Pintek PS-1000 Instruction Manual Download

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Oscilloscope
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Oscilloscope

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OSCILLOSCOPE

INSTRUCTION MANUAL

Summary of Contents for PS-1000

Page 1: ...20MHz 25MHz MHz 40MHz 0MHz 60MHz 100MHz Oscilloscope Oscilloscope 30 Oscilloscope Oscilloscope 5 Oscilloscope Oscilloscope Oscilloscope For Series Models OSCILLOSCOPE INSTRUCTION MANUAL ...

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Page 3: ...ction precautions Operating tips Initial starting procedure Single trace display Dual trace display Triggering Time base control X Y Operation Component test DC Voltage measurements Measurement of voltage between two point on a waveform Time measurements Frequency measurements Pulse width measurements Pulse rise time and fall time measurements Time difference measurement Phase difference measureme...

Page 4: ...edlessly in the equipment under test Remove housings and covers only when necessary Turn off equipment while making test connections in high voltage circuits Discharge high voltage capacitors after removing power 2 If possible familiarize yourself with the equipment being tested and the location of its high voltage points However remember that high voltage may appear at unexpected points in defect...

Page 5: ... test may result from connecting the ground lead of most test instruments including this oscilloscope to a hot chassis To make measurements in hot chassis equipment always connect an isolation transformer between the ac outlet and the equipment under test To be on the safe side treat all two wire ac powered equipment as hot chassis unless you are sure it has an isolated chassis or an earth ground ...

Page 6: ...king the oscilloscope extremely easy to operate 2 High Input Impedance The input impedance of CH 1 CH 2 IS 1MΩ 2 25 pF 10pF 3 Variable Hold Off Function Signals with complex repeating periods which resist triggering can be stably triggered with a simple adjustment of the hold off level 4 X YOperation CH 1 can be applied as horizontal deflection X axis while CH 2 provides vertical deflection Y axis...

Page 7: ...indicator diode transistor and zener can be also viewed on screen 11 Beam Finder XX1 XX5 Trace can be returned to CRT viewing area regardless of setting horizontal vertical or intensity controls when press beam finder button 12 Illumination Control XX1 XX5 Graticule illumination can be adjusted according to brightness of circumstance ...

Page 8: ... DIV 1cm P31 phosphor 2kV accel voltage Input Impedance 1MΩ 2 25pF 10 Max Input Voltage 400V DC AC peak Rise Time About 17 5nS Over Shoot 3 Operation Mode CH1 CH2 DUAL ALT CHOP Algebraic Addition CH1 CH2 CH1 CH2 Inverter CH2 only X Y Mode Switch selectable using X Y switch CH 1 X axis CH 2 Y axis Accuracy Y Axis 3 X Axis 6 Bandwidth DC 1MHz 3dB X Y Phase Difference 3 50KHz SWEEP SYSTEM Sweep Displ...

Page 9: ...able time Control 5 1 un calibrated continuously variable between steps Sweep Magnification X10 10 extend sweep speed up to 10nS DIV DELAY TIME BASE XX5 only Sweep Magnification X10 10 extend sweep speed up to 10nS DIV Delay Time Position Variable control to locate desirable waveform for extending Coupling Bandwidth INT EXT TV V DC 1KHz 1 0DIV 0 5Vp p TV H 1KHz 100KHz 1 0DIV 0 5Vp p AUTO 100Hz 20M...

Page 10: ... 2Vp p 3 OTHER SPECIFICATIONS Power Source 115V 230V 10 AC 50 60Hz Power Consumption Approx 40 Watts Dimensions 324 W x 398 D x 132 H mm 12 8 x15 7 x5 2 Net Weight Approx 7 6kg Rated Range of Use 10 C 35 C 10 80 RH Limits of Operation 10 C 50 C 10 80 RH Storage Environment 30 C 70 C 10 90 RH Graticule Illumination Adjustable XX1 XX5 only Z Modulation XX5 only Positive TTL signal low level blank in...

