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© Inovonics, 2009 - www.inovonics.com

RDL8500 Remote Data Logger

Installation Instructions - 05456B

1 Introduction

The remote data logger is installed at a submetering site’s head end 
location to collect data from transmitters using the EN4000 RF gateway. 
The RDL8500 can remotely communicate with the billing service, or with an 
onsite technician, using the TapWatch 3 software. 

1.1 Inovonics Contact Information

If you have any problems with this installation, contact Inovonics techical 
support:

• E-mail: [email protected]
• Phone: (800) 782-2709

2 RDL8500 Installation Components

 Figure 1  

RDL8500 components

2.1 RDL8500 Installation LEDs

Note: 

The rest of the LEDs are reserved for future use.

2.2 RDL8500 Panel LEDs

The following LEDs are not shown in the drawing above, but are located on 
the cover, and marked appropriately.

3 RDL8500 Installation Instructions

1.

Using the anchors and screws provided, mount the RDL8500 within 50 
feet of where you plan to mount the gateway, in a location near a 
standard 120 VAC wall outlet and the phone line or ethernet connection 
you wish to use.

Caution: 

Neither the gateway or the RDL8500 should ever be installed at 

floor level.

2.

If using a phone line, connect the phone line from the screw terminals 
on a hardwired wall bracket to the terminal blocks on the RDL8500.

• The phone line should be connected to the telephone wall outlet using 

the screw terminals. The RJ11 plug-in phone connector is provided for 
easy access to the phone line during on-site maintenance.  

3.

If using an ethernet connection, connect to the WAN port.

4.

Use 18 or 20-guage wire to connect 12 VAC power to the RDL8500 with 
the provided transformer.

• Circuit protection is built into the RDL8500.

Caution: 

Make sure not to short the transformer’s terminals when the 

powered. Shorting the transformer when powered will destroy the 
transformer.

5.

Secure the transformer to the outlet with the provided screw.

Caution: 

Telephone, ethernet, and power connections should be as 

mechanically robust as possible, and protected from accidental 
disconnection. 

Caution: 

Wiring should exit through the back of the RDL8500, be cut to 

length, and stapled neatly to the wall to reduce the possibility of personal 
injury or equipment damage.

4 EN4000 Installation Instructions

 Figure 2  

Serial Receiver components

LED

Description

TX1

Lit when transmitting data to the first gateway.

RX1

Lit when receiving data from the first gateway.

TX2

Lit when transmitting data to the second gateway.

RX2

Lit when receiving data from the second gateway.

FAN

Lit when the fan is running.

TXD

Lit when the modem is transmitting data.

RXD

Lit when the modem is receiving data.

DTR

Lit when the modem is ready.

DCD

Lit when the modem is connected.

RI

Lit when the modem is ringing.

Power 
terminals

Modem 
terminals

Diagnostics 
LAN port

WAN 
port

Diagnostics 
RJ11 jack

Second 
gateway 
serial 
terminal

First 
gateway 
serial 
terminal

LED

Description

handshaking

Lit when the modem is initializing connection to the 
billing service.

receiver 
message

Lights when a serial data message is received from the 
gateway.

remote 
connection

Lit when the modem is connected to the customer’s 
billing service.

power

Lit when the RDL8500 is receiving power.

A

Housing release tab

B

Frequency band selection pins

C

Serial data port

D

Serial data terminal

F

b

C

D

B

G

H

I

A

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