EMS Technologies 0A1MINI19 1900 MHz PCS Repeater User Manual Manual

EMS Technologies Inc 1900 MHz PCS Repeater Manual

Users Manual

Preliminary DocumentCI Wireless Inc. 11/19/99 1Eko-Mini ManualDescriptionThe Eko-Mini is a band selective, bi-directional amplifier unit and was designed to provideenhanced RF coverage for wireless systems in small facilities. Usage includes providingcoverage in retail stores, offices, warehouses, restaurants, homes, etc.The Mini is housed in an indoors mountable enclosure, and is powered with a regulated wallmountable power supply.The Mini supports most system protocols including CDMA, GSM/PCS1900 and TDMA andis available in models that cover all licensed 1.9 GHz PCS bands A through F, ESMR/SMR806-866 MHz and Cellular 821 to 894 MHz. Band selective filtering in both uplink anddownlink signal paths is accomplished with down conversion to an intermediate frequencyand SAW filtering to provide maximum selectivity from out of band carriers.The Mini features Auto set-up, lightweight compact enclosure, optional remote alarming,excellent electrical specifications, high reliability and cost effective pricing.FunctionalityThe Mini is capable of automatically adjusting its own signal gain levels up to the maximumoutput power levels. The Mini detects the downlink output power and adjusts the level for 20-dBm composite output power and continues to monitor and reset the gain as required forproper system performance. For example, when CDMA protocol system is being amplified,there could be an error in set up initially resulting from only pilot sync, and paging Walshcodes being present on the RF carrier. The Mini will reduce the system gain until no signal isreceived that will exceed the output power setting. This prevents the Mini from setting up to ahigher in power level than actually desired if all of the Walsh codes were present. The gaindoes not continually change to maintain an output power of 20 dBm (AGC) since this woulddefeat and fight the benefits of power control in the system. The user may reduce or limit thepower output level by adjusting the peak power limit as described below. The user peakpower switches will set the unit’s output power up to 14 dB below the maximum poweroutput of 20 dBm the user interface to control this feature is the peak power switches.The Mini has 30 dB of gain control in the uplink and downlink signal paths. This gain iscontrolled by two methods. Up to 14 dB can be controlled by adjusting the user peak limitswitches located behind an access plate on the side of the unit to limit the maximum outputpower level. The uplink and downlink attenuators are controlled by the internalmicroprocessor to adjust the maximum gain of the unit for both paths. The uplink and dowlinksignal paths are adjusted to the same setting by the microprocessor unless the user offsets,reduces the gain in the uplink signal path. The user has control to reduce the uplink gain by 6dB, this can be used to balance the uplink and downlink paths as well as reduce contributionof noise to the base station receivers.
Preliminary DocumentCI Wireless Inc. 11/19/99 2Downlink Peak Power Limit SwitchesPower Limit (dBm) Six Seven Eight20 off off off18 on off off16 off on off14 on on off12 off off on10 on off on 8 off on on 6 on on onUplink Gain Offset, reduces uplink gainGain Offset (dBm) One Two0off off-2 on off-4 off on-6 on onIf a unit is moved from one location to another pressing the reset switch will restart theautomatic set up feature. If the peak limit and uplink gain offset switches are preset when theunit is installed the mini will first attempt to set itself up to the full RF output power of 20dBm and then reduce power as instructed by the peak limit and uplink gain offset switches.The Mini has a total of 30 dB of gain control in the uplink and downlink signal paths which iscontrolled by the microprocessor. The microprocessor monitors the up link and down linkdetected signal levels and adjusts the gain to prevent overdriving the linear power amplifiercircuits.The mini monitors the downlink detected signal and adjusts the gain to achieve rated outputpower, 20 dBm. The uplink attenuation is adjusted by the microprocessor to the same gainlevel. Path loss is normally equal in both directions. The microprocessor continues tomonitor the detected output power on both paths to prevent overdrive. Should the downlinkdetected power increase above the desired level, the processor will reduce the gain in both uplink and down link paths. A subscriber unit getting very close to the rerad antenna, maycauses uplink signal overdrive. The processor will temporarily reduce the gain in the up link(reverse) path when uplink signal overdrive is sensed, which will reduce the coverage duringthis condition. Proper placement of the rerad antenna will reduce the occurrence of thiscondition.The output power level setting and the maximum detected level, along with date and time, arerecorded in the history log file.
