AOR SDU5500 Manual Download Page 42

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(8) Specification

Model

SDU5500

Input Frequency

10.7 MHz

Sweep Width

1 kHz to 10 MHz (1 kHz step)

Frequency Accuracy

± 600 Hz

Resolution Bandwidth

5/30 kHz

Reference Level

-10, -40dBm

Maximum Input Level

-10dBm

Dynamic Range

50dBm min

Level Accuracy

Linearity within ± 2dB (within -40dB from reference level)

Band Ripple

± [email protected] MHz ± 5 MHz

Temperature

± 6dB(0°C~40°C)

Marker Mode

Direct read-out for frequency and level

Peak Continuous Peak Detect

Averaging (2 to 32 times sampling adjustment)

Plot Mode

Outline, Paint

Display Mode

SPECT / STRES / CHANL

Input Impedance

20k Ohm

Display Type

4.7" dot matrix STN LCD

Display resolution

304 x 128 dots

Screen Refresh

500mSec

Backup

From primary d.c. 12V supply

Dimensions

225 x 124 x 240mm (W.H.D.) approx. excluding projections

Weight

3.02kg (approx.)

Power requirements

Nominal 12V d.c. @ 1A

Supported companion radio

AR5000/3, AR3000A, IC-R7100, IC-R8500,

IC-R9000 and other radios with 10.7 MHz IF output

(non active band-scope)

Section 8

Summary of Contents for SDU5500

Page 1: ...mode 30 5 4 Channel scope mode 33 5 5 Passive bandscope operation 36 6 Special considerations 37 7 Computer control information 38 8 Specification 42 1 1 Introduction Thank you for purchasing the SDU...

Page 2: ...c regulated power supply 12 to 14V is acceptable which should be capable of supplying a minimum of 1A continuous ideally a 2A unit should be employed Note Never connect the SDU5500 directly to an a c...

Page 3: ...0dBm to 90dBm by using 2 selectable gain settings Highly accurate frequency management Through the DDS controlled Local Oscillator circuit Graphical display Wide variety of graphical display and stati...

Page 4: ...perations are defined by which menu is active on the LCD there are a total of seven menus numbered from 1 to 7 inclusive the menu number is ALWAYS displayed in the extreme lower left corner of the LCD...

Page 5: ...uggested that a ferrite clamp be fitted to the connecting cable In some market areas a suitable power supply may be provided Note Never connect the SDU5500 directly to an a c supply 2 RX CTR receiver...

Page 6: ...ption of LCD legends The LCD is effectively split into three main sections the top operating environment the middle spectrum trace and the bottom menu selection A total of 17 specific LCD areas are em...

Page 7: ...ht of the frequency The marker position is controlled using the spin wheel dial Bottom menu soft keys The bottom of the LCD is occupied by a number of soft keys arranged in seven menus The mix of keys...

Page 8: ...ile in Other operation The direction is automatically determined when using one of the supported radio receivers so the menu item is not available but selection is automatically displayed 7 PLOT Plot...

Page 9: ...al display graticule Received frequencies are plotted on the horizontal scale and signal strength on the vertical scale showing the over all effect of signal activity over the given frequency bandwidt...

Page 10: ...a or defining companion radio type addition sub menus are often displayed The soft keys offer the following facilities ESC ENT ESC Exit abort terminate ENT Enter accept data ESC BS ENT ESC Exit abort...

Page 11: ...1 Menu 1 PREV Move to previous menu RX Companion radio type PLOT Toggles between outline and paint CONT LCD contrast 0 to 160 around 50 is usually best B W Toggles between an Blue and White backgroun...

Page 12: ...mode the legend STEP will be displayed see the definition in menu 2 RBW Toggles the input filter Resolution Band Width between 30 kHz and 5 kHz FDIR When using Other companion radio the sweep directi...

Page 13: ...confirm operation While the buffer is loading the number of frames is indicated until the programmed number has been sampled after this point the specified number of frames will be averaged on an on g...

Page 14: ...Hz tuning and LCD step 5 x 304 1520 kHz span The following table presents commonly used step sizes 1 kHz 304 kHz 0 340 MHz 5 kHz 1520 kHz 1 520 MHz 6 25 kHz 1900 kHz 1 900 MHz 9 kHz 2736 kHz 2 736 MHz...

Page 15: ...guration of the AR5000 companion radio Connect a suitable power supply using the d c lead provided Ensure the correct polarity is observed the stripe signifies positive In certain market areas a suita...

Page 16: ...SDU5500 will attempt communication twice the first time the AR5000 will be switched on the second will establish communication Cold start Hot start The initial display which appears on the LCD after...

Page 17: ...s possible to configure the SDU5500 for Other companion radio and use the display unit as a band scope only The Centre Frequency will then always be displayed as 10 7 MHz but an OFFSET will be display...

Page 18: ...f the AR3000A an RS232 adapter from 9 pin to 25 pin will be required or procure make up a suitable lead see section 2 2 item 2 of this manual for pin out information Connect a 50 OHM BNC patch lead be...

Page 19: ...Either way shuttling from page to page is possible General operational notes Note The AR3000A will now be operated from the front panel of the SDU5500 receive mode frequency attenuator etc may be cont...

