SHDFTRX
OPERATION
SHDFTRX
Version 1 Issue 5
180203
16
Rollcall Monitoring Features
Module Infrastructure:
General Alarm
Supply Voltage Levels
Board Temperature
Incoming Signal analysis:
Input Status
Line Standard
Frame Type
Frame Rate
CRC Error analysis:
CRC Error Count
CRC Error Total
CRC Reset
Bias/EQ – The value in this field is a guide to
the strength of equalisation that is being
applied to the input signal for longer cable
runs. The lower the value, the less equalisation
is being employed. It is intended as a guide for
troubleshooting the system. It should be noted
that when an equalisation of 100% is shown, it
doesn’t necessarily mean that the maximum
input cable length has been reached. As soon
as CRC errors are being reported then the
input cable length should be decreased until an
error free signal can be received.
Laser Case Temperature / Bias (Degrees
°
C) –
The case temperature is an indication of how
much Laser Drive Strength is being applied i.e.
Laser Bias current. As the laser becomes
older, the drive strength will be increased
which will therefore cause its case temperature
to rise.
Received Laser Power (dBm) – This is the amount
of Laser power being received. It indicates how
much attenuation has been applied to the signal.
