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Digital Storage Oscilloscope
Operation Manual

Содержание OS-3020D

Страница 1: ...Oscilloscope Digital Storage Oscilloscope Operation Manual ...

Страница 2: ... ez Digital Co Ltd 05 30200 400 600 fi J V Q l 0 11 Digital Storage Oscilloscope Operation Manual ...

Страница 3: ...0 OSC ILLOSCO PE 05 30200 05 30400 05 30600 Aug 18 1995 Conforms to the following product specifications Certified by TUV Rhein lan d Safety EMC Supplementary Information EN 61010 1 1993 l EC 1010 1 1990 A1 1992 modified EN 50081 1 1992 EN 50082 1 1992 The product herewith complies with the requirement s of the Low Voltage Directive 73 23 EEC and the EMC Direct ive 89 336 EEC Bucheon Gyeonggi Loca...

Страница 4: ...d service personnel Caution and warning statements CAUTION Is used to indicate correct operating or maintenance procedures in order to prevent damage to or destruction of the equipment or other property WARNING Calls attention to a potential danger that reqwres correct procedures or practices in order to prevent personal injury Symbols Cautionj refer to accompanying documents and Warning Protectiv...

Страница 5: ...fully maintain the precision and reliability of the product use it within the range of standa rd setting temperature W C 35 C hu midity 45 85 2 After turning on power please allow a pre heating period of as long as some 15 minutes before use J This equipment should be used with a triple line power cord for safety 4 For quality imp rovement the exterior design and specifications of the product can ...

Страница 6: ...ce center or sales outlet free of charge We charge customers for repa irs after the one year warranty period has been expired Provided that against any failure resulted from the user s negligence na tural disaster or accident we cha rge you for repairs regardless of the warran ty period For more professio nal repair service be sure to contact our service center or sales outlet ...

Страница 7: ... 1 3 Sweep and trigger blocks 2 1 4 Read out 2 1 5 Storage block 2 1 6 Miscellaneous featu re 2 2 Basic func tions and measurement 2 2 1 Connection of measuring signals 2 2 2 Adj ustment during initial operation 2 2 3 Data display I Real time mode display 2 Storage mode display 2 2 4 Real time mode measurement Single trace measurement 2 Dual trace measurement 3 Trigger selection II I I 13 17 18 14...

Страница 8: ...ve mode 7 Save memory display RECALL 8 X Y plot output 9 Horizontal magnification display 10 Interpolation I I ALT MAG 12 GO NOGO 13 Menu mode 14 X Y measurement 2 3 Measurement applications 2 3 1 Ampl itude measurements 2 3 2 Time interval measurements 2 3 3 Frequency meas urements 2 3 4 Ph ase difference measurements 2 3 5 Rise time measurement 44 45 46 49 49 49 51 52 53 53 53 54 54 57 58 59 59 ...

Страница 9: ... pin arrangement and signal description 4 4 Connection 4 5 Operation and command 4 6 Transmission reception data format 4 7 Separating character 4 8 Abnormal operation handling RO 80 80 R5 85 90 90 90 91 9 91 91 93 94 96 102 102 4 9 RS 232C interface cable connection and instrument operation 102 4 10 Generation of data transmi ssion re ception program 4 11 Key cau se of abnormal data transmission ...

Страница 10: ...5 User mainten ance guide J J I 5 1 Cleaning J II 5 2 Calibration J I I 6 OS 3IXX DSRS diugrum J 12 6 1 External views J 12 6 2 Block diagram II ...

Страница 11: ...y band width ND converter installed on each channel samples the input signal at the max rate of 20MHz samples sec Any signal with perfect rcpcatedness can be stored Max 20 60 MHz This product can be used as an ordinary real time oscilloscope with frequency range between 20 and 60MHz 2 Large storage capacity Each channel has 2kW memory Since it can indicate the waveform composed of IkW data it meas...

Страница 12: ...gital plotter It also interprets and reco rds the stored data 6 CRT and cursor readout It can pro mptly perform the operation and measurement using both the CRT readout function to display the set info rmation of panel and the cursor readout function to display the voltage difference 8 V time difference 8 T and frequency difference l 8 T between two cursors 12 ...

Страница 13: ... DCto40MHz normal DCto60MHznormal DC coupled DCto 7MHz magnified DCto 7MHz magnified DCto IOMHzmagnified AC coupled 10Hzto20MHz normal 10Hz to40MHz normal 10Hz 1060 MHznormal 10Hz 10 7MHz magnified 10Hz to 7MHz magnified 10Hz 10IOMHzmagnified 2 Modes CHI CH2 ADD DUAL CHI CH2 ADD DUAL CHOP TImeJdiv switch 0 25to 5m CHOP Tune div switch ALT TimcJdiv switch 2ms1 0 O 211s 0 25to 5ms ALT TimcJdiv switc...

Страница 14: ... Trigger System I Modes AlITO NORM lV V lV H 2 Source CHI CHl LINE EXT 3 Coupling AC 4 Slope or 5 Sensitivity and 2OHz 1M Hz lM Hz 1OMHz 2OHz 1M Hz 2M Hz 40MHz 2OHz 1M Hz lM llz ffiMliz Frequency NT U Sdiv l Sdiv INT O 5div 1 5div INT Il Sdiv l Sdiv AlITO NORM EXT O 2Vo o O 8Vo o EXT O 2Vo o O 8Vo o EXT O 2Vo o O 8Vo o lV V lV H at least I div or l OVp p Composite Sync 6 External triag fMo hm in p...

Страница 15: ...aveform and its ma gnified waveform GO NOGO judgement and comparing of acquisition signal 10 Data save Up to IwO stora data can be saved Saved data can reca lled to tnc display whenever reauired I I Pre trigger Var iable 0 04 div step 12 Plotter plotter output of the CRT d layed inform ation to an IJP GL plotter via the RS 232C inte ace 1 Il L1 1outpu t RS 232C 14 Magnified displa y x 0 by Tirne d...

