EXFO PM-1600 High-Speed Power Meter - Manual (Page 73)

Performing Typical Tests with Your PM-1600
High-Speed Power Meter 63
Using the External Trigger
3. Set the power meter channels to the proper manual range, making
sure that no saturation occurs on the active channel.
4. Select the highest Single sampling rate (4096 samples per second).
5. Set the acquisition to be externally triggered.
6. Set the optical switch to initial position.
7. Start the acquisition.
8. Activate the electrical control signal, which acts as a trigger for the
PM-1600. The PG marker, in measurement mode, will be displayed
until the switch transition is totally acquired.
9. Retrieve the data by remote control and determine the switch time
from the initial channel to the target channel.
10. Repeat steps 6 to 9 for each transition to be characterized.
This chapter describes how to use the external trigger and analog output of
the PM-1600 High-Speed Power Meter.
Both the external trigger and analog output are easily accessible from the
front panel of the power meter and use standard BNC connectors.
Using the External Trigger
The external trigger is used to synchronize or stimulate the acquisition of
power measurements with an electrical signal (TTL level). Acquisitions at
up to 4096 Hz can be performed. The use of an external trigger requires a
programmed acquisition and selection of a manual power range.
Performing Typical Tests with Your PM-1600
High-Speed Power Meter 63
Using the External Trigger
3. Set the power meter channels to the proper manual range, making
sure that no saturation occurs on the active channel.
4. Select the highest Single sampling rate (4096 samples per second).
5. Set the acquisition to be externally triggered.
6. Set the optical switch to initial position.
7. Start the acquisition.
8. Activate the electrical control signal, which acts as a trigger for the
PM-1600. The PG marker, in measurement mode, will be displayed
until the switch transition is totally acquired.
9. Retrieve the data by remote control and determine the switch time
from the initial channel to the target channel.
10. Repeat steps 6 to 9 for each transition to be characterized.
This chapter describes how to use the external trigger and analog output of
the PM-1600 High-Speed Power Meter.
Both the external trigger and analog output are easily accessible from the
front panel of the power meter and use standard BNC connectors.
Using the External Trigger
The external trigger is used to synchronize or stimulate the acquisition of
power measurements with an electrical signal (TTL level). Acquisitions at
up to 4096 Hz can be performed. The use of an external trigger requires a
programmed acquisition and selection of a manual power range.