Symmetricom SDU-2000, User Manual

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12713020-002-2 Revision D – April 2004 SSU-2000 User’s Guide 153
Input Module Reference Data
1-Port and 3-Port DS1 Input Modules
1-Port and 3-Port DS1 Input Modules
This section describes the 1-Port (part number 23413013-001-0) and 3-Port (part
number 23413013-002-0) DS1 Input modules that may be installed in an
SSU-2000.
The 1-Port and 3-Port DS1 Input modules receive signals and perform phase
measurement comparisons with the Clock modules that are installed in the
SSU-2000. The Clock modules use this information to phase and frequency lock to
the incoming signal. The data may also be used for monitoring the frequency of
incoming signals.
The input ports accept one (1-Port Input modules), or three (3-Port Input modules)
of the following signals: sine or square wave, with frequency of 1, 1.544, 2.048, 5 or
10 MHz, or framed communication type DS1. If the input signal is a communications
type, the module monitors for Alarm Indication Signaling (AIS), Bipolar Violations
(BPVs), Loss of Signal (LOS) and Out Of Frame (OOF) errors. In addition, the
module extracts Synchronization Status Messages (SSMs) from the incoming data.
MTIE T10000 Limit 1 1100/2835/1100 0 to 100000
MTIE T10000 Limit 2 1110/2840/1110 0 to 100000
MTIE Limit 1 Alarm Mode Minor Ignore, Report, Minor, Major, or
Critical
MTIE Limit 2 Alarm Mode Major Ignore, Report, Minor, Major, or
Critical
Alarm Initial Severity Minor (except LOS and level
2 MTIE, which are Major) Ignore, Report, Minor, Major, or
Critical
Alarm Initial Delay 0 seconds 0 to 86400 seconds
Alarm Elevation Time 86400 seconds 0 to 500000 seconds
Port Status Disabled Enabled/Disabled
Port Name Any user-selected string from 0 to
20 characters
Table 7-4. E1 Input Module Configuration (Continued)
Configuration Setting Factory Default Range