Cisco GoQAM Installation And Operation Manual page 153

Modulator rf output and if output hardware
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LCD
Description
Input (1-4)
PMT Update
OUT (1-2)
FIFO overflow
4004834 Rev D
Alarm
Probable Cause
Level
Status
The PMT seen at one of the inputs
or
(1-4) on the GoQAM yields a version
Minor
number change indicating that the input
stream has changed.
Minor A FIFO overflow occurred and packet
data has been lost indicating one or more
of the following conditions:
Too many sessions defined from the
DNCS for the GoQAM
The data rate as defined from the
DNCS for the GoQAM session is too
low, which also means that the data
rate of the ASI input to the GoQAM is
too high
Hardware problem
Incorrect modulation mode
Troubleshooting Alarm Messages
Check and Correct
If the GoQAM handles
the PMT, the alarm is
for information only
(Status) and will clear.
No user action
required.
If the GoQAM does
not handle the PMT
update, the alarm is
sent as a Minor alarm,
and does not clear. Yo
may need to reboot the
GoQAM to re-acquire
the input stream.
Reduce the data rate of
input to the GoQAM
by doing one of the
following:
– Reducing the
amount of
incoming data
– Reducing the
amount of data
added to the
stream
– Increasing the
GoQAM
modulator mode
137

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