Performing A Measurement; Power Measurement; Optical Link Loss - Viavi SmartOTDR 100 User Manual

Chapter 5 Power meter & VFL (Visual Fault Locator)
Using the Power meter via USB port
Performing a
measurement
Power
measurement
Optical link loss Setting the zero value of the power meter
34
On the results page, the following actions are available:
Standard Reference
Selects the current result as reference value to
measure the attenuation of a link. This reference is
displayed under the measurement result until a new
reference value is chosen.
Keep Result Saves the result on the corresponding line of the
table.
Clear Table Deletes all the results recorded in the table.
If the Source function is selected (either on this Platform, on the base
Unit or on an OTDR module, or on another Platform), the Power meter
results page is different:
– The Wavelength, Unit and Zero menu keys are accessible via the
menu key Power Config..
– The Power Ref. menu key allows to reach the Standard Ref menu
key. It also allows to reach the Jumper Ref menu key if Power
meter function is associated with Source function onto another unit
(see OTDR Module User Manual).
The power meter is started up as soon as the function
H
in the page.
OME
Power measurement is automatically updated in consequence. The
value «<-60 dB» is displayed when the laser is switched off and if the
source output is looped on to the power meter input.
1 Connect the light source to be tested to the rear connector (see
"Connection to the power meter and VFL" page
S
2 In the menu, choose the units dBm, dB or Watts.
ETUP
S
3 Press the
TART
The result will appear in the results page and can be memorized in
the table (see "Table of results" page
S
4 Press the
TART
It is important to set the zero of the power meter before making any
measurements where accuracy is required, as the noise from the ger-
manium photodiode fluctuates over time and with variations in tem-
perature.
User Manual 7SMART102 Rev002
/S
key to start the measurement
TOP
/S
key to stop the measurement.
TOP
is activated
24).
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33).