150-402-102-01, Revision 01
Appendix A: Additional Technical Information
HRU-402 List 2
July 27, 1998
43
Environment
Operating
temperature
-40° to 149°F (-40° to + 65°C)
Operating humidity
5 to 95% non-condensing
HDSL
Line code
784 kbps 2B1Q full duplex
Output
+13 dB ± 0.5 dB @ 135
Ω
Line impedance
135
Ω
Line DC resistive
signature
14
Ω
Start-up time
15 seconds (typical)
30 seconds (maximum)
DS1
Line impedance
100
Ω
Pulse output
0 dB (RLEV = 0), -15 dB (RLEV = 15)
Input level
sensitivity
> -35 dB
Line rate
1.544 Mbps ± 200 bps
System output
wander (looped)
0.3 UI (648 ns.) max
Line format
AMI, B8ZS, or ZBTSI
Frame format
ESF, SF or unframed
Line Clock Rate
Internal stratum
4 clock