Страница 16: ...r rated operation 2 t a ambient operating temperature at to 4Ot 3tF to 104 F 3 Ma storage tcmerurure 2Ot to 70t 4 F to ISS F 4 Humidity mnge for rated operation 45 to 85 R11 5 Max ambient operating humidity 35 to 85 RH Safety Er 61010 1 overvoltage CAT IT degree of poilulion 2 Approval TOVI B tC lnterferdnce EN50081 1 Susceptab hty EN50082 1 IEC80 1 2 3 4 cCautiono Sourccs like small hand held rad...

Страница 17: ...nel Select the arrow mark position of the switch from Table I I Slide the arrow mark to the desired position and plug it in Caution Th is product has the ground chassis 3 wire power cord is used Check whether any other equipment connecting with this product requires the transformer before use If so do not connect the DC AC or the hot chassis equipment if no transformer is available Do not directly...

Страница 18: ...could seriously damage the instrument 5 Do not use this instrument where it is subject to severe vibration or strong wind 6 Do not place heavy objects on the case nor block the ventilation holes 7 Do not use this oscilloscope in strong magnetic fields such as near motors 8 Do not insert wires tools etc through the ventilation holes 9 Do not leave a hot soldering iron near the instrument 10 Do not ...

Страница 19: ...2 Operating Instructions A FRONT PANEL ITEMS 35 20 33 WAItN N _ C ToO __ s _ 4 __ 7 8 B REAR PANEL ITEMS Fig 2 1 05 3020D front rear views 19 ...

Страница 20: ... g o O U I t I I C H 1 rJ 0 I II I _ n _A A I 6 0 i o o iB J _ _ 0 4 C ClCJc l _ 00 D O 0 0 0 0 1 II C _ 0 c CD 0 9 I I c il h c I C HI Z CH2 1 lIS lA _ i h U _ _ I j1Q I J R _ J oJ IZ t 0 c J CJ CJ CJ 0 _ aoro __ CJ CJ CJ ca I i ll 41 I I _ I 5l 0 CD 8 9 I I I _ I I Hl l Hl lt 10 05 300005R5 Front Views 20 05 30200 05 30400 05 30600 ...

Страница 21: ...ghest definition It adjusts the brightness of scale and useful when observation is made in a dark place or when taking the photograph of screen Selection is permissible to make the voltage suitable for operating power Connection and removal of the AC power cord is easy when using 9 CHI X IN CONNECTOR Connects input signal to CH1 vertical amplifier or becomes a X axis signal during X Y operation CA...

Страница 22: ...e and those shall be used by having them placed at the appropriate position so as to make waveform measurement easy As being the minute adjustor being used when having vertical deflection sensitivity continuously varied if they are fully rotated counterclockwise the attenuation ratio becom es less than 1 2 5 of indicated value When you pull out the knob vertical axis sensitivity becomes x5 times A...

Страница 23: ...eps the CRT at the main A tirnebase rate when pressed A NT pushbutton sweeps the CRT at the main A tirncbase rate when pressed and the B tirnebase intensifies a section of the tracets In case of OS 30600 pres A and B simuhanously The sector whose brightness is modulated is disp layed on the screen in a magnified form BTRIG D the delay sweep is triggered by the first trigger pulse pushbutton provid...

Страница 24: ...uously from the calibrated position PULL XIO MAG When you make the part to be magnified align with the central scale of the vertical axis by adjusting the position of the horizontal axis and when you pull the X10 MAG switch the waveform the left and the right of which are magnified centering around the middle appears At this time sweep time becomes 1 10 of the indicated value of TIME ON 26J HORIZO...

Страница 25: ...ggering is desired to be done in a low frequency approx 25Hz or less Being used for measuring a composite video signal in a frame unit This one is used for measuring a composite vedeo signal in a scanning line unit This can select the convenient portion of the trigger source It can select the CH I as the trigger source when there is a signal on CH l This can select the CH2 as the trigger source wh...

Страница 26: ...lockwise the trigger point moves toward the positive maximum value and when rotating it counterclockwise it moves toward negative maximum value Being used for selecting trigger slope of the initial sweep When the switch is pressed this switch selects positive slope and when pulled the switch indicates negative slope Being used for connecting external trigger signals to trigger circuits CAUTION To ...

Страница 27: ...s the normal realtime oscilloscope function All the switches do not operate Pressing this switch once lights up LED enters into storage mode and all the switches operate Pressing this switch once more in storage mode enters into REAL TIME mode In storage mode LED blinks asynchronously along with sampling Press this switch to change average interpolation prob e state roll and smoothing ON OFF Whene...

Страница 28: ...ch outputs the display waveform on the X Y plotter Pressing switch transmitts data and lights up LED This switch operates only in the HOLD state HOLD LED lights up Thi s switch is used to display the stored waveform on CRT again Pressing this switch lights up the LED When LED goes out after pressing this switch continuously it releases 33 DIP SWITCH and RS 232C CONNECTOR DIP SWITCH Sets the PLOT o...

Страница 29: ...e the wire is not shielded the measurement may often be difficult whe n mea suring low level signals As it is hard to have the wire connected to the connector of oscilloscope using a binding adapter for BNC is desirable 2 Method using coaxial cable This method is the most prevailing one which is widely used when an output connector is attached to the measureing object As the shield coating of coax...

Страница 30: ...y know the source impedance the highest frequency involved and the capacitance of the cable etc If any of these factors are unknown use a 10 X probe 2 2 2 Adjustment during initial operation measurement OFF released Fully counterclockwise Mid AC 20mV In the middle and pushed in Fully clockwise and pushed in CH I 0 5111s Fully clockwise and pushed in Mid AUTO CH I Mid NORM max CCW to the power conn...

