AR 10012510, Operating And Service Manual

Page: 29 / 72

Model 200T8G18A/250T8G18
Rev D 11
3.3 FRONT PANEL FEATURES
Refer to Figure 3-2 below and Table 3-1 for descriptions.
Figure 3-2. TWTA Front Panel Features
Table 3-1. Front Panel Feature Descriptions
Item Title Function
1 MAIN POWER Switchable 16 A. circuit breaker; connects primary power to power supplies.
2. OPERATE Push-button; turns on high voltage and SSA when all faults and heater delay are cleared.
3. STANDBY Push-button; shuts off SSA 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. RF INPUT RF input; Type K connector (on front panel connector configurations)
12. KEYLOCK SWITCH Allows operator to inhibit the TWTA, to enable front panel control, or to enable computer control.
13. EMERGENCY COVER Provides access to emergency bypass switches, which permit manual control of the amplifier.
14. FORWARD SAMPLE RF forward power sample connector (on front panel connector configurations)