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Plexus 9000 Planning and Engineering Guide
Octal DS3/STS-1 I/O Front Module
Section 130-120-600
Issue 4, March 26, 2004
Telica, Inc.
5-157
5.13.4 Specifications
Refer to
for the environmental specifications.
lists the DS-3 specifications and
lists the STS-1
specifications.
Table 5.13-B. DS-3 Specifications
Specification Description
Nominal line
44.736 Mb/s ± 20 ppm
Line code
B3ZS (Bipolar with three-zero substitution)
Framing
M-Frame (M13) or C-Bit parity mode
Termination
One coaxial line for each direction of transmission
Impedance
75 ohms ± 5% (unbalanced)
Pulse shape
Meets TR-TSY-000499 mask with amplitude of
between 0.36 and 0.85 volts peak.
Pulse imbalance
Less than 3.5 dB difference between total power of
positive and negative pulses
Jitter generation
Less than 0.3 timeslots RMS
Cable
728 RG-6U or equivalent
Maximum span
450 feet to DSX-3 cross connect
69
Table 5.13-C. STS-1 Specifications
Specification Description
Line rate
51.84 Mb/s ± 20 ppm
Line code
B3ZS (Bipolar with three-zero substitution)
Framing
M-Frame (M13) or C-Bit parity mode
Termination
One coaxial line for each direction of transmission
Impedance
75 ohms ± 5% (unbalanced)
Pulse shape
Meets TR-TSY-000499 mask with amplitude of
between 0.36 and 0.85 volts peak.
Pulse imbalance
Less than 3.5 dB difference between total power of
positive and negative pulses
Jitter generation
Less than 0.3 timeslots RMS
Cable
728 RG-6U or equivalent
Maximum span
450 feet to cross connect
T76-A