Страница 31: ...t unattended for any period of time 4 Adj ust the FOCUS control 4 to make it produce the finest and distinctest definition 5 Make sure tha t the traces align with horizontal graticule lines by turning the CH I vertical POSITION control 17J Where the traces do not align with horizontal graticule lines then make them align with each other by adj usting the TRACE ROTATION SJ 6 Turn the HORIZONTAL POS...

Страница 32: ...ACITANCE CORRECTION TR MM R HOOK COVl R GROU ND CLIP I PROBl R TRA l ABl HOO k TIP CQR UC TlY C jP NSAH O ill UNDER COMP HSATl D tllH H CTS Of PROO COMPENSATION Fig 2 6 Probe compensation jVl R CQMP NSATfO ...

Страница 33: ...ale factor ADD CH2 Scale factor A sweep B sweep X V Scale factor CD CH I and CH2 scale factor display 1 V DIV 1 r 1 rOX r r r0 r m r 1 L __ L __ L __ L __ L _ _ L __ L __J PROBE display PIOX lOX PROBE PIX IX PROBE BLANK CAL UNCAL X5MAG In ADD mode is displayed between scale factors of CHI and CH2 33 ...

Страница 34: ... Cursor measurement disp lay The measured value between cursors is displayed I Measured value I r r 1 I 0 V I _ L __ L_ 1 I t V CH I CH2 AD D DUAL o T Time differe nce between two cursors for A TIME DIY 1 t T Reciprocal of t T t V mv V div 6 T ps ms s div 1 t T MHz kH z Hz mHz div is displayed in the following cases The measurement value of the channel selected by VERTICAL MODE switch is not in CA...

Страница 35: ...he instrument stores the setting condition associated with sweep factor and waveform These valves are always displayed when waveform is displayed CHI CH2 and A sweep factors When CH I and CH2 waveforms are displayed the sweep factor corresponding to waveform is displayed Pre trigger and cursor measurement The sweep waveform corresponding to the function selected using cursor selector switch and ve...

Страница 36: ... 0 5 ID S L _ _ l _ _ L __ L _ _ L _ J BLANK n J XI CAL No horizontal magnification No interpolation J Sine wave interpolation XIO MAG Linear interpolation Horizontal magnification In X Y operation A sweep sweep factor disappears and x y is displayed Pre trigger selling display Trigger point of display waveform against the trigger point of display waveform Example D Refer to 2 2 5 for the display ...

Страница 37: ...n two cursors for ADD sweep waveform lJ T Time difference between two cursors for A sweep waveform 1 lJ T Reciprocal of lJ T 1 lJ T MHz kHz mHz div div is displayed in the following case The measurement value of the channel selected by VERTICAL MODE switch is not in CAL state A sweep VAR mode is not in CAL mode at the equivalent sampling mode x v mode In HOLD state TIMEIDIV switch exceeds the meas...

Страница 38: ...S POSrnON 17 18J Mid rotation and pushed in VARIABLE IS 16J Fully CW and pushed in V MODE 19 CHI c m HORlZ DISPLAY 21J A A T IME VARIABLE 251 Fully CW and pushed TRIGGER MODE 27J AUTO TRlG SOURCE 28 CHI Cm TRlG LEVEL 30 Mid rotation HOLD OFF 29J NORM positioning it at the end of CCW Position the trace on the center of CRT by adjusting the Verti cal POSmON control Connect the signal by means of the...

Страница 39: ...v the value is 10 and when mag nified by XIO in less than I ps the value is S j When measurin g DC or very low frequ ency the AC coupling results in the attenuation of signal or distortion so that use the instrument after having the AC OC GNO switch 11 12J positioned to DC Ca ution Where the waveform of very low AC level is loaded on the high DC voltage it may not appear on DC position The NORM of...

Страница 40: ...triggering with TR IGG ER SOURC E switch 2s1 S M IIH 1 1 1 hI1 ISVt 1 1 a Co mpositive video signa l I b TV V coupling I I 1 m m 1 III l1T II I I Ie c TV H coupling 1 r_ r_TI I r I 1 I f M t i I I I I d SYNC polarity Fig 2 7 TV sinc signal separation 40 1Il 1 1 AlI T r _ u 1CJ o ...

Страница 41: ...igger mode CRT beam appears only when the signal is synchronized This trigger MODE docs not cause the trace to appear in case that there is no signal that the synchroniza tion adjusting has been done improperly and that the ven ieal POSITION has been incorrectly adj usted or that the YOLT DIY switch has been improperly positioned TV V TV H trigger mode The cleanly synchronized waveform can be obse...

Страница 42: ...ig 2 8 Depressed switch represents the rise starting point and released switch indicates the fallstarting point Q Trigger level selection Thi s position represents the starting point of the signal which is input with either CH I or CH2 The signal starting point varies as shown on Fig 2 9 by turning the TRIGGER LEVEL control 30 to the left and right 42 ...

Страница 43: ...r I STA A N Al POSITty SlOl t AT Yl C lI a Sawtooth waveform j r I f I IS lAIlTtl C I ATI Sl 1 I S A l t AT POSlflY Sl cP STA8l Il ISll C I Lt Pf POflT I I H J b Square waveform Fig 2 8 Trigger point selection NO 0 llY1l Start Poi nt Fig 2 9 Trigger level selection ...

Страница 44: ...ng click stopped Where the amplitude difference of the two signals is considerably large reduce both VOLTS DIY switches simultaneously as much as to make the amplitude of the larger signal be within the screen displ ay 3 Select the TRIGGER switch having the biggest signal 4 Set the V MODE switch 19 to ADD position Then the algebraic sum of the CH I and CH2 signals appea rs as a signal waveform At ...

