EXFO PM-1600 High-Speed Power Meter - Manual (Page 45)

Acquiring Power Measurements
High-Speed Power Meter 35
Setting Sampling Rate
Setting Sampling Rate
This function allows you to define the number of power readings per
second in power measurement mode (for both channels in a PM-1620
dual-channel power meter) with a maximum of 256 per second.
In power measurement mode, power measurements are constantly
updated on the measurement display. Samples can also be retrieved with
the GPIB or RS-232 interface (refer to the IQ-200 GPIB and Application
Development Guide).
According to your specific requirements and the power level, you will
select a sampling rate that will optimize instrument flexibility and
measurement stability as well as determine the quantity of data generated
during data acquisition.
Note: Use a lower sampling rate with averaging active (see Displaying Averaged
Measurement on page 22) for greater repeatability when measuring very
low power.
To set the sampling rate,
1. Press Setup to access the Setup menu.
2. Press ENTER to access the System Setup menu. The current sampling
rate is displayed.
3. Press ENTER to access the sampling rate edit box.
4. Use the up/down arrow keys to select the rate from the 11 values listed.
Values vary from 1/4 Hz to 256 Hz.
5. Press ENTER to confirm the new sampling rate. If using a PM-1620
dual-channel power meter, the sampling rate applies to both channels.
Note: The sampling rate defined in the Setup menu is independent of the
sampling rate defined in the Program menu.
Acquiring Power Measurements
High-Speed Power Meter 35
Setting Sampling Rate
Setting Sampling Rate
This function allows you to define the number of power readings per
second in power measurement mode (for both channels in a PM-1620
dual-channel power meter) with a maximum of 256 per second.
In power measurement mode, power measurements are constantly
updated on the measurement display. Samples can also be retrieved with
the GPIB or RS-232 interface (refer to the IQ-200 GPIB and Application
Development Guide).
According to your specific requirements and the power level, you will
select a sampling rate that will optimize instrument flexibility and
measurement stability as well as determine the quantity of data generated
during data acquisition.
Note: Use a lower sampling rate with averaging active (see Displaying Averaged
Measurement on page 22) for greater repeatability when measuring very
low power.
To set the sampling rate,
1. Press Setup to access the Setup menu.
2. Press ENTER to access the System Setup menu. The current sampling
rate is displayed.
3. Press ENTER to access the sampling rate edit box.
4. Use the up/down arrow keys to select the rate from the 11 values listed.
Values vary from 1/4 Hz to 256 Hz.
5. Press ENTER to confirm the new sampling rate. If using a PM-1620
dual-channel power meter, the sampling rate applies to both channels.
Note: The sampling rate defined in the Setup menu is independent of the
sampling rate defined in the Program menu.