Management Cabling; Hrm-238 Shelf Backplane Connectors (Back View); Hrm-238 Connectors - ADC HRM-238 L1 User Manual

Overview

Management Cabling

Figure 5 shows the location for each connector on the HRM-238 shelf backplane.
types and management functions available to the HMU-319 management units through those connectors.
50-pin Amphenol AUX port DB-25
connector (P6)
Alarm relay pins (J14)
Connector Purpose
P1, P6 Provides connection from the HRM-238 shelf for the management
units to each individual card that they manage.
P2, P3, P4, P5 Provides 4 connection points (two for each management unit) for a
terminal, computer, or modem. There is one AUX port and one OS port
connector for each management unit.
TB1 Provides separate -48 Vdc connection from the CO battery source
to each management unit. Also provides battery common ground and
a frame ground.
J13, J14 Provides connection for alarm relay contacts.
J1, J3 Provides a 10BASE-2 connection to a LAN.
4
B-side connectors
OS port DB-25
connector (P5) connector (P4)
BNC connector (J3)
Figure 5. HRM-238 Shelf Backplane Connectors (back view)
Table 1. HRM-238 Connectors
A-side connectors
AUX port DB-25 OS port DB-25
connector (P3) connector (P2)
Terminal block (TB1) Alarm relay pins (J13)
July 21, 2004
LTPH-UM-1237-04
Table 1 lists the shelf connector
50-pin Amphenol
connector (P1)
H0545-A
BNC connector (J1)
No. of
Type Gender
Pins
Amphenol Male 50
(CHAMP)
DB-25 Female 25
Terminal N/A 6
block
Wire-wrap Male 23
pins
BNC Female 1
HRM-238 List 1