Страница 45: ...sed in X V operation and the deflections of both the vertical and horizontal directions are all operated via external signals Trigger switches and their associated controls and connectors are inoperative in the X V mode Proceed with the X V operation as follows I Tum the TIMElDIY switch 22 fully clockwise to its X V position Caution When appearing as the spot without being swepts the spot would da...

Страница 46: ...ment for whatever vertical mode you desire B Make sure the B TRIG D pushbutton is out C Press the A INT HORIZ DISPLAY pushbutton A section of the tracevs will brighten Note Th e intensified portion will be quite smaIl if there is a large difference between the setting of the A and B TIME DN switches D Tum the B TIME DN switch 23J until the intensified portion of the trace widens to an amount equal...

Страница 47: ...ill be that plus the additional time until the next available trigger The result is that actual delay time is variable only with step resolution in increments of the interval betwen triggers Th e maximum magnification possible by this technique is several thousand times CRT brightness being the limiting factor For triggered B sweep proceed as follows A Set up the scope for basic delayed sweep as d...

Страница 48: ...a A TIM EBASE DISPLAY INTENSIFIED PORTlCN Of A SWH P b A IN TENS IFIED BY B DISPLAY C B TIME BASE DISPLAY f l T PH 1 7 1 I Fig 2 10 Sweep magnification by B time axis ...

Страница 49: ...t time If sweep speed is low therefore waveform is not displayed on the CRT immediately upon adjusting the adjustor on the front side When TIME DIV fadjustor is between 51 S div and 0 2s div the intermittent and repeated waveforms may be stored Pressing HOLD switch in NORMAL STORAGE mode stops the correction operation by CRT display and the CRT display stops 2 Equivalent sampling mode EQUIV When T...

Страница 50: ...UIV mode It takes longer than 5 seconds to store input signal below 1kHz for 200Hz input The noise may be included when storing low frequency signal It is desirous to use spherical wave with rising time shorter than O 3 s or sine wave with frequency higher than lMHz Note Sampling rate in storage mode When there is no horizontal magnification in storage mode total horizontal scale of IOdiv on CRT i...

Страница 51: ...n a half the sample clock frequency is added in the sweep range when measuring signal in storage mode NORM AVG ALIASING occurs In this case the waveform obtained by sample clock frequency from the input signal frequency is displayed This waveform may be regarded as correct If ALIASIANG is doubtful convert into REAL TIME mode to check whether it is same as the operating mode display being measured ...

Страница 52: ...signal c Press SINGLE switch Pressing SINGLE switch converts into input signal trigger standby state When trigger signal is applied the SINGLE sampling is carried out The SINGLE switch LED continues to light up when the input signal trigger is not detected If trigger signal is applied or trigger mode is set to AUTO SINGLE switch LED goes out and automatically converts into HOLD state Hold LED ligh...

Страница 53: ...antaneously it means that waveform is stored When vertical mode switch is set to CHI CH2 or ADD waveform is stored storage memory A and B in tum whenever pressing SAVE switch When vertical mode switch is set to DUAL CH I waveform is stored in storage memory A while CH2 waveform is stored in storage memory B 7 Storage memory display RECALL The details stored in storage memory in HOLD mode are displ...

Страница 54: ...O MAG switch 2 HOLD waveform magnification by TIME DIV I XIO MAG Displayed waveform magnified ten times from the center of origi nal waveform in the tube surface storage The waveform which is slored in save memory can not be magnified Gi Pulling XIO MAG switch displays ldiv sector magnified ten times from the center of original waveform lIE If it is displayed on both sides of CH I and CH2 the Idiv...

Страница 55: ...makes it possible to continuously magnify and display up to ten times the TIME DIY switch set value Magnificati on is done from the center of original waveform as in I Example of magnification operation Gil Display the original waveform and set HOLD mode j Turn TIME DIV switch clockwise to change TIME DIV to rapid set value When TIME DIY set value is cha nged on the tube surface waveform is magnif...

Страница 56: ...n ification This operation performs horizontal magnification up to ten times Therefore TIME OlV switch can set a tenth the origina l waveform But TIME OIV display is not cha nged and waveform is not magnified any more even if you turns TIME OIV clockwise beyond that extent When magnification is displayed the magnification rate is grad ually reduced and returned to the original waveform by selling ...

Страница 57: ...s symbol on the sweep sweep factor on the bottom right of tube surface Selecting linear sine interpolations makes pul se sine wave of input signal clearly displayed on the tube j Indicate the original waveform and set the HOLD mode 2 Carry out horizontal magnification display using XIO MAG or TIME DIY switch and have the waveform to be interpolated displayed on the tub e surface Refer to 9 horizon...

Страница 58: ...fORM CHI original waveform CHI magnified waveform CII2 CIJ2WAVEFORM CHZ original waveform I CH2magnified waveform DUAL DUAL CHl CH2l DUAL CIII 12 originalwaveform WAVEFORM I DUAL ClII CH2 magnified waveform ADD ADD CHl CIJ2 ADD ClI l C1I2 original waveform WAVEF ORM I ADD CIIt CIJ2 magnified waveform EX ALT MAG OPERATION CII I I ScI the vertical mode 10 CH I first and displayed the waveform of CH ...

Страница 59: ... by limited conuitions please confirm the operating condition The mode AVERAGI NG ROLL MAG DUAL SING LE RECALL other than operating 2 Use MENU switch set GO NOGO mode 3 Selet the condition to issue GO NOGO from the following two option D Wh en a waveform is out of the judgement domain is only comparing 4 Usc MENU selector switch set GO NOGO judgement domain pressing MENU selec tor switch changes m...

