Agilent Technologies 86038B, User Manual

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Agilent 86038B Photonic Dispersion and Loss Analyzer, Second Edition
Triggering Measurements and Delay Between Measurements
Once the connection is established to the instrument and the
measurements started, a timer called
MeasTimer
on the form is
used to delay between measurements. Because the
MeasTimer
can only delay about one minute, and since we need to update
the progress bar, the
MeasTimer
only delays about 150 ms at a
time. It wakes up, updates the progress bar, then goes back to
sleep.
The main routines involved are:
• MeasTimer_Timer() – wakes up every 150 ms, updates
progress bar, decides if it is time to take data.
• startMeasurement() – triggers the PDLA to make the
measurement. The TriggerProgress event communicates
when the sweep is finished and provides a chance to process
the measured data.
Key variables:
• groupIdx – Current group, starting with 1
• measIDx – Current measurement, starting with 1
• numGroups – Number of user requested groups
• numMeas – Number of user requested measurements per
group
• delayPerGroup – User requested delay per group
• delayPerMeas – User requested delay between each
measurement
• nextDelay – Remaining time left before next measurement
• requestedDelay – Either the delayPerMeas (if between
measurements) or the delayPerGroup (if between groups)
• TimerMax – How long to wait between progress bar updates.