44
OLT-85/OLT-85P
7 P
OWERMETER
O
PERATION
G
ENERAL
INFORMATION
7
P
OWERMETER
O
PERATION
General information
This chapter describes how to use the OLT-85/OLT-85P as a
power meter. In Powermeter mode up to two wavelengths can
measured simultaneously. Results can be displayed as absolute
level in dBm/Watt, relatively to a reference value in dB or as Pass/
Fail indication based on predefined limits.
More information about measuring loss with two instruments
set to source and powermeter mode can be found in the chapter
“Powermeter Operation” on page 44.
Setting and selecting wavelengths
The OLT-85/OLT-85P provides several ways to select a
wavelength:
• Auto
mode: When using an Auto
capable laser source (like
the OLS-85), wavelengths can automatically be detect.
• By tapping the wavelength displayed in the measurement
display until the desired wavelength is shown. The wavelengths
offered in the table can be defined in the
[
Edit
Table
]
menu.
• By selecting a wavelength from the
table in the menu. The
wavelengths listed in this table are not affected by the
Show
settings in the
[
Edit
Table
]
menu.
Fig. 16 Measurement display (screen shows actual power level (upper),
selected wavelength (lower left) and modulation frequency
(lower right)