Страница 60: ...u selector switch it is possible to select XIO XI mode Smoothing selector mode SMTH When MENU LED lights up and tSMTH is displayed on the top right of CRT SMOOTHING turns ON OFF rs r r r r r r 0 r r F 1 l _ _ L _ _ L __ l _ _ L _ _ L __ l _ _ l __ l _ J IT OFF lSMOOTHING ON SMOOTHING In OFF state storage waveform is displayed in dots Turning it ON the dots are connected to display smooth waveform ...

Страница 61: ...r switch changes NORM from 4 Ibm 256 The average waveform is displayed after data is obtained for the set sweep number The average of next data is ohtained in the number same as the number of sweeps and the average waveform display is corrected Thus it is possible to detect non repetitive signal under the influence by non trigger noise The number of averaging operations is same as the set average ...

Страница 62: ...or switch Pressing this switch changes mode in the following sequence LIN SIN OFF LIN Interpolation is 10 interpolate the magnified waveform data when magnifying the display waveform horizontally excluding storage waveform In OFF position waveform is magnified horizontally In SIN position the initial waveform becomes similar 10 sine wave If the square wave is connected in this state considerable r...

Страница 63: ...tor mode AMAG When MENU LED lights up and AMAG is displayed on the top right of CRT you can select ALT MAG T OFF ALT MAG OFF ON ALT MAG ON ON OFF can be selected using MENU selector switch GO NOGO selector mode G No When MENU LED lights up and G NO is displayed on the top right of CRT you can select GO NOGO I r _ T XH COMPARE OH HOLD XH OH can beselected using MENU selector switch 2 IF XH mode or ...

Страница 64: ...g is displayed as follows t mOOthing on BLANK Smoothing off SA SAVE Memory A SB SAVE Memory B BLANK NoIaverage AV4 4times of average A V 16 16times of average AV64 641imes of average AV256 256times of average EQUIV EQUlVALENT SAMPLING 0 2J o div 60MHLO IJ Jdiv to2 1div NORM NORMAL SAMPLING 5 1div to0 151div ROLL ROLL MODE 0 5s1divto0251div ...

Страница 65: ...R 2 Pressing HOLD switch in EQUIV NORM or ROLL mode enters into HOLD mode Then sampling operation stops while waveform display data arc displayed continuously 3 Turn A TIMEIDIV switch 22J completely clockwise to X V position OS 3 D Set horizontal mode lector switch to X y Note If it is displayed in dots and not deflected the fluorescent surface of CRT may be damaged If the brightness is to high lo...

Страница 66: ...k 1 1 measurement and instantaneous peak to peak 1 1 measurement Instantaneous voltage measurement is to measure the voltage of each point on the waveform from a ground reference In order for you to perform the aforementioned measurements exactl y make sure that the VARIABLE controls are fully turned clockwise J Peak to Peak 1 1 Voltage Measurement 1 Set up the vertical mode switches of the oscill...

Страница 67: ...ult At this time perform the measurement with setting the AC DC GND switches to DC Wh en the measurement of AC com ponent is needed For any instrument equipped with readout function movin cursor to the top and bottom of waveform displays the poten tial difference V on the screen 2 Instantaneous Voltage Measurement 1 Set up the vertical mode switch of the oscilloscope in the same manner as that set...

Страница 68: ...cal graticulc lin e on the C RT screen dis play by movi ng the Hori zontal POSITION control lZo Since the central vertical gra tieulc is gra duated in scales at every 0 2 division the mea surement is easy to perform In the example cited for Fig 2 7 if the VOLTS OIV switch is positioned at 0 5V the value becomes 2 5V 5 0 divX0 5V 2 5V 7 If the X5 magnified movement is performed divide the value mea...

Страница 69: ...l I I I i I L l i i 1 I 1 I I 1 I I I J I i i 1 T H o Fig 2 16 PEAK TO PEAK VOLTAGE MEASUREMENT I5 DIV l I 11 I I I I I I REFERENCE LINE VE RTIC AL DISTANCE Fig 2 17 INSTANTANEOUS VOLTAGE MEASUREMENTS 69 ...

Страница 70: ...ame manner as that described in 2 2 4 Set the TIM E DIV switch n in such a manner as to make the aveforrn appear on CRT screen display as large as possible Tum the TIM E VARIABLE control 25J fully clockwise until being clickstopped Otherwise you so do the measured value will be inaccurate thus requiring you to exercise due care 3 Adjust the Vertical POSITION controls 17 and 18 and make the wavefor...

Страница 71: ...me between A and B In Fig 2 IS it is 1 5 division so that it becomes 1 5divX IOms 15ms However in this example as an 1 5 division is a rather short distance should you set the TIME ON switch to 2ms it would be seen magnified as shown on Fig 2 ISb Then though the pulse is short the measureme nt accuracy becomes increasingly better Where it is still displayed small even with adjusting the TIME DN sw...

Страница 72: ...cilloscope can directly measure the modulated waveform that can hardly be measured by means of a frequency counter or the waveform bearing a lot of noise Frequency is interrelated to the period First of all in brief you can simply obtain the frequency by calculating with I t assuming that you have already known the period t appea ring in section 2 3 2 Time Interval Measurement With applying the fo...

Страница 73: ...e another waveform upward or downward by adjusting the vertical POSmON control so as to make the said waveform invisible 3 Move the waveform to the center adjusting the vertical POSITION control and make the waveform occupy 6 divisions 4 Adjust the Trigger LEVEL control130J and ensure that the beginning point of the waveform corresponds exactly to the starting point of the horizontal graticule lin...

Страница 74: ...shown in the figure makes it possible to measure the phase difference in the en tire cycle 2 Lissajous Pallem Method This method can only be used where the waveform is sine wave Measurements can possibly be performed at frequencies even higher than 500KHz depending on wide band width of the amplifier However in order for you to maintain the maximum accuracy provided in features it is desirable to ...

