Alpha Technologies XP-EDH4 - Technical Manual - Manual (Page 9)

9 745-419-B0-001 Rev. A (11/2013)
The EDH4 transponder:
• Uses existing headend equipment
• Uses ANSI/SCTE HMS standards
• Measures analog or receives digital SCTE/HMS data from power supplies
• Can be network-managed through your existing CMTS
To the cable network infrastructure, the EDH4 transponder appears as a DOCSIS 2.0 cable modem. The
EDH4 is assigned an IP address like any other DOCSIS device on the DOCSIS network. The assigned
IP address is used to access the HMS status monitoring data via SNMP, the HMS MIBs and a Web
interface.
For complete DOCSIS specifications, please visit the CableLabs Website (www.cablelabs.com).
Fig. 1-1, The EDH4 Transponder
1.0 Introduction
1.1 Overview
Alpha’s EDH4 transponder provides the ability to manage network power through an existing cable
modem infrastructure for a variety of power supplies. Please see your Alpha representative for a complete
listing. This manual focuses on the power supplies listed below.
HMS-Enabled Power Supplies:
• XM2 with EDSM Interface
Non-HMS Alpha Power Supplies:
• AM with RPM interface
• XM with USM interface
• XM2 with USM2 or USM2.5 interface
Lectro Power Supplies:
• ZTT
• ZTT+
• CPR with Level 2 Interface
A single transponder can monitor a power supply and a maximum of four (4) battery strings. Power sites
with multiple standby power supplies and generators may possibly be monitored with one EDH4 unit
depending on the architecture, power supply models and data interfaces, please contact your Alpha
representative for details. The EDH4 transponder transmits data to a management system over the
network’s existing DOCSIS infrastructure using standard SNMP (Simple Network Management Protocol).
Status monitoring information is compatible with ANSI/SCTE HMS standards.