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Chapter 3
Getting Started
Configuring Expert Optical settings
T-BERD/MTS/SC Getting Started Guide
Page 80
22046537, Rev. 016
March 2018
To connect your instrument to the circuit
1
If you are testing on an optical circuit, insert a Viavi recommended optical
connector, transceiver and/or adapter into the supporting port on the instrument’s
connector panel (see
“Viavi recommended optical adapters and transceivers” on
2
Using the blinking yellow LEDs and labels on the connector panel as a guide,
connect one end of the selected cable to the appropriate transceiver or jack on
your instrument, and then connect the other end to the device on the circuit. If you
are connecting to an optical circuit,
be certain to attenuate the signal
.
NOTE: If your test instrument is configured with dual ports, flashing LEDs indicate
which connectors are used for the
currently selected test
; solid LEDs indicate the
connectors used for other tests.
3
If you connected to an optical circuit, determine whether you can remove the
attenuator by observing the
Optical Rx Level (dBm)
result in the Interface
group, Signal category. If attenuation is not necessary, remove the attenuator,
reconnect the cable to the transceiver, and then press
Restart
.
The instrument is connected to the circuit.
Configuring Expert Optical settings
The optics used in the CSAM ideally auto-configure upon insertion and therefore
require no user intervention.
For applications where configuration of the optics is critical, an Expert configuration is
provided. This function provides adjustments for the optics to compensate for equip-
ment variations and transmission conditions.
To configure expert settings
1
On the Main screen, select the
Setup
soft key. A series of setup tabs appear.
2
On the
Interface
tab, select the
Connector
tab.
3
Select the
QSFP Expert
or
CFP Expert
tab.
4
Click the box to
Enable Expert Mode
.
The expert mode parameters are automatically set, and are only applicable to the
CFP or QSFP modules. Therefore, the settings only appear if a valid (non-loop-
back) CFP transceiver, CFP Adapter, or QSFP+ transceiver is inserted in the
corresponding port.
5
If you are testing using unreleased pluggable options (e.g., optics that are still
under development), use
Ignore LOS
if you receive LOS errors.
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