Viavi T-BERD MTS 5800 Getting Started Manual page 106

Chapter 3 Getting Started
Configuring Expert Optical settings
e
f
8 If you enabled CFP Expert mode in Step 4, adjust the Receive (Rx) settings as
applicable:
a
Setting
Default
Low
Nominal
High
b
c
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This inverts the polarity of the data from the FPGA transceiver to the CFP.
This is a special case feature that may be necessary for use with electrical-
breakout or other evaluation CFPs.
Specify whether to reset the FIFO on the transmit path (Reset Tx FIFO) of
the CFP.
This button appears only if the CFP has indicated that is supports FIFO
manual reset.Errors may be recorded after a FIFO reset. To clear the errors,
restart the test after resetting the FIFO.
If the unit is looped back to itself, reset the Tx FIFO before resetting the Rx
FIFO.
If you are using an OpNext 100G LR4 CFP, specify whether to automatically
reset the FIFO any time it has regained synchronization (lock) after having
lost it.
This is specific to the OpNext 100G LR4 CFP. Per the manufacturer's recom-
mendation, the 40G/100G Transport Module can execute software-monitored
and assisted resets of the transmit and receive FIFO.
This automatic FIFO-resetting mechanism will be gated (blocked) if
- SONET/SDH service disruption is enabled
- OTN service disruption is enabled
- Ethernet SD has decoupled TX from RX
The manual FIFO reset (specified in
will not be blocked or gated.
Specify the Equalization setting.
Description
Original manufacturer settings.
Minimal equalization is applied. This is the ideal setting for most
CFPs.
A moderate level of equalization is applied.
A high level of equalization is applied.
The default Equalization settings are set to values which are recommended
to work with all optics on the Recommended Optics List.
Specify whether to activate Invert Polarity.
This inverts the polarity of the data from the CFP to the FPGA transceiver.
This is a special case feature that may be necessary for use with electrical-
breakout or other evaluation CFPs.
Specify whether to reset the FIFO on the receive path (Reset Rx FIFO) of the
CFP.
These buttons appear only if the CFP has indicated that is supports FIFO
manual reset.Errors may be recorded after a FIFO reset. To clear the errors,
restart the test after resetting the FIFO.
T-BERD/MTS/SC Getting Started Guide
22046537, Rev. 016
step e) on the expert configuration page
March 2018