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SDU5600
PROFESSIONAL SPECTRUM DISPLAY UNIT
FOR USE WITH A COMPANION RECEIVER
INSTRUCTION MANUAL
AOR, LTD.
TABLE OF CONTENTS
1 Index ------------------------------------------------------------------------------------------------ 1
1-1 Introduction -------------------------------------------------------------------------------------- 2
1-2 Taking care of the unit ------------------------------------------------------------------------ 2
1-3 Power requirements --------------------------------------------------------------------------- 2
1-4 Supplied accessories ------------------------------------------------------------------------- 3
1-5 Features ------------------------------------------------------------------------------------------ 3
2 Control and functions ------------------------------------------------------------------------------ 4
2-1 Front panel controls ---------------------------------------------------------------------------- 4
2-2 Rear Panel --------------------------------------------------------------------------------------- 6
3 Connection to a receiver ---------------------------------------------------------------------------- 7
3-1 Configuration of the AR5000 receiver ----------------------------------------------------- 7
3-2 Configuration of the companion receiver(s) ---------------------------------------------- 7
4 Switch on the SDU5600 ---------------------------------------------------------------------------- 8
5 Operations of the SDU5600 ------------------------------------------------------------------------ 8
5-1 Display ---------------------------------------------------------------------------------------------- 8
5-2 Main Control Keys ------------------------------------------------------------------------------ 10
5-3 Default mode ------------------------------------------------------------------------------------- 10
5-4 When the communication is disconnected from the receiver ------------------------- 11
6 Settings ----------------------------------------------------------------------------------------------------- 11
6-1 Configuration menu ----------------------------------------------------------------------------- 11
6-2 Companion receivers --------------------------------------------------------------------------- 12
6-3 Receiver settings --------------------------------------------------------------------------------- 12
6-4 Controlling the receive frequency ------------------------------------------------------------ 13
6-4-1 Spectrum analyzer mode ------------------------------------------------------------------ 13
6-4-2 Channel scope mode ------------------------------------------------------------------------ 14
6-5 Operation modes -------------------------------------------------------------------------------- 15
6-6 Basic settings for operation -------------------------------------------------------------------- 17
6-6-1 Spectrum analyzer mode ------------------------------------------------------------------- 17
6-6-2 Step resolution mode ------------------------------------------------------------------------ 18
6-6-3 Channel scope mode ------------------------------------------------------------------------ 20
6-6-4 Other settings ---------------------------------------------------------------------------------- 21
6-7 Marker function ----------------------------------------------------------------------------------- 24
6-8 Calculation function ------------------------------------------------------------------------------ 27
6-8-1 Maximum trace (MAX) ---------------------------------------------------------------------- 27
6-8-2 Average trace (AVE) ------------------------------------------------------------------------- 27
6-8-3 Middle trace (MED) ---------------------------------------------------------------------------- 28
6-9 Waterfall function ---------------------------------------------------------------------------------- 28
6-10 Display setting -------------------------------------------------------------------------------------- 29
6-11 Beep on / of ----------------------------------------------------------------------------------------- 29
6-12 Resetting the SDU5600 --------------------------------------------------------------------------- 29
7 Getting started ---------------------------------------------------------------------------------------------- 29
7-1 Using the SDU5600 with the AR5000 receiver --------------------------------------------- 30
7-2 Monitoring FM broadcast frequencies in the Spectrum Analyzer Mode ------------- 31
7-3 Monitoring FM broadcast frequencies in the Step Resolution Mode ----------------- 32
7-4 Monitoring VHF Air Band in the Channel Scope Mode ----------------------------------- 33
7-5 Operation mode summary ---------------------------------------------------------------------- 34
8 Special considerations ----------------------------------------------------------------------------------- 34
9 Computer control information ------------------------------------------------------------------------ 35
10 Specifications ---------------------------------------------------------------------------------------------- 36
11 FCC Information For Digital Device users -------------------------------------------------------- 36
12 Limited warranty ------------------------------------------------------------------------------------------- 36
1
1-1 Introduction
Thank you for purchasing the SDU5600 Spectrum Display Unit. For many years, AOR has been
marketing the world’s first color spectrum display unit, SDU5000 for professionals and the highend of hobby listeners. The SDU5500 was a worthy successor to the SDU5000, suing a large
high resolution LCD. The SDU5600 is the “next generation” in spectrum display units. Using a
five-inch TFT color display, DSP (Digital Signal Processing) and FFT (Fast Fourier Transform),
faster sampling rates and color imaging, the SDU5600 opens the door to new possibilities and
applications. To get the best possible results, we recommend that you read this manual to fully
familiarize yourself with the SDU5600.