Page 20: ...RS232 lead between the receiver and RX CTR socket of the SDU5500 see section 2 2 item 2 of this manual for pin out information If using the IC R7100 or IC R9000 connect and power the optional ICOM CT1...

Page 21: ...NFM will be displayed Passive band scope Should you prefer to operate the companion radio totally from it s own front panel it is possible to configure the SDU5500 for Other companion radio and use t...

Page 22: ...z is employed the maximum span can be calculated as follows 10 7 7 3 3 4 3 4 x 2 6 8 10 6 8 3 2 MHz So the maximum span width would be 3 2 MHz 1 6 MHz Important note When reprogramming the centre freq...

Page 23: ...io type If you wish to change the plot mode between paint default and outline press the PLOT key as a toggle The changes are obvious and are confirmed by the PLOT legend If you wish to change the LCD...

Page 24: ...is automatically forced to equal the tuning step of the companion radio You cannot manually set the SPAN by necessity it has to be calculated by the SDU5500 STRES mode is confirmed by the legend OP MO...

Page 25: ...centre frequency when in spectrum SPECT or step resolution STRES modes press CF Input the required frequency using MHz format then press This becomes the centre frequency of the LCD and the frequency...

Page 26: ...this case use the FDIR key to toggle between Normal and Reverse At other times the key legend will be BLANK Select menu 5 selecting the marker 5 PREV MKR PEAK CPEAK MK CF NEXT To select a standard ma...

Page 27: ...t period of time Once activated the buffer size must be allocated between 2 and 32 frames inclusive A reverse legend AVR is displayed on the LCD to confirm operation While the buffer is loading the nu...

Page 28: ...onnections and the RS232 parameters of the AR5000 the SDU5500 may try two or three times to connect to the AR5000 Other items such as PLOT CONT B W can be ignored unless necessary The frequency sweep...

Page 29: ...elect 95 MHz followed by The LCD legend CF 95 00000MHz confirms entry Push the SPAN key and enter the widest span width of 10000kHz 10 MHz using kHz format Leave the RBW set to 30 kHz Ensure that the...

Page 30: ...g 100 00000 MHz 5 3 Step resolution mode In step resolution mode ONLY the wanted steps are checked for activity rather than the whole band this is particularly useful when you know the tuning steps us...

Page 31: ...this example switch the attenuator off Push the MODE key to select receive mode in this example WFM followed by Push STEP to enter the tuning step size in kHz format in this example of 100 kHz follow...

Page 32: ...the LCD will be employed as only wanted frequencies are sampled the refresh rate will be faster than spectrum analyser mode Active signals will populate the LCD The CF and Marker frequencies are curre...

Page 33: ...frequency up by half the span width in this example the centre frequency moves to 100 00000 MHz 5 4 Channel scope mode In channel scope mode you may view a defined bandwidth up to a maximum span of 5...

Page 34: ...re automatically transferred from the AR5000 to the SDU5500 however re check the attenuator setting Press ATT to toggle the attenuator status in this example switch the attenuator off Push the MODE ke...

Page 35: ...NCY is displayed The receiver will monitor RF which is default to the lower frequency of 120 MHz in this example The span is automatically set by the SDU5500 with the spectrum trace displayed either s...

Page 36: ...al is rotated the OFFSET FROM CENTRE will become more positive up to 5000 00 kHz or more negative to a minimum of 5000 00 kHz minus one LCD step with a 25 kHz LCD step and 10000 kHz span this will be...

Page 37: ...n in the wider frequency range This is particularly noticeable when a wide span is selected such as 10MHz the extreme edge of the screen may show a reduced signal level by as much as 10dB when AR3000A...

Page 38: ...8 8 5 5 5 7 GND The SDU5500 RS232 specification is as follows Data bits 8 Stop bits 2 Parity None Baud rate 9600bps Flow control X flow Command list Commands are divided into four categories S Spectru...

Page 39: ...A RSCF CR SCF84 3 SPAN SET W S SP Min Max WSSP1000 CR or SPAN READ R S SP N A RSSP CR SSP1000 RBW SET W S BW 1 5kHz 2 30kHz WSBW2 CR or RBW READ R S BW N A RSBW CR SBW2 GAIN SET W S GN 1 LOW 2 HIGH WS...

Page 40: ...VIM CR VIM FOLLOWED BY IMAGE AND U User interface Function Read Write Command category Type of command Parameter Example Response RECEIVE MODE SET W U MD 1 WFM WUMD3 CR or 2 NFM 3 AM 4 LSB 5 USB 6 CW...

Page 41: ...00000 100 00 84 0000 EMIT BEEP W U BE 1 LOW 2 HIGH WUBE1 CR or MK RF CHANL MODE W U MR N A WUMR CR or CH MODE MKER SET W U RF FREQ IN MHz WURF84 3 CR or CH MODE MKER READ R U RF N A RURF CR URF84 300...

Page 42: ...or frequency and level Peak Detect Continuous Peak Detect Averaging 2 to 32 times sampling adjustment Plot Mode Outline Paint Display Mode SPECT STRES CHANL Input Impedance 20k Ohm Display Type 4 7 do...

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