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Signal Generation – The SOURce Subsystem Measurement Operations & Settings
Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Fifth Edition 139
command:
[:SOURce[n]][:CHANnel[m]]:WAVelength:SWEep:FLAG?
syntax: [:SOURce[n]][:CHANnel[m]]:WAVelength:SWEep:FLAG?
description: The sweep flag is used to find out when logging data is available and when the next sweep
cycle may be triggered.
It may also be used as a sweep cycle counter, where: flag/2 = number of sweep cycles
The flag is:
- only used in continuous sweep
- set to 0 at start/end of sweep
- incremented when the sweep is waiting for a trigger
- incremented when logging data is available
- an odd number when, waiting for a trigger
- an even number when, logging data may be read
If the trigger input isn’t configured to start a sweep cycle the flag is increased by two when
the logging data is available
If no logging data is calculated, because the user doesn’t want lambda logging, the flag is in-
cremented at the end of the sweep cycle regardless
Sweep state
Flag
start
0
sweep waiting for trigger
1
trigger →
first cycle | start moving back | do some post
processing | logging data available
2
sweep waiting for next trigger
3
.....
sweep stopped or finished
0
parameters: none
response: the current sweep flag value as an unsigned integer value
example: sour0:wav:swe:flag? → 30
affects: All tunable laser modules except Agilent 81649A and Agilent 81689A/B