Comtech EF Data XTRT-400C-BUC Operation And Installation Manual page 135

Amplifier Communication and Protocol, XTRT, Touchscreen TWTA
Constant Power (Watts)
Command Byte: 'G'
Function: The HPA seeks the specified power level until Constant Power is terminated by Goto Power (Command
Byte 'D' or 'E') or Terminate Constant Power (Command Byte 'H'). Also called "Auto Gain Stabilization," the
Constant Power (Watts) command allows the user to operate an amplifier over extended periods of time while
maintaining a set power level. Constant Power Mode is intended to compensate for gain drift (due to time or
temperature).
Parameter: The desired power level in "XXXX" Watts.
Compatibility: Attenuator required.
Optional Parameter: "M" – desired power in dBm.
Example: GMxx.x
Terminate Constant Power
Command Byte: 'H'
Function: If active, Constant Power Mode is terminated.
Compatibility: Attenuator required.
RF Inhibit
Command Byte: 'I'
Function: Inhibits RF drive to the TWT.
Compatibility: Attenuator required.
Clear RF Inhibit
Command Byte: 'J'
Function: RF drive to the TWT is enabled.
Compatibility: Attenuator required.
MNC-0500-038 22 of 28 Revision 2
EAR EXPORT CONTROLLED: The information contained in this Manual refers or relates to a product that is subject
to the U.S. Export Administration Regulations (EAR). Transfer of data herein by any means to a Foreign Person,
whether in the U.S. or abroad, may require an export license from the U.S. Department of Commerce.