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 trademarks of AOR, LTD. All other trademarks and names are
acknowledged.
1-2 Maintaining the unit
There are no internal operator adjustments. In the unlikely event of servicing being required,
please contact your dealer for technical assistance.
Do not use or leave the SDU5600 in direct sunlight (especially the LCD). It is best to avoid
locations where excessive heat, humidity, dust and vibration are expected. Always keep the
SDU5600 free from dust and moisture. LCD contrast and brightness may be adjusted via menus,
adjust appropriately to your operating environment.
[Note: Never push or knock the LCD screen – it is very fragile and sensitive to shock.]
Daily care
Use a soft, dry cloth to gently wipe the SDU5600 clean. Never use abrasive cleaners or organic
solvents which may damage certain parts. Treat the unit with care, avoid spillage or leakage of
liquids into the cabinet and power supply. Special care should be taken to avoid liquid entering
around the keys, rotary dial encoder or via the connectors.
1-3 Power requirements
The SDU5600 comes with a 120 V AC adapter. The SDU5600 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, ideally a 2 amp power supply unit should be used.
[Note: Never connect the SDU5600 directly to an AC outlet.]
The DC power jack uses a mini power connector conforming to EIAJ RC-5320A 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.]
2
Should the SDU5600 appear to behave strangely, normal operation may easily be resumed by
resetting the microprocessor. Simply power off the SDU5600 and disconnect the power supply.
Leave the power off for 30 seconds, and then re-connect and power back on again.
1-4 Supplied accessories
The following accessories are provided in the shipping box.
1 Control cable for the AR5000 models (DB-9 type male)
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 is required to the receiver in
order to provide the required 10.7 MHz IF output.]
1-5 Features
• High resolution 5 inch color TFT display
5 inch TFT color display graphics are clear, crisp and sharp. Color adds to the ease of
use, making the SDU5600 as useful on the bench as it is in the field or as part of
permanent mobile operations.
• Built-in “waterfall” display function
• FFT signal processing and analysis
• DSP
• Wide input level range
0 ~ -90dBm
• High dynamic range
60 dB
• Fully interactive with AOR AR5000 models
AR5000 models can be operated from the SDU5600 providing selection of center
frequency, receive mode, etc. Any frequency spotted and monitored by the SDU5600
may be immediately received by the AR5000.
• Wide spectrum coverage
The SDU5600 covers a maximum of 10 MHz (+/- 5 MHz) spread against the input
frequency.
• Multiple frequency resolutions
4, 32, 64, 128 KHz
• Fast sampling
Up to 6x per second
• Image output to your PC
• Bus signal can be saved to memory
• Menu driven operation
All functions are accessible via dedicated keys and on-screen menus.
• Remote control via PC
All keyboard operations of the SDU5600 can be controlled by PC via RS-232C. Also
acquired data can be downloaded to PC.
• Compatible with other receivers
A receiver equipped with a 10.7 MHz IF output can provide signals to the SDU5600. The
sweep span could be limited, depending on the IF characteristics of the chosen receiver.
3
2 Controls and functions
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2-1 Front panel controls
The front panel of the SDU5600 is dominated by the large color LCD. Controls are ‘grouped’ to
assist efficient operation; there are a total of 26 keys in addition to the power on/off switch and the
rotary dial encoder.
1 Power switch
Press once to latch the switch in, switching on the SDU5600.
To switch off the SDU5600, press the switch again, the switch
releases outward.
4
2 LCD (Liquid Crystal Display)
5 inch TFT color display graphics
3 Special function keys
Three special function keys are located under the LCD. There is no ‘printed legend’
identifying the keys as their operations are defined by which menu is active on the
LCD.
4 Rotary dial encoder
A rotary dial encoder is provided to move the marker position, enter center frequency
to the unit, and so forth.
