User's Manual

Unit Descriptions - RF Path
P/N 709C011801
Page 30
Figure 2-2. HEU Front Panel with Installed Modules
Module Description
HCM (Headend Control
Module) (on page 30)
Provides system management and control functions. In Master/Slave
configurations, HCM is installed in the Master and ACM (on page 34) in
the Slave.
PSM (Power Supply Modules) 110-230VAC. If two are installed, both must be powered on.
RIX (RF Expander Module) – Service specific conditioner units.
OIX (Expander Module (on
page 32))
Used to interface with the parallel Expander Unit on the HEU.
Table 2-1. OIU Front Panel Interface Definitions
2.1.1.1 HCM (Headend Control Module)
The HCM provides management and control capabilities for the ONE™ system. Each INTERNAL port is dedicated to a single OIU
(see OIU (on page 33)) management connection. The HCM module includes Local and LAN management ports and LED status
indicators.
Figure 2-3. HCM Module