AOR ARD-25 Instruction Manual

ARD25

MULTIMODE DATA RECEIVER

FOR USE WITH A COMPANION RECEIVER

INSTRUCTION MANUAL

AOR, LTD.

TABLE OF CONTENTS

1 Index ------------------------------------------------------------------------------------------------ 2

1-1 Introduction --------------------------------------------------------------------------------------- 2
1-2 Power requirements --------------------------------------------------------------------------- 3
1-3 Supplied accessories ------------------------------------------------------------------------- 3
1-4 Features ------------------------------------------------------------------------------------------ 3

2 Control and functions ------------------------------------------------------------------------------ 4
2-1 Front panel controls ---------------------------------------------------------------------------- 4

2-2 Rear Panel --------------------------------------------------------------------------------------- 5
3 Connection to a receiver ---------------------------------------------------------------------------- 6
3-1 Configuration of the AR5000 receiver ----------------------------------------------------- 6

3-2 Configuration of the companion receiver(s) ---------------------------------------------- 6

4 Switch on the ARD25 -------------------------------------------------------------------------------- 6
5 ARD25 Operation ---------------------------------------------------------------------------------------- 7

5-1 Power LED ---------------------------------------------------------------------------------------- 7
5-2 Receiver settings ------------------------------------------------------------------------------ 7
5-3 Receive mode ----------------------------------------------------------------------------------- 7
5-4 Speaker output level ---------------------------------------------------------------------------- 7

6 Computer control information ----------------------------------------------------------------------- 8
7 Specifications --------------------------------------------------------------------------------------------- 8
8 FCC Information For Digital Device users ------------------------------------------------------- 9
9 Limited warranty ------------------------------------------------------------------------------------------ 9

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1 Introduction

1-1 Introduction

Thank you for purchasing the ARD25 Multimode Data receiver.
In recent years, many communications have changed from analog mode to digital mode to meet

more communication demands. APCO Project 25, as an example, has been adopted by many
public safety or police departments in several major cities.

The ARD25 is designed to convert conventional APCO25 (P25) digital communications to analog
signals.

To get the best possible results, we recommend that you read this manual to fully familiarize
yourself with the ARD25.

Every effort has been made to make this manual correct and up to date. Due to continuous
development of the product (and by error or omission), anomalies may be found and this is
acknowledged.

© This manual is protected by copyright AOR, LTD. 2004. No information contained in this
manual may be copied or transferred by any means without the prior written consent of AOR,
LTD. AOR and the AOR logo are trademarks of AOR, LTD. All other trademarks and names are
acknowledged.

Some words of caution – The ARD25 is not effective on systems that use encryption or digital
modulation other than APCO Project 25. It cannot translate signals from receivers that do not
have a 10.7 MHz IF output, as the full channel bandwidth is needed to convert the signal from
digital to analog. The ARD25 does not add trunking capabilities to your receiver. Some
jurisdictions may limit the use of devices such as the ARD25.

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1-2 Power requirements

The ARD25 comes with a 120 V AC adapter. The ARD25 is designed for operation from a
nominal 12 V DC regulated power supply (12 to 14 V is acceptable), which should be capable of
supplying a minimum of 1 amp, continuous.

[Note: Never connect the ARD25 directly to an AC outlet.]
The DC power jack uses a mini power connector and is wired center positive (+), the chassis of

the unit is at negative ground. To minimize the potential for power cable interference, it is
suggested that a ferrite clamp be fitted to the power cable.

[Safety Notice: Always disconnect the power supply from the AC outlet when not in use.]

Should the ARD25 appear to behave strangely, normal operation may easily be resumed by
resetting the microprocessor. Simply power off the ARD25 and disconnect the power supply.
Leave the power off for 30 seconds, and then re-connect and power back on again.

1-3 Supplied accessories

The following accessories are provided in the shipping box.

1 Speaker cable (with a 3.5 mm plug at each end)
1 BNC patch cable for IF connection
1 Instruction manual (this booklet)
1 120 V AC adapter

[Note: If used with the AR3000A receiver, a small modification to the receiver is needed in
order to provide the required 10.7 MHz IF output.]

1-4 Features

• Decode APCO Project 25 digital voice signal (Non encryption mode)

• Convert your analog receiver (equipped 10.7 MHz IF output) into a digital receiver

without any modifications to most receivers

• Decode analog NFM (Narrow FM) signals

• Compact size

• Built-in speaker

• Data output through RS-232C serial port

• Compatible with other receivers

A receiver equipped with a 10.7 MHz IF output can provide signals to the ARD25.

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