Viavi T-BERD 6000A V2, Руководство пользователя

Страница: 47 / 188

Chapter 5 Power meter, VFL (Visual Fault Locator) & Talkset
Using the Power meter
User Manual 76100000200 Rev. 001 27
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 Powermeter function is selected, the following softkeys are
available on the results page:
The different configuration buttons are displayed:
– Wavelength selection of the wavelength
– Unit choice of the unit
– Zero Adjustment of the Zero value when the power meter’s
optical input is closed with a plug (a validation is
required).
On the results page, the following actions are available:
Fig. 12 Results and commands of the power meter
Results
of the
power meter