XT-50, XT-80, and XT-100 Amplifiers
Installation
2-15
Type
Pin
Function
Return
Pin**
Control
Interfaces
(All circuits are
active LOW)
2
3
5
6
High Voltage Select ON
Control
High Voltage Select OFF
Control
External Interlock*
Fault Reset Control
4
4
4
4
Pin 4 tied to
Pin 16
Digital Status
Circuits
(All circuits are
active LOW)
8
10
12
21
23
25
High Voltage ON Status
Indicator
Summary Fault Indicator
High Voltage Select ON
Indicator
Standby Status Indicator
FTD (Filament Time Delay)
Remote/Local Indicator
7
22
24
9
11
13
Pins 7, 9,11, and 22
tied together.
May be interchanged
Analog Status
Circuits
14
15
17
Helix Current Monitor
High Voltage Monitor
TWT Temperature Monitor
16
16
16
Pin 16 tied to Pin 4
Output Voltage
Circuits
1
19
+24 Volts DC
+15 Volts DC
16
16
Ground
4,16
Common Ground (connected)
NA
*
Pin 5 must be connected to Pin 4 with special jumper or external interlock circuit.
.
Figure 2-14
. Interface Cable “D” Connector Pinouts
