KA BAND OUTDOOR TWT AMPLIFIER
3-16
Table 3-5. Helix and RF Settings Fault and Alarm Ranges: 175W CW / 250W Peak
Fault Name
Minimum
Setting
Factory
Preset
Default
Settings
Maximum
Setting
Remarks
Low RF
Alarm
0 W
0 W
0 W
170 W
See 3.8 for normal
operation.
Low RF
Fault
0 W
0 W
0 W
175 W
See 3.8 for normal
operation.
High RF
Alarm
0 W
155W
155 W
175 W
See 3.8 for normal
operation.
High RF
Fault
0 W
160W
160 W
185 W
See 3.8 for normal
operation.
High
Reflected RF
Fault
0W
10 W
10 W
25 W
Factory Set. Do not
change.
Helix Over
Voltage
13.0 kV
TWT NPV +
300V
14.0 kV
14.5 kV
Factory Set. Do not
change.
Helix Under
Voltage
0.00 kV
TWT NPV -
300V
13.5 kV
14.0 kV
Factory Set. Do not
change.
Helix Over
Current
1.0 mA
3.0 mA
3.0 mA
5.0 mA
Factory Set. Do not
change.
Helix voltage
in standby
1.00 kV
4.00 kV
4.00 kV
4.00 kV
Factory Set. Do not
change.
INSTALLATION AND OPERATION MANUAL