AOR SDU5600 Spectrum Display Unit Operating Manual

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®
FFT spectrum display unit
SDU5600
OPERATING MANUAL
PROFESSIONAL SPECTRUM
DISPLAY UNIT FOR USE WITH
A COMPANION RADIO  

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Index
Index
Safety notices  .................................................................................................  5
SDU5600 brief circuit description  ....................................................................  6
LCD resolution  ................................................................................................  6
Block diagram  .................................................................................................  7
Introduction...

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Index
5.5 Marker  ...................................................................................................... 28
5.6 Calculation facility  ..................................................................................... 30
5.7 Waterfall display facility  ............................................................................. 31
5.8 On/off of the display information  ............................................................... 32
5.9 Beep alert...

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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 2003.  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 trade marks of AOR Ltd. All other trade marks and names are acknowledged.  
E&OE
& Level of risk
As...

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Circuit description
SDU5600 Brief circuit description
The RF signal is fed by BNC socket into the SDU at a selected frequency of either 10.7MHz or 45.05MHz depending on the radio IF
frequency being used. This signal is split into two different signal paths depending upon which input frequency is selected. Both paths
are buffered and have Band Pass Filters with a bandwidth of +/-5kHz to eliminate unwanted signals outside of this range.
After the BPF, both signal paths join and are  amplified by a single...

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Block diagram  

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Introduction
Thank you for purchasing the SDU5600 FFT spectrum display unit.  AOR was the
first company in the world to market a colour spectrum display unit (SDU5000) for
professionals and the top-end of hobbyist listeners. The SDU5500 followed adding
sophistication and the SDU5600 is truly a successor incorporating a high resolution
5 inch (127mm) colour TFT display featuring FFT signal analysis and built-in waterfall
display backed by the latest microprocessor technology to ensure high versatility...

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1  Controls and Descriptions
Control and display of the SDU5600 is via the front panel with the rear panel
providing connections for the companion receiver, power and computer.
1-1 Front panel
LCD:  The large high resolution 5 inch colour TFT display provides all operational information and
spectrum display. The background is black with green graticule and white lettering for critical
information.  Menu items are varying shades of blue, the valid indicator is green with the function
indicator in...

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1-2 Rear panel
RF Input socket:  The IF output (10.7 MHz / 45.05 MHz) from a suitable receiver such as the
AR5000A should be connected to this BNC input socket using a 50 OHM patch lead constructed of
quality coaxial cable such as RG58/U, UR43, UR76 etc. A suitable BNC-BNC lead is supplied.
PC I/F socket (male):  A controlling computer may be connected to this 9-pin D-type male socket.
Ensure this socket is only commented to a computer for hands-off operation, although it is very
unlikely that...