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アンプ Advanced Amplifiers AA-28G-2KW-PTのPDF ユーザーマニュアルをオンラインで閲覧またはダウンロードできます。Advanced Amplifiers AA-28G-2KW-PT 13 ページ。

The STANDBY button illuminates and the OPERATE button is extinguished. Front panel display

shows "Standby" on the status bar again.

Power TWTA Off:

After placing the TWTA in STANDBY press WARM UP button to power-down the TWTA.

If the TWTA was operating at high-duty the amplifier should be run in STANDBY an additional length

of time to allow the TWT to cool.

Reset:

If any monitored parameter falls outside the limits set in the processors, the Main processor interrupts

pulses and disengages the high voltage supplies in a fashion similar to STANDBY but latches the

system in RESET. The RESET button is illuminated and the front panel display status area shows the

word "Reset" and the Home screen lists the faults which triggered the RESET, together with values

latched at the moment the fault occured.

After the cause of the fault has been corrected press the RESET button to return the TWTA to

STANDBY.

TWT Temperature, cooling fans, cover Interlock, VSWR and Helix Current are all directly monitored

by the Main Control and will cause the Main Control processor to place the TWTA in RESET if the

amplifier is in WARMUP, STANDBY or OPERATE.

Heater Voltage and Current, Drive Voltage, Collector Voltage and Current, Body Voltage and Cathode

Current are all directly monitored by the RF Control. Collector Voltage and Body Voltage will not

trigger a fault until the TWTA is in operate. Heater Current and Heater Voltage will not trigger a fault

during a specified time after the unit was turned on.

Grid Voltage and the RF Control Board +9V supply are handled uniquely; they are monitored by the

RF Control processor but will initiate a Flashing Reset.

Flashing Reset:

FLASHING RESET indicates a fault which needs the Main Control board to turn the unit off to prevent

serious damage.

The following events will trigger the Flashing Reset.

Grid voltage out of range or the RF Control Board +9V supply too high. High +9V supply or high grid

voltage (absolute value) will cause a FLASHING RESET at any time while low grid voltage will cause

a FLASHING RESET only in WARM UP or STANDBY. Low grid voltage in OPERATE will not cause

a fault.

When there is an unexpected behavior of Main Control Board or RF Control Board firmware which

trigger a watchdog to reset the microcontroller. After such a reset, the unit will immediately go to

FLASHING RESET.

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