AOR SDU5600 Spectrum Display Unit Operating Manual

11
2  Connection
2-1  Connection with the power supply
Where possible, use the supplied AC/DC power unit.  Make sure the main switch of the SDU5600 is
in the OFF position before connecting the power supply.
2-2  Connection with the receiver
This hand book is compiled mainly referring to the AR5000A series receiver as the principal
companion receiver.  Any reference to other types of receiver will be made separately when and
where necessary.
Make sure that both the SDU5600 and AR5000A are switched off....

12
3  Preparations
3-1 Configuration of the receiver
The SDU5600 is primarily designed to operate with the receiver at 9600bps. The companion
receiver’s baud rate has to be configured to the same rate.  Some type of receivers may require
additional modifications or interface, etc, which are explained as follows:-
AR5000 series:  Configure the selection of external IF output and baud rate as per the following
table (refer to pages 29 & 30 sections 6-18 & 6-19 of AR5000 English language operating manual):...

13
4  Basics
This section describes the front panel controls, detail of LCD display and introduces the method of
operation employed by the SDU5600 prior to further configurations and monitoring operations. It is
advisable that you read this section carefully before proceeding to explore the full capability of the
SDU5600.
4-1  Control
Power switch:  Press once to latch the switch in, switching on the SDU5600.  To
switch off the SDU5600, press the switch a second time, the switch latches outward.
When...

14
4-2  Display
This section explains what you can expect to see on the SDU5600’s monitor screen
using Spectrum Mode as a typical example.  The screen will appear differently when
switched to other operating modes.
(1) Centre frequency - CF: The centre frequency reading is shown in MHz, providing
a minimum resolution of up to 10Hz.
(2) Frequency span - SPAN: The centre frequency appears in the middle of the display
with frequency extending to the left and right.  The total frequency spread from the left...

15
(6) Step frequency - STEP: This value is displayed in kHz and indicates how wide one step
represents out of the 320 steps across the X-axis. The example of page 14 shows 31.250kHz as one
step which is obtained by taking the SPAN of 10MHz and dividing it by 320, the result is 31.250kHz -
since the X-axis is 10MHz wide in this example. In the Step resolution mode, it is possible to specify
the frequency bandwidth to be ‘one step’ rather than an often seemingly arbitrary value.
(7) Operation mode -...

16
4-4 Clear (CLR) key
The clear key (CLR) acts as back-space key to cancel each proceeding key
entry of numeric information (1 to 0, decimal-point) during entry of the start
/end frequency, entry of input sensitivity / trigger level or the marker and
numeration in the calculation mode. Pressing the clear key with no proceeding
key entry will abort the sequence. Pressing A.CLR (FUNC + CLR) will clear all
proceeding numeric entries and end the sequence.
Pressing the clear key (CLR) repeatedly in the...

17
5. Configuration of the SDU5600
The SDU5600 is designed to configure a wide range of parameters for ease of operation.
5-1-1 Configuration (CONF)
This section explains how to configure the operating environment under which the SDU5600 is used.
Selection of the receiver, Plotting pattern and Frequency direction are to be configured. Press
the FUNC key followed by the 4 (CONF) key to assign the soft keys as the following diagram.
For selection of the receiver press the RX key.
The box where the type of...

18
5-1-2  Applicable receivers
This is a list of compatible receivers which are selectable from the SDU5600
companion receiver menu:
Receiver Selection menu Applicable receiver Remarks
AR5000 AR5000/+3 Use of EXT-IF port
AR5000A/+3
AR3000A AR3000A 10.7MHz IF mods required
Use of 4800bps
AR8600(10M) AR8600MK2 IF mods required if used
in all modes
AR8600(45M) AR8600MK2 45MHz IF mods
(TV mods) required
AR8200 AR8200MK3 45MHz IF mods
(TV mods) required
AR-ONE AR-ONE
RFU5600 RFU5600 Built-in RF adaptor...

19
5-2-1  Configuration of  the Receiver
This section explains how to configure the
companion receiver itself.  Note that this section
will not apply when Other(10M) or Other(45M)
has been selected in the receiver selection
menu, or communication has not been correctly
established between the SDU5600 and companion
receiver.
On the right of the main keypad there are three
control keys which directly affect the operation of
the companion receiver, these are MODE (receive
mode), STEP (tuning step) and AT T...

20
5-2-2  Selecting the receive frequency
This section will explain how to select and monitor the receive frequency of the companion receiver.
It must be noted that the SDU5600 employs the following principle:
Spectrum / Step Resolution - Receive Frequency (RX.FREQ) = Centre Frequency (CF)
Method 1: While the SDU5600 is in SPECTRUM MODE (default when first switched on) or STEP
RESOLUTION MODE, use the ten keys to directly enter the desired centre frequency, followed by
the kHz or MHz key to complete the...