IMC Networks iMcV-DS3, Руководство по эксплуатации

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Transmit LIU Waveshape (Line Build-Out) (DIP Switch S1, Position 5)
This switch selects the optimal transmit waveshape for the line build-out distance on
the coax line. The transmit waveshape can be set for a distance of either 0 to 255
feet or over 255 feet. This feature corrects problems related to cabling (i.e., cross-
talk, electromagnetic interference, etc). Improperly setting this switch will cause
signal degradation.
By default this feature is set to 0 to 255 feet (450 ft maximum).
Transmit Coax Data Source (DIP Switch S1, Positions 6 & 7)
These switches select the transmit mode used by the iMcV-DS3/E3/STS-LineTerm
module. The transmit modes that can be selected include the following:
•
Standard data
•
Unframed All Ones (diagnostic)
•
Alternating Ones and Zeros (diagnostic)
•
Pseudorandom Bit Sequence (diagnostic 2
15
-1 PRBS Pattern)
These standard Telco transmission pattern modes are provided to help diagnose
transmission errors in the line.
By default this feature is set to STANDARD DATA .
This feature can be controlled by SNMP-management software (iView
2
) when the
HOST iMcV-DS3/E3/STS-LineTerm module is installed in a managed chassis.
DS3, E3/STS and STS Selection (DIP Switch S1, Position 8)
This switch selects the data rate to use on the coax line. The data rate selections
available include the following:
•
DS3 (44.736 Mbps +/- 20 ppm)
•
E3/STS (34.368 Mbps +/- 20 ppm)
•
STS (51.840 Mbps +/- 20 ppm)
By default this feature is set to DS3.
This feature can be selected only by setting the DIP Switches manually.
Remote Management (DIP Switch S1, Position 10)
This switch enables or disables the Remote Management mode. Enabling Remote
Management on the Remote module allows all SNMP configurable features for the
Remote modules to be configured from the Host module. By default this feature is