OPERATIONAL CAPABILITIES
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.
NMA 1 to 14 B
NMA 15 to 28 B
NMA 1 to 28 B
| HCS-417/418 | -48V A | |
| -48V B | |
| | |
| HCS-417/418 | -48V A | |
| -48V B | |
| | |
CO -48V | | |
Supply | | | |
| TB1 | | |
Network B | HRM-238 | Network A | NMA 1 to 28 A |
-48V A
HCS-417/418NMA 1 to 14 A
-48V B
-48V A
HCS-417/418NMA 15 to 28 A
-48V B
H0544-B
Figure 2. Recommended Network Setup for 220 Type Shelves
2 | July 21, 2004 | HRM-238 List 1 |