Preliminary DocumentCI Wireless Inc. 11/19/99 3Protocol SelectionTo insure proper RF power output the proper protocol must be selected this insures thesoftware will properly distinguish the detected RF power level. CDMA is the only protocolthat requires a different look up table/RF calibration.Protocol Selection Switch FiveCDMA OnAll Other* Off*All other protocols include; AMPS, GSM, PCS 1900, CDMA, IDEN, ESMR, TDMABand SelectionThe Mini is available in two models, a 15 Mhz bandwidth unit and a 5 Mhz bandwidth unit.Selection of the proper operating band A, B, or C with the 15 Mhz unit and D, E, or F with the5 Mhz model is user selectable with two dip switches as follows:Band Selection Band Width Switch 3 Switch 4A 15 off offB 15 on offC 15 off onD 5 off offE 5 on offF 5 off onIf the switches are improperly set (On/On), the unit will not function. This fault will beindicated by the DC power on LED Indicator flashing green.Note: If the band selection switch is changed after the unit is powered up the unit will notchange frequency until the (1) power is cycled or (2) the reset switch is pressed, (Activatingthe reset switch will make the unit go through the set up cycle).Remote AlarmingRemote alarming is accomplished with a factory install modem and software option. TheMini microprocessor will detect the modem and initialize the required software. By dialinginto the unit, it may now be programmed to the desired response numbers and alarm codes.Access to programming mode requires entering a user selected 5-digit password.1. Telephone Number 20 digits, maximumInclude required access codes such as 9If required by a PBX. A comma is used to insert adelay.
Preliminary DocumentCI Wireless Inc. 11/19/99 4Pin 10 digits Alarm Code 20 numeric digits2. Telephone Number 20 digits, maximumInclude required access codes such as 9 if required by aPBX. A comma is used to insert a delay.Pin 10 digitsAlarm Code 20 numeric digitsDelay 3 numeric digits, 0 to 999 minutes3. Telephone Number 20 digits, maximumInclude required access codes such as 9 if required by aPBX. A comma is used to insert a delay.Pin 10 digitsAlarm Code 20 numeric digitsDelay 3 numeric digits, 0 to 999 minutesA factory default password is preprogrammed into the unit as 10000. The user may changethis in the program mode of operation. There is also a factory access password.Up to three numbers and alarm codes or paging pin numbers can be sent. The unit will sendan alarm to the first number when an alarm occurs. (The alarm is not sent during the redflashing alert period. It is delayed 5 minutes to be certain the alarm will not clear itself).Each additional number and alarm, which has a programmed sequence, will be sent after theprogrammed delay. The delay, which is set, is a time measurement from initially sending thefirst telephone call and alarm.Should an alarm condition clear, the Mini will send an Alarm Clear alert to the same numberor numbers that were alerted previously. As an example the alarm condition could occur ifthe base station was turned off for maintenance.The unit will record time, date and cause of the last 25 reportable (alarms present after 5minute alert delay) alarms. The user may download these via the modem connection orfactory personnel may also review them. Retrieving log history requires entering thepassword.Command, Clear Log File, is accessible only with the factory password.AlarmsAll alarms are considered major since there is no field replaceable modules in the unit. Allalarms are indicated locally immediately by the Alarm LED indicator blinking red. Once theAlarm State has existed for 5 minutes, the Alarm LED will have a constant red indication.Certain problems will result in the unit automatically shutting down after 5 minutes of sensedfailure. This is done by disabling the RF output stages in both the up link and down link
