MOGlabs FSW4, Manual, Page: 56 / 72

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Appendix C. Command language
[8
,
126]. Increasing the gain allows the exposure time to be reduced
for the same optical power, enabling an increased measurement rate.
The effective increase in measured counts is this value divided by 8.
Also reports a value for digital gain which is not used in any way.
C.5 Optical switch
SET
OPTSW,SET[,port]
Query or set the optical fibre input port. For example,
OPTSW,set,3
to select port 3. If auto-stepping, the selected port (see next) is not
changed.
AUTO
OPTSW,AUTOstep[,dwell]
Enable or disable auto-stepping, and query or set the auto-step
time. If
dwell
is given and non-zero, the FZW and FSW will automat-
ically sequence through the fibre input ports. If
dwell
is not given,
returns the current dwell time. Use zero for
dwell
to disable auto-
stepping. The
dwell
time must be greater than the optical switching
time (see
LAG
below).
LAG
OPTSW,LAG[,lag]
Query or set the switching time; that is, the time to wait after switch-
ing, before measuring wavelengths. The time is typically 8 to 10 ms,
which includes the optical module switching time of 5 ms and time
to communicate to the module. The maximum
lag
is 200 ms.
SKIP
OPTSW,SKIP,port[,val]
Query or set whether the port should be skipped when auto-stepping.
val
should be
0
or
off
to disable the specified port.
LAG
OPTSW,LAG[,lag]
SELECT
OPTSW,SELect[,port]
Query or set the port selected for reporting or setting port-related
parameters such as measured wavelength, saturation, contrast, and
etalon lineouts. When auto-stepping, the port will automatically