Viavi SmartClass OLP-85 Series, Руководство по эксплуатации

Страница: 41 / 84

OLP-85/OLP-85P 41
S
ETTING AND SELECTING WAVELENGTHS
6 P
OWERMETER
O
PERATION
Enabling Auto-  mode
Auto

is a special feature developed by Viavi that allows you to
identify wavelengths automatically (from OLS-XX, MTS-2k/4k/6k
OTDR CW-source). To do this, the signal is modulated at a
certain frequency (by a light source equipped with Auto  , such
as a Viavi OLS-85), which can be detected by a Viavi OLP-85.
In Auto  mode the detected wavelength will be included in the

table. As long as the detected wavelength is active, it cannot be
deleted from the  table.
Wavelengths cannot be reliably detected if:
• the receive level is too low,
• wavelength encoding cannot be detected due to interference
• you are measuring the absolute level of a system that does not
have wavelength encoding matching Viavi power sources.
To switch Auto

mode on/off:
I
The instrument is in Powermeter mode.
1. Press the
[
A
]
key and tap the [ More ] button.
The menu opens:
2. Tap the [ Auto
 
button to switch Auto

mode on/off.
The checkmark is set or removed.
Displaying modulated signals
The OLP-85/OLP-85P automatically detects the modulation
frequency of light signals modulated at the fixed frequencies of
270 Hz, 1 kHz, and 2 kHz. The detected frequency is shown in
the lower right measurement display pane.