (PA) ............................................................................................................................... 1-7 1.5.5 RF Downconverter .................................................................................................................................... 1-7 1.5.6 QAM Demodulator/IF Downconverter ..................................................................................................... 1-8 2 INSTALLATION .....................................................................................................................................2-1 2.1 Unpacking ........................................................................................................................................................ 2-1 2.2 Notices............................................................................................................................................................... 2-1 2.3 Rack Mount...................................................................................................................................................... 2-2 2.4 Duplexer: Internal/External ........................................................................................................................... 2-2 2.5 Rear Panel Connections & Indicators ........................................................................................................... 2-3 2.6 Power Requirements ....................................................................................................................................... 2-5 2.6.1 Power Supply Card Slot Details ................................................................................................................ 2-5 2.6.2 AC Line Voltage........................................................................................................................................ 2-5 2.6.3 DC Input Option ........................................................................................................................................ 2-6 2.6.4 Fusing ........................................................................................................................................................ 2-6 2.7 Power-Up Setting............................................................................................................................................. 2-6 2.8 Data Interface .................................................................................................................................................. 2-8 2.8.1 4xE1/T1 MUX Channel Configurations.................................................................................................... 2-8 2.9 Hot Standby (Protected) Configuration ........................................................................................................ 2-9 2.9.1 Hot/Cold Standby Modes ........................................................................................................................ 2-10 2.9.2 Hot Standby Control using the TP64...................................................................................................... 2-11 2.9.3 Hot Standby Control with Single Unit..................................................................................................... 2-14 2.10 Site Installation .............................................................................................................................................. 2-15 2.11 Antenna/Feed System.................................................................................................................................... 2-16 2.11.1 Antenna Installation................................................................................................................................. 2-16 3 FRONT PANEL OPERATION ...............................................................................................................3-1 3.1 Introduction ..................................................................................................................................................... 3-1 3.2 Front Panel Operation .................................................................................................................................... 3-1 3.2.1 LCD Display.............................................................................................................................................. 3-2 3.2.2 Cursor and Screen Control Buttons ........................................................................................................... 3-2 3.2.3 LED Status Indicators................................................................................................................................ 3-3
v Table of Contents DataNex EMS Wireless, DATA-20 Digital Radio3.2.4 Screen Menu Tree Structure ...................................................................................................................... 3-3 3.3 Main Menu....................................................................................................................................................... 3-4 3.3.1 Launch Screens.......................................................................................................................................... 3-5 3.4 Screen Menu Summaries ................................................................................................................................ 3-9 3.4.1 Meter ......................................................................................................................................................... 3-9 3.4.2 System: Card View.................................................................................................................................... 3-9 3.4.3 System: Power Supply............................................................................................................................. 3-10 3.4.4 System: Info............................................................................................................................................. 3-10 3.4.5 System: Basic Card Setup........................................................................................................................ 3-11 3.4.6 System: Factory Calibration .................................................................................................................... 3-12 3.4.7 System: Unit-Wide Parameters................................................................................................................ 3-13 3.4.8 System: Date/Time .................................................................................................................................. 3-14 3.4.9 System: Transfer...................................................................................................................................... 3-14 3.4.10 External I/O ............................................................................................................................................. 3-15 3.4.11 Alarms ..................................................................................................................................................... 3-16 3.4.12 Faults ....................................................................................................................................................... 3-17 3.4.13 G821 Parameters...................................................................................................................................... 3-17 3.4.14 QAM Modem Status................................................................................................................................ 3-18 3.4.15 QAM Radio TX Status ............................................................................................................................ 3-21 3.4.16 QAM Radio RX Status ............................................................................................................................ 3-22 3.4.17 QAM Radio TX Control.......................................................................................................................... 3-22 3.4.18 QAM Radio RX Control.......................................................................................................................... 3-23 3.4.19 QAM Modem Configure ......................................................................................................................... 3-24 3.4.20 QAM Radio TX Configure...................................................................................................................... 3-30 3.4.21 QAM Radio RX Configure...................................................................................................................... 3-31 3.5 NMS/CPU PC Configuration Software ....................................................................................................... 3-31 3.6 Up/Down Converter: Frequency Adjust...................................................................................................... 3-31 3.6.1 TX Frequency Adjust .............................................................................................................................. 3-31 3.6.2 AFC Level—RX...................................................................................................................................... 3-32 4 DATA INTERFACE CABLES ................................................................................................................4-1 5 APPENDIX .............................................................................................................................................5-1 5.1 Abbreviations & Acronyms ............................................................................................................................ 5-1 5.2 Conversion Chart ............................................................................................................................................ 5-3
1 System Description 1.1 Introduction The DATA-20 is a spectrum-scalable point-to-point digital radio that can deliver 8Mbps of data. Advanced modulation and digital processing techniques allow one radio to deliver user-defined rates from 512 kbps to 8Mbps The product is an all-digital, open-architecture, modular system (see Figure 1-1 below). The versatility and power of the product comes from a complete range of “plug and play” personality modules. Figure 1-1. DATA-20 Modular Open Architecture The high spectral efficiency of the DATA-20 is achieved by user-selectable QPSK, or 16 QAM. Powerful Reed-Solomon error correction, coupled with a 20-tap adaptive equalizer, provides unsurpassed signal robustness in hostile RF environments. 1.2 System Features  Selectable Rates: 512 kbps to 8.448 Mbps  Selectable Spectral Efficiency of 1.6 or 3.2 bps/Hz  QPSK & QAM Modulation  Powerful Reed-Solomon Error Correction with up to 12 level interleaver  Built-in Adaptive Equalizer  Internal Duplexer or external for hot standby system  Independent Synthesized Tx & Rx units
System Description 1-2 DataNex EMS Wireless, DATA-20 Digital Radio  Auto / Manual Power Control of up to 20 dB  Built-in Auto Pin Diode Attenuator for powerful signals  Accurate Digital Filtering for adjacent channel rejection  386 Processor-based controller  Extensive LCD screen status monitoring  Built-in BER Meter  Built-in NMS  Monitoring & Time Stamping  Monitor up to 4 external Analog & Digital I/O  Readout of RSL in dBm  Completely modular 1.3 Typical Configurations 1.3.1 Data Rate and Interface Table 1-1 provides basic data channel capabilities for the DATA-20. See Section 2 (Installation) for more detailed information. Table 1-1.DATA-20 Data Channel Configurations Data Rate MUX Hardware Channels Interface(s) 1.5 Mbps-8 Mbps 2 or 4 x E1/T1 2 or 4 G.703, E1/T1 512 kbps-2 Mbps QAM Modem 1 Fractional E1/T1 512 kbps-2 Mbps QAM Modem 1 V35, RS449 1.3.2 Standalone Operation The DATA-20 may be used as a standalone digital radio with an interface in the modem or with a Multiplexer with 2 or 4 E1/T1 interfaces. The Multiplexer has an overhead channel which can be utilized by the customer
1-3 System Description DataNex EMS Wireless, DATA-20 Digital Radio1.3.3 Hot Standby (Protected) Operation The product in a hot standby configuration as depicted in Fig.1-2, using two DATA-20 radios and a TP64 transfer panel. TX RFRELAYDUPLEXERDATASWITCH/TRANSFERLOGICTP64 TRANSFERPANELData-20 RADIO AData-20 RADIO BDATATXTXRX RFSPLITTERRXRXANTENNADATADATACNTLCNTL Figure 1-2. DATA-20 Hot Standby – Two Discrete Radios with Transfer Panel 1.4 Regulatory Notices FCC Part 15 Notice This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his expense. Any external data or audio connection to this equipment must use shielded cables.
System Description 1-4 DataNex EMS Wireless, DATA-20 Digital Radio 1.5 System Description (QAM) 1.5.1 Introduction The product is a full-duplex digital radio. The following sections describe the TX system, RX system, followed by sub-system components. Please reference the accompanying block diagrams for clarification. We will follow the typical end-to-end progression of a radio system starting with the TX baseband inputs, to the QAM modulator, followed by the upconversion process and the power amplifier. We then proceed to the RX preamplifier input, the downconversion process, followed by the QAM demodulator and baseband outputs. RF LinearPABackPlAntenna12.8 MHzData, Address, I 2C, SPI BusDuplexerFront PanelRibbon CableUni v er sa lInput AC(DC Optional) SystemMonitor(A/D)RF ModuleDown ConverterUp ConverterIF CardDown ConverterUp Converter400 MHz-1.5 GHzTXRX70 MHzQAM ModemDemodulatorMod ulat orIntelligentMUX+5/+15 VDC130 WattPowerSupplyBarGraph4 x 20 LCD DisplayStatus LEDsFrontPanelSystem CPUNMSRemote I/ OFront Panel InterfaceSerial PC InterfaceStatus/Command/Control I/O4 PortData/VoiceInterfaceChannel 1Channel 2Channel 3Channel 4Tr un kTransfer Panel I/OQAM Modem Module+15 VDCPA Control/CurrentSense Figure 1-3. DATA-20 System Block Diagram . All modules (excluding the Front Panel and Power Amplifier) are interconnected via the backplane that traverses the entire width of the unit. The backplane contains the various communication buses as well as the PA (Power Amplifier) control and redundant transfer circuitry. The power supply levels and status are monitored on the backplane and the NMS/CPU card processes the data.
