Viavi MTS 4000 Base Unit, User Manual

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Chapter 5 Power meter, VFL (Visual Fault Locator) and Talkset
Configuring the Power meter
68 User Manual 77000000206 Rev. 007
Configuring the
measurement
parameters of
the power
meter
The measurement parameters can be accessed with the
S
ETUP
key.
Wavelength Selecting wavelength:
- Auto: the wavelength of the input signal will be
automatically detected and selected to perform
the measurement:
850, 980, 1300, 1310, 1420, 1450, 1480, 1490,
1510, 1550 or 1625 nm: measurement performed
at specified wavelength.
- User: choice of wavelength on the next line
User choice (if the User option was selected in the Lambda
line) selection of the wavelength between 800
nm and 1650 nm, in 1 nm steps, by means of the
direction keys
and .
Beep on Modulation Select if a sound must be heard whea a
modulation occurs (Yes / No)
Unit Unit of power displayed:
- Watt, dBm for displaying absolute power
- dB for displaying a result relative to a reference
(link loss)
Reference level If dB units were chosen in the previous line,
selection of the reference value for the
wavelength selected. Using the direction keys,
first choose the wavelength, then press the > key
to access choice of the value (+XXX.XX), then
confirm this value with the
E
NTER
key.
This reference is also automatically available, in
the
Results page, using the Set as Reference
key.
Attenuator compensation
Choice of level to be applied to the wavelength
chosen for measurement to compensate for the
loss due to the external attenuator (+XX.XX dB).
First use the direction keys to choose the
Fig. 34 Configuration of power measurement