5. Main Control keys
There are 20 main keys including numeric keys. Some keys have secondary functions,
and the functions are printed above each respective key. To access the secondary
function, press the “FUNC” key located at the top right of the control keys,
and then press respective key.
5
6. Special keys
Three (3) special keys are provided with the SDU5600. Those keys are to be used for
entry of center frequency, frequency span/step, and amplifier gain select.
2-2 Rear panel
The rear of the SDU5600 has two (2) DB-9 connectors for connection to the companion
receiver and PC, one (1) BNC connector for IF input, and one (1) DC power connector.
A blank plate covers the unused section of the rear panel, which may be used for possible
future expansion or options.
1. RF IN
Using the supplied coaxial cable with a BNC connector at each end, connect to the IF
output from the companion receiver such as an AOR AR5000 series receiver.
2. PC I/F
A computer may be connected to this connector. As the connector is identical
to that used for the companion receiver connection, great care should be taken to avoid
connection to the incorrect connector. Although it is very unlikely that incorrect connection
could cause damage, it will cause unnecessary delay in placing the SDU5600 into useful
operation.
3. RX CTR
The supplied DB-9 cable is used to connect the SDU5600 to the companion receiver.
6
4. DC 12 V
Connect the supplied AC adapter to this connector. If you wish to operate with 12 V
external regulated power supply, it should have a minimum continuous capacity of 1 A
or higher, ideally a 2 A (or higher) supply should be used.
The connector complies with EIAJ RC-5320A and is wired center positive (+), outer
negative (-).
3 Connection to a receiver
3-1 Configuration of the AR5000 receiver
Before connecting the SDU5600 to a receiver, the power switch of the SDU5600 and the
receiver must be turned off.
In order to control the AR5000 receiver, the following setting is required to the AR5000
receiver.
Baud rate: 9600 bps
External IF output: EXT – IF1
(Note: See details on page 29 of the AR5000 instruction manual.)
1 Connect an AC adapter to the SDU5600.
2 Connect the DB-9 interface cable between the RX CTR connector on the rear panel of
the SDU5600 and the REMOTE connector on the rear panel of the AR5000 receiver.
3 Connect the included BNC cable between the RF IN connector of the rear panel of the
SDU5600 and the IF OUT connector on the rear panel of the AR5000 receiver.
3-2 Configuration of the companion receivers
Your SDU5600 may be used with the following companion receivers.
(Note: Some receivers require modifications.)
7
Receiver menu Model number Remarks
============================================================
AR5000A+3
AR5000A Set External IF output
AR5000 AR5000+3 (See above)
AR5000
--------------------------------------------------------------------------------------------------------- AR3000A AR3000A 10.7 MHz IF modification required
Baud rate: 4800 bps
----------------------------------------------------------------------------------------------------------
AR8600 AR8600 10.7 MHz all mode modification
required
----------------------------------------------------------------------------------------------------------
AR8200 AR8200MKII 45 MHz IF modification
AR8200MKIII & CC8200A required
---------------------------------------------------------------------------------------------------------- AR-ONE AR-ONE Set IF output frequency
------------------------------------------------------------------------------------------------------------
RFU5600 RFU5600
------------------------------------------------------------------------------------------------------------
IC-R8500 ICOM ® IC-R8500
------------------------------------------------------------------------------------------------------------
IC-R7100 ICOM ® IC-R7100 Optional CT-17 required
==============================================================
4 Switch on the SDU5600…
It is important that the AR5000 receiver is switched on FIRST, and then press the power
switch of the SDU5600 so that the display appears on the receiver and the SDU5600.
Please note that the AR5000 must be set to 9600 bps in advance.
To switch off the SDU5600, press the power switch again and then switch off the AR5000.
5 Operations of the SDU5600
5-1 Display
Once the SDU5600 is properly connected with the receiver, the display will appear on the
screen.
8
(1) CF Center Frequency
The frequency at the center of the screen is always indicated in MHz, and the highest
resolution is 10 Hz.
(2) SPAN Total displayed bandwidth
The center frequency appears in the middle of the display with the frequency extending
to the left and right. The total frequency spread from the left through center to the right is
referred as the total SPAN.
