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DPM Hardware Installation and Quick Start Guide

Confi guring the network prior to installation is recommended to allow the 
transponder communication to be verifi ed while the technician is on-site 
eliminating the need for a second visit if there are any problems. 

Hardware

 

Installation Procedure 

1.  Install the DPM.

a.  Turn the XM2-300HP battery circuit breaker off.
b.  Disconnect the battery from the front of the XM2-300HP.
c.  Disconnect the temperature sensor.
d.  Loosen the three inverter module thumbscrews, and slide the inverter 

module out of the power supply.

e.  Remove the existing communications panel from the inverter module.
f. 

Place the transponder on the sheet metal, inserting the RF connector 
through the hole in the angled fl ange.  Secure the circuit board to the panel 
with the two supplied Phillips head screws.

g.  Insert the 18 pin header (Alpha p/n:  540-492-19) into the 18 hole 

connector on the backside of the DPM.

h.  Press the DPM into the Inverter Module, aligning the 18-pin header 

correctly with the Inverter Module connector (Figures 4-6).

i. 

Tighten the two captive screws to secure the assembly to the inverter 
module.

j. 

Reinstall the inverter module, and tighten the three thumbscrews.

k.  Connect the environmental controller and/or LAP, and tamper switch (if 

present).

l. 

Reconnect the battery, and temperature sensor.

m.  Turn the battery circuit breaker back on.

Provision the RF MAC Address

The RF (modem) MAC Address is printed on barcode labels on the side 
of the DPM 

(Fig.3)

, as well as on the packing slip.

•  Provision via the proper DOCSIS

®

 confi guration fi le.

For units in service, backup battery power will not be available during 
the procedure.

CAUTION!

Fig. 2, Smart Display

Fig. 3, Captive Screw /MAC Address Label 

location

Fig. 6, Connecting the DPM

 to the Inverter Module

Fig. 5, Inverter Module connector

Verify the battery breaker remains in the OFF position during 
installation procedure.

 

CAUTION!

Fig. 4, 18 Pin Header 

(Alpha p/n: 540-492-19)

Fig. 1, Front view with callouts

6

5

8

7

9

2

1

4

3

2

1

4

3

6

5

8

7

9

ALM/RDY LED

Downstream Activity LED

Rx/Tx RF Power Status LED

LEDs for COM activity

Reset (RST) Button

Environmental (ENV) Control connector

Tamper Switch Connection

Ethernet (ETH) port

RF Connection

Battery Input

10

10

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