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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
D
.01023245 R
.L
OC
EV
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REPRODUCTION OR RELEASE WITHOUT EXPRESS PERMISSION IS STRICTLY PROHIBITED
CHPA SERIES
3-19
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