Retrofit Instruction

ManualsBrandsPineapple Technology ManualsElectronicsBroadcast Translator Retrofit Kit

UST106 Pro

PREPARATORY MEASUREMENTS AND ADJUSTMENTS:

The following adjustments are recommended to ensure that the transmitter

is 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 the

UST-106A instruction Manual) on the upconverter to insure that the proper range

is maintained. This is important to protect the power amplifier from damage by

overdrive. Over drive damage is not covered by warranty.

2. Measure the purity of the up-converted signal. This measurement is made

to insure that the mixing products are at least

-60dBc or better. The power

amplifier is broadband and will amplify these unwanted signals making filtering

necessary if they are out of specs to start with.

3. Adjust the aural/visual ratio to -13 dB (5%). This is a typical setting for

most applications, however, the Power Amplifier can be used at higher levels if

necessary with only minor degradation in performance.

***WARNING***

BEFORE REMOVING ANY PARTS OR WIRE, THE TRANSMITTER OR

TRANSPOSER MUST BE TURNED OFF AND DISCONNECTED FROM

THE PRIMARY AC POWER SOURCE. ALL OTHER EXTERNAL

CONNECTIONS INCLUDING ANTENNA MUST BE DISCONNECTED.

USE A GROUNDING ROD TO DISCHARGE ANY RESIDUAL CHARGES

FROM THE HIGH VOLTAGE SUPPLY, CAVITY ECT. MOVE THE

EQUIPMENT AWAY FROM OTHER EQUIPMENT SO THAT THERE

WILL BE PLENTY OF ROOM TO WORK ON THE FRONT AND REAR

OF THE EQUIPMENT TO BE MODIFIED.

***WARNING***

Summary of content (7 pages)

PAGE 1
UST106 Pro PREPARATORY MEASUREMENTS AND ADJUSTMENTS: The following adjustments are recommended to ensure that the transmitter is 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 the UST-106A instruction Manual) on the upconverter to insure that the proper range is maintained.
PAGE 2
Unplug translator, from external AC power. Turn off breaker for UST1. 106A making sure all power is removed from transmitter before working on translator. 2. Open both front and back doors to ensure you have plenty of room to work. 3. Disconnect RF in and RF out cables from the tube and cavity apparatus. 4. Go to the rear of the translator and locate the high voltage wire.
PAGE 3
8. Disconnect the RF Cables from the directional coupler. 9. Disconnect the RF output cable from the notch filter and pull the cable through the back of the translator. Pull the RF input cable that normally connects to the tube and cavity assembly through the back of the translator. It may be necessary to remove grommets in the back panel. 10. Disconnect all wiring to the blower motor. Unbolt it from the back of the translator, and remove it. 11.
PAGE 4
14. Go to the front of the translator. Hold the UST106A Pro solid state amplifier close to the front panel and feed the AC power cable, DC power cable, and RF output cable through the uncovered blower hole. 15. Connect the RF input cable coming out of the UST106A Pro solid state amp to the RF IN panel bulkhead type “N” connector. Screw the nut onto the type N connector to in order to secure the type N connector to the bulkhead. 16.
PAGE 5
19. Place the provided ground strap over bolt #5 for the power supply, reinstall that nut, and attach the other end of the ground strap to translator rack using the hardware supplied. 20. Plug mating AC power connectors going to the power supply and U106T Pro amplifier together. 21. Plug mating DC power connectors going to the power supply and U106T Pro amplifier together. 22.
PAGE 6
26. Move to the front of the cabinet. Plug in UST106 Pro AC power cable to 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 the output connector of the translator. 32. Turn on translator main power switch located at the bottom of the front of the translator. 33. Turn on UST106 Pro amplifier using the circuit breaker switch. 34.
PAGE 7
connection from the output of the translator to the load and verify the load is good. 40. Decrease the aural power as low as possible using the equipment that is supplying the 45 MHz IF signal. 41. Do the following steps to ensure that the power meter is properly calibrated. Using a spectrum analyzer and the external wattmeter and, apply a black picture with “0 IRE setup”, adjust the power control such that the wattmeter reads the desired peak sync power times 0.