Страница 75: ... f I 7 zoiv 360 Fig 2 19 DUAL TRACE METHOD OF PHASE MEASUREMENT I I 1 1 j 1 V 1 V 1 1 t ru 1 V 1 I L PHASE DIFFERENCE angll son I A B a PHASE ANGLE CALCULATION 0 0 j O OJ reo b LlSSAJOUS PATIERNS OF VARIOUS PHASE ANGLES Fig 2 20 LISSAJOUS METHOD OF PHASE MEASUREMENT 75 ...

Страница 76: ...waveform to have it exactly positioned right on the horizontal center by adjusting the horizontal POSmON control 1261 7 Count the number of divisions indicated by the waveform along the central vertical graticule line You may count moving the waveform by means of the CH2 position control for close measurement 8 The ph ase difference of the two signals angle e is equ al to the arc sine of A B the n...

Страница 77: ...TIME VARIABLE control 1 51 is rotated fully clockwise and pushed in 3 Center the pulse vertically by adjusting the CH I vertical POSITION 11 71 4 Adjust the CHI VOLTS DIY switch 1131 so as to make top of the pulse be closest to the 100 graticule line and the bottom of the pulse be closest 10 the 0 line Where the correspondence is not ma de then rotate the VARIAB LE control 15J slightly countercloc...

Страница 78: ...suring Ialltime simp ly make the 10 point in fall time align with the central venical graticulc line and perform the measure ment conforming to the procedure sel out in Items 7 and 8 above 10 When measuri ng the rise and fall time note that 17 5ns Rise lime tr O 35 f JH which is transition time is contained in the OS 30 20D oneself Therefor e the real transition time uc is cOIllJX SeJ of measure t...

Страница 79: ...r l n u 1 0QQ f s f o I r I i q H m i o b r I a BASIC DISPLAY SETUP 1 r a I i 1 I C 1 b b WITH HOPIZONTAL MAGNIFICATION Fig 2 21 RISETIME MEASUREMENT 79 ...

Страница 80: ...rm data All the waveform dala displayed on the screen are plaited The horizontal and vertical waveforms with 10 and 8 div arc plotted In magnification mode only the magnified sector is plotted 3 Grid and scale Th e grid with hori zontal and vertical 10 and 8 div are plotted In horizontal and vertical rids the 0 2 div nit scale is plotted 4 Screen mode Setting DIP S W on the rear side makes it poss...

Страница 81: ...lJ I LJ u l 0 c 1 x t _ 0 _ O _j 0 0 0 p J Ul Jl I f I 0 I m I 0 t f J x F I l 0 F 1 z l 1 j p J 0 L s bn b I V P f j I J f 1 C 3 UJ I r j c n I f I t Fig 3 1 a PLOT OUTPUT DISPLAY 1 81 ...

Страница 82: ...I I I T I i d I n l I I I I I I I I I I I i I I I L L J L i L L J 1 i PIOX 0 2 lOX V 0 5 l1S G Tl 4 Om NCRM 51 SM L r V V I 1 1 1 I V I v rv x 1 7 I k I T L i rD l L0 W II 1 0 A 1 _ m IP ioxi 0 5 lOX OV 0 5 rns Fig 3 b PLOT OUTPUT DISPLAY 2 82 ...

Страница 83: ...F C _ _ D c I c f til I i Ul J I c ro c J C I _ _ til j I II c t J _ J c 1 31 II o c if II U 111 c I ru e T 1 c 01 1 111 e s r til II _1 I 3 I r T I t l S I I l I I oi r t l I I 1 0 I c Fig 3 ee PLOT OUTPUT DISPLAY 3 83 ...

Страница 84: ... t r rr m ___ _ l lr I T l i t 1 I I to t l i H I Ll In I r i l l I I f I rt a J I iii l r I L II J _ J II F J J l u 11 I 3 r I I D F L 1 r I r In I Pn i 1 V p U1 I lr I Fig 3 d PLOT OUTPUT DISPLAY 4 84 ...

Страница 85: ... DSR DTR SG t o 0 I 20 0 2 3 0 0 3 4 0 0 4 5 0 f O 5 60 0 6 20 0 0 20 7 0 0 7 FG TXD RXD RTS c rs DSR DTR SG 3 4 Setting Fig 3 2 RS 232C INTERFACE CABLE W IRING Using DIP SIW on the rear side set botb the PLOT and communication modes Off I ON BBBBBB BB o No I 2 3 4 5 II Date format Communication type 6 7 8 l L S reen mode Pen replacement Ex I HP7475A plotter 9600 BAUD RATE NO 1 2 3 4 5 6 7 8 stale...

Страница 86: ...n be set using DIP SfW No 7 and 8 One mode is selected out of the modes in table 3 1 Table 3 1 Screen mod e setting Screen DIP SfW Descriptions Screen Size mode NO 7 NO 8 mm 1 OFF OFF One screen is plotted in a sheet 175 X 140 of A4 paper Refer to Fig 3 1 a 2 ON OFF Two screens are plotted in a 118x95 8 sheet of A4 paper Refer to Fig 3 2 b 3 OFF ON Four screens are plotted in a 87 x70 sheet of A4 ...

Страница 87: ...YES When DIP S W 6 is set to OFF six colors arc used for plotting Table shows the details of plot and corresponding pen number Table 3 3 Pen number corresponding to the details of plot Details of plot Pen number GRID AND SCALE I CH I 3 WAVEFORM CH2 4 SAVE A 5 SAVE B 6 CU RSOR 2 CHI 3 VOLTS DIY CH 2 4 SAVE A 5 Character SAVE B 6 SWEEP 1 TIM E RANGE SAVE A 5 SAVE B 6 Others I X 7 ...

