AOR SDU5600 Specifications Page 1

1®FFT spectrum display unitSDU5600OPERATING MANUALPROFESSIONAL SPECTRUMDISPLAY UNIT FOR USE WITHA COMPANION RADIO

101-2 Rear panelRF Input socket: The IF output (10.7 MHz / 45.05 MHz) from a suitable receiver such as theAR5000A should be connected to this BNC inp

112 Connection2-1 Connection with the power supplyWhere possible, use the supplied AC/DC power unit. Make sure the main switch of the SDU5600 isin

123 Preparations3-1 Configuration of the receiverThe SDU5600 is primarily designed to operate with the receiver at 9600bps. The companionreceiver’s b

134 BasicsThis section describes the front panel controls, detail of LCD display and introduces the method ofoperation employed by the SDU5600 prior

144-2 DisplayThis section explains what you can expect to see on the SDU5600’s monitor screenusing Spectrum Mode as a typical example. The screen wi

15(6) Step frequency - STEP: This value is displayed in kHz and indicates how wide one steprepresents out of the 320 steps across the X-axis. The exam

164-4 Clear (CLR) keyThe clear key (CLR) acts as back-space key to cancel each proceeding keyentry of numeric information (1 to 0, decimal-point) duri

175. Configuration of the SDU5600The SDU5600 is designed to configure a wide range of parameters for ease of operation.5-1-1 Configuration (CONF)This

185-1-2 Applicable receiversThis is a list of compatible receivers which are selectable from the SDU5600companion receiver menu:Receiver Selection me

195-2-1 Configuration of the ReceiverThis section explains how to configure thecompanion receiver itself. Note that this sectionwill not apply when

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205-2-2 Selecting the receive frequencyThis section will explain how to select and monitor the receive frequency of the companion receiver.It must be

21Channel scope modeThe previous page explains the receive frequency operation in the spectrum analyser mode and stepresolution mode. The channel scop

225-3 Setup of the monitoring modeThe SDU5600 is designed to provide 3 different monitoring modes such as the spectrum analysermode, step resolution m

235-4 Basic setup for each monitoring modeThis section will explain how each monitoring mode has to be set up.5-4-1 Spectrum analyser modeExample of

245-4-2 Step resolution modeExample of the screen is shown here, the parameters are:Centre frequency (CF) = 122.5MHzDisplay step = 25kHz Frequency sp

255-4-3 Channel scope modeExample of the screen is shown here, the parameters are:Start frequency = 118.0MHzStep frequency = 25kHzEnd frequency = 122

265-4-4 Common features shared by different monitoringmodesInput sensitivity (AMPLITUDE)This feature refers to the setup of the inputsensitivity leve

27Resolution band width (RBW)The SDU5600 provides fourselectable RBW bandwidthswhich are 4kHz, 32kHz, 64kHzand 128kHz.Press the RBW key to make theRBW

285-5 MarkerThe SDU5600 has a marker facility. Themarker is often used to obtain the readingof the frequency of interest. In addition tothe instantane

29Continuous peak detection (C-Peak)This facility is designed to continue the peak signal detection process one sweep after another.Press the C-Peak k

3IndexIndexSafety notices ... 5SDU5600 brief circuit d

305-6 Calculation facilityMaximum value hold (MAX)Press the FUNC +7 keys to activate thisfacility, the legend MAX will be displayedon the graticule se

315-7 Waterfall display facilityThe SDU5600 is equipped with a waterfall facility which can display the variation of signal strengths inconjunction wi

325-8 On/off of the displayed informationThe companion receiver parametersare usually displayed on the left side ofthe LCD graticule. The key sequen

336. Operating the SDU5600This section will provide examples of operating the SDU5600 using the AR5000A+3 as companionreceiver. Refer to pages 10 to

346-2 Monitor the VHF FM band in the spectrum analyser modeContinue to operate the SDU5600 from section 6-1 where the SDU5600 / AR5000A+3 has been s

356-3 Monitor the FM broadcast band in the stepresolution modeThe following information explains how to change the monitoring mode fromthe default of

366-4 Monitor the VHF air band in the channel scope mode.The VHF airband is allocated over the wide frequency band, It is therefore impossible to disp

376-5 Suitable applications of each monitoring modeA summary of the three monitoring modes and suitable applications is givenhere:Spectrum analyser m

387. Useful InformationThe SDU5600 has been designed to operate with a wide-band companion receiver such as theAR5000A. Therefore, there are some diff

398. SDU5600 Command ListThe SDU5600 can be operated via PC using the RS232 port.8-1 Communication parameter and connecting leadThe SDU5600 and a PC s

4Index5.5 Marker ... 285.6 Calculation facility .

408-3 Basic format of the commandEach command to be sent to the SDU5600 consists of 4 letters (upper case) inASCII code with appropriate parameters f

41Spectrum analysisCommand : WSCF Function : SET CENTER FREQUENCY Command category: WRITEParameter : Min- Max (in MHz)Example : WSCF79.5<CR><

42Command : WSTL Function : SET PEAK TRIGGER LEVEL Command category: WRITEParameter : -90 ~ 0Example : WSTL-80<CR><LF> Response: if correc

43Visual commandCommand : WVPM Function : SET PLOT MODE Command category: WRITEParameter : 1 ~ 2Example : WVPM2<CR><LF> Response: if corre

44User interfaceCommand : WUMD Function : SET RECEIVER MODE Command category: WRITEParameter : 1 ~ 15Example : WUMD1<CR><LF> Response: if

45Command : WUMC Function : SET MARKER FREQ. AS RECEIVE FREQ. Command category: WRITEParameter : N/AExample : WUMC<CR><LF> Response: i

46Command : WUBE Function : BEEP SETTING Command category: WRITEParameter : 1 ~ 7Example : WUBE6<CR><LF> Response: if correct: <SP>&

47Produces a ‘pair’ of data values comprising of frequency and its level at MHz order which is defined(sandwiched) by / /. In reality, there may be a

48Notes for programmersGenerally speaking the screen dump is preferable if graphic info (data) iswanted. On the other hand the array of frequency / le

499 SpecificationInput frequency 10.7MHz / 45.05MHz selectableMaximum frequency span 10MHzRBW 4kHz, 32kHz, 64kHz, 128kHzDynamic range 60dBInput imped

5Every effort has been made to make this manual correct and up to date. Due to continuousdevelopment of the product and by error or omission, anomali

50Notes:

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52AOR USA INC.,20655 S. Western Ave., Suite 112, Torrance, CA 90501 USATel: 310 787 8615 Fax: 310 787 [email protected] www.aorusa.com®0104post@a

6Circuit descriptionSDU5600 Brief circuit descriptionThe RF signal is fed by BNC socket into the SDU at a selected frequency of either 10.7MHz or 45.0

7Block diagram

8IntroductionThank you for purchasing the SDU5600 FFT spectrum display unit. AOR was thefirst company in the world to market a colour spectrum displa

91 Controls and DescriptionsControl and display of the SDU5600 is via the front panel with the rear panelproviding connections for the companion rece