Giga-tronics 8650B Series, Руководство по эксплуатации

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Series 8650B Universal Power Meters
2-12 Publication 31470-001, Rev C, November 2, 2017
1.) Press
[Ext Trigger Rising]
or
[Ext Trigger Falling]
to set the parameters of the external trigger.
The settings are:

Delay

Gate Time

Holdoff
Upon entering the External Trigger setup, a burst profile will display at the bottom of the screen.
If the following specifications are not met, the profile may be inaccurate or not displayed at all:
a.) The time from between trigger edges is the period of the trigger. The period must be equal
to or less than 50 ms.
b.) The burst must be at least 0.1 ms wide and have at least 0.1 ms off time.
c.) The trigger edge must occur before the leading edge of the burst.
d.) The points on the profile represent a resolution in time, which will vary according to the
requirement that the burst fit on the screen, to a minimum of approximately 10 µs per
displayed point.
2.) Select
[Delay]
and set its value with the cursor keys . The range is 0 µs to 100 ms.
3.) Select [Gate Time] and set its value with the cursor keys. The range is 5 µs to 100 ms.
4.) Select [Holdoff] and set its value with the cursor keys. The range is 0 µs to 100 ms.
5.) Press [OK] to accept the changes or [Cancel] to cancel the changes and return to the Power
Meter Configuration menu.
c. Burst Edge
The Burst Edge mode uses the burst edges detected by the sensor to trigger power measurements,
and is configured essentially the same as External Triggering described above with the exception of
the Holdoff parameter. The setup screen for this mode also displays a burst graphic profile with the
same conditions as described for External Triggering.
1.)
Set the Delay and Gate Time as described for External Trigger in steps b-2.) and b-3.) above.
2.) Press [OK] to accept the changes or [Cancel] to cancel the changes, and return to the Power
Meter Configuration menu.
Figure 2-7: Burst Edge Configuration Illustration