150-357-200-02, Issue 2
Appendix A - HXU-357 Specifications
HXU-357 List 1
February 9, 1999
55
A
PPENDIX
A - HXU-357
S
PECIFICATIONS
DS3 Interface (Multiplexer)
Cable
728A RG-6/U
Number of duplex lines
1 per chassis
Line rate
44.736 megabits/s ±20 ppm
Line code
B8ZS
Line impedance
75
Ω
±5
Ω
, unbalanced
Pulse amplitude
0.36V to 0.85V (meets TR-TSY-000499
requirements)
Jitter generation
≤
0.3 UI rms
DS3 span buildout
0 to 450 ft. (0 to 137.2m)
DS1 Internal Interface to Backplane
Number of lines
28
Line rate
1.544 megabits/s ±130 ppm
Line code
AMI/B8ZS selectable (per channel)
Line impedance
100
Ω
±5%, balanced
Pulse amplitude
3.0V ±0.6V
Jitter generation
<0.3 UI rms (1 UI = 648 ns)
DS1 span
1 to 655 ft. (.3 to 199.6m)
Cable
ABAM or equivalent
Power Requirements
Voltage
-41.5 to -56.3 Vdc
Power consumption
26W typical
Physical Dimensions
Length
9.81 in. (24.9 cm)
Width
7.72 in. (19.6 cm)
Height
.98 in. (2.5 cm)