Viavi MTS 4000 Base Unit, User Manual

Page: 92 / 254

Chapter 5 Power meter, VFL (Visual Fault Locator) and Talkset
Display of results and commands
70 User Manual 77000000206 Rev. 007
Table of results
For one and the same fiber, the power meter displays a table of 9 results
corresponding to the different possible wavelengths. The first 4 results
are displayed on the screen; to scroll through the other results, use the
direction key
. The table shows the power measured in dBm, the rela-
tive power (in dB) and the reference level in dBm (if units = dB), together
with the mode.
– A measurement result is displayed in the table when the Keep
Result softkey is pressed.
– The Clear Table softkey orders deletion of all the results displayed
in the table.
– If the Alarm function has been activated, any result that exceeds the
selected thresholds appears in red in the table. Otherwise, results
are shown in the table in green.
– When the instrument is switched off, results present in the table are
saved.
Commands of
the power
meter
parameters
When the LTS function is selected, the following softkeys are available
on the results page:
Keep Result Saves the result on the corresponding line of the
table.
Clear Table Deletes all the results recorded in the table.
Pressing the Powermeter Config. key allows to reach the following
function:
Wavelength Allows to modify the wavelength to be applied
with the Power meter.
Fig. 35 Results and commands of the power meter
Results
of the
power meter