H2Tu-C-231 List 4E Card-Edge Connector; Network Management Control Bus - ADC HiGain H2TU-C-231 Manual

Appendix A - Specifications
H2TU-C-231 L
Figure 29 shows the card-edge connectors on the H2TU-C-231 List 4E. Active pins are highlighted in black.
* Fuse alarm is normally floating and at -48 Vdc when activated.
** System minor alarm contacts (pins 20 and 21) are normally open, and close upon alarm.

Network Management Control Bus

The H2TU-C provides a Network Management Control Bus on pin 46 of the card-edge connector. This allows the
various management system protocols to manage the H2TU-C through the HMU-319 HiGain Management Unit.
Whenever the H2TU-C is under management, the MNGD message appears periodically on the front-panel display.
Some H2TU-C-231 List 4E features are affected when it is under management. Consult the
management unit practice for further information (see
page 63).
58
4E C -E
IST ARD DGE
26
Tip
Ring 27
HDSL2 Span
28
29
30
31
32
Fuse alarm
*
33
34
35
36
37
KEY
38
-48 Vdc
39
40
41
DSX-1
Tip
42
IN
Ring
43
Ground 44
45
Management bus 46
47
48
49
Tip 1
DSX-1
OUT
Ring 1 50
Figure 29. H2TU-C-231 List 4E Card-Edge Connector
September 28, 2001
C
ONNECTOR
1
2
3
4
5
6
7
8
9
10
11
12
KEY
13
14
15
16
Ground
17
18
19
20
Alarms**
21
22
23 Factory use only
24
25
"Appendix D - Product Support" on
LTPH-TP-1034-01, Issue 1
H2TU-C-231 List 4E