Rf Trip Limits/Switch Port Relay Settings; Table B-6. Rf Alarms And Faults - CPI Satcom Division VZU-6997 Series Installation, Operation And Maintenance Manual

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CHPA SERIES
intermodulation products without linearizer. It is best to now finely tune the Phase and
Magnitude controls to assure that the best tuning has been achieved - this is an iterative process,
and some fine tweaking is usually necessary.
B.13 RF Trip Limits/Switch Port Relay Settings
Both RF alarms and faults will be active simultaneously. Alarms provide visual and audible
warnings. In addition to visual and audible warnings, faults cause the CHPA to enter the Fault
state. See Table B-6 for a description of the functions in this category.

Table B-6. RF Alarms and Faults

Function Name
High RF Alarm
High RF Fault
Low RF Alarm
Low RF Fault
High Reflected RF
Fault
Low RF Relay
Fault Relay
The sample screen for RF Trip Limits is as follows:
L O C A L
S
T A N D B Y
R F
T R I
B-16
Possible Entries
Numerical entry - format dictated
by the RF Display setting
Numerical entry - format dictated
by the RF Display setting
Numerical entry - format dictated
by the RF Display setting
Numerical entry - format dictated
by the RF Display setting
Numerical entry - format dictated
by the RF Display setting
Flexible/Rigid
Fault, Low RF, Sum Fault, ((High
Voltage On) and (NOT RF
Inhibit)), High Voltage ON
P
L I
M I
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REPRODUCTION OR RELEASE WITHOUT EXPRESS PERMISSION IS STRICTLY PROHIBITED
Description
If the RF output exceeds this limit, the panel
will indicate an alarm condition.
If the RF output exceeds this limit, the CHPA
enters the Fault state.
If the RF output falls under this limit, the
panel will indicate an alarm condition. This
setting is also used to trigger the Low RF
Relay.
If the RF output falls under this limit, the
CHPA enters the Fault state.
If the Reflected RF exceeds this limit, the
CHPA enters the Fault state.
Select either Flexible or Rigid mode
operation for the Low RF relay.
The Fault Relay may be reassigned to other
signals as shown.
T S
1
5
:
2
7
t
D
.01023245 R
.L
OC
EV

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