HRS-HB-9
S
UPPORT
M
ODULE
H
ANDBOOK
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DOCX
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Serial Digital Modem, maintenance and fault finding guide
3.4.6
Refer to the following table that gives a list of commonly encountered problems and suggested solutions.
Fault
Possible Causes
Solution
Power LED does not illuminate.
Power is not connected to the PSU.
Module is not fully inserted.
Connect mains power to the rear of the PSU.
Check fuses of power leads.
Check module is properly aligned and handle
pawls are fully engaged.
Check there are no obstructions to the rear such
as optical cable protective covers.
Difficulty inserting module.
Incorrect alignment.
Incorrect module slot.
Check that the module is correctly fitted in card
guides.
Check that module is in correct slot.
Slots 1-13 for 5HP modules.
Alarm LED in ALARM state.
Laser degraded.
Low optical level at receiver.
Return to local
ViaLite Communications
office.
Check optical link for breaks / kinks.
Check all optical connectors are clean.
No light of alarm LED.
LED display mode set to data and no passing
signal.
Change to alarm mode, feed correct signal.
No data signal.
Incorrect connection.
Low RLL.
Low/no optical transmitter power.
Check pin-out and connection cable.
Check if alarm LED is red.
Check if alarm LED is red.
The
ViaLiteHD
range of modules is engineered and calibrated for optimum performance and accuracy before dispatch.
In the event of any problems or queries arising with the equipment, please contact
ViaLite Communications
or your local agent.
Gigabit Ethernet Fibre Optic Link
3.5
This section covers the following
ViaLiteHD
support module:
Gigabit Ethernet Fibre Optic Link (referred as GE FOL hereafter)
The
ViaLiteHD
GE FOL unit provides the interface between 1000BASE-T (1Gb Ethernet over copper twisted pair) and 1000BASE-X (1Gb
Ethernet over fibre).
The
ViaLiteHD
GE FOL offers the following key advantages:
Small 5HP form factor of plug-in type
Compatibility with
ViaLiteHD
chassis
In addition to the 5HP plug-in type, Yellow link and Blue Link are also available (see picture below)
The
ViaLiteHD
GE FOL options:
Wavelength: single mode 1310nm, 1550nm, CWDM, DWDM
Range: 10km, 40km and 70km SM
Plug-in, Yellow link and Blue Link
