Terrasat IBUC 3, Operation Manual

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C
H A P T E R
6
C
HAPTER
6
T
ROUBLESHOOTING
This chapter discusses basic troubleshooting procedures for the Terrasat
Communications, Inc. line of intelligent block upconverters (IBUC
3
and IBUC
3
G
)
and outdoor units (ODUs).
Maintenance
In general, Terrasat power supply units (PSUIs) and ODUs are self-contained and
require little maintenance. However, for optimum performance, Terrasat recommends
that users inspect the mechanics of the system quarterly and perform the following:
• Clean the antenna feeds to keep them clear of obstructions.
• Check cables and connectors for signs of wear, damage, or loose connections.
• Check all fan intakes and exhausts to ensure that they are clear of debris. The user
can use a water hose for this purpose while the unit is off .
Transceiver Fault Isolation
Use the information in this section to assist in determining whether a Terrasat unit is
faulty. The intent is to determine a “Go” or “No Go” situation based on alarms
indicated through the M&C ports, as well as by measuring certain signals using test
equipment.
Site-Related Problems
VSAT antennas are often fitted at the top of buildings. Avoid close proximity to
elevator motors, and such. Ensure that the satellite signal path is free and clear of
obstructions.
M&C Checks
When troubleshooting the IBUC, the first level of troubleshooting should be to check
the status through the M&C port. Events and an event history log are available with