1-5 System Description DataNex EMS Wireless, DATA-20 Digital RadioFigure 1-4. Location of theDATA-20Backplane and Power Amplifier The NMS/CPU card incorporates microprocessor and FPGA logic to configure and monitor the overall operation of the system via front panel controls, LCD screen menus, status LEDs and the bar graph display. Module settings are loaded into the installed cards and power-up default settings are stored in non-volatile memory. LCD screen menu software is uploaded into memory, providing field upgrade capability. A Windows-based PC interface is available for connection at the rear panel DATA port. 1.5.2 QAM Modulator/IF Upconverter INTERLEAVERAMQAMENCODERNCO DIGITALPOTOCXO12.8 MHzFPGAFPGAEEPROMuCEEPROMMICROCONTROLLERLEVELTRANSLATORRS232TRANSLATORQAMDECODERINTERLEAVERAMRATE CONVERTERPLL FIFOSPIIFSYNTH IFSTATUSIF OUTIF REFCLK OUTTRUNKI/OTXDBUS DATA & CLKINBUSREF CLKOUTBUSI2C INRXDIF INAGCBUS DATA & CLKOUTDEBUGLEDSTATUSREF CLKNOCONNECTIONuC BUSLEGEND Figure 1-5. QAM Modem Block Diagram The QAM (Quadrature Amplitude Modulation) Modulator is the transmit portion of the QAM Modem card. The QAM Modem also houses the IF Up/Down Converter. The QAM Modulator utilizes the upconverter portion of the IF daughter card. The QAM Modulator accepts the aggregate data stream via the backplane (see Figure 1-5 above). The module performs modulation at a carrier frequency of 6.4 MHz, adding FEC (Forward Error Correction) bits while interleaving the blocks of data. The result is a very spectrally efficient, yet robust linear modulation scheme. This process requires an ultra-stable
System Description 1-6 DataNex EMS Wireless, DATA-20 Digital Radio master clock provided by an OCXO (oven controlled crystal oscillator) that is accurate to within 0.1 ppm. BPF70 MHzBPF6.4 MHzIF Output70 MHz-10 dBmPLLLoopFilter VCO76.4 MHz PLLDataClkEnblRefIF Input6.4 MHz-20 dBmSynth LevelSynthLockExciter Level Figure 1-6. IF Upconverter Block Diagram The resultant carrier is translated up to 70 MHz by the IF Upconverter (see Figure 1-6). This is accomplished by a standard mixing of the carrier with a phase-locked LO. A 70 MHz SAW filter provides an exceptional, spectrally-clean output signal. 1.5.3 RF Upconverter 12.8 MHz Ref Osc BPF70 MHz IF Input uPRFA Fwd Pwr Level IPA Level Synth LevelTemp Sense Synth LockRF Output TX ALCBPF 70 MHz BPF DiplexerNMS Synth DataSynth EnblPLL Loop Filter VCOPLLSynth Lock Synth LevelData Clk Enbl Ref RFA Rev Pwr Level Synth Clk
1-7 System Description DataNex EMS Wireless, DATA-20 Digital RadioFigure 1-7. RF Upconverter Block Diagram The IF output carrier of the IF Upconverter daughter card is fed to the transmit portion of the RF Module via an external (rear panel) semi-rigid SMA cable. This module performs the necessary upconversion to the RF carrier (see Figure 1-7). There is an on-board CPU for independent control of the critical RF parameters of the system. Since this is a linear RF processing chain, an automatic leveling control loop (ALC) is implemented here to maintain maximum available power output (and therefore maximum system gain). The ALC monitors the PA forward power (FWD) output sample, and controls the upconverter gain per an algorithm programmed in the CPU. The ALC also controls the power-up RF conditions of the transmitter output. 1.5.4 Power Amplifier (PA) The Power Amplifier (PA) is a separate module that is mounted to a heat sink and is fan-cooled for reliable operation. The PA is a design for maximum linearity in an amplitude modulation-based system. 1.5.5 RF Downconverter BPF Diplexer70 MHzRF InputRF AGCIF AmpIF Output70 MHzto QAMDemodPreampALCLoop AmpALCDetAttenBPF70 MHzPLLLoopFilter VCOPLLSynthLockDataClkEnblRefALC Control12.8 MHz Ref OscuPSynth LevelSynth LockNMSSynth ClkSynth DataSynth Enbl Figure 1-8. RF Downconverter Block Diagram The receiver handles the traditional RF to IF conversion from the carrier to 70 MHz (see Figure 1-8). Considerations are given to image rejection, intermodulation performance, dynamic range, agility, and survivability. A separate AGC loop was assigned to the RF front end to prevent intermodulation and saturation problems associated with reception of high level undesirable
System Description 1-8 DataNex EMS Wireless, DATA-20 Digital Radio interfering RF signals resulting from RF bandwidth that is much wider than the IF bandwidth. The linear QAM scheme is fairly intolerant of amplifier overload. 1.5.6 QAM Demodulator/IF Downconverter IF Input70 MHzBPF70 MHzBPF6.4 MHzAGC ControlPLLLoopFilter VCO76.4 MHz PLLDataClkEnblRefIF Output6.4 MHz-10dBmSynth LevelSynthLock Figure 1-9. IF Downconverter Block Diagram The QAM (Quadrature Amplitude Modulation) Demodulator is the receive portion of the QAM Modem card. The QAM Modem also houses the IF Up/Down Converter. The QAM Demod utilizes the downconverter portion of the IF daughter card. The IF Downconverter receives the 70 MHz carrier from the receiver portion of the RF Module via an external semi-rigid cable and directly converts the carrier to 6.4 MHz by mixing with a low-noise phase-locked LO (see Figure 1-9). System selectivity is achieved through the use of a 70 MHz SAW filter. The QAM Demod receives and demodulates the 6.4 MHz carrier (see Figure 1-7). The demodulation process includes the FEC implementation and de-interleaving that matches the QAM modulator in the transmitter, and the critical “data assisted recovery” of the clock. This process requires an ultra-stable master clock provided by an OCXO (oven controlled crystal oscillator). The output is an aggregate data stream that is distributed to the trunk port for if the data input/output is out of the Modem, or to the backplane for connection to the multiplexer connected on the backplane.
2 Installation 2.1 Unpacking The following is a list of all included items. Description Quantity Digital Radio (3RU chassis) 1 Rack Ears (with hardware) 4 Extender Card (Universal QAM) — optional 1 Power Cord (IEC 3 conductor for AC, 2-wire for DC) 2 Manual ( or Soft copy on a CD) 1 Test Data Sheet (customer documentation) 1 Be sure to retain the original boxes and packing material in case of return shipping. Inspect all items for damage and/or loose parts. Contact the shipping company immediately if anything appears damaged. If any of the listed parts are missing, call the distributor or the factory immediately to resolve the problem. 2.2 Notices CAUTION DO NOT OPERATE UNITS WITHOUT AN ANTENNA, ATTENUATOR, OR LOAD CONNECTED TO THE ANTENNA PORT. DAMAGE MAY OCCUR TO THE TRANSMITTER DUE TO EXCESSIVE REFLECTED RF ENERGY. ALWAYS ATTENUATE THE SIGNAL INTO THE RECEIVER ANTENNA PORT TO LESS THAN 3000 MICROVOLTS. THIS WILL PREVENT OVERLOAD AND POSSIBLE DAMAGE TO THE RECEIVER MODULE WARNING
Installation 2-2 DataNex EMS Wireless, DATA-20 Digital Radio HIGH VOLTAGE IS PRESENT INSIDE THE POWER SUPPLY MODULE WHEN THE UNIT IS PLUGGED IN. REMOVAL OF THE POWER SUPPLY CAGE WILL EXPOSE THIS POTENTIAL TO SERVICE PERSONNEL. TO PREVENT ELECTRICAL SHOCK, UNPLUG THE POWER CABLE BEFORE SERVICING. UNIT SHOULD BE SERVICED BY QUALIFIED PERSONNEL ONLY. PRE-INSTALLATION NOTES Always pre-test the system on the bench in its intended configuration prior to installation at a remote site. Avoid cable interconnection length in excess of 1 meter in strong RF environments. We highly recommend installation of lightning protectors to prevent line surges from damaging expensive components. 2.3 Rack Mount The product is normally rack-mounted in a standard 19” cabinet. Leave space clear above (or below) the unit for proper air ventilation of the card cage. The rack ears are typically mounted as shown in Figure 2-1. Other mounting methods are possible by changing the orientation of the rack ears. Figure 2-1.DATA-20 Typical Rack Mount Bracket Installation 2.4 Duplexer: Internal/External Various duplexers, both internal and external, can be utilized. For current duplexers utilized with the radios, please see the Appendix.