Page 11: ...1 DIV 1cm P31 phosphor 2kV accel voltage Input Impedance 1MΩ 2 25pF 10 Max Input Voltage 400V DC AC peak Rise Time About 14nS Over Shoot 5 Operation Mode CH1 CH2 DUAL ALT CHOP Algebraic Addition CH1 CH2 CH1 CH2 Inverter CH2 only X Y Mode Switch selectable using X Y switch CH 1 X axis CH 2 Y axis Accuracy Y Axis 3 X Axis 6 Bandwidth DC 1MHz 3dB X Y Phase Difference 3 50KHz SWEEP SYSTEM Sweep Displa...

Page 12: ...able time Control 5 1 un calibrated continuously variable between steps Sweep Magnification X10 10 extend sweep speed up to 10nS DIV DELAY TIME BASE XX5 only Sweep Magnification X10 10 extend sweep speed up to 10nS DIV Delay Time Position Variable control to locate desirable waveform for extending Coupling Bandwidth INT EXT TV V DC 1KHz 1 0DIV 0 5Vp p TV H 1KHz 100KHz 1 0DIV 0 5Vp p AUTO 100Hz 25M...

Page 13: ...p p 3 OTHER SPECIFICATIONS Power Source 115V 230V 10 AC 50 60Hz Power Consumption Approx 40 Watts Dimensions 324 W x 398 D x 132 H mm 12 8 x15 7 x5 2 Net Weight Approx 7 6kg Rated Range of Use 10 C 35 C 10 80 RH Limits of Operation 10 C 50 C 10 80 RH Storage Environment 30 C 70 C 10 90 RH Graticule Illumination Adjustable XX1 XX5 only Z Modulation XX0 XX5 only Positive TTL signal low level blank i...

Page 14: ... DIV 1cm P31 phosphor Input Impedance 1MΩ 2 25pF 10 Max Input Voltage 400V DC AC peak Rise Time About 12nS 35 nS at X5 MAG Over Shoot 5 Operation Mode CH1 CH2 DUAL ALT CHOP Algebraic Addition CH1 CH2 CH1 CH2 Inverter CH2 only X Y Mode Switch selectable using X Y switch CH 1 X axis CH 2 Y axis Accuracy Y Axis 3 X Axis 6 Bandwidth DC 1MHz 3dB X Y Phase Difference 3 50KHz SWEEP SYSTEM Sweep Display M...

Page 15: ...le time Control 5 1 un calibrated continuously variable between steps Sweep Magnification X10 10 extend sweep speed up to 10nS DIV DELAY TIME BASE XX5 only Sweep Magnification X10 10 extend sweep speed up to 10nS DIV Delay Time Position Variable control to locate desirable waveform for extending Coupling Bandwidth INT EXT TV V DC 1KHz 1 0DIV 0 5Vp p TV H 1KHz 100KHz 1 0DIV 0 5Vp p AUTO 100Hz 30MHz...

Page 16: ...p p 3 OTHER SPECIFICATIONS Power Source 115V 230V 10 AC 50 60Hz Power Consumption Approx 40 Watts Dimensions 324 W x 398 D x 132 H mm 12 8 x15 7 x5 2 Net Weight Approx 7 6kg Rated Range of Use 10 C 35 C 10 80 RH Limits of Operation 10 C 50 C 10 80 RH Storage Environment 30 C 70 C 10 90 RH Graticule Illumination Adjustable XX5 only Z Modulation XX5 only Positive TTL signal low level blank intensity...

Page 17: ...0 DIV 1 DIV 1cm P31 phosphor Input Impedance 1MΩ 2 25pF 10 Max Input Voltage 400V DC AC peak Rise Time About 8 8nS Over Shoot 5 Operation Mode CH1 CH2 DUAL ALT CHOP Algebraic Addition CH1 CH2 CH1 CH2 Inverter CH2 only X Y Mode Switch selectable using X Y switch CH 1 X axis CH 2 Y axis Accuracy Y Axis 3 X Axis 6 Bandwidth DC 1MHz 3dB X Y Phase Difference 3 50KHz SWEEP SYSTEM Sweep Display Mode Main...

