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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
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Decode APCO Project 25 digital voice signal (Non encryption mode)
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Convert your analog receiver (equipped 10.7 MHz IF output) into a digital receiver
without any modifications to most receivers
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Decode analog NFM (Narrow FM) signals
•
Compact size
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Built-in speaker
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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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