2
017-950-B1-001, Rev. A (07/2020)
1.1 Communications Module
The Communications Module consists of the Element Monitoring Module (EMM), Cable Modem Module (CMM) and Smart
AlphaGuard™ (SAG) battery balancer. The embedded Cable Modem Module (CMM) may be ordered factory-installed or
added later to the Inverter Module by qualified personnel or Alpha
®
Service Depot. The CMM embedded DOCSIS
®
Status
Monitoring unit enables monitoring of Alpha power supplies through existing cable network infrastructure. Advanced
networking services provide quick reporting and access to critical powering information.
The CMM utilizes Simple Network Management Protocol (SNMP), standard SCTE-HMS and Alpha Management
Information Bases (MIBs) to provide network status monitoring and diagnostics. A web interface enables authorized
personnel direct access to advanced diagnostics using a common web browser. This guide pertains to all models and
standard options. Refer to the technical manual for additional details on advanced status monitoring using the SFP optical
port.
The EMM supports the Smart Display functionality and provides the communication interface between the inverter module
and the Cable Modem module. It also supports the necessary data storage and performs optional advanced AlphaAPPs
functions such as logging power supply events, utility events, and battery health analysis. Additionally, the EMM provides
the interface for the local Ethernet interface and logic for the ancillary equipment such as tamper switches.
1
3
2
4
6
1
COM Indicator LED
2
Cable Modem Power (PWR) Indicator
3
Downstream LED
4
Upstream LED
5
Small Form-factor Pluggable (SFP) Port
10
11
12
13
14
15
Fig. 1-2, Communications Module Features
6
Online LED
7
Ethernet Status LED
8
Alarm / Ready LED
9
Rx/Tx Power LED
10
Environmental (ENV) Control Connector
11
Smart AlphaGuard (SAG) Connector
12
Ethernet (ETH) Connector
13
Tamper (TPR) Switch Connector
14
Reset Button
15
RF Connector for CMM
Cable Modem Module (CMM)
Element Monitoring
Module (EMM)
Smart AlphaGuard (SAG)
5
7
8
9
