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CHPA
S
ERIES
3-18
THIS
DOCUMENT
IS
THE
PROPERTY
OF
COMMUNICATIONS
&
POWER
INDUSTRIES.
REPRODUCTION
OR
RELEASE
WITHOUT
EXPRESS
PERMISSION
IS
STRICTLY
PROHIBITED
D
OC
.01023245
R
EV
.R
Table 3-13. Fault and Miscellaneous Status
Byte Bit
Bit
Definition
1 7(MSB)
Parity
6
Complement of bit 5
5
Helix Over Voltage
4 Helix
Under
Voltage
3
Helix Average Over Current
2
Power Supply Arc Trip
1
DC Buss Under Voltage
0(LSB) Helix Voltage Detected in Standby
2 7(MSB)
Parity
6
Complement of bit 5
5 Reflected
RF
4
PS Thermal/Interlocks Open
3
TWT Thermal Fault
2 High
RF
Fault
1 Low
RF
Fault
0(LSB) External Interlock Fault
3 7(MSB)
Parity
6
Complement of bit 5
5 Not
used
4 Not
used
3 Not
used
2 Not
used
1
Not used (this was originally Low Airflow Fault)
0(LSB) SSIPA Over Current Fault