Page 18: ...le time Control 5 1 un calibrated continuously variable between steps Sweep Magnification X10 10 extend sweep speed up to 10nS DIV DELAY TIME BASE XX5 only Sweep Magnification X10 10 extend sweep speed up to 10nS DIV Delay Time Position Variable control to locate desirable waveform for extending Coupling Bandwidth INT EXT TV V DC 1KHz 1 0DIV 0 5Vp p TV H 1KHz 100KHz 1 0DIV 0 5Vp p AUTO 100Hz 40MHz...

Page 19: ...p p 3 OTHER SPECIFICATIONS Power Source 115V 230V 10 AC 50 60Hz Power Consumption Approx 40 Watts Dimensions 324 W x 398 D x 132 H mm 12 8 x15 7 x5 2 Net Weight Approx 7 6kg Rated Range of Use 10 C 35 C 10 80 RH Limits of Operation 10 C 50 C 10 80 RH Storage Environment 30 C 70 C 10 90 RH Graticule Illumination Adjustable XX1 XX5 only Z Modulation XX5 only Positive TTL signal low level blank inten...

Page 20: ...0 DIV 1 DIV 1cm P31 phosphor Input Impedance 1MΩ 2 25pF 10 Max Input Voltage 400V DC AC peak Rise Time About 7 0nS Over Shoot 5 Operation Mode CH1 CH2 DUAL ALT CHOP Algebraic Addition CH1 CH2 CH1 CH2 Inverter CH2 only X Y Mode Switch selectable using X Y switch CH 1 X axis CH 2 Y axis Accuracy Y Axis 3 X Axis 6 Bandwidth DC 1MHz 3dB X Y Phase Difference 3 50KHz SWEEP SYSTEM Sweep Display Mode Main...

Page 21: ...le time Control 5 1 un calibrated continuously variable between steps Sweep Magnification X10 10 extend sweep speed up to 10nS DIV DELAY TIME BASE XX5 only Sweep Magnification X10 10 extend sweep speed up to 10nS DIV Delay Time Position Variable control to locate desirable waveform for extending Coupling Bandwidth INT EXT TV V DC 1KHz 1 0DIV 0 5Vp p TV H 1KHz 100KHz 1 0DIV 0 5Vp p AUTO 100Hz 40MHz...

Page 22: ...p p 3 OTHER SPECIFICATIONS Power Source 115V 230V 10 AC 50 60Hz Power Consumption Approx 40 Watts Dimensions 324 W x 398 D x 132 H mm 12 8 x15 7 x5 2 Net Weight Approx 7 6kg Rated Range of Use 10 C 35 C 10 80 RH Limits of Operation 10 C 50 C 10 80 RH Storage Environment 30 C 70 C 10 90 RH Graticule Illumination Adjustable XX1 XX5 only Z Modulation XX5 only Positive TTL signal low level blank inten...

Page 23: ...V 1 DIV 1cm P31 phosphor 12kV accel voltage Input Impedance 1MΩ 2 25pF 10 Max Input Voltage 400V DC AC peak Rise Time About 5 8nS Over Shoot 5 Operation Mode CH1 CH2 DUAL ALT CHOP Algebraic Addition CH1 CH2 CH1 CH2 Inverter CH2 only X Y Mode Switch selectable using X Y switch CH 1 X axis CH 2 Y axis Accuracy Y Axis 3 X Axis 6 Bandwidth DC 1MHz 3dB X Y Phase Difference 3 50KHz SWEEP SYSTEM Sweep Di...

Page 24: ...le time Control 5 1 un calibrated continuously variable between steps Sweep Magnification X10 10 extend sweep speed up to 10nS DIV DELAY TIME BASE XX5 only Sweep Magnification X10 10 extend sweep speed up to 10nS DIV Delay Time Position Variable control to locate desirable waveform for extending Coupling Bandwidth INT EXT TV V DC 1KHz 1 0DIV 0 5Vp p TV H 1KHz 100KHz 1 0DIV 0 5Vp p AUTO 100Hz 60MHz...

