Instruction manual

7
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.