Instruction Code; Instruction Code Qualifier - Comtech EF Data MBT-5000A Installation And Operation Manual

7.2.2.4

Instruction Code

This is a three-character alphabetic sequence that identifies the message subject.
Wherever possible, the instruction codes have been chosen to have some significance – e.g., FRE for Operating FREquency, IPA for
Management IP Address, etc. This aids in the readability of the message, should it be displayed in its raw ASCII form.
Upper case and lower case alphabetic characters may be used ('A' to 'Z' and 'a' to 'z', ASCII codes 65-90 and 97-172).
7.2.2.5

Instruction Code Qualifier

This is a single character that further qualifies the preceding instruction code. Code Qualifiers obey the following rules:
From Controller-to-Target, the only permitted characters are:
Character
=
(ASCII code 61)
?
(ASCII code 63)
Serial-based Remote Product Management
Definition
This character is used as the Assignment Operator (AO). It establishes that the Instruction Code that precedes it is to be used as a
command to assign or configure operation. The instruction set that follows serves to assign the Target's new parameter setting or
operational value.
Example: From Controller-to-Target, MUT=1 means "enable the mute function."
This character is used as the Query Operator (QO). It establishes that the Instruction Code that precedes it is to be used as a query
that returns the Target's current configured parameter setting or operational value.
Example: From Controller-to-Target, MUT? means "what's the current state of the MUTE function?"
MBT-5000A L-Band Up/Down Converter System
7–6
Revision 1
MN-MBT-5000A