Comtech EF Data XTRT-400C Operation And Installation Manual page 140

Reject and ASCII Codes
Command Reject Codes is a list of Reject Codes that are returned
when an illegal or unsupported command is sent. ASCII Code Cross
Reference is a cross reference list of the ASCII Codes that are used in
generating the commands and queries of the protocol.
MNC-0500-038
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Amplifier Communication and Protocol, XTRT, Touchscreen TWTA
ASCII
Reject Reason
Character
a Command byte not recognized
b Illegal parameter or parameter out of range
c System in local mode
d Slow command being executed
e Hardware or Software failure
f High voltage is OFF
g RF is inhibited
h HPA Power is OFF
i Invalid key or key sequence
j Change in setting can only be made locally
k A fault condition exists
l System in Automatic Mode
m-z Reserved
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Table 5
Revision 2