2-3 Installation DataNex EMS Wireless, DATA-20 Digital Radio2.5 Rear Panel Connections & Indicators Please refer to the Figure 2-2 for a pictorial of a typical product rear panel (internal duplexer). Following is a descriptive text of the connections and LED indicators. Figure 2-2.DATA-20 Rear Panel Connections Power Supply: Inputs: AC: Universal Input, 100-240V, 50/60 Hz; IEC 3 conductor DC: 24v/48v (Isolated Input); 2 pin socket (custom) Status LED: +12V: Green LED indicates +12 volt supply OK +5V: Green LED indicates +5 volt supply OK NMS Card I/O Port: RS232 PC access; 9 pin D-sub (female) Reset Switch: Activates hard system reset Status LED: Green LED Indicates CPU OK
Installation 2-4 DataNex EMS Wireless, DATA-20 Digital Radio QAM Modem I/O Ports: TRUNK: Data I/O 15pin D-sub (female) HD RF Connectors: 70 MHz OUT: SMA (female); Modulator output 70 MHz IN: SMA (female); Demod input Status LED: MOD: GREEN indicates Modulator Lock DEMOD: GREEN indicates Demod Lock Up/Down Converter Module RF Connectors: TO PA: SMA (female), Upconverter output to be applied to linear Power Amplifier module (internal to radio). 70 MHz IN: SMA (female), Modulated IF input from QAM Modulator. RF IN: SMA (female), Receiver input. 70 MHz OUT: SMA (female); Downconverter output to Modulator input Status LED: TX LOCK: GREEN indicates TX AFC LOCK Flashing RED indicates LOSS OF TX LOCK RX LOCK: GREEN indicates RX AFC LOCK and strong RX signal YELLOW indicates RX AFC LOCK and nominal RX signal RED (continuous) indicates RX AFC LOCK and weak RX signal RED (flashing) indicates LOSS OF RX LOCK
2-5 Installation DataNex EMS Wireless, DATA-20 Digital RadioRF I/O Panel RF Connectors: ANTENNA: Type N (female), RF cabling from internal PA module. PA IN: SMA (female), RF cabling to internal PA module. RX OUT: SMA (female), RF cabling from internal duplexer. SEMI-RIGID CABLE Ensure that the cables are secure and tightly attached. Check for any damage (kinks or breaks in the copper sheath). 2.6 Power Requirements 2.6.1 Power Supply Card Slot Details The leftmost slot in the DATA-20 card cage (as viewed from the rear of the unit) is designated as the “PRIMARY A” power supply. The main bus voltages (+5 and +/-12) are summed in the backplane and provide the supply the plug-in modules. NOTE: The front panel LCD screen displays the system supply voltages and the nomenclature follows the physical location of the power supply modules. 2.6.2 AC Line Voltage The DATA-20 uses a high reliability, universal input switching power supply capable of operating within an input range of: 100 - 240 VAC; 50/60 Hz The power supply module is removable from the unit and a perforated cage protects service personnel from high voltage. The power supply is fan cooled due to high power consumption by the PA. CAUTION High voltage is present when the unit is plugged in. To prevent electrical shock, unplug the power cable before servicing. Power supply module should be serviced by qualified personnel only.
Installation 2-6 DataNex EMS Wireless, DATA-20 Digital Radio 2.6.3 DC Input Option An optional DC input power supply is available for the DATA-20; using high reliability, DC-DC converter(s) capable of operation within the following input ranges (dependent upon nominal input rating): Nominal DC Input Operating Input Range 24 Volt: 20 – 28 VDC 48 Volt: 32 – 64 VDC The DC input is isolated from chassis ground and can be operated in a positive or negative ground configuration. The power supply module is removable from the unit and no high voltages are accessible. 2.6.4 Fusing For AC modules, the main input fuse is located on the switching power supply mounted to the carrier PC board and the protective cage may be removed for access to the fuse. For DC modules, all fusing is located on the carrier PC board. Always replace any fuse with same type and rating. Other fuses are present on the board, and are designed for output fail-safe protection of the system. All output fuse values are printed on the backside of the PC board to aid in replacement. NOTE: If a fuse does blow in operation, investigate the possible cause of the failure prior to replacing the fuse, as there is adequate built-in protection margin. 2.7 Power-Up Setting As shipped, the DATA-20 will radiate into the antenna upon power-up, THIS ASSUMES THAT THE ANTENNA LOAD IS GOOD (LOW VSWR). If the VSWR of the load causes a high reverse power indication at the PA, the red VSWR LED will light and the transmitter will cease radiating. This is called the “AUTO” setting in the QAM RADIO CONTROL screen (see below). The LCD screen (“QAM RADIO TX CONTROL”) selects the power-up state and controls the radiate function of the TX unit. Go to the MAIN MENU:
2-7 Installation DataNex EMS Wireless, DATA-20 Digital RadioMETERQAM RADIOData-20 Main MenuSYSTEMALARMS/FAULTSScroll Scroll to QAM Radio, press ENTER. Select Launch Screen for CONTROL TX, press ENTER: CONTROLQAM Radio LaunchTXATX RadiateQAM Radio TX ControlAUTO Verify the AUTO setting. AUTO: Transmitter will protect its PA by “folding back” the ALC under bad load VSWR condition (default setting) ON: Transmitter will remain in radiate at full power under all antenna port conditions (not recommended). OFF: Transmitter in standby mode.
Installation 2-8 DataNex EMS Wireless, DATA-20 Digital Radio 2.8 Data Interface 2.8.1 4xE1/T1 MUX Channel Configurations Trunk I/O Async Data ChannelChannel 3/4 (E1/T1)Channel 1/2 (E1/T1)Aux Channel 1 Aux Channel 2 Figure 2-3. 4XE1/T1 MUX Panel The 4xE1/T1 MUX is a high speed card (up to 8 MBPS) that has a total of 7 ports. Table 2-1 summarizes the capabilities. EMS
2-9 Installation DataNex EMS Wireless, DATA-20 Digital RadioTable 2-1.DATA-20 4xE1/T1 MUX Data Channel Configurations Chnl Data Rate 4xE1 (BPS) Data Rate 4xT1 (BPS) Data Rate 2xE1 (BPS) Data Rate 2xT1 (BPS) Data Rate 1xE1 (BPS) Data Rate 1xT1 (BPS) Inter-face 1 2.048 K 1.544 K 2.048 K 1.544 K 2.048 K 1.544 K G.703, DSX-1 2 2.048 K 1.544 K 2.048 K 1.544 K --- --- G.703, DSX-1 3 2.048 K 1.544 K --- --- --- --- G.703, DSX-1 4 2.048 K 1.544 K --- --- --- --- G.703, DSX-1 * Aux1 128 K 96 K 64 K 48 K 32 K 24 K V.35, RS449 * Aux2 128 K 96 K 64 K 48 K 32 K 24 K V.35, RS449 ASYNC Data 9600 7200 4800 3600 2400 1800 RS232 * AUX Channels 1-2 can be combined to form 2xCh.1 or 2xCh.2 (i.e., in 4xE1 mode, AUX could be a single channel of 256 KBPS) 2.9 Hot Standby (Protected) Configuration The DATA-20 may be installed in a hot standby (protected) configuration. This consists of twoDATA-20 chassis with a TP64 transfer panel (Figure 2-5) Transfer Panel Connection The usual hot standby configuration uses an external duplexer. This minimizes RF losses and provides independent TX and RX module switching. A duplexer should already be mounted on the TP64 chassis. Alternatively, rack mounted duplexers (typical for tighter channel spacings) may be provided. The connections are the same, although the physical location is different. A power divider (used to split the signal equally to two receivers) is required in this mode. The input to the power divider connects directly to the duplexer with an N-N (male) adapter. See Figure 2-4 for installation details.
Installation 2-10 DataNex EMS Wireless, DATA-20 Digital Radio ANTENNARJ45RJ45DATADATADATATP64 Top ViewTP64 Rear PanelData-20 Radio BDATA-20 Radio A Figure 2-4.DATA-20 Hot Standby – with Transfer Panel 2.9.1 Hot/Cold Standby Modes Hot Standby ( *preferred) Hot standby leaves both transmitters in the RADIATE ON condition, and the transfer logic controls the RF relay to select the active transmitter, thereby decreasing switchover time. This is the preferred operating mode. Cold Standby Cold standby can be used in situations where lower power consumption is a priority. In this mode, the transfer logic will control the RADIATE function of each transmitter, turning the RF
2-11 Installation DataNex EMS Wireless, DATA-20 Digital Radiooutput ON (in tandem with the RF relay) as required for switching. This will increase switching time and a corresponding increase in data loss during the switchover. 2.9.2 Hot Standby Control using the TP64 2.9.2.1 TP64 Front Panel Controls and Indicators Note: See the following section for a detailed description of the Master/Slave logic implemented in the TP64. DataNex Figure 2-5. TP64 Front Panel LED Indicators Green: The indicated module is active, and that the module is performing within its specified limits. Yellow: The indicated module is in standby mode, ready and able for back-up transfer. Red: There is a fault with the corresponding module. It is not ready for backup, and the TP64 will not transfer to that module. TRANSFER Switches The RADIO A and RADIO B transfer switches cause the selected radio to become active, and the Master. See Section 3.4 (following) for further details. 2.9.2.2 Master/Slave Operation & LED Status The TP64 operates in a Master/Slave logic mode. In the power up condition, the Master is RADIO A. This means that RADIO A is the default active unit. The following logic applies to hot or cold standby, external or internal duplexer configurations.
