IX-1
Section IX - Operating Procedure
Assuming the previous installation instructions have been completed and cautions noted, and the TAV-
25 power amplifier is ready to receive a properly modulated video and audio signal, proceed with the
following steps to place the system in operation. The TAV-25 power amplifier has been factory aligned
for channel frequency (per system specification), signal levels and optimum performance.
IT IS
HIGHLY RECOMMENDED
THAT YOU RUN YOUR SYSTEM INTO A DUMMY LOAD BEFORE
INSTALLING TO MAKE SURE THERE ARE NO DAMAGES CAUSED IN SHIPPING AND THE UNIT IS
RUNNING PROPERLY
1. Do not apply RF drive signal to the power amplifier at this time.
2. Verify that all control and RF cables are tight and properly seated in or on the mating connector.
3. Plug the modulator or processor into AC mains.
4. Plug the 3U power amplifier enclosure into AC mains.
5. Switch AC rocker switch to “ON” position.
6. Verify that the power amplifier enclosure’s fan is on.
7. Ensure that the modulator/processor is turned on and set up according to its instructions. Depress
the POWER tactile button to turn the unit on.
8. The internal soft start circuitry will turn the bias voltages off until the power supply to the amplifier
pallets is fully stable. The message on the LCD indicates when the soft start is running. Once
complete, the Forward and Reflected Power and Power Supply readings will appear on the LCD.
9. After the soft start is complete, apply the RF drive signal (which still should be turned down)
between the modulator or processor and the power amplifier RF In. This ensures that the RF drive
signal is applied only after the power supply is stable and the bias voltages are applied to the
amplifier.
