EXFO FPM-600 Power Meter - Manual (Page 36)

Measuring Power or Loss (FPM-600 and FOT-600)
30 FPM/FLS/FOT-600
Activating Hold Min/Max Power Mode
Activating Hold Min/Max Power Mode
With the Hold Min/Max mode you can record
extreme values of a varying power signal. You
could use it to test the stability of a light source
over time.
In this mode, the unit displays the minimum or
maximum power value read up to now. It
continuously updates the display if a new min/max is measured.
To activate the Hold Min or Hold Max mode:
Press
to switch between Hold Max, Hold Min and regular power
measurement.
To reset the maximum or minimum value:
Hold down
for a few seconds. The unit displays “_ _ _ _”.