Installation 2-12 DataNex EMS Wireless, DATA-20 Digital Radio Table 2-3. TP64 Transmitter Master/Slave Logic Selected Master TXA Status TXB Status TXA LED TXB LED Active TX TX Relay Position A OK OK GRN YEL A A A OK FAIL GRN RED A A A FAIL OK RED GRN B B A-Master Logic A FAIL FAIL RED RED N/A A B OK OK YEL GRN B B B OK FAIL GRN RED A A B FAIL OK RED GRN B B B-Master Logic B FAIL FAIL RED RED N/A B Table 2-4. TP64 Receiver Master/Slave Logic Selected Master RXA Status RXB Status RXA LED RXB LED Active RX RX Data & Clk A OK OK GRN YEL A A A OK FAIL GRN RED A A A FAIL OK RED GRN B B A-Master Logic A FAIL FAIL RED RED N/A None B OK OK YEL GRN B B B OK FAIL GRN RED A A B FAIL OK RED GRN B B B-Master Logic B FAIL FAIL RED RED N/A None A-Master Logic (default power-up): If RADIO A is “good”, the TP64 will remain in RADIO A position, regardless of RADIO B’s status. If RADIO A fails, the TP64 will switch to RADIO B (assuming that RADIO B is “good”) If RADIO A then returns to a “good” condition, the TP64 will switch back to RADIO A (the default Master) Manual Switchover to B-Master Logic The front panel switch on the TP64 can be used to manually force the system to a new Master. By pressing the RADIO B button, RADIO B now becomes the Master, and the TP64 will switchover to RADIO B (assuming that RADIO B is “good”). The default A-Master Logic will then switch to B-Master Logic, as outlined in Tables 2-3 and 2-4.
2-13 Installation DataNex EMS Wireless, DATA-20 Digital RadioNote: Manual switching of the Master is often used to force the system over to the standby unit. The user may want to put more “time” on the standby unit after an extended period of service. In Hot Standby configurations, this will not buy the user anything in terms of reliability. In Cold Standby, the “burn time“ is more significant, since the RF power amplifier device operating life becomes a factor. 2.9.2.3 DATA-20 Software Settings The full array of available settings for the Control and Configuration menus are located in Section 3—Operation of the Front Panel. Shown here are the applicable settings for redundant standby systems. Clock Settings For proper operation, the clock settings (located in the QAM Radio/Config/Modem Menu) must be set as follows: QAM InterfaceIntfc TRUNKTx In ClockClk Phase INVERTEDRx Clock OutClk Phase NORMALTrunk OutClk SourceClk PhaseEXTERNALNORMAL Control Settings These settings configure the transmitter for hot (or cold) standby. It is important that each DATA-20 radio in the redundant pair is configured identically for proper operation. In the SYSTEM TRANSFER menu: TransferTx Transfer ______Rx Transfer ______
Installation 2-14 DataNex EMS Wireless, DATA-20 Digital Radio Tx Transfer: OFF: Turns Transmitter Transfer Mode OFF. Rx Transfer: OFF: Indicates the receivers are not switched. In the QAM Radio TX Control menu: QAM Radio Tx ControlTX Radiate ______ Tx Radiate: ON: Configures the Transmitter to always RADIATE. 2.9.2.4 TP64 Settings The TP64 software settings are contained in the internal firmware. Aside from the front panel RADIO A/B Master Select (as described above), there are no user-configurable settings in the TP64 unit. 2.9.3 Hot Standby Control with Single Unit 2.9.3.1 DATA-20 Software Settings The full array of available settings for the Control and Configuration menus are located in Section 3—Operations. Shown here are the applicable settings for single systems. Clock Settings All controls and indications can be found on the DATA-20 front panel LCD display (located in the QAM Radio/Config/ModA or ModB Menu). QAM InterfaceIntfc RADIO(BKPLN)Tx In ClockClk Phase NORMAL Control Settings These settings configure the transmitter for hot (or cold) standby.
2-15 Installation DataNex EMS Wireless, DATA-20 Digital RadioIt is important that each DATA-20 radio in the redundant pair is configured identically for proper operation. In the SYSTEM TRANSFER menu: TransferTx Transfer ______Rx Transfer ______ Tx Transfer: HOT: Configures the Transmitter for HOT STANDBY operation.*(preferred) COLD: Configures the Transmitter for COLD STANDBY operation. Rx Transfer: ON: Places the receivers in both active and transfer mode. In the QAM Radio TX Control menu: QAM Radio Tx ControlTX Radiate ______ Tx Radiate: AUTO: Software controls the RADIATE function. 2.10 Site Installation The installation of the DATA-20 involves several considerations. A proper installation is usually preceded by a pre-installation site survey of the facilities. The purpose of this survey is to familiarize the customer with the basic requirements needed for the installation to go smoothly. The following are some considerations to be addressed (refer to Figure 2-8 for Site Installation Details). Before taking the product to the installation site verify that the interface connections are compatible with the equipment to be connected. Also, locate the information provided by the path analysis that should have been performed before ordering the equipment. At the installation site, particular care should be taken in locating the product in an area where it is protected from the weather and as close to the antenna as possible. Locate the power source and verify that it is suitable for proper installation. The installations should only be performed by qualified technical personnel only.
Installation 2-16 DataNex EMS Wireless, DATA-20 Digital Radio 2.11 Antenna/Feed System 2.11.1 Antenna Installation For compliance with FCC RF Exposure requirements the following has to be adhered to:- 1. All antenna installation and servicing is to be performed by qualified technical personnel only. When servicing the antenna, or working at distances closer than those noted below, ensure the transmitter has be disabled. 2. Typically, the antenna connected to the transmitter is a directional (high gain) antenna, fixed-mounted on the side or top of a building, or on a tower. Depending upon the application and the gain of the antenna, the total composite power could exceed 20 to 61watts EIRP. The antenna location should be such that only qualified technical personnel can access it, and that under normal operating conditions the antenna separation from the user is required to be located at the distance of 3.5meters or more. EIRP at the antenna is calculated as follows:- Transmit power – Cable loss + Antenna Gain = EIRP Eg. +31.1dBm – 6dB(for 100m LDF5-50A) +36dBi = 61.1Bmi
3 Front Panel Operation 3.1 Introduction This section describes the front panel operation of the DATA-20 digital radio/modem. This includes: • LCD display (including all screen menus) • Cursor and screen control buttons • LED status indicators 3.2 Front Panel Operation A picture of the DATA-20 front panel is depicted in Figure 3-1 below.
Front Panel Operation 3-2 DataNex EMS Wireless, DATA-20 Digital Radio Figure 3-1.DATA-20 Front Panel 3.2.1 LCD Display The Liquid Crystal Display (LCD) on the DATA-20 front panel is the primary user interface and provides status, control, configuration, and calibration functionality. The menu navigation and various screens are explained in detail later in this section. Backlight: An automatic backlight is built-in to the LCD for better clarity under low-light conditions. This backlight is enabled on power-up and will automatically turn off if there is no button activity by the user. The backlight will automatically turn on as soon as any button is pressed. Contrast Adjustment: Internal adjustment on board (in back of front panel button PCB). 3.2.2 Cursor and Screen Control Buttons The buttons on theDATA-20 front panel are used for LCD screen interface and control functions: ENT <ENTER> Used to accept an entry (such as a value, a condition, or a menu choice). ESC <ESC> Used to “back up” a level in the menu structure without saving any current changes. <UP>,<DOWN> Used in most cases to move between the menu items. If there is another menu in the sequence when the bottom of a menu is reached, the display will automatically scroll to that menu. <LEFT>,<RIGHT> Used to select between conditions (such as ON/OFF, ENABLED/DISABLED, LOW/HIGH, etc.) as well as to increase or decrease numerical values.
3-3 Front Panel Operation DataNex EMS Wireless, DATA-20 Digital Radio3.2.3 LED Status Indicators Table 3-1. LED Status Indicator Functions LED Name Function RX Receiver Green indicates that the receiver is enabled, the synthesizer is phase-locked, and a signal is being received. RXD Receive Data Green indicates that valid data is being received. BER Bit Error Rate Flashes red for each data error detected. FLT Fault General fault light (red). Consult the STATUS menus for out of tolerance conditions. LBK Loopback Red indicates analog or digital loopback is enabled. TXD Transmit Data Green indicates the modem clock is phase-locked and data is being sent. TX Transmitter Green indicates the transmitter is radiating, and the RF output (forward power) is above the factory-set threshold. 3.2.4 Screen Menu Tree Structure Figures 3-2a, b and c, located on pages 3-7, 3-8, 3-9 and 3-10, show the tree structure of the screen menu system. The figures group the screens into functional sets. There may be minor differences in the purchased unit, due to software enhancements and revisions. The current software revision may be noted in the SYSTEM sub-menu (under INFO). In general, <ENTER> will take you to the next screen from a menu choice, <UP> or <DOWN> will scroll through screens within a menu choice, and <ESC> will take you back up one menu level. Certain configuration screens have exceptions to this rule, and are noted later in this section. CAUTION DO NOT change any settings in the CONFIGURE or CALIBRATE screens. The security lock-out features of the software may not be fully implemented, and changing a setting will most likely render the system non-operational!
Front Panel Operation 3-4 DataNex EMS Wireless, DATA-20 Digital Radio 3.3 Main Menu METERQAM RADIOData-20 MAIN MENUSYSTEMALARMS/FAULTSScroll The main menu appears on system boot-up, and is the starting point for all screen navigation. Unlike most other screens in the software, the main menu scrolls up or down, one line item at a time.
3-5 Front Panel Operation DataNex EMS Wireless, DATA-20 Digital Radio3.3.1 Launch Screens The LAUNCH screen allows the user to quickly get to a particular screen within a functional grouping in the unit. The logic is slightly different than other screens. Figure 3-2 below contains a “Launch Screen Navigation Guide” to assist the user in locating the desired Radio screen. METERQAM RADIOData-20 MAIN MENUSYSTEMALARMS/FAULTSScrollCONFIGUREQAM Radio LaunchMODEMSTATUSQAM Radio LaunchTXSTATUSQAM Radio LaunchRXENTENTFreqAQAM Radio TX StatusMHzMore Screens(see Menu FlowDiagram)CONTROLQAM Radio LaunchMODEMSTATUSQAM Radio LaunchMODEMSTATUSQAM Radio LaunchMODEMCycle through STATUS, CONTROL,CONFIGURE choices:Cycle through MODEM,TX, RX choices:TX STATUS chosen,press ENTER to view.Page down/up withdown or up arrow.ESC Press ESCAPE to return toprevious levels.Move cursor tonext line Figure 3-2. Launch Screen Navigation Guide
Front Panel Operation 3-6 DataNex EMS Wireless, DATA-20 Digital Radio This page is intentionally blank.
