Cisco Model D-PCG1000 PowerKEY CAS Gateway Maintenance Manual
Chapter 6 Troubleshoot Front Panel Alarms
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4019476 Rev C
GoQAM, GQAM, and MQAM Modulator Front Panel
LCD Alarm Messages
This section applies only to GoQAMs, GQAMs, and MQAMs. For QAMs go to QAM
Modulator Front Panel LCD Alarm Messages (on page 53).
The following tables list alarm messages displayed on the front panel LCD, the
The following tables list alarm messages displayed on the front panel LCD, the
default level of severity, probable causes for the alarm, and suggestions for
correcting the alarm condition. The probable causes and check and correct
procedures are arranged in order from the least to the most complicated.
Using the Alarm Troubleshooting Tables
The alarm types and LCD displays for each alarm are arranged in alphabetical
order.
Alarm messages that occur for the multiple RF outputs or the multiple ASI input
ports are listed only once. The numbers in parentheses indicate the range of port
numbers that might be affected by the alarm.
Example: The “Input (1-5) errored MPEG packet” description corresponds to the
Example: The “Input (1-5) errored MPEG packet” description corresponds to the
input port that is affected.
ASI Alarms (MQAM only)
LCD Display
Severity Probable Cause
Check and Correct
ASI (1-2)
errored
MPEG
packets
errored
MPEG
packets
(MQAM only)
Minor
An error occurred in the header
of MPEG packets as they arrived
at the indicated Input port
of MPEG packets as they arrived
at the indicated Input port
Contact Cisco Services
ASI (1-2)
FIFO overflow
FIFO overflow
(MQAM only)
See also
ASI (1-2)
packets were
dumped
ASI (1-2)
packets were
dumped
Minor
A first-in first-out (FIFO) overflow
occurred and packet data has
been lost. This indicates one or
more of the following conditions:
occurred and packet data has
been lost. This indicates one or
more of the following conditions:
Too many sessions defined
from the DNCS for the
MQAM
from the DNCS for the
MQAM
The data rate as defined
from the DNCS for the
MQAM session is too low,
which also means that the
data rate of the ASI input to
the MQAM is too high
from the DNCS for the
MQAM session is too low,
which also means that the
data rate of the ASI input to
the MQAM is too high
Hardware problem
Incorrect modulation mode
1
Reduce the data rate of input
to the MQAM by doing the
following:
• Reducing the amount of
to the MQAM by doing the
following:
• Reducing the amount of
incoming data
• Reducing the amount of
data added to the stream
• Increasing the MQAM
modulation mode
2
Verify and correct session
rate targets and threshold
values
rate targets and threshold
values
3
Contact Cisco Services