150-402-111-02
Appendix
A:
Specifications
HRU-402 List 1A
December 8, 1998
57
DS-1
Line impedance
100
Ω
Pulse output
0 dB (Receive Level [REC LEV] = 0), -7.5 db
(REC LEV = -7.5), -15 dB (REC LEV = 15)
Input level sensitivity
> -22.5 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 (THRU)
Line Clock Rate
Internal stratum 4 clock