JDS Uniphase ORL-55 Series Operating Manual page 38

5 O
PERATION
Display absolute level in Watt
 Highlight Watt and press [MENU ENTER].
Independent from the actually selected display mode
(relative or absolute), display will change to absolute
mode when selecting Watt. In the dB/dBm menu line
dBm will be shown.
 Highlight dBm and press [MENU ENTER] if you wish
to display absolute level in dBm.
Setting the reference value
The relative power display mode shows the actual
measured power level relatively to a reference value.
This reference value can be set by defining the actual
power level as reference value and can be edited
manually.
Setting the reference level
 The device is in absolute power level display mode.
1. Press [MENU ENTER] to open Main menu.
2. Select ABS  Ref and press [MENU ENTER] to store
reference level.
The actual power level is set as 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 will be saved during power
off.
Editingthe reference level
A reference level can be also edited manually.
1. Select Edit Ref. Level in the MAIN menu.
The measurement display opens, showing EDIT in the
top right corner:
34 ORL-55 JDSU