Displaying Absolute Power Level; Displaying Relative Power Level - JDS Uniphase cOPM-A1 Operating Manual

5 O
PERATION

Displaying absolute power level

The power level is displayed in dBm or Watts (nW, µW,
mW) in absolute power level display mode.
⇒ Press [dBm/W] to display absolute power level and to
toggle between dBm or Watts.
Fig. 7 Displaying absolute power level in dBm.

Displaying relative power level

The actual measured power level relative to a reference
value is displayed in relative power display mode. The
reference value can be set by defining the actual power
level as the reference value. This setting can then be
edited manually.
Setting the reference level
✓ The device is in absolute power level display mode.
1. Press and hold [dB REF] to set the reference level.
The actual power level is set as the new reference
level. The reference level is displayed in the top display
bar. Reference power level display mode is activated.
Note: The reference level must be stored for each
wavelength separately and is saved even when
the power is off.
Editing the reference level
The reference level can be also edited manually.
1. Select Edit Ref. Level in the MAIN menu.
26 cOPM-A1 JDSU