User's Manual
Table Of Contents
- 1 Introduction
- 2 Unit Descriptions
- 3 Installation Guidelines
- 3.1 General System Specifications and Requirements
- 3.2 Infrastructure Preparation
- 3.3 Antenna Specifications and Guidelines
- 4 IHU Installation
- 4.1 General Installation Information
- 4.2 IHU Installation
- 4.3 Grounding Chassis
- 4.4 RF Connections
- 4.5 IHU Fiber Connections
- 4.6 Management Connections
- 4.7 Power Connections and Power Up
- 4.8 Verifying Normal Operation
- 5 PSU6 Installation
- 6 MRU Installation
- 7 Appendix A: Specifications
- 8 Appendix B: Ordering Information
Corning Optical Communications DRAFT User Manual I CMA-XXX-AEN I Page 19
IHU hosts the following modules:
Module
Description
Control
Module
One of the following control modules is installed in each IHU:
• HCM (Headend Control Module) - one HCM per system. See section 2.1.1.1.
• ACM (Auxiliary Control Module) - installed in second IHU if installed. See section 2.1.1.2.
RIM
Radio interface module – up to 12 per HEU. See section 2.1.2.
RIX
RF expander module – interface to OIX. See section 2.1.3.
PSM
Power supply module – AC and DC models can be ordered. Each IHU supports two PSMs for
redundancy, where the same PSM type does not need to be installed in both slots. (Section
2.1.4).
Note: If one module is installed, it must be installed in the left slot. If two modules are installed,
both must be powered on.
OIM
Optical interface module - converts the RF to three optical links (see Section
2.1.4
)
OIX
Optical interface expander - interface to RIX (see Section
Error! Reference source not found.
).
Table 2-1. IHU Modules
2.1.1 Control Module
2.1.1.1 Headend Control Module (HCM)
This is a system control module that provides management
and control capabilities for all headend and remote-end
devices in a setup. One HCM is installed per setup in an IHU.
The HCM directly interfaces to the corporate LAN. It can be
connected to (up to) four auxiliary control modules (ACMs)
installed in additional headend units.
Figure 2-2. HCM Module
Table 2-2 and Table 2-3 provide a description of the HCM ports and LED status indicators.
Port Description
INTERNAL (TO ACM)
Four RJ45, 100 Mb Ethernet ports - used for management of connected OIU
systems (and/or Auxiliary HEUs).
LAN RJ-45, 1 Gb Ethernet port - connects to the corporate LAN for remote management
LOCAL RJ-45, 1 Gb Ethernet port - local configuration and management
CONSOLE RJ-45, serial port - local configuration for service personnel
SD Card Slot
Supports micro SD cards up to 32 GB (used for saving and importing configuration
files between different HEU chassis)
Table 2-2. HCM Interface Ports