CPI T02KO, Руководство по установке и эксплуатации

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KA BAND OUTDOOR TWT AMPLIFIER
3-18
INSTALLATION AND OPERATION MANUAL
Successful completion of steps (a) through (c) and 3.6.1.1 and 3.6.1.2 indicates:
•
Self-tests were successfully completed.
•
Alarm and fault limit levels are properly set.
•
The TWT (Traveling Wave Tube) heater is warmed up.
•
High Voltage can be turned ON.
3.7.2 Initial Check, High Voltage ON
Proceed as follows:
1. Verify that the amplifier output (J8) is terminated with a RF load capable of dissipating
full rated power.
2. Verify that the RF Drive is OFF.
3. Verify that the RMT LED is not lighted.
4. Verify that the amplifier is in STBY state; the STBY LED should be on. (If the FLT
indicator is ON, press RESET to clear the fault.
5. Verify that a power meter is connected to the RF monitor (J4).
6. Press the HV ON switch.
NOTE: The Low and High RF limits are set at the factory for initial
checkout purposes. These values can be set to the desired operational
values via the serial interface after initial checkout.
7. After approximately 3 seconds, the Beam On Sequence (BONS) should complete and
the XMT LED should light.
8. Starting at –40 dBm, slowly increase the RF drive until rated output is achieved.
CAUTION! Do not exceed a RF drive of -16 dBm. The HPA utilizes
an RF protection fold back circuit that will increase input attenuation
if the amplifier is driven beyond its rated power. Beyond the fold
back limit, an alarm will indicate, followed by a fault that will latch
the unit into a Fault state.
9. Press the HV ON switch to end initial checkout. The STBY LED should light.