Alpha XP-EDH3 User Manual
Alpha XP-EDH3 Transponder
Field Installation Instructions
Effective: February 2009
Alpha Technologies
Overview to the eld installation instructions
The XP-EDH3 transponder provides the ability to manage network power through an existing cable modem
infrastructure, for a variety of power supplies as shown in this document.
These instructions provide information important to the successful installation, connection and operational verication of
the Alpha XP-EDH3 transponder in a variety of systems.
Save these instructons for future reference.
CAUTION!
Use a surge protector in the cabinet when the transformer is used to measure line voltage.
Do not place the transponder on top of the power supply or batteries.
Make all battery harness connections and connect the interface cable to the power supply before
connecting the cables to the transponder.
Before eld installation, the transponder's MAC address should be loaded into the CMTS, and DOCSIS conguration le
options should be set.
Alpha XM, XM2 and AM Models
See Subsequent Sections for power supply-specic setup instructions
Power Supply Communications Card Settings
NOTE:
Alpha AM power supplies with RPM interface cards marked 700-019-28, 700-019-31 and 700-019-40 are
compatible with the DOCSIS HMS Analog Transponder.
XM - USM
P1 = 2 & 3
P2, P4, P5, P6 = Closed
P3 = Open
P7 = 5V
P8, P9, P13 = 1 & 2
P14 = N/A
SW4 = 0
XM2 - USM2
SW1-1, 2, 6, 8 = On
SW2-1, 3, 4 = On
JP1 = C & 1
JP2 = 1 & 2
XM2 - USM2.5
SW1-1, 2, 6 = On
NOTE:
Output Current switch settings are determined by the output current capability of the power supply and should be
setup accordingly. See your power supply user manual for setting details.
USM: N/A•
USM2: SW1-3 = Output #1, SW1-4 = Output #2•
USM2.5: SW1-3 = Output Current Scaling, 15A or 22A•
RPM : No switch setting required•
2
745-419-C3-001 Rev. A (02/2009)
Connection Instructions for the Alpha AM, XM Series Power Supply
NOTE:
A chipset upgrade may be required; contact Alpha for more information.
Set the jumpers and calibrate the USM card before making connections and applying the load.
1. Switch Battery Breaker OFF prior to removing the Inverter Module for USM Card installation and conguration.
WARNING!
When installing Battery Sense Cable Kit (BSC) or AlphaGuard sense cable, do not connect the black
(negative) wire of the BSC to the negative post on Battery 1.
2. It is advisable to install the Battery or Aux pwr cables (providing power to the External DOCSIS unit) and waiting until
the RDY LED is ashing normally before installing the power supply interface kit. This will reduce the chances of the
power supply transferring to inverter due to a low signal reference on the test control pin.
Tamper switch
connection point
Pin 1
AM SERIES POWER SUPPLY CONNECTION
When connecting to an AM Series power supply, plug the 13-pin
connector so the black wire is in pin1 and two open pins are left
at the left for tamper switch connection (as viewed from the front
of the unit)..
Legend
1 Generator Interface (as needed) Alpha p/n 874-975-20
2, 5 Battery Sense Wire Kit for: 36V single string, 6', Alpha p/n 874-842-21
36V single string, 9', Alpha p/n 874-842-27
36V dual string, 6', Alpha p/n 874-842-20
36V dual string, 9', Alpha p/n 874-842-28
48V single string, 6', Alpha p/n 875-841-21
48V single string, 9' Alpha p/n 875-841-25
48V dual string, 6', Alpha p/n 875-841-20
48V dual string, 9', Alpha p/n 875-841-24
3 Ignition Battery/Aux Power Cable Alpha p/n 874-976-20
XM Series 2 Power Supply
Interface Cable
XM Series Power Supply
4
Interface Cable
AM Series Power Supply
Interface Cable
6 Craft Port Cable (optional) Alpha p/n 875-349-10
7 RTS Cable (optional) Alpha p/n 745-178-21
8 Vin Sense (optional) Alpha p/n 875-493-21
9 Surge Protector Ground Block Alpha p/n 162-028-10
Plug-in Lightning Arrestor w/pass thru
10
(130V) L-G, L-N, N-G
Alpha p/n 875-335-20 (USM2/2.5)
Alpha p/n: 875-335-21 (USM)
Alpha p/n: 875-335-21 (RPM)
Alpha p/n 162-046-10
Pin 1
Tamper switch
connection point
XM SERIES POWER SUPPLY CONNECTION
When connecting to an XM Series power supply, plug the 13-pin
connector so the black wire is in pin1 and two open pins are left at
the bottom for tamper switch connection (as viewed from the front
of the unit).
2
1
9
10
8
4
7
3
6
5
745-419-C3-001 Rev. A (02/2009)
Connections between transponder, power supply and laptop
3
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