Страница 88: ...able 3 4 using DIP SiW 3 4 and 5 Table 3 4 Baud rate sening DIP siw BAUD RATE NO 3 NO 4 NO 5 OFF OFF OFF 300 BAUD 0 1 OFF OFF 600 BAUD OFF ON OFF 1200 BAUD ON ON OFF 2400 BAUD OFF OFF ON 4800 BAUD ON OFF ON 9600 BAUD OFF ON ON ON ON ON B Data format setting It is possib le to set RS 232C data format as shown in table 3 5 using DIP SiW 2 Table 3 5 Data format sening DIP Si W Data Form at No 2 OFF S...

Страница 89: ...ns the co mm unication with person al computer Table 3 6 Communication type selling DIP S W Co mmunication type No 1 OFF Un ilateral plotter output ON Bilateral communicatiof with personal computer Note Before turnmg on the instrument check DIP S W setung If you want to change the DIP S W setting for communication mode make it sure to turn on the instrument after the setting 89 ...

Страница 90: ...put to the X Y plotter Do not use the X Y plotter output function plotter output using PLOT S V when you use the co mputer communication function 3 7 Major troubles If X Y plotter does not operate normally chec k the followings I Cable wiring is not don e in accordance with Fig 3 2 2 X Y plotter power turns off 3 Commun ication type setting DIP S W 1 is wron g 4 The instrument is not in HOLD mode ...

Страница 91: ...racter length 5 Parity bit 6 Separating character 7 Transmission rate 8 Communication protocal EIA RS 232 is applicable Non synchronization I bit 2 bits 8 bits disabled CIR 300 600 1200 2400 4800 or 9600 BAUD Hardwire hand shake 4 3 Connector pin alignment and signal technology I Fig 4 1 and table 4 2 shows the RS 232C connector pin alignment and pin functions respectively Fig 4 1 RS 232C connecto...

Страница 92: ... FG A GND configuration 2 TXD IlA Data transmisxion OUT 3 RXD BIl Data reception IN 4 RTS CA Transmission request OUT 5 CTS CIl Transmission IN request 6 NC Non connection 7 SG AB Signal GND 8 NC Non connection 9 10 I I 12 13 14 15 16 17 18 19 20 21 22 23 24 25 NC Non connection 92 ...

Страница 93: ...ut signal controls modem transmission part and is in an indication state when modem transmission part is allo wed to transmi t Signal grou nd Signal ground cable 4 4 Connection Connect the instrument to personal comp uter using RS 232C interface cable Interface varies depe nding on personal computer type So read operation manual carefully before connecting it to personal computer and select proper...

Страница 94: ...puter in both storage or non storage mode For data communication set it to storage mode to transmit accurate data 2 Opera ting function D Waveform data transmission The instrument has the following six data memories CH I acq uisition memory storing CH I waveform data CH2 acquisition memory storing CH2 waveform data Two sweep trace memories SAVE A and B CH I display memory CH2 display memory CH 1 a...

Страница 95: ...1 11 11 128 80 28 o _ 1 DIV 00 Measuremen t condition data transmission C haracter tra nsmission It is possible to tran smit the waveform measurement condition to SAVE memory A or B using person al computer comma nd All the data are transmitted except for specia l data The data format for the measurement condition is subject to ASCII system Waveform da ta recepti on The details in SAVE memory A an...

Страница 96: ...pe is C R In binary system D I th ru DN are binary da ta and rernain ings are ASCII code data In binary syste m the sepa rating character code are not used for D I thru DN data O J Measuremen t condition data transmission and reception format After instrument receives Ro command the memory waveform measurement condition data arc transmitted in the foll owing format Refer to table 4 5 for mo re det...

Страница 97: ...s designated by the data number nnnn I denotes the memorynumber Whose head has address data mmmm ASCII or binary system may i Memory be designated as transmission I CHI Display memory method by X on the right column 2 CH2 Display memory After transmitting this 3 Save memory A command personal computer 4 Save memory B receives the designated data mmmm Frontaddress o memory Four digit integer oo rm ...

Страница 98: ...d mits waveform data to the Eifmmmm nnnn X DELI instrument to designate SAVE memory A and B in order to write a series of t denotes the memory number data from the front memory i should be J or 4 address mmmm ASCII or binary system may i Memory be designated as transmission method by X on the 3 Save memory A right column 4 Save memory B After transmitting this command personal computer transmits w...

Страница 99: ...t condition reception to the instrument and Character designates memory to save reception the waveform measurement condition data stored in i denotes the memory number the SAVE memory A and B j should be 3 or 4 After transmitting this i Memory command personal computer transmits measurement 3 Save memory A condition data 4 Save memory B ...

Страница 100: ...ss Decimal number ASCII 4 ASCII 4 Four digits 0001 1000 3 nnnn Data number Decimal number ASCII 4 ASCII 4 Four digits 0001 1000 4 Di Data ASCII system Decimal ASCII 3 Binary number number Three digits I data 000 255 Binary system 8 bits binary data S DEL Separating C R ASCII 1 ASCII 1 character Note L Sepa rating character data format is C R Note 2 3 or 4 is designated in reception mode 100 ...

Страница 101: ...ICS Alignment at the left end 6 V C VOLT CAL CAL or UNCAL Alignment at the 5 5 left end 7 P F PROBE Factor PIX of PIOX Alignment at the 4 4 left end 8 V D VOLTS DlV VOLT range value Alignment at the Note 2 the left end 7 7 Unit V MY Alignment at tne left end 9 RSV Spare 9 9 1 0 N S Number of J 3 sweeps II RSV Spare 2 2 12 DEL Separating I I characthe Note 1 For example 50ms and O 2ms arc indicated...