Preliminary DocumentCI Wireless Inc. 11/19/99 5signal paths. Removing DC power from the unit for a period of 30 seconds or longer willreset the auto shut down.Failure Action Alarm CodeAlarm Cleared 0Synthesizer Lock, Uplink Auto Shut Down 1Synthesizer Lock, Downlink Auto Shut Down 2Downlink RF Overdrive Auto Shut Down 3Uplink RF Overdrive Auto Shut Down 4No Downlink RF Detected* Alarm Only 5Internal Voltage Failure Alarm Only 6Low Current Draw Alarm Only 7Keep Alive(1) Auto Shut Down 8*Minimum detectable RF level is approximately –10dBm. Unit will alarm below this level.(1)Not applicable unless equipped with remote alarms. On units with remote alarms it must beactivated when the remote messaging is set up.Keep AliveThe Mini Keep Alive feature can only be activated once the modem has been installed. Onceactivated by the user in the program mode, this feature requires the Mini, or a remotecomputer, to have contact at least once daily. If no contact is completed, the Mini will shutdown and activate an alarm.The Mini can be programmed requiring a Keep Alive activation from as often as the userdesires, but at least once daily. The factory default requires one daily activation and is set tooccur between 3:00 and 4:00 AM.IndicatorsThe Mini is equipped with three LED indicators on the end of the unit which provide thefollowing information:Indicator State DescriptionOn/Alarm Off No DC Input Power AppliedGreen DC Power on, normal functionGreen Flashing DC Power on, Set up fault-BandSelectionRed Flashing Fault Conditon 5 Minute Warning(See list of alarms)Red Alarm
Preliminary DocumentCI Wireless Inc. 11/19/99 6Uplink RF >-10 dBm>-5 dBm> 0 dBm>5 dBm>10 dBm>15 dBm>20 dBmOver DriveDownlink RF >-10 dBm>-5 dBm> 0 dBm>5 dBm>10 dBm>15 dBm>20 dBmOver Drive*No RF Uplink Detected; this is a normal state for the uplink RF path. The normal levels ofRF received and amplified from the subscriber unit may be below the –10 dBm detectablelevel. A quick check can be made by getting within a few feet of the Rerad Antenna, whilewatching the Uplink RF indicator.Primary PowerThe Mini Unit operates on 9 VDC input power @ 6 Amps. This is supplied with a regulatedwall mount supply, which is UL, and CSA listed. These are available to operate on AC inputvoltages of 90 to 260 VAC.Donor AntennaThis input/output is connected to an antenna, which is directed at the desired cell site.Rerad AntennaThis input/output is connected to an antenna, which is mounted in the desired area to becovered. The antenna should be mounted at a location where adequate coverage is providedfor the area desired while minimizing the potential of subscriber units normally operating closeenough to overdrive the unit.Serial NumberEach unit has a unique electronic serial number. This number is displayed on the decal on theunit and is also displayed with the history log when using the modem interconnect.
Preliminary DocumentCI Wireless Inc. 11/19/99 7Installation:Note 1: qualified technicians should only perform Installation and system set up. The user is cautioned thatmodification or changes to this device not expressly approved by the party responsible for compliance could voidthe user’s authority to operate this equipment.Note 2: Manufacturer’s rated output power of this equipment is for single carrier operation. For situations whenmultiple carrier signals are present, the rating would have to be reduced by 3.5 dBm, especially where the outputsignal is re-radiated and can cause interference to the adjacent band users. This power reduction is to bedetermined by means of input power or gain reduction and not by an attenuator at the output device.Note 3: This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that thisdevice does not cause harmful interference.IntroductionEko-Mini is quick and easy to install, using a minimum set of common tools. This section willprovide the basic steps to performing the installation of EkoCel -Mini. Please read completeinstructions before beginning assembly.Getting Started:Unpack all of the boxes and insure all of the material is included for your installationrequirements and undamaged in shipment. QTY Description1 EkoCel -Mini1 +9 VDC Power Module1 AC Power Cord4 Mounting Screws and wall inserts1 Manual1 Test Data, Factory1 Optional, Telephone cable 6 ft.Mounting the Hardware:-Mount the Mini Unit with the four mounting screws provided.-Connect coaxial cables the Donor and Rerad ports.-Connect primary power module to AC source and connect 9 VDC output to Mini DC Input.-Optional connect telephone line to RJ11 jack.Refer to attached drawing for any clarification.Select Mounting location of Donor directional antenna and orientated toward the base stationto maximize signal level. For best performance this should be line of sight between the Donorantenna and the base station antenna.Select mounting location of Rerad antenna to provide maximum coverage while maintaining atleast 20 feet from normal usage if possible to reduce the possibility of overdrive.
