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CXR Larus 80-100-400 Issue 2 July 2006 page
3-64
a. 64/8 kHz 5/8 (62.5 ±5%) duty cycle.
b. Bipolar pulse violation every eight pulses.
c. Waveshape which meets GR-378-CORE for T1 and ITU-T G.703 for E1.
Pulse width 9.765 microseconds ±5%, pulse interval 15.625
microseconds ±5%, overshoot
≤
10% of peak to base amplitude.
d. Outputs byte synchronized.
e. Rise time <500 nanoseconds.
f. The leftmost output card produces frame synchronization for the rest of
the output cards; plugging in an output card does not cause an error on
another card's output. If a Composite Clock input card is present, then its
frame synchronization will maintain the leftmost output card setting the
correct frame synchronization for all other output cards.
g. There is a small jumper behind the faceplate that selects Protected or
Non-Protected operation with a matching output card.
3.4313
Output Load Impedance:
135 ohms ±5%, resistive
3.4314
Output Pulse Amplitude:
4.0 volts ±1.0 volt base to peak. Maximum jitter <0.03 UI peak to peak,
measured within the frequency range of 20 Hz to 20 kHz.
3.4315
Rearrangement Phase Transient during Switching of Input Signals:
MTIE 324 nanoseconds maximum; phase change rate less than 20 ns in any
14 milliseconds. Long-term maximum phase discontinuity (wander) on a
separate output module will not exceed a magnitude of 35 ns for any
observation interval.
3.4316
Number of Outputs:
Ten per card; monitor jack (-20 dB) for output #1
3.4317
Output Connectors (on backplane):
Wirewrap, for up to 22 AWG shielded pair
3.4318 Drive:
Each output capable of driving up to 1500 feet of 22 AWG office cable
3.4319 Outputs:
a. Alarm line to 54560 Alarm Interface Card signals loss of one or more
outputs.
b. One-wire interface to 54550 Information Management Card reports
personality and LED and output status and can disable the capacity of
any specific output to generate an alarm.
c. If one or more outputs fail to meet the output pulse amplitude level, an
output failure is reported to the 54560. The number of output failures is