Страница 102: ...tion l 3Connect instrument with personal computer using RS 232C cable 2 Set the communication mode between instrument and personal computer in accordance with paragraph 3 4 2 3 Though it is possible to communicate with personal computer in storage mode or NON storage mode set storage mode in order to ensure accurate data transmission 4 10 Selection of program for data transmission Run the simple t...

Страница 103: ...ication mode 6 The personal computer port setting COM I or COM 2 is not correct 7 If communication mode is changed tum the instrument power off and on 4 12 Programming example Following is the example of programs executed when the instrument is connected with personal computer Before connecting personal computer set the instrument in reference to the communication mode as described in paragraph 3 ...

Страница 104: ...s an example of program a Baud rate 4800 BAUD b Data form START BIT 8 BIT 1 STOP BIT c Separating cha racter CIR DIP S W on oscilloscope side I NO 1 1 2 state 0 Computer program side OPEN COMl or COM2 4800 N 8 I CS OS CD FOR RANDOM AS 1 104 ...

Страница 105: ...THIS PROGRAM UNTIL RTNS IS A HEX41 30 OPEN COM 2 4800 N 8 1 CS OS CO FOR RANDOM AS 1 40 PRINT 1 SI 50 LINE INPlIT 1 RTNS 60 RTN ASC RTNS 70 IF RTN H41 THEN 100 80 PRINT RI RllTURN RTNS 90 GOTO 110 H10 PRINT ERROR STATUS RTN 110 CLOSE 1 120 END Explanation By running SI command in the first place it is possible to check whether it is possible to comm unicate with computer transmission reception Thi...

Страница 106: ...rt address 80 nnnn data numbe r 90 OPEN COM 2 4800 N 8 I CS DS CD FOR RANDOM AS 1 100 PRINT 1 Rl 001l0 00 50 A 110 LINE INPUT 1 RTNS 120 PRI NT RI RUTIJRN RTNS 130 CLOSE 1 140 END P rogram exam ple 2 2 Binary code conversion IBM compatib le personal computer 10 Ri mmmm nnnn X COM M AND 20 DRAW BINARY DATA FORM 3 40 OPEN COM 2 4800 N B I CS DS CD FOR RANDOM AS 1 50 PRI NT 1 Rl 0000 0050 B 60 RTNS I...

Страница 107: ...e sweep trace memory A measurement condition data using Ro comma nd Program example 3 IBM compatible personal computer 10 Ro i CO MMAND 20 O PEN C O M 1 4800 N 8 1 CS O S CD FO R RANDOMA S 1 30 PRINT 1 Ro 3 40 LINE INPUT 1 RTNS 50 PRINT Ro RUTURN RTNS 60 CLOSE 1 70 END 07 ...

Страница 108: ...2 1 90 AS CB CNT 250 B v 100 NEXT B 110 CNT CNT 1 120 fOR B 1 TO 250 130 C 251 B 140 IF C 100 mEN BS MI OS STR C 2 3 150 IF C 100 TIlEN BS 0 MlDS STRS C 2 2 160 IF C 10 THEN BS 00 MlDS STRS C 2 1 170 AS B CNT 250 BS 180 NEXT B 190 CNT CNT 1 200 NEXT I 210 OPEN COM2 4800 N 8 1 CS OS CD FOR RANDOM AS 1 220 PRINT 1 W 3 0000 1000 A 230 LINE INPUT 1 RTN 240 RTN ASC RTNS 250 IF RTN H41 THEN 360 260 PRIN...

Страница 109: ... C 140 AS B CNT 250 BS 150 NEXT B 160 CNT CNT 1 170 NEXT 1 180 O PEN COM2 4800 N 8 1 CS DS CD FOR Ro NDOMAS 1 190 PRINT 1 W3 0000 1000 B 200 LINE INPlIT 1 RTNS 210 RTN A SC RTNS 220 IF RTN H 41 THEN 330 230 PRINT W i CO MMAND PASS 240 PRINT 1 3 0000 1000 250 FOR I 1 TO 999 260 PRINT 1 AS 1 270 NEXT I 280 PRINT 1 AS 1 290 LINE INPlIT 1 RTNS 300 RTN ASC RTNS 310 IF RTN H41 THEN 330 320 G OTO 340 330...

Страница 110: ...ATS D ATS 20m s B TimelDiv 70 DATS D A TS CAL vol t CAL 80 DATS D ATS PI0X probe factor 90 DATS D ATS 0 5V volt slDiv 100 D A TS D A Ts 10DIV delay amount 110 D ATS DATS I N o of sweep 120 OPEN COM2 4800 N 8 1 CS D S CD FOR RANDOM A S 1 130 PRINT 1 Wo 3 140 LINE INPUT 1 RTNS 150 RTN A SC RTNS 160 IF RTN 1141 THEN 230 170 PRINT W o COMMAND PASS 180 PRINT 1 DATS 190 LINE INPUT 1 RTNS 200 RTN ASC RTN...

Страница 111: ...he CRT carefully with soft cloth moistened with mild detergent after having the fron t case and the filter disassembled first Unde r no circumstances sha ll the abrasive or strong solvents be used And then reassemble the filter and front case after having them thoroughly dried so as to prevent dew from being formed on their surfaces Take care not to leave any hand mark or the like on the surface o...

Страница 112: ...h OS 31N NIDSRS DIAl IL i IS 6 1 External Views OS 30200 0 S 30400 0 S 30600 f I ILJ 11 2 ...

Страница 113: ...6 2 Block Diagram s I i I I __ _ _ _ _ J I 113 a _ __ _ I IIU i I i j I 3 I _ _ I I I i II r TIJ w I _ ...

Страница 114: ...The specifications are subjected to change without notice ...

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