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DS1 I/O Rear Module
Plexus 9000 Planning and Engineering Guide
Issue 3, April 23, 2004
Section 130-120-450
5-130
Telica,
Inc
,
Table 5.10-B. DS1 Specifications
Nominal line
1.544 Mb/s ± 130 ppm
AIS line rate
1.544 Mb/s ± 32 ppm
Line code
Half width bipolar AMI or B8ZS (channel
selectable)
Line format
Selectable ESF/SF per channel
Termination
One balanced twisted pair shall be used for each
direction of transmission.
Impedance
100 ohms ± 5% (balanced)
Pulse shape
Meets TR-TSY-000499 mask with amplitude of
between 2.4 and 3.6 volts.
Note:
When measuring the pulse mask, a 100-ohms
T1 patch cable is required.
Power level
For an all-ones pattern, the power in a band no wider
than 3 kHz:
•
Centered at 772 kHz is between 12.6 and 17.9
dBm.
•
Centered at 1544 kHz is at least 29 dB below
the power level at 772 kHz.
Pulse imbalance
Less than 0.5 db difference between total power of
positive and negative pulses
Jitter generation
Less than 0.3 timeslots RMS
Maximum span
655 feet to cross connect using 22 AWG cable
400 feet to cross connect using 24 AWG cable
60