Comtech EF Data MBT-5000A Installation And Operation Manual page 123

NOTE – Instruction Code Qualifiers, as defined in Sect. 7.2.5.5, are used as follows in the command/query tables' 'Response to Command'
columns:
= Message OK
* Message OK, but not permitted in current mode
? Received OK, but invalid arguments found
# Message OK, but unit is not in Remote mode
! Invalid instruction
Serial-based Remote Product Management
MBT-5000A L-Band Up/Down Converter System
7–10
Revision 1
MN-MBT-5000A