Xicom XTU-400K, Operation And Installation Manual

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MNC-0500-002 30 of 36 Revision H
Amplifier Communication and Protocol, Octagon ISA CPU
Max RF Power Trip
Command Byte : 'M'
Function : Sets a Max RF trip point. If output power exceeds the set point, an alarm or
fault is generated provided the HPA has processed an “Enable RF Limits” command
('R').
Parameter :
"AXXXX" to set an Alarm trip point,
"FXXXX" to set a Fault trip point, “D” to disable.
XXXX is the desired trip point in Watts.
High Voltage Level
Command Byte : 'N'
Function : Allows the user to drop the high voltage by 1kV to improve tube performance
on certain units.
Parameters :
'1' - Reduces the high voltage level (sets Ku band mode).
'0' - Restores the high voltage level to it's default state.
Compatibility : Triband HPAs only.
Reflected RF Trip
Command Byte : 'O'
Function : Sets a Reflected RF trip point. If reflected power exceeds the set point, an
alarm or fault is generated, as specified by the user. (Note: A hardware Reflected RF
Trip Point is pre-set at the factory. You cannot adjust the hardware trip point by changing
the software trip point). By default, the trip point is not enabled until the “Enable RF
Limits” command ('R') is processed.
Parameter :
"AXXXX" to set an Alarm trip point,
"FXXXX" to set a Fault trip point, “D” to disable.
XXXX is the desired trip point in Watts.