Pineapple Technology U106T-PRO Broadcast Translator Retrofit Kit User Manual Installation Instruction for retrofit kit

Pineapple Technology, Inc. Broadcast Translator Retrofit Kit Installation Instruction for retrofit kit

Contents

Installation Instruction for retrofit kit

UST106 ProPREPARATORY MEASUREMENTS AND ADJUSTMENTS:The following adjustments are recommended to ensure that the transmitteris working properly before any changes are made.1. Measure the output of the up-converter and be certain the level is set at+24dBm. The front panel Power adjustment knob should vary the +24 dBm by+1 to -4 dB only. If the output is out of range adjust the variable resistor (see theUST-106A instruction Manual) on the upconverter to insure that the proper rangeis maintained. This is important to protect the power amplifier from damage byoverdrive. Over drive damage is not covered by warranty.2. Measure the purity of the up-converted signal. This measurement is madeto insure that the mixing products are at least -60dBc or better. The poweramplifier is broadband and will amplify these unwanted signals making filteringnecessary if they are out of specs to start with.3. Adjust the aural/visual ratio to -13 dB (5%). This is a typical setting formost applications, however, the Power Amplifier can be used at higher levels ifnecessary with only minor degradation in performance.***WARNING***BEFORE REMOVING ANY PARTS OR WIRE, THE TRANSMITTER ORTRANSPOSER MUST BE TURNED OFF AND DISCONNECTED FROMTHE PRIMARY AC POWER SOURCE. ALL OTHER EXTERNALCONNECTIONS INCLUDING ANTENNA MUST BE DISCONNECTED.USE A GROUNDING ROD TO DISCHARGE ANY RESIDUAL CHARGESFROM THE HIGH VOLTAGE SUPPLY, CAVITY ECT. MOVE THEEQUIPMENT AWAY FROM OTHER EQUIPMENT SO THAT THEREWILL BE PLENTY OF ROOM TO WORK ON THE FRONT AND REAROF THE EQUIPMENT TO BE MODIFIED.***WARNING***
1. Unplug translator, from external AC power. Turn off breaker for UST-106A making sure all power is removed from transmitter before working ontranslator.2. Open both front and back doors to ensure you have plenty of room towork.3. Disconnect RF in and RF out cables from the tube and cavityapparatus.4. Go to the rear of the translator and locate the high voltage wire. Cut thehigh voltage wire on the left side in the back of the translator atapproximately 1 foot from the top of the cabinet just below the switch.5. Go to the front of the translator. From the front of the translator unboltthe four bolts securing the tube and cavity apparatus from the front of thetranslator.6. Gently pull off the tube and cavity and set it aside and save.7. Move to the back of the translator.
8. Disconnect the RF Cables from the directional coupler.9. Disconnect the RF output cable from the notch filter and pull the cablethrough the back of the translator. Pull the RF input cable that normallyconnects to the tube and cavity assembly through the back of the translator. Itmay be necessary to remove grommets in the back panel.10. Disconnect all wiring to the blower motor. Unbolt it from the back ofthe translator, and remove it.11. Remove the 3rd, 4th,and 5th nuts from the top of the rack on the right side.12. Unbolt the notch filter and remove it from the translator.At this time all of the transmitter components that need to beremoved from the TTC translator have been removed. Cleanthe dust and debris from the areas where parts have beenremoved.13. Bolt the provided panel labeled “RF IN” to the blower hole on left sideof the back of the translator using the hardware supplied.
14. Go to the front of the translator. Hold the UST106A Pro solid stateamplifier close to the front panel and feed the AC power cable, DC powercable, and RF output cable through the uncovered blower hole.15. Connect the RF input cable coming out of the UST106A Pro solidstate amp to the RF IN panel bulkhead type “N” connector. Screw the nutonto the type N connector to in order to secure the type N connector to thebulkhead.16. Place the UST106A Pro Solid state amplifier on the bolts previouslyused for the tube and cavity and re-install the nuts to fasten the amplifier inplace, making sure all cables go through the above mentioned blower hole.17. Go to the back of the translator. Place the provided plate labeled “RFOUT” over the left side blower hole making sure all cables fit through the cutout on the lower portion of the plate.18. Attached to the power supply is a bracket with three holes. Place thebracket over the 3rd, 4th, and 5th bolts from the top of the rack (the sameones where the nuts were removed earlier), and re-install the nuts on the 3rdand 4th bolts to fasten the power supply to the rack.
19. Place the provided ground strap over bolt #5 for the power supply, re-install that nut, and attach the other end of the ground strap to translator rackusing the hardware supplied.20. Plug mating AC power connectors going to the power supply andU106T Pro amplifier together.21. Plug mating DC power connectors going to the power supply andU106T Pro amplifier together.22. From the rear of the translator, attach the end of the RF cablepreviously going to the cavity assembly to the UST106 Pro amplifier to thebulkhead connector on the “RF IN” plate.23. Mount the provided bandpass filter to the right side of the cabinet,using the existing holes where the notch filter used to be attached.24. Connect the RF Output cable from the UST106 Pro amplifier comingthrough the cabinet to the provided bandpass filter RF Input connector.25. Connect the provided RF Output cable from the bandpass filter to thedirectional coupler.
26. Move to the front of the cabinet. Plug in UST106 Pro AC power cableto the auxiliary plug in the front of the transmitter.27. Close the back of the translator.28. Connect translator to AC power source.31. Attach a dummy load with an in-line sample port and wattmeter to theoutput connector of the translator.32. Turn on translator main power switch located at the bottom of the frontof the translator.33. Turn on UST106 Pro amplifier using the circuit breaker switch.34. Test and adjust the translator as necessary with the following steps:35. Turn the power output control fully counter-clockwise (minimum power output) setting.36. Set the Meter Selector on the top Meter Panel to Forward.37. Connect a 45 MHz IF source containing visual and aural TV signals tothe RF input connector of the translator on the top of the rack.38. Increase Power Output control to achieve a reading of 100% on thefront of the panel meter.39. Set the Meter Selector on the top Meter Panel to Reverse. Essentiallyzero power (< 5% power) should be read. If not then, check the RF cable
connection from the output of the translator to the load and verify the load isgood.40. Decrease the aural power as low as possible using the equipment that issupplying the 45 MHz IF signal.41. Do the following steps to ensure that the power meter is properlycalibrated. Using a spectrum analyzer and the external wattmeter and, apply ablack picture with “0 IRE setup”, adjust the power control such that thewattmeter reads the desired peak sync power times 0.6, and then follow theprocedure in the UST-106A instruction manual to adjust the power meter toread 100% . Increase aural power until the desired visual to aural ratio isachieved. Observe the -4.5 and +9 MHz intermodulation products. Thesesignals should be -50 dBc or lower.42. Set the Meter Selector on the top Meter Panel to Aural. Follow theprocedure in the UST-106A instruction manual to adjust the aural powermeter to read the desired power.After completing the procedure outlined above, the transmitter is ready to goon line. Turn off the transmitter and remove the dummy load and wattmeter.Connect the antenna to the output connector and adjust the power control for100% on the multimeter (when the meter selector is in the forward position)and check the reflected power. The reflected power should be about the sameas that recorded before the modification.

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