ADC HDSL4 - Manual (Page 70)

Appendix A - Specifications LTPH-UM-1031-03, Issue 3
62 September 12, 2003 H4TU-C-319 List 1
H4TU-C-319 C
ARD
-E
DGE
C
ONNECTOR
Figure 32 shows the card-edge connectors on the H4TU-C-319. Active pins are highlighted in black.
Figure 32. H4TU-C-319 Card-Edge Connector
Network Management Control Bus
The H4TU-C provides a Network Management Control Bus on pin 7 of the card-edge connector. This allows the
various Management System protocols to manage the H4TU-C through the HMU-319. Whenever the H4TU-C is
under management, the
MNGD message displays periodically on the front-panel display.
Fuse Alarm
Pin 10 on the card-edge connector is a Fuse Alarm that is driven to -48 Vdc whenever its onboard fuse opens. It
emulates the function of the Fuse Alarm output from pin 10 on normal, high-density (HD) repeaters. Pin 10 is
connected to pin 5 of the 1184 Alarm Card (slot 1 in the HD shelf) and causes the 1184 Fuse ALM LED to light
when the pin 10 signal is activated. Its normally floating output must never be driven above ground or below
-80 V. It can sink a current of 10 mA. The H4TU-C does not support the BPV function (Pin E) of normal HD
repeaters.
Some H4TU-C-319 features are affected when it is under management. Consult the management
unit practice for further information (see
“Appendix D - Product Support” on page 66 ).
3
4
5
6
C
D
E
F
H 7
8 J
9 K
10 L
GND
HDSL4 - L1Tip HDSL4 - L1 Ring
System Alarm** Management Bus**
Frame GND -48 Vdc
Fuse Alarm* (Do not use)
1 A (IN) DSX-1Tip DSX-1 Ring (IN)
2 B
(OUT) DSX-1Tip 1 DSX-1 Ring 1 (OUT)
Fuse Alarm
System Alarm and Management Bus (reserved)
Normal = Floating (0 to -60 Vdc maximum)
Activated = -48 Vdc (10 mA maximum)
*
**
HDSL4 - L2Tip HDSL4 - L2 Ring