Page 25: ...p p 3 OTHER SPECIFICATIONS Power Source 115V 230V 10 AC 50 60Hz Power Consumption Approx 45 Watts Dimensions 324 W x 398 D x 132 H mm 12 8 x15 7 x5 2 Net Weight Approx 7 6kg Rated Range of Use 10 C 35 C 10 80 RH Limits of Operation 10 C 50 C 10 80 RH Storage Environment 30 C 70 C 10 90 RH Graticule Illumination Adjustable XX1 XX5 only Z Modulation XX5 only Positive TTL signal low level blank inten...

Page 26: ...1cm P31 phosphor 14kV accel voltage Input Impedance 1MΩ 2 25pF 10 Max Input Voltage 400V DC AC peak Rise Time 3 5nS 1mV DIV 14nS Over Shoot 5 Operation Mode CH1 CH2 DUAL ALT CHOP Algebraic Addition CH1 CH2 CH1 CH2 Inverter CH2 only X Y Mode Switch selectable using X Y switch CH 1 X axis CH 2 Y axis Accuracy Y Axis 3 X Axis 6 Bandwidth DC 1MHz 3dB X Y Phase Difference 3 50KHz SWEEP SYSTEM Sweep Dis...

Page 27: ... time Control 5 1 un calibrated continuously variable between steps Sweep Magnification X10 10 extend sweep speed up to 10nS DIV DELAY TIME BASE XX5 only Sweep Magnification X10 10 extend sweep speed up to 10nS DIV Delay Time Position Variable control to locate desirable waveform for extending Coupling Bandwidth INT EXT TV V DC 1KHz 1 0DIV 0 5Vp p TV H 1KHz 100KHz 1 0DIV 0 5Vp p AUTO 100Hz 100MHz ...

Page 28: ...p p 3 OTHER SPECIFICATIONS Power Source 115V 230V 10 AC 50 60Hz Power Consumption Approx 50 Watts Dimensions 324 W x 398 D x 132 H mm 12 8 x15 7 x5 2 Net Weight Approx 7 6kg Rated Range of Use 10 C 35 C 10 80 RH Limits of Operation 10 C 50 C 10 80 RH Storage Environment 30 C 70 C 10 90 RH Graticule Illumination Adjustable XX1 XX5 only Z Modulation XX5 only Positive TTL signal low level blank inten...

Page 29: ...nt can operate on any one of the line voltages shown in the below table by inserting the line voltage selector plug in the corresponding position on the rear panel Before connection the power plug to an AC line outlet be sure to check that the voltage selector plug is set in the position corresponding to the desired line voltage SELECTOR LINE VOLTAGE FUSE 115V 100 130V 50 60Hz 800mA 230V 200 260V ...

Page 30: ...instrument Neverinsertwires pins orothermetalobjectsintotheventilationfan Nevermoveorpulltheinstrumentwiththepowercordoraprobecord Never move instrument when the power cord or a signal probe is connected to acircuit If the instrument is used in a manner not specified by the manufacturer then protectionmechanismsbuiltintothe instrumentmaynotfunctionproperly 27 ...

Page 31: ...28 32 31 30 29 28 27 26 32 25 24 23 22 21 19 18 15 16 14 13 10 11 9 7 8 5 2 4 1 20 60MHz Standard Type Front Panel Controls and Indicators OSCILLOSCOPE INSTRUCTION MANUAL ...

Page 32: ...29 CONTROLS AND INDICATORS 32 31 30 29 28 27 26 32 25 24 23 22 21 19 18 16 15 14 13 10 11 9 7 6 5 2 4 1 3 8 12 17 20 20 60MHz Delay Type Front Panel ...

Page 33: ...30 32 31 30 29 28 27 26 32 25 24 23 22 21 19 18 15 16 14 13 10 11 9 33 8 5 2 4 1 7 100MHz Standard Type Front Panel CONTROLS AND INDICATORS ...

Page 34: ...31 32 31 30 29 28 27 26 32 25 24 23 22 21 19 18 16 15 14 13 10 11 9 33 8 5 2 4 1 7 17 100MHz Delay Type Front Panel CONTROLS AND INDICATORS ...

Page 35: ...32 37 36 35 40 Standard Type Rea r Panel CONTROLS AND INDICATORS ...

Page 36: ...33 37 36 35 38 39 40 Dela y Type Rea r Panel CONTROLS AND INDICATORS ...