3-7 Front Panel Operation DataNex EMS Wireless, DATA-20 Digital Radio Power SupplyPrimary+5VD+15VDAC5.00 V15.00 VAUDIO DECCARD IDChnl CdMUXMUX0CHC1Basic Card SetupQAM ModemRF TxQMATXACARD IDFactory CalibrateRADIO RXQAM ModemRADIO TXSystemCARD IDAUDIO ENCRF RXRXAENC1DEC1AUDIO DEC(see FactoryCalibrationsubmenu)System InformationSECURITYFIRMWARE USERVx.xxMETERMeterBargraph DECDR 1Backlight AUTOLed DSP ASystem DateMonthYearDay290006System TimeMinutesSecondsHour 154835ALARMS/FAULTAlarm(s)Total Alarms SinceReset-1ALARMS - AFAULTS - AALARMS - BFAULTS - BFault(s)Alarm(s)Rev Pwr > 0.25 W15:20:24 6/29/00Total Faults Since Reset-1Figure 3-2aLCD SCREEN MENUTREEFigure 3-2aLCD SCREEN MENUTREEMETERQAM RADIOData-20 MAINMENUSYSTEMALARMS/FAULTSScrollFault(s)Fwd Pwr < 0.5 W15:18:43 6/29/00SYSTEMCARD VIEWPOWER SUPPLYINFOSystemFACTORY CALScrollBASIC CARD SETUPUNIT-WIDE PARAMSMeter, System,Al /F l TransferTx Transfer OFFRx Transfer OFFExt A/D Readings#1- 0.56 #2- 0.00#3- 0.00 #4- 0.00Ext A/D Readings#1 #2 #3 #4OFF OFF OFF OFFExt RelaysRELAY CONTROLSMAP FAULTS-RELAYSExt D/AOutput RX SIG LVLControl Relays#1- OFF #2- ON#3- OFF #4- ONFaultsMap to Relays? ONParameter ValueUnit No. 1Main Title NXE1Redundant ONIP MSB 207IP 71IP 217IP LSB 191SNMP MSB 255SNMP 255SNMP 255SNMP LSB 0GW MSB 207GW71GW217GW LSB 191DATE/TIMETRANSFEREXTERNAL I/O**Note: "A" module and "Primary" screensare the default."B" module and "Secondary"calibrations are available only whenredundant systems are configured.Cards Active B.AddrDECDR 1 1Cards Active B.AddrQAMOD A1RF TX A1RF RX A1Cards Active B.AddrMUX 0 0CH CD 1 0ENCDR 1 1CALC BER ALWAYSRMT/LOC LOC
3-8 Front Panel Operation DataNex EMS Wireless, DATA-20 Digital Radio Factory CalibrationRADIO TX-A CALAFC LVLLO LVLQAM MODEM-B CALRADIO TX CALUNIT AUNIT BQAM MODEM CALUNIT AUNIT BFWD PWR-A CalibrCal Value190 27-9999.00Pwr AdjustReading 1.0010.00 A1.72 ARADIO TX-A CALFWD PWRREV PWR PA CURALCRADIO TX-B CALFWD PWRREV PWR PA CURALCRADIO TX-B CALAFC LVLLO LVLPA Current-A CalibCal ValueReading ALC-A CalibrPA ALC AUTOREV PWR-A CalibrCal Value0.25 WReadingXCTR LVL-A CalibrCal Value 100 %100 %ReadingLO LVL-A CalibrCal Value 100 %52.94 %ReadingAFC LVL-A CalibrCalibr Val 4.500.85ReadingSYSTEM CAL15V-RFA+15VA+5VDBATTOCXOAFC LVLMOD LVLSYNTH LVLOCXO-A CalMode194SLAVEFreq AdjSynth Lvl-A CalCal Value100.096.00ReadingMod Lvl-A CalCal Value100.0095.96ReadingAFC Lvl-A CALCal Value4.503.67ReadingOCXO-B CalMode194SLAVEFreq AdjSynth Lvl-B CalCal Value100.096.00ReadingMod Lvl-B CalCal Value100.0095.96ReadingAFC Lvl-B CALCal Value4.503.67ReadingQAM MODEM-A CALFigure 4-2cSL9003Q SCREEN MENU TREEFigure 4-2cSL9003Q SCREEN MENU TREEOCXOAFC LVLMOD LVLSYNTH LVLNote: "B" Module and "Secondary" calibrations are available only whenredundant systems are configured."A" module and "Primary" screens are the default.METERQAM RADIOData-20 MAIN MENUSYSTEMALARMS/FAULTSScrollFactory CalibrateRADIO TXRADIO RXQAM MODEMSYSTEMRADIO RX-A CALRSLAFC LVLLO LVLLO LVL-A CALCalibr Val100Reading4.05AFC LVL-A CALCalibr Val4.50Reading4.05RSL-A CALRADIO RX CALUNIT AUNIT BRADIO RX-B CALRSLAFC LVLLO LVLCalibr Val-50.00Hi Reading0.00LO LVL-B CALCalibr Val100Reading4.05AFC LVL-B CALCalibr Val4.50Reading4.05XCTR LVL-9999.002.400.00FWD PWR-B CalibrCal Value190 27-9999.00Pwr AdjustReading 1.0010.00 A1.72 APA Current-B CalibCal ValueReading ALC-B CalibrPA ALC AUTOREV PWR-B CalibrCal Value0.25 WReadingXCTR LVL-B CalibrCal Value 100 %100 %ReadingLO LVL-B CalibrCal Value 100 %52.94 %ReadingAFC LVL-B CalibrCalibr Val 4.500.85Reading-9999.002.400.00XCTR LVLcwOFF cwOFF -70.00Lo ReadingRSL-B CALCalibr Val-50.00Hi Reading0.00-70.00Lo ReadingSystem CalEXTERNAL ANALOG#1 #2 #3 #415V-RFA-Prim. CalibReading 15.00Calibr Val 14.50Battery-Prim. CalibReading 15.00Calibr Val 14.50 +5VD CalibReading 15.00Calibr Val-9999.00 +15VA CalibReading 15.00Calibr Val 14.50Extern A/D 1 CalibReading 15.00Calibr Val 12.00Extern A/D 2 CalibReading 15.00Calibr Val 12.00Extern A/D 3 CalibReading 15.00Calibr Val 12.00Extern A/D 4 CalibReading 15.00Calibr Val 12.00CARD VIEWPOWER SUPPLYINFOSystemFACTORY CALScrollBASIC CARD SETUPDATE/TIMETRANSFEREXTERNAL I/OFigure 3-2d LCD SCREEN MENU TREE
3-9 Front Panel Operation DataNex EMS Wireless, DATA-20 Digital Radio 3.4 Screen Menu Summaries The following tables and text provide a screen view for that topic as well as the functions and settings of that screen. The order follows the Screen Menu Tree (Figures 3-2a and 4-2d) with the exception of the QAM Radio screens, which are grouped in the STATUS, CONTROL and CONFIGURE categories. 3.4.1 Meter MeterDECDR 1 BargraphLed Dsp A Function Settings Summary Bargraph ENCDR1, 2, etc… DECDR1, 2, etc… NONE Selects the desired audio source for display on the audio level bargraph Turns off the bargraph Led Dsp A B The status of Radio A or Radio B is displayed on the LEDs on the front panel. 3.4.2 System: Card View Cards Active B.Addr QAMOD A RF TX A11 RF RX A 1Cards Active B.Addr MUX 0 CH CD 100 ENCDR 1 1Cards Active B.Addr DECDR 1 1
Front Panel Operation 3-10 DataNex EMS Wireless, DATA-20 Digital Radio Function Settings Summary Cards Active RF RX A DECDR 1 ENCDR 1 QAMOD A RF TX A MUX 0 CH CD 1 QAM Receiver RF Module installed in QAM Radio “A” slots (base address 0) Audio Decoder #1 installed (base address 1) Audio Encoder #1 installed (base address 2) QAM Modem Module installed in QAM Radio “A” slots (base address 3) QAM Transmitter RF Module installed in QAM “A” slots (base address 4) Intelligent Multiplexer #0 installed (base address 5) Note: The card view screen gives the user a list of all installed cards in the unit. The base address (B. Addr) is listed for diagnostic purposes only. 3.4.3 System: Power Supply Power Supply StatusPrimary+5VD+15VDAC5.00 V15.00 V Function Settings Summary Primary AC DC Indicates type of supply in primary slot A: Universal AC input DC Option +5 VD 0-9.99 V 5.20 V nominal Voltage level of the main +5 volt supply +15 VD 0-99.9 V 15.2 V nominal Voltage level of the main +15 volt supply 3.4.4 System: Info System InformationSecurityFirmware USERV.2.04Unit No. 1 Function Settings Summary Unit No. 1,2,3,… Identification for NMS system SECURITY Lockout User (default) Factory Indicates access level of security: No control available Limited control of parameters Full configure and calibration FIRMWARE V x.xx Revision of front panel screen menu software
3-11 Front Panel Operation DataNex EMS Wireless, DATA-20 Digital Radio 3.4.5 System: Basic Card Setup Basic Card SetupQAM ModemRF TxQMATXACard IdCardAudio EncRF Rx RXAENC1DEC1Audio DecIdCardChnl CdMUX MUX0CHC1Id Function Settings Summary QAM Modem QMA, QMB QAM Modem installed in QAM Radio slots A or B RF Tx TXA, TXB QAM Transmitter installed in QAM Radio slots A or B RF Rx RXA, RXB QAM Receiver installed in QAM Radio slots A or B Audio Enc ENC1,2,… Audio Encoder installed and identified (affects meter selection of bargraph) Audio Dec DEC1,2,… Audio Decoder installed and identified (affects meter selection of bargraph) MUX MUX 0,1,… Mux Module installed and identified Chnl Cd CHC 1,2,… Channel Card installed and identified Note: These are factory settings of installed cards, used to control appropriate displays in the CARD VIEW screens. Note: Pressing enter at each ID type brings up another screen with the Card Function shown and the question: In System? Is displayed. Depending upon the card type, this screen also indicates the base address. These windows are shown below:
Front Panel Operation 3-12 DataNex EMS Wireless, DATA-20 Digital Radio QAM Modem AIn system? YESRadio TX AIn system? YESRadio RX AIn system? YESEncoder 1In system? YESBase addr 1Decoder 1In system? YESBase addr 1Mux 0In system? YESChnl Base Addr 0Hooked to Radio NOMux 0Channel Types1 NONE 3 NONE2 NONE 4 NONEChannel Card 1In system? YESBase addr 0Channel Card 1Channel Types1 NONE 3 NONE2 NONE 4 NONE 3.4.6 System: Factory Calibration Factory CalibrateRADIO RXQAM ModemRADIO TX System The Factory Calibration Screens are documented in Figure 3-2 (Screen Menu Tree). The user may refer to this diagram when instructed to do so by customer service technicians.
