ADC H2TU-C-388 - Manual (Page 58)

Appendix A - Specifications 152-388-100-02, Issue 2
50 June 6, 2000 H2TU-C-388 List 1
L
OOP
A
TTENUATION
Each loop has no more than 35 dB of loss at 196 kHz, with driving and terminating impedances of 135
Ω
(see
Table 19 below).
H
I
G
AIN
L
INE
U
NIT
C
ARD
-E
DGE
C
ONNECTOR
Figure 28 shows the card-edge connectors on the HiGain Line Unit. Active pins are highlighted in black.
Figure 28. HiGain Line Unit Card-Edge Connector
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.
Table 19. HDSL2 Cable Attenuation Chart
Cable Gauge Loss at 196 kHz (dB/kft)
Ω
per kft
26/0.4 mm 3.88 83
24/0.51 mm 2.84 52
22/0.61 mm 2.18 32
19/0.91 mm 1.54 16
Some HiGain Line Unit features are affected when it is under management. Consult the
management unit practice for further information.
106
105
104
103
102
101
100
DSX-1 OUT
DSX-1 IN
HDSL2 Span
205
204
203
202
201
200
119
118
117
116
115
114
113
112
111
110
Ground Ground
Frame ground
Fuse alarm*
Ring 1
Tip 1
Management bus
Ring
Ring 1
Tip
Tip 1
Factory burn-in
-48Vdc
219
218
217
216
215
214
213
212
211
210
209
208
207
206
109
108
107
* Fuse alarm is normally floating (0 to 80 Vdc max.) and
at -48 Vdc (10 mA max.) when activated.