AR 10012514, Operating And Service Manual

Page: 31 / 72

3.3 FRONT PANEL FEATURES (REFER TO FIGURE 3-2 BELOW)
OPERATE STANDBY
EXIT
MAIN
ADJUST
4
5
1
10
POWER
2 3
11
12
9
8 7 6
INHIBIT
LOCAL
REMOTE
Figure 3-2 TWTA Front Panel
Table 3-1. Front Panel Features
Label Title Function
1 MAIN POWER Switchable 16 A. circuit breaker; connects primary power to power supplies.
2. OPERATE Push-button; turns on high voltage when all faults and heater delay are cleared.
3. STANDBY Push-button; biases grid off and turns off high voltage.
4. ADJUST Rotary knob used as an input device to change values of a variety of
parameters.
5. EXIT Push-button; terminates various menu selection routines and returns to the
previous menu level.
6-9. S1...S4 "Soft Key" push buttons; various menu selection functions.
10. Display Displays numerous parameter values and fault messages.
11. Keylock Switch Allows operator to inhibit the TWTA, to enable front panel control, or to enable
computer control.
12. Emergency switch cover Provides access to emergency bypass switches, which permit manual control
of the amplifier.
Rev A 13