Technical Manual
PINEAPPLE TECHNOLOGY, INC.
UTX5KW-A Operating and Service Manual
IV — TRANSMITTER TURN ON PROCEDURE
Page 6
IV — TRANSMITTER TURN ON PROCEDURE
Before applying AC Power to the transmitter for initial turn on and check out, the installation should be approved
by a qualied broadcast engineer. The Turn on procedure that follows is recommended by Pineapple Technology,
Inc. engineering staff:
1. Check transmitter load or antenna for proper installation and connection to the transmitter.
2. Open the transmitter and inspect all cables and wires for lose connections or broken wires in the rack assembly
3. Check for damage to the equipment mounted in the rack.
4. Check all AC breakers and on/off switches to ensure that all are OFF.
5. TURN ON THE MAIN AC BREAKER LOCATED IN THE SUB-PANEL WHERE THE AC POWER CORD
WAS CONNECTED.
6. TURN ON THE MAIN AC BREAKER LOCATED ON THE ACDIS5 POWER DISTRIBUTION PANEL
LOCATED ON THE FRONT OF THE TRANSMITTER. A GREEN LIGHT SHOULD COME ONE
INDICATING POWER IS ON.
7. TURN ON THE AC SWITCH LOCATED ON THE FRONT OF THE ADP500. THE INDICATING LIGHTS
SHOULD BE ON AND READY FOR OPERATION
8. TURN ON THE AUX BREAKER LOCATED ON THE ACDIS5 FRONT PANEL. THE PA FANS AND THE
RACK EXHAUST FANS SHOULD COME ON.
9. TURN ON THE POWER SUPPLY BREAKERS LOCATED ON THE FRONT OF THE ACDIS5. CHECK
THE RR6000 POWER MODULES — NINE (9) EACH — TO SEE IF THE GREEN LIGHTS ARE
INDICATING NORMAL OPERATION.
10. USING THE ADP500 & PAS10 CHECK THE IDLING CURRENTS ON EACH PA TO ENSURE THAT
THE CURRENTS ARE IN THE CORRECT RANGE. TYPICAL RANGE IS 1.5 TO 2.5 AMPS. SEE
ADP500 OPERATING SECTION FOR DETAILS
11. TURN ON THE DRV100 DRIVER AMPLIFIER. THE GREEN LIGHT SHOULD COME ON.
NOTICE: The Modulator/Upconverter has been set at the factory so that the output power indication on the
ADP500 will show 100% or 3 KW p-sync power level. It is important to read the instruction manual supplied
with the modulator to locate key adjustment devices on the front panel. The output level adjustment will be
necessary for the next step in the turn on procedure.
12. Locate the level adjustment on the modulator/upconverter and turn the level down to minimum or CCW.
13. Turn on the power switch located on the modulator rear panel.
14. Apply a video signal (1 volt P-P) to the video input terminal
15. Slowly increase the output level adjustment while watching the RF Output level on the ADP500. When the
output gets up to 50% indicated power stop the adjustments.
16. Using the ADP500 reected power indication check the LOAD reected power. This should be less that
5% reected.
17. Return to the PA current readings on the ADP500 to verify that all the currents are approximately the same.
18. With successful performance thru step 17, the transmitter output power can be increased using the output level
adjustment on the modulator to achieve 100%. The aural power can be added at this time not exceeding 10%
of output p-sync power as indicated on the ADP500.