Network Management Control Bus; Fuse Alarm; System Alarm Output Pins; Craft Port - ADC H2TU-C-202 User Manual

LTPH-UM-1072-03

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 ADC Management System protocols to manage the H2TU-C through the HMU-319 HiGain Management
Unit.
Some H2TU-C-202 List 2F features are affected when it is under management control. Consult
the management unit practice for further information. See
page 68.

Fuse Alarm

Pin 25 on the card-edge connector is a fuse alarm that is driven to -48 Vdc through a 1000Ω resistor whenever its
onboard fuse opens.

System Alarm Output Pins

Pins 22 and 30 on the card-edge connector shown in
Alarm output signals.
C P
RAFT ORT
Figure 36 below shows the pinout for the craft port connector and its connection to a DB-9 or DB-25 connector
on a maintenance terminal.
H2TU-C-202
DB-9 Connector
(DCE)
H2TU-C-202 List 2F
2 TD (Transmit Data)
RD (Receive Data)
3
5 GND
Figure 36. RS-232 Craft Port Pinouts
October 25, 2002
"Appendix D - Product Support" on
Figure 35 on page 64 are the H2TU-C-202 List 2F System
Appendix A - Specifications
Terminal
DB-9 Connector
(DTE)
2
3
5
Terminal
DB-25 Connector
(DTE)
3
2
7
65