3-13 Front Panel Operation DataNex EMS Wireless, DATA-20 Digital Radio 3.4.7 System: Unit-Wide Parameters ParameterMain TitleUnit No. 1NXE1ValueRedundant ONIP MSB 207IP 71IP 237IP LSB 115SNM MSB 255SNM 255SNM 255SNM LSB 0GW MSB 207GW 71GW 237GW LSB 254Calc BER alwaysRMT/LOC LOC Function Settings Summary Unit No. 1,2,3,… Identification for NMS system Main Title TRANSMITTER, RECEIVER, TRANSCEIVER T1 DTV Link NXE1 Determines main menu display and affects screen menu selection of modules Redundant ON OFF Hot Standby Dual Radio operation. Single Radio operation. IP Integer (0-255) Internet Protocol (IP) address of the device. These values must be set for the device to possess network capabilities. SNM Integer Subnet Mask of the device. Only needs to be set if the device is to use its network capabilities. Subnetting allows network administrators additional flexibility in defining relationships among network hosts. GW Integer The default Gateway of the device. The Gateway address is configured by the network administrator. This address informs each device where to send data if the target station does not reside on the same subnet as the source. Calc BER always RMT LOC (Remote) Use RMT only in SNMP mode. (Local) Put in local.
Front Panel Operation 3-14 DataNex EMS Wireless, DATA-20 Digital Radio 3.4.8 System: Date/Time System DateMonthYearDay 299806System TimeMinuteSecondHour 154835 Function Settings Summary Day Month Year 01-31 01-12 00-99 Sets the system date used for NMS and Fault/Alarm logging After selection, press ENTER to save Hour Minute Second 00-23 00-59 00-59 Sets the system time used for NMS and Fault/Alarm logging After selection, press ENTER to save 3.4.9 System: Transfer TransferTx Transfer OFFRx Transfer OFF Function Settings Summary TX Transfer OFF HOT COLD Configures the internal logic for transfer panel (TP64) TX control RX Transfer OFF ON Configures the internal logic for transfer panel (TP64) RX control
3-15 Front Panel Operation DataNex EMS Wireless, DATA-20 Digital Radio 3.4.10 External I/O Ext A/D Readings#1- 0.56#3- 0.00#2- 0.00#4- 0.00Ext Status Readings#1 #3#2 #4OFF OFF OFF OFFExt RelaysRELAY CONTROLSMAP FAULTS-RELAYSControl Relays#1- OFF#3- OFF#2- ON#4- ONFaultsMap to Relays? ONExt D/AOutput RX SIG LVL Function Settings Summary Ext A/D Readings #1, #2, #3, #4 Voltage readings via the NMS I/O card Ext Status Readings #1, #2, #3, #4 Logic Level readings via the NMS I/O card Ext Relays #1, #2, #3, #4 Control of relays at the NMS I/O card Map Faults-Relays ON OFF Maps pre-determined fault conditions to trigger relays at the NMS I/O card Ext D/A Output RX SIG LVL NOTHING TX FWD PWR External output follows Receive Signal Level. External output follows nothing. External output follows Transmit Forward Power.
Front Panel Operation 3-16 DataNex EMS Wireless, DATA-20 Digital Radio 3.4.11 Alarms Alarm(s)Total Alarms Since Reset-1Alarm(s)Rev Pwr > 0.25 W15:20:24 6/29/98 Module Parameter Nominal Trip Value QAM RF TX Reverse Power 0.05 Watt > 0.25 Watt PA Current 2.5 Amp > 3.0 Amp LO Level 100% < 50% Exciter Level 100% < 50% QAM RF RX RSL -30 to –90 dBm LO Level 100% < 50% QAM MODEM BER - >1.00E-04 Synth Level 100% < 50% Modulator only Modem Level 100% < 50% Alarm definition: A specific parameter is out of tolerance, but is NOT crucial for proper system operation. ALARMS are cautionary only, and indicates a degradation in a system parameter. Logging: All fault and alarm events are logged with the date and time. Alarm screen reset: After viewing the screen, press ENTER to clear all logs entries. If the alarm has been corrected, no new logs will be generated.
3-17 Front Panel Operation DataNex EMS Wireless, DATA-20 Digital Radio 3.4.12 Faults Fault(s)Total Faults Since Reset-1Fault(s)Fwd Pwr < 0.5 W15:18:43 6/29/98 Module Parameter Nominal Trip Value QAM RF TX Forward Power 1.0 Watt < 0.5 Watt AFC Lock Lock Unlock PA Temp 40 deg C >80 deg C QAM RF RX AFC Lock Lock Unlock QAM MODEM AFC Lock Lock Unlock Mbaud Lock Unlock Dbaud Lock Unlock Dfec Lock Unlock Fault definition: A specific parameter is out of tolerance and is crucial for proper system operation. Logging: All fault and alarm events are logged with the date and time. Fault screen reset: After viewing the screen, press ENTER to clear all logs entries. If the fault has been corrected, no new logs will be generated. 3.4.13 G821 Parameters QAM ModemSLOSS 0.000E +00ES 0.000E +00SES 0.000E +00UNAS 0.000E +00 Function Settings Summary SLOSS 0.000E +00 Number of times the signal has been lost for more than 10 seconds ES 0.000E +00 Errored seconds SES 0.000E +00 Severely errored seconds UNAS 0.000E +00 Unavailable seconds
Front Panel Operation 3-18 DataNex EMS Wireless, DATA-20 Digital Radio 3.4.14 QAM Modem Status QAM ModemBER Post#Bits#Errors-80 dBm0.00E+000.0000E+000.0000E+00QAM ModemBER PreQAM Modem#Bits#Errors-80 dBm0.00E+000.0000E+000.0000E+00 Function Settings Summary BER Post 0.00E-00 Post-FEC (Forward Error Correction) Bit Error Rate since last “ENTER” reset BER Pre 0.00E-00 Pre-FEC (Forward Error Correction) Bit Error Rate since last “ENTER” reset # Bits 0.0000E+00 # of Bits counted since last “ENTER” reset # Errors 0.0000E+00 # of Errors counted since last “ENTER” reset Note: Received Signal Level
3-19 Front Panel Operation DataNex EMS Wireless, DATA-20 Digital Radio QAM Modem Status (continued) QmdmSynth LOCKAFC 3.7 VBaudQmdm DEMODFecLOCKLOCKBaudQmdm MODIFMODLOCK4 % Qmdm MODFltrIntrlSpctr%NRML183QmdmMode %IFOUT 9564QQmdm MODDRTEnckBaudk280.51535DVB Function Settings Summary BAUD LOCK (default) UNLOCK Indicates modulator PLL is locked to incoming data clock IFMOD 0 – 100% 100% NOM BAUD LOCK (default) UNLOCK Indicates demodulator PLL is locked to incoming data clock FEC LOCK (default) UNLOCK Indicates FEC decoder is synchronized SYNTH LOCK (default) UNLOCK Confirms 70 MHz IF synthesizer is phase locked AFC 0 – 9.9 VDC 3.7 VDC (nominal) 70 MHz IF synthesizer AFC voltage IFOUT 0 – 100% 100% (nominal) Modulator level Mode 16-64Q Modulation mode:16QAM, 32QAM, 64QAM BAUD 280.5 K Symbol rate DRT 1535 K Data rate ENC DVB Encoding mode SPCTR NRML Spectrum Normal or Invert FLTR 18 % Nyquist filter INTRL 3 Interleave Depth Continued on next page.
