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CXR Larus 80-100-400 Issue 2 July 2006 page
3-47
selectable observation interval, from 1 to 100,000 seconds in decade steps.
3.3820 Reporting of Performance Data:
Data are accessed by local or remote terminals through the 54550 Information
Management Card in the following modes:
a. Synchronization Monitor card default (scan) mode:
Continuous scan of active DS1 inputs, accumulating measurements for
100 seconds for each input. Accumulated values are stored separately for
the 24 most recent one-hour intervals on a rotating basis (the last 24 hours
are stored at any point). Each complete rollover of 24 one-hour intervals is
summarized and stored in totals for each of the past seven days. Cyclic
redundancy checking (CRC) events are broken down into mildly errored
seconds (at least one but fewer than 320 CRC errors) and severely errored
seconds (more than 320 CRC errors). All the stored data can be retrieved
on command at any time.
b. Synchronization Monitor card manual mode:
Remote selection of the parameters to be measured, the inputs to be
scanned, the observation interval (1 to 100,000 seconds in decade steps),
and the number of consecutive intervals (iterations) to be observed on a
given input. Up to 64K iterations can be programmed. If the number of
iterations is set to -1, the data output will continue until stopped by the
operator. Data for the current interval are sent to the terminals at the end
of each iteration.
c. Phase
data:
Selection of one or two of five inputs, the observation interval (1 to 100,000
seconds in decade steps), and the number of consecutive observation
intervals to be measured on a given input. Consecutive intervals can be
selected, with 32 phase samples per interval.
d. RCV
Framers:
Two framers, one of which can be used in the scan mode while the other is
connected to another input.
3.3821 Alarm
Reporting:
a. Autonomous alarm reports will occur, via the 54550 card, when selected
thresholds are exceeded.
b. LED indicators, listed below, will illuminate for thresholds exceeded.
Threshold levels are defined in Section 4, Table 4-A.
3.3822 LED
Indicators:
Front Panel Label
LED Color
Indication
FAIL Red
Card
fail
LOS
Yellow
Loss of Signal
OOF/AIS
Yellow
Out of Frame/ Alarm Indication Signal
BPV
Yellow
Bipolar Violations Rate
