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Chapter 1 199
GPIB Command Dictionary
DECoder subsystem
:AMPS|TACS:GATE <real number>
:AMPS|TACS:GATE?
This command specifies how long the decoder analyzes a signal after it
has been triggered. Up to 6.55 seconds of gate time can be specified. The
minimum gate time must be long enough to allow the preamble and all
necessary data bits to be captured.
If the gate time is too long, the decoder’s buffer becomes full. A message
is displayed instructing you to decrease the gate time.
This command utilizes the “Real Number Setting Syntax” on page 299,
but does not use the :STATe command.
Syntax
DEC:AMPS:GATE <real number>
DEC:AMPS:GATE?
Screen/field equivalent
DEC:AMPS:GATE controls the Gate Time field on the SIGNALING
DECODER screen when the Mode field is set to AMPS-TACS.
:AMPS|TACS:MESSage <string>
:AMPS|TACS:MESSage?
These commands set/query which of the message streams (entered in
the encoder’s message fields) will be decoded.
Syntax
DEC:AMPS:MESS ‘FOCC A&B’
‘FOCC A’
‘FOCC B’
‘RECC’
‘FVC’
‘RVC’
DEC:AMPS:MESS?
Screen/field equivalent
DEC:AMPS:MESS has no equivalent screen control field.