Front Panel Operation 3-20 DataNex EMS Wireless, DATA-20 Digital Radio QAM Modem Status (continued) Qmdm DEMODDRTEnckBaudk280.51535DVBQmdm DEMODFltrIntrlSpctr%NRML183QmdmTest NORMALQmdm IntfcIntfc TRNK TX CLOCKClk Src RecovClk Ph NormTX CLK OUTClk Ph NormRX OUTData Src NormClk Src RecovClk Ph NormQmdmFVers 1.5XVers 2.1 Function Settings Summary BAUD 280.5 K Symbol rate DRT0 1535 K Data rate ENC DVB Encoding mode SPCTR NRML Spectrum Normal or Invert FLTR 18 % Nyquist filter INTRL 3 Interleave Depth TEST NORMAL Internal Test Pattern Generator Interface Trunk Active Interface Clk Src (Tx Clock) Internal, EXT TXC, EXT RXC, Recovered Clock source of the Transmitter. Clk Ph (Tx Clock) Inverted, Normal Clock Phase of the Transmitter. Clk Ph (Tx Clock Out) Inverted, Normal Clock Phase of the Transmitter Clock Out. Data Src (Rx Out) Norm, RPT, Loop Data Source of the Receiver Out. Normal means the source is either BKPLN or TRNK; RPT sets the radio to Repeater; Loop sets the radio to loopback mode. Clk Src (Rx Out) Internal, EXT TXC, EXT RXC, Recov Clock Source of the Receiver Out. Clk Ph (Rx Out) Norm, Inverted Clock Phase of the Receiver Out. Fvers Xvers Internal is the internal clock of the NXE1; EXT TXC is the External Transmit Clock; EXT RXC is the External Receive Clock; Recovered is the recovered clock from the receiving RF.
3-21 Front Panel Operation DataNex EMS Wireless, DATA-20 Digital Radio 3.4.15 QAM Radio TX Status AFC VTx%LOXctr %1001003.8XmtrTXWFwdRev W0.001.00FORCPA CurTxCSynthATempLOCK452.50FreqQAM Radio TX StatusMHzAFC VTx%LOXctr %1001003.8XmtrTXFORCTxSynth LOCKFreqQAM Radio TX StatusMHzxxxx.xxxDTV Menusxxxx.xxx Function Settings Summary Freq A 2300.00MHz Displays the transmitter output carrier frequency XMTR TRAFFIC FORCED (default) Status of transmitter: ON in a hot standby mode Forced ON FWD 0 – 9.99 Watt 1.00 Watt (nominal) Output Power of TX. This menu item does not appear when the unit is configured for DTV. REV 0 – 9.99 Watt 0.07 Watt (nominal) Reverse (or reflected) power at antenna port. This menu item does not appear when the unit is configured for DTV. PA CUR 0.00– 9.99 Amp 2.40 Amp (nominal) Power amplifier current consumption. This menu item does not appear when the unit is configured for DTV. TEMP 0– 99.9 deg C 45.0 deg C (nominal) Power amplifier temperature. This menu item does not appear when the unit is configured for DTV. SYNTH LOCK (default) UNLOCK Indicates phase lock of the 1st LO AFC 0 – 9.9 VDC 3.8 VDC (nominal) 1st LO PLL AFC Voltage LO 0 – 99.9% 100% (nominal) 1st LO relative power level XCTR 0 – 99.9% 100% (nominal) Transmit module’s relative output power level
Front Panel Operation 3-22 DataNex EMS Wireless, DATA-20 Digital Radio 3.4.16 QAM Radio RX Status FreqQAM Radio RX StatusMHzxxxx.xxRcvrRXdBmRSLAttenFORC-80AUTORXVAFCLO %SYNTH LOCK4.4100.0 Function Settings Summary Freq A 2300.00 MHz Displays the receiver operating frequency XMTR TRAFFIC FORCED (default) Transfer status of receiver: Is operating, ready for transfer Is operating, will not transfer (forced ON) RSL -30.0 to -90.0 dBm Received signal level (signal strength) Nominal level dependent upon customer path/system gain ATTEN AUTO (default) ON OFF Receiver PIN attenuator setting: Controlled by internal software Forced ON Forced Off SYNTH LOCK (default) UNLOCK Indicates phase lock of the 1st LO AFC 0 – 9.9 VDC 3.5 VDC (nominal) 1st LO PLL AFC Voltage LO 0 – 99.9% 100% (nominal) 1st LO relative power level 3.4.17 QAM Radio TX Control TX RadiateQAM Radio TX ControlAUTO Function Settings Summary TX-A Radiate AUTO (default) ON OFF Transmitter radiating, but folds back output power on high antenna VSWR (REV PWR) Transmitter radiating Transmitter not radiating
3-23 Front Panel Operation DataNex EMS Wireless, DATA-20 Digital Radio 3.4.18 QAM Radio RX Control RX AttenQAM Radio RX ControlAUTO Function Settings Summary RX-A ATTEN AUTO (default) ON OFF ON, and is activated on high signal level ON always OFF
Front Panel Operation 3-24 DataNex EMS Wireless, DATA-20 Digital Radio 3.4.19 QAM Modem Configure Power-On DefaultQAM Modem ConfigureMode/Effic 32Q/5SpctrmFltr 18INVRTIntrlvData Rt 32048 kTestEncode PRBS23DVBLoopback CLR(OFF) Function Settings Summary Interface QPSK/2, 16Q/4, 32Q/5, 64Q/6, 128Q/7, 256Q/8 Default is 64QAM DATA RATE N x 64 kbps, Valid range depends upon configuration. INTERLEAVE 1 2 3 (default) 4 6 12 2,17 2,34 2,51 2,68 2,102 2,204 Interleave depth. 1 to 204 SPECTRUM INVERT (default) FILTER 18 15 (default) 12 Nyquist roll-off factor ENCODING DVB (default) Raw data format TEST NORMAL (default) PRBS15, PRBS23 Test pattern length Loopback CLR (Off) RMT+LOC RPTR Loopback mode
3-25 Front Panel Operation DataNex EMS Wireless, DATA-20 Digital Radio QAM Modem Configure (continued) QAM InterfaceIntfc DTE TrnkTX CLOCKClk Src RecovClk Ph NormTX Clk OutClk Ph NormRX OutData Src NormClk Src NormClk Ph NormQmdmFVERS 1.5XVER 2.1 Function Settings Summarys Interface Trunk Radio (bkpln) Uses Trunk for I/O. Uses Backplane for I/O. Clk Src (Tx Clock) Internal, EXT TXC, EXT RXC, Recovered Clock source of the Transmitter. Clk Ph (Tx Clock) Inverted, Normal Clock Phase of the Transmitter. Clk Ph (Tx Clock Out) Inverted, Normal Clock Phase of the Transmitter Clock Out. Data Src (Rx Out) Norm, RPT, Loop Data Source of the Receiver Out. Normal means the source is either BKPLN or TRNK; RPT sets the radio to Repeater; Loop sets the radio to loopback mode. Clk Src (Rx Out) Internal, EXT TXC, EXT RXC, Recov Clock Source of the Receiver Out. Clk Ph (Rx Out) Norm, Inverted Clock Phase of the Receiver Out. Fvers Xvers Internal is the internal clock of the DATA-20; EXT TXC is the External Transmit Clock; EXT RXC is the External Receive Clock; Recovered is the recovered clock from the receiving RF. NOTE: See the User Clock Options Conceptual Diagram in Figure 3-4 below for clarification.
Front Panel Operation 3-26 DataNex EMS Wireless, DATA-20 Digital Radio 3.4.19.1 Typical Configuration A typical installation of DATA-20 Digital Radios involves configuring each DATA-20 as either Data Communications Equipment (DCE) or as Data Terminal Equipment (DCE), as illustrated below: Telecom Equipment Configuredas DTERx ClockTx ClockConfiguredas DCEConfiguredas DTERepeater(DCE coupled with a DTE)Configuredas DCE A DCE coupled together with a DTE enables the signal to be relayed to another DCE. This configuration is called a Repeater. A network can consist of as many Repeaters as necessary. The following sub-sections describe how to configure the DATA-20 a DCE or as a DTE. 3.4.19.2 DATA-20 as Data Communications Equipment (DCE) By default, the DATA-20 is configured as Data Communications Equipment (DCE). In the mode, the device recovers the transmitted clocks and effectively performs as a modem.
