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

Appendix A - Specifications

Network Management Control Bus

The H2TU-C provides a Management 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.

Fuse Alarm

Pin 25 on the card-edge connector is a Fuse Alarm that is driven to -48 Vdc through a diode whenever its onboard
fuse opens.

System Alarm Output Pins

Pins 22 and 30 on the card-edge connector (see
C P
RAFT ORT
Figure 29 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)
54
Figure
2 TD (Transmit Data)
RD (Receive Data)
3
5 GND
Figure 29. RS-232 Craft Port Pinouts
April 21, 2000
28) are the H2TU-C-202 System Alarm output pins.
152-202-115-04, Revision 04
Terminal
DB-9 Connector
(DTE)
2
3
5
Terminal
DB-25 Connector
(DTE)
3
2
7
H2TU-C-202 List 1E