(3) SF Start Frequency
The frequency displayed at the bottom left of the screen is the Start Frequency of the
SPAN.
(4) EF End Frequency
The frequency displayed on the right bottom of the screen is the End (Stop) Frequency of
the SPAN.
(5) RBW Resolution Band Width
Displays the current resolution in KHz. The resolution is selectable from 4 KHz, 32 KHz,
64 KHz, and 128 KHz. Greater detail is obtained by selecting 4 KHz, often with a lower
baseline wihile 128 KHz provides faster refresh rates.
(6) STEP Tuning Frequency Step
The tuning frequency step of the connected receiver is displayed in KHz. As an example,
when the span is set to 10 MHz, the frequency step will be 31.250 KHz.
(10 MHz / 320 steps on the X – axis = 31.250 KHz)
In the Step Resolution Mode, each step will be will be equal to the frequency step.
(7) OP. MODE Operating Mode
Three operating modes are available with the SDU5600.
• Spectrum : Spectrum Analyzer mode
• StepReso.: Step Resolution mode
• Channel : Channel Scope mode
(8) MARKER (9) Marker Information
The frequency and strength of signals may be read on the screen. Under the Marker
menu, the peak signal search is also available.
(9) Operation indicator
This green color indicator is provided to indicate the mode of data entry.
When it is displays a round green symbol, data entry can be made by the rotary dial
encoder.
When it is displays a square green symbol, data entry can be made by the numeric key
(0 ~ 9, decimal.)
9
(10) Receiver Information
This section indicates the status of the connected receiver with the following items:
Receive Frequency
Receive mode
Tuning Frequency Step
RF Attenuator on/off
(12) Signal Display (13) Signal level indicator
Received frequencies are plotted on the horizontal scale and signal strength on the
vertical scale, showing the overall effect of signal activity over the given frequency span.
The bottom horizontal line is the ‘baseline’. When signals are entered, they produce
vertical lines, and the higher the line, the stronger the signal. A 60 dB range is provided
by the scale which is divided into 10 dB increments.
5-2 Main Control Keys
Function key:
The Function key is located on the top right of the control keys. When the function key is
pressed followed by certain keys, they serve a secondary function. The secondary function
is printed above the respective key. While the function key is pressed, the reversed FUNC
yellow icon appears on the top left corner of the screen.
Numeric keys (0 ~ 9, decimal):
The numeric keys are used for entry of the start frequency, end (stop) frequency, input level
setting, trigger level setting, and so on.
While entering from the numeric keys, the CLR key may be used as a backspace key to
correct the entry. To delete all entry, press the CLR key while holding the FUNC key.
5-3 Default Mode
Pressing the CLR key repeatedly, will cause the SDU5600 to be set to the default mode with
the following settings:
Marker Mode: Frequency readout
Calculation mode: None
Waterfall : None
10
Note: The measuring modes (Spectrum Analyzer mode, Step Resolution Mode, Channel Scope
Mode), frequency span, tuning step, marker frequency, receive mode will not be affected
by pressing the CLR key repeatedly.
5-4 When the communication is disconnected from the receiver
If the communication between the SDU5600 and the receiver is disconnected, the SDU5600
will automatically try to recover it. However, if the communication cannot be recovered after
several retry, the SDU5600 will return to the default mode described above.
6 Settings
6-1 Configuration Menu
To enter the Configuration Menu, press the FUNC key and press the [4] key. Then the
following screen appears.
[RX] key : To select the receiver connected with the SDU5600, press the [RX] key that is defined
as the left of the Special function keys. The [RX] icon will be displayed in reverse
waiting for selection of the receiver. Rotate the main tuning dial to select the desired
receiver model number, and press the [ENT] key ([KHz] key or [MHz] key on the Main
Control Keys) to finish the selection.
[PLOT] key: Pressing the [PLOT] key that is defined as the center of the Special function keys
will toggle between the Plot mode or the Paint mode.
[Paint Mode] [Outline Mode]
[F-DIR] key: Pressing the [F-DIR] key that is defined as the right of the Special function keys
will toggle between the Reverse mode or the Normal mode.
When the [F-DIR] is set to the Reverse mode, it reverses the direction of display
processing to ensure that ‘ + ‘ and ‘ – ‘ are correctly implemented.
11
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