Preliminary DocumentCI Wireless Inc. 11/19/99 8IMPORTANT: Before performing maintenance on any module, make sure power is OFF.System Set Up Instructions:-Apply Power after setting user switches and unit will automatically set up. -Set Band Switches to desired Band (Preset at Factory to A or D depending on the ModelsBW 15 or 5 Mhz) -Set UL gain offset as desired (Preset to 4 dB offset) -Set DL RF Output Power to desired maximum Level (Factory Preset to full Power, 20 dBmComposite) -Set Protocol selection Switch (Factory Preset to All Other, SW 5-OFF)-For set up of optional remote alarming refer to software set up instructions.
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Preliminary DocumentCI Wireless Inc. 11/19/99 10Trouble Shooting:The Eko-Mini has no field replaceable parts; repair is down to improper set up or softwareprogramming, installation or defective units.Problem Check Corrective ActionNo Power Power Source Reconnect or repairPower Source OK Replace UnitAlarm Indication No RF Downlink Indication Check RF Input SourceNo Uplink RF Indication Check RF Antenna InputRecycle AC Power No ChangeReset Switch No ChangeReplace UnitRemote Alarms inoperable Generate Alarm, remove RFinput Program SoftwareSoftware OK, Check Telephone lineTelephone Line OK Replace UnitNo RF DownLink Power Check Band Switches Set Switches & recyclePowerSwitches Set properly Replace unitLow DownLink RF Power Check Input Power Level Relocate Donor Antenna,improve signal strengthIncrease Donor AntennaGainShorten Coaxial Cable lengthSignal Strength Good Reset Switch, Start newsystem set upLow RF Output Power Replace Unit
Preliminary DocumentCI Wireless Inc. 11/19/99 11ParametersMINI-19 Forward ReverseOperating Frequency, (MHz) 1930 to 1990 1850 to 1910 Band Selective A, B, or C, (MHz), 1 dB Bw 14.75 14.75 Band Selective, D, E, or F, (MHz), 1 dB Bw 4.75 4.75Gain, (dB), Adjustable in 2 dB steps 40 to 70 40 to 70Peak Limiting adjustable, (dB) 14 14Gain Flatness, (dB) +1/-2 +1/-2Noise Figure, (dB) ≤8≤8Return Loss (dB) 15 15Composite Power, User Selectable, (dBm) 6 to 20 6 to 20 (Up Link tracks down link setting)Group Delay, (usec) ≤4≤4Spurious Emissions, Out of Band, (dBm) ≤13 ≤13Input RF Signal, (dBm) <-20 <-20Operating Temperature, (°C) +5 to +45 +5 to +45Primary Power, (VAC) 90 to 260Current Draw, (Amps) .5Enclosure Dimensions, HxWxD, (Inches) 2.25x7x14.5Weight, (lbs.) 6.5MTBF, (hours) 75,000RF Connectors, Donor, Rerad (2) N/FemaleAlarms, Power On Forward Signal, No RF Detected/ RF Detected / Overdrive Current Reverse Signal, RF Detect / OverdriveOptional Remote Alarms Telephone Modem

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