Loop Attenuation; Higain Line Unit Card-Edge Connector; Network Management Control Bus; Hdsl2 Cable Attenuation Chart - ADC HiGain H2TU-C-388 User Manual

Appendix A - Specifications
L A
OOP TTENUATION
Each loop has no more than 35 dB of loss at 196 kHz, with driving and terminating impedances of 135 (see
Table 19 below).
H G L U
I AIN INE NIT
Figure 28 shows the card-edge connectors on the HiGain Line Unit. Active pins are highlighted in black.

Network Management Control Bus

The H2TU-C-388 provides a Network Management Control Bus on pin 104 of the card-edge connector. This
allows the various ADC Management System protocols to manage the H2TU-C through the HMU-319 HiGain
Management Unit. Whenever the H2TU-C-388 is under management, the MNGD message displays periodically on
the front-panel display.
Some HiGain Line Unit features are affected when it is under management. Consult the
management unit practice for further information.
50
Table 19. HDSL2 Cable Attenuation Chart
Cable Gauge Loss at 196 kHz (dB/kft)
26/0.4 mm 3.88
24/0.51 mm 2.84
22/0.61 mm 2.18
19/0.91 mm 1.54
C -E
ARD DGE
219
Ground
218
-48Vdc
217
216
215
214
213
212
211
210
209
208
207
206
205
204
203
202
201
200
* Fuse alarm is normally floating (0 to 80 Vdc max.) and
at -48 Vdc (10 mA max.) when activated.
Figure 28. HiGain Line Unit Card-Edge Connector
per kft
83
52
32
16
C
ONNECTOR
Frame ground
119
118 Ground
117 Fuse alarm*
116
115 Ring 1
DSX-1 OUT
114 Tip 1
113
112
111
110 Ring
DSX-1 IN
109 Tip
108
107 Factory burn-in
106
105
Management bus
104
103
Ring 1
102
HDSL2 Span
101 Tip 1
100
June 6, 2000
152-388-100-02, Issue 2
H2TU-C-388 List 1