3-27 Front Panel Operation DataNex EMS Wireless, DATA-20 Digital Radio Configuredas DCE To configure the DATA-20 as a DCE, select the following clock settings in the System menu: TX CLOCKClk Src RecovClk Ph NormTX CLK OUTClk Ph NormRX CLOCKClk Src RecovClk Ph NormQAM InerfaceIntfc DCE Trunk 3.4.19.3 DATA-20 as Data Terminal Equipment (DTE) When configured as Data Terminal Equipment (DTE), the DATA-20 gets its clock from an external source, such as a telecommunications device. Telecom Equipment Configuredas DTERx ClockTx Clock
Front Panel Operation 3-28 DataNex EMS Wireless, DATA-20 Digital Radio To configure the DATA-20 as a DTE, make the following clock selections in the System menu: TX CLOCKClk Src EXT TXCClk Ph NormTX CLK OUTClk Ph NormRX CLOCKClk Src EXT TXCClk Ph Norm QAM InterfaceIntfc DTE Trunk
3-29 Front Panel Operation DataNex EMS Wireless, DATA-20 Digital Radio 3.4.19.4 User Clock Options Conceptual Diagram Figure 3-4. User Clock Options Conceptual Diagram
Front Panel Operation 3-30 DataNex EMS Wireless, DATA-20 Digital Radio 3.4.20 QAM Radio TX Configure FreqQAM Radio TX ConfigMHzxxxx.xxLO SideQAM Radio TX ConfigLOWLO Freq MHz1020.0000LO Step KHz25.0press'ENTER'press'ESC'Save Setting ? Nopress "Leftarrow" to sayYESpress'ENTER' Function Settings Summary FREQ 2300.00 MHz Displays the frequency of the transmitter and allows the user to make frequency changes. LO Side LOW HIGH LOW: LO freq is less than carrier freq. High: LO freq is greater than carrier freq. LO Freq 2370 MHz LO Step 25.0 KHz Programming frequency step size
3-31 Front Panel Operation DataNex EMS Wireless, DATA-20 Digital Radio 3.4.21 QAM Radio RX Configure FreqQAM Radio RX ConfigMHzxxxx.xxLO SideQAM Radio RX ConfigLOWLO Freq MHz1020.0000LO Step KHz25.0press'ENTER'press'ESC'Save Setting ? Nopress "Leftarrow" to sayYESpress'ENTER' Function Settings Summary FREQ 2300.00MHz Displays the frequency of the receiver and allows the user to make frequency changes. LO Side LOW HIGH LOW: LO freq is less than carrier freq. High: LO freq is greater than carrier freq. LO Freq 2370.00 MHz LO Step 25.0 KHz Programming frequency step size 3.5 NMS/CPU PC Configuration Software The NMS/CPU card is configured with a Windows-based PC software package. The hardware is accessed through the serial port on the NMS card back panel. See the manual for EMS Wireless DATA-20 Configuration Software for more information. 3.6 Up/Down Converter: Frequency Adjust 3.6.1 TX Frequency Adjust It is possible to change the carrier frequency of the transmitter via the front panel. Before changing frequency ensure that this is carried out in a controlled environment with test equipment to ensure that you are transmitting the defined frequency:
Front Panel Operation 3-32 DataNex EMS Wireless, DATA-20 Digital Radio 1. Power-up the unit and navigate the LCD screens as follows: CONFIGUREQAM Radio LaunchTXAFreqQAM Radio TX ConfigMHzxxxx.xx 1. Using the cursors, change to the desired frequency. Press ENTER and the TX will most likely lose AFC LOCK. 2. Navigate the LCD screens to monitor the AFC voltage as follows STATUSQAM Radio LaunchTXAAFC VDCTX%LOXctr %50504.5 1. Ensure that the voltage reads 0.5 to 9.5 +/- .25 VDC. 2. The TX should achieve AFC LOCK and the operation is successful. 3.6.2 AFC Level—RX It is possible to change the operating frequency of the receiver via the front panel. Before changing frequency ensure that this is carried out in a controlled environment with test equipment to ensure that you are transmitting the defined frequency: 1. Power-up the unit and navigate the LCD screens as follows: CONFIGUREQAM Radio LaunchRXAFreqQAM RADIO RX ConfigMHzxxxx.xx
3-33 Front Panel Operation DataNex EMS Wireless, DATA-20 Digital Radio 1. Using the cursors, change to the desired frequency. Press ENTER and the RX will most likely lose AFC LOCK. 2. Navigate the LCD screens to monitor the AFC voltage as follows STATUSQAM Radio LaunchRXARXVDCAFCLO %SYNTH LOCK4.5100 3. Ensure that the voltage reads 0.5 to 9.5 +/- .25 VDC. 4. The RX should achieve AFC LOCK and the operation is successful.
4 Data Interface Cables 67131445TSPWURTXD_I_ATXD_I_BRXD_O_ARXD_O_BTXC_I_ATXC_I_BSEND DATA (A)SEND DATA (B)RECEIVE DATA (A)TERMINAL TIMING (B)TERMINAL TIMING (A)RECEIVE DATA (B)RXC_O_BRXC_O_ATXC_O_BTXC_O_A1011123RECEIVE TIMING (A)RECEIVE TIMING (B)SIGNAL GROUNDSEND TIMING (B)SEND TIMING (A)VBXYAACHASSIS GROUNDAMUX CHANNELHD15MV.35 FEMALETWISTEDPAIRINDICATES(DCE)CONN SHELL GNDSIG_GNDDATA SET READYDATA TERMINAL READYEFHCDRECEIVE LINE SIGNAL DETECTORCLEAR TO SENDREQUEST TO SENDSHIELD Figure 4-1. Mux Channel – V.35 (DCE)
Appendix 4-2 DataNex EMS Wireless, DATA-20 Digital Radio Figure 4-2. Trunk to Trunk Cable (Mux-Trunk Null)
5 Appendix 5.1 Abbreviations & Acronyms A/D, ADC Analog-to-Digital, Analog-to-Digital Converter ADPCM Adaptive Differential Pulse Code Modulation AES/EBU Audio Engineering Society/European Broadcast Union AGC Auto Gain Control ATM Automatic Teller Machine BER Bit Error Rate CMRR Common Mode Rejection Ratio Codec Coder-Decoder CPFSK Continuous-Phase Frequency Shift Keying CSU Channel Service Unit D/A, DAC Digital-to-Analog, Digital-to-Analog Converter DB Decibel DBc Decibel relative to carrier DBm Decibel relative to 1 mW DBu Decibel relative to .775 Vrms DCE Data Circuit-Terminating Equipment DSP Digital Signal Processing DSTL Digital Studio-Transmitter Link DTE Data Terminal Equipment DVM Digital Voltmeter EIRP Effective Isotropic Radiated Power EMI Electromagnetic Interference ESD Electrostatic Discharge/Electrostatic Damage FEC Forward Error Correction FET Field effect transistor FMO Frequency Modulation Oscillator FPGA Field Programmable Gate Array
Appendix 5-2 DataNex EMS Wireless, DATA-20 Digital Radio FSK Frequency Shift Keying FT1 Fractional T1 IC Integrated circuit IEC International Electrotechnical Commission IF Intermediate frequency IMD Intermodulation Distortion ISDN Integrated-Services Digital Network Kbps Kilobits per second KHz Kilohertz LED Light-emitting diode LO, LO1 Local oscillator, first local oscillator LSB Least significant bit Mbps Megabits per second Modem Modulator-demodulator Ms Millisecond MSB Most significant bit MUX Multiplex, Multiplexer µs Microsecond µV Microvolts NC Normally closed NMS Network Management System NO Normally open PCB Printed circuit board PCM Pulse Code Modulation PGM Program PLL Phase-Locked Loop QAM Quadrature Amplitude Modulation R Transmission Rate RF Radio Frequency RPTR Repeater RSL Received Signal Level (in dBm) RSSI Received Signal Strength Indicator/Indication RX Receiver SCA Subsidiary Communications Authorization SCADA Security Control and Data Acquisition SNR Signal-to-Noise Ratio
5-3 Appendix DataNex EMS Wireless, DATA-20 Digital Radio SRD Step Recovery Diode STL Studio-Transmitter Link TDM Time Division Multiplexing THD Total harmonic distortion TP Test Point TTL Transistor-transistor logic TX Transmitter Vrms Volts root-mean-square Vp Volts peak Vp-p Volts peak-to-peak VRMS Volts, root-mean-square VSWR Voltage standing-wave ratio ZIN Input Impedance ZOUT Output Impedance 5.2 Conversion Chart microvolts to dBm (impedance = 50 ohms) microvolts dBm microvolts dBm 0.10 -127.0 180 -61.9 0.25 -119.0 200 -61.0 0.50 -113.0 250 -59.0 0.70 -110.1 300 -57.4 1.0 -107.0 350 -56.1 1.4 -104.1 400 -54.9 2.0 -101.0 450 -53.9 2.5 -99.0 500 -53.0 3.0 -97.4 600 -51.4 3.5 -96.1 700 -50.1 4.0 -94.9 800 -48.9 4.5 -93.9 900 -47.9 5.0 -93.0 1,000 -47.0 6.0 -91.4 1,200 -45.4 7.0 -90.1 1,400 -44.1 8.0 -88.9 1,600 -42.9
Appendix 5-4 DataNex EMS Wireless, DATA-20 Digital Radio microvolts dBm microvolts dBm 9.0 -87.9 1,800 -41.9 10 -87.0 2,000 -41.0 11 -86.2 2,500 -39.0 12 -85.4 3,000 -37.4 14 -84.1 3,500 -36.1 16 -82.9 4,000 -34.9 18 -81.9 4,500 -33.9 20 -81.0 5,000 -33.0 25 -79.0 6,000 -31.4 30 -77.4 7,000 -30.1 35 -76.1 8,000 -28.9 40 -74.9 9,000 -27.9 45 -73.9 10,000 -27.0 50 -73.0 22.36 mV -20 (10 mW) 60 -71.4 70.7 mV -10(100 mW) 70 -70.1 223.6 mV 0 (1 mW) 80 -68.9 707.1 mV +10 (10mW) 90 -67.9 2.23 V +20(100 mW) 100 -67.0 7.07 V +30 (1 W) 120 -65.4 15.83 V +37 (5 W) 140 -64.1 22.36 V +40 (10 W) 160 -62.9
5-5 Appendix DataNex EMS Wireless, DATA-20 Digital Radio
Appendix 5-6 DataNex EMS Wireless, DATA-20 Digital Radio

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