150-359-100-01, Revision 01
Appendix A - Specifications
HXU-359 List 1
October 27, 2000
49
A
PPENDIX
A - S
PECIFICATIONS
STS-1 Interface (Multiplexer)
Cable
Line rate
51.840 megabits/s ± 20 ppm
Line code
B3ZS
Line impedance
75
Ω
±5 %
STS-1 span buildout
0 to 450 ft. (0 to 137.2 m)
DS1 Internal Interface to Backplane
Number of lines
28 DS1s
Line rate
1.544 megabits/s ± 32 ppm output,
± 130 ppm input
Line code
AMI or B8ZS selectable (per DS1 channel)
Line impedance
100
Ω
±5%, balanced
Pulse amplitude
3.0 V ±0.6 V
Jitter generation
<0.3 UI rms (1 UI = 648 ns)
DS1 span
1 to 655 ft. (.3 to 199.6 m)
Cable
ABAM or equivalent
Environmental Requirements
Operating temperature
-40° F to 149° F (-40° C to +65° C)
Storage temperature
-40° F to 158° F (-40° C to +70° C)
Humidity
5% to 95% non-condensing
Operating altitude
0 ft. to 13,000 ft. (0 to 4000 m)
Power Requirements
Input voltage
-40 Vdc to -57.5 Vdc
Power dissipation
15 W maximum operating, 10 W standby
Physical Dimensions
Length
9.81 in. (24.9 cm)
Width
7.72 in. (19.6 cm)
Height
.75 in. (1.9 cm)
Weight
.88 lb. (0.4 kg)
