Specifications

12
OFFSET
Push the [FUNC] key, and then push this key to activate/deactivate the frequency offset in
duplex mode.
AFC
Push the [FUNC] key, and then push this key to activate/deactivate the AFC (Automatic
Frequency Control) function.
ENT
To validate data entry.
M. in
In the manual receive mode or search mode, push the [FUNC] key, and then push this key
to enter the frequency into memory.
1-6 Computer control
Connect the AR-ONE to the serial port of a computer using an RS-232C serial cable
terminated in a 9-pin male connector. The RS-232C parameters may be defined using the
CONFIG menu. Baud rates (transfer speed) can be set to 9600, 19200 (default) or 38400
bps. Since there are two independent RS-232C ports with the AR-ONE, it is possible to set
an ‘address’ to facilitate connection of up to 99 AR-ONE receivers to a single PC.
The RS-232C parameters are as follows:
Baud Rate: 9600, 19200 (default) or 38400 bps
De-limiter: CR, LF
Data bit: 8 bit
Stop bit: 2 bit
Parity: None
X flow: None
Please refer to chapter 7 for further details.
1-7 IF output and Spectrum Display Unit (SDU5600 )
The rear panel has a 10.7 MHz IF output designed to drive the optional SDU5600 Spectrum
Display Unit. The SDU5600 provides an excellent tool for locating elusive transmissions with
a PEAK capability to ‘freeze’ the briefest of transmissions for later measurement of
frequency and level after the event.
(Note: The IF output frequency is selectable in the CONFIG menu, 10.7 MHz or 455 kHz).