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Item
Data rates
Communication line
Line impedance
Network port physical interface
Network port physical interface
Network transmitter
Frequency
Pulse amplitude — with surge
protection
Unbalance in height of
adjacent negative and positive
pulses
Width of output pulse (half
amplitude)
Unbalance in width of positive
and negative pulses
Time between two consecutive
pulses of opposite polarity
Maximum rise or falling time
Overshoot at trailing edge of
pulse
Line Build-Out
GDC 048R154-000
Technical Characteristics
Characteristic
Electrical (Continued)
N x 64 kbps or N x 56 kbps
(N = 1 to 24); maximum aggregate
(payload) rate of 1,536,000 bps
(1,544,000 bps in unframed mode)
T1 digital carrier (non-loaded, stag-
gered-twist ABAM, PIC, or pulp-insu-
lated exchange-type cable, 19 to 26
gauge)
100Ω
RJ48C modular jack
RJ48C modular jack
1,544,000 bps ± 50 bps
2.40 to 3.60 V at 60°F — may vary
over a cycle of 60 Hz current.
200 mV (maximum)
324 nsec ± 45 nsec
20 nsec (maximum)
648 nsec ± 15 nsec (measured at half
amplitude point of leading edges)
100 nsec
10% to 30% of pulse amplitude
0, 7.5, 15, or 22.5 dB (selectable or au-
tomatic) at 772 kHz
(Continued on next page)
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