CHPA
S
ERIES
D
OC
.01023245
R
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3-17
Table 3-11 Notes:
1.
CHPA Operating State is indicated as follows:
2 1 0 CHPA
State
0 0 0 Not
used
0 0 1 Heater
Time
Delay
0 1 0 Standby
0 1 1 Beam
On
Sequence
1 0 0 Beam
On
1
0
1
Beam On and RF Inhibited
1 1 0 Beam
Off
Sequence
1 1 1 Fault
Table 3-12. Secondary Status Bytes
Byte Bit
Bit
Definition
1 7(MSB)
Parity
6
Complement of bit 5
5
4
Valid control point
Valid control point
Bit 5
Bit 4
Control Point
0 0 Local
1 0 Remote
1 1 Computer
Interface
(CIF)
3
BB-RAM Error Detected
. This bit is set if the battery-backed RAM contents are
suspected to be corrupt. This condition usually indicates that the BB-RAM must be
replaced. Under this circumstance, firmware defaults are used for all alarm and fault
settings.
2 Not
used
1
High RF Alarm
. This bit is set during High RF Alarm.
0(LSB)
Low RF Alarm
. This bit is set during Low RF Alarm.
2 7(MSB)
Parity
6
Complement of bit 5
5
RF Peak Output Power
. This bit is set if power meter is detecting peak power.
4 Not
used
3
Power Fail Signal Timeout
. This bit is set if the AC Power Fail signal is detected true
for more than 10 seconds and corresponds to the front panel “PFAL” report.
2 Not
used
1 Not
used
0(LSB) Not
used