ADC HRM-238 L1 - Manual (Page 10)

Overview LTPH-UM-1237-04
2 July 21, 2004 HRM-238 List 1
O
PERATIONAL
C
APABILITIES
Application
With two HMU-319 management units installed, the HRM-238 shelf provides network management for up to 56
HiGain line units.
Recommended Network Setup for 220 Type Shelves
The configuration shown in Figure 2 is the recommended setup for 220 type mechanics shelves. Position the
HRM-238 shelf between the 220 type shelves, with up to two 220-type shelves above and two below. This limits
the distance for the wire leads between the connectors for the management units and the line units they manage.
Figure 2 shows the HRM-238 shelf from the rear view with the A-side connectors on the right and the B-side
connectors on the left. The leads from the HRM-238 shelf connector attach to the Network Management Agent
(NMA) pins on the rear of the 220-type mechanics shelves for each line unit managed. The NMA pin on 220 type
chassis is pin 46.
Figure 2. Recommended Network Setup for 220 Type Shelves
HCS-417/418
HCS-417/418
HCS-417/418
HCS-417/418
HRM-238
-48V A
-48V A
-48V A
-48V A
-48V B
-48V B
-48V B
-48V B
NMA 1 to 14 B
NMA 15 to 28 B
NMA 1 to 28 B
NMA 1 to 14 A
Network B Network A
TB1
CO -48V
Supply
NMA 15 to 28 A
NMA 1 to 28 A
H0544-B