AR 10009284, Operating And Service Manual

Page: 25 / 62

Model 40T26G40A
Rev A 11
3.3 FRONT PANEL FEATURES
Front panel features are shown in Figure 3-2.
1 11 6 7 8
10
12 9 5 3 2
4
STANDBY
POWER
MAIN
REMOTE
INHIBIT
LOCAL
EXIT
Model 40T26G40
40 Watts
26.5 - 40 GHz
OPERATE
Figure 3-2. TWTA Front Panel
Table 3-1. TWTA Front Panel Features
Item Title Function
1 MAIN POWER Switchable 7.5 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 TWT beam 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 the operator to inhibit the TWTA, to enable front panel control, or to enable computer
control.
12 Emergency Switch Cover Provides access to the emergency bypass switches, which permit manual control of the amplifier.