Page 37: ... When engaged limits bandwidth to 20 MHz COMPONENT TEST Pushbutton 3 With pushbutton set to in position Component Test mode is enabled Normal scope operation is enabled with pushbutton in out position COMPONENT TEST Jack 6 Banana type HI side input jack for connection to component in ComponentTest operation mode GND Terminal 8 Oscilloscope chassis ground jack and earth ground via three wire ac pow...

Page 38: ... 1 and channel 2 signals simultaneously Dual trace mode may be either alternate or chopped sweep see the description under HOLD OFF PULLCHOP 100MHz Cannel 1 POS PULLCHOPcontrol ADD The inputs from channel 1 and channel 2 are summed and displayed as a single signal If the Channel 2 POSITION PULL INVERT control is pulled out the input from channel 2 is subtracted from channel 1 and the difference is...

Page 39: ...n the dual trace mode the channel 1 and channel 2 sweeps are chopped and displayed simultaneously normally used at slower sweep speeds When it is pushed in the two sweeps are alternately displayed one after the other normally used at higher sweep speeds CH 2 POSITION PULLINVERT Control 25 POSITION Rotation adjusts vertical position of channel 2 trace In X Y operation rotation adjusts vertical posi...

Page 40: ...IABLE SWEEP control is set to CAL sweep rate is calibrated This control has 23 steps from 0 1 μS DIV to 2 S DIV in a 1 2 5 sequence 100MHz 23 steps from 20 nS DIV to 0 5 S DIV in a 1 2 5 sequence DELAY Time Base TIME DIV Control 17 Provides step selection of sweep rate for delayed sweep time base This control has 23 steps from 20 nS DIV to 0 5 S DIV in a 1 2 5 sequence DELAY TIME POSITION Control ...

Page 41: ...hen control is rotated fully counterclockwise the hold off period is MINIMUM normal The holder period increases progressively with clockwise rotation PULL NORM TRIG When pushed in selects automatic triggering mode In this mode the oscilloscope generates sweep free runs in absence to triggered sweep operation when an adequate trigger signal is present Automatic triggering is applicable to both the ...

Page 42: ...e triggering point rotation in the direction clockwise selects more positive triggering clockwise selects more positive triggering point PULL SLOPE Two position push pull switch The in position selects a positive going slope and the out position selects a negative going slope as triggering point for main sweep EXTERNAL TRIGGER Jack 16 External trigger input for single and dual trace operation REAR...

Page 43: ...ocedure a Do not connect the ground clip of the probe to either side of the line The clip is already at earth ground and touching it to the hot side of the line may weld or disintegrate the probe tip and cause possible injury plus possible damage to the scope or probe b Insert the probe tip into one side of the line voltage receptacle then the other One side of the receptacle should be hot and pro...

Page 44: ...e clip leads under certain circumstances Such conditions could also pose a safety hazard which the ground cable will prevent 5 The probe ground clips are at oscilloscope and earth ground and should be connected only to the earth ground or isolated common of the equipment under test To measure with respect to any point other than the common use CH 2 CH 1 subtract operation with the channel 2 probe ...

Page 45: ...he output of a signal generator into its characteristic impedance to minimize ringing especially if the signal has fast edges such as square waves or pulses For example the typical 50Ωoutput of a square wave generator should be terminated into an external 50Ω terminating load and connected to the oscilloscope with 50Ωcoaxial cable 5 Probe compensation adjustment matches the probe to the input of t...

Page 46: ...2 may be used for single trace operation To observe a waveform on channel 1 1 Perform the steps of the Initial Starting Procedure 2 Connect the probe to the CH 1 X input jack 3 Connect the probe ground clip to the chassis or common of the equipment under test Connect the probe tip to the point of measurement 4 Move the CH 1AC GND DC switch out of the GND position to either DC orAC 5 If no waveform...

Page 47: ...of 1 ms DIV and slower or where the phase relationship between channel 1 and channel 2 requires measurement If chop sweep is used at sweep times of 0 2 ms DIV and faster the chop rate becomes a significant portion of the sweep and may become visible in the displayed waveform However you may select chop sweep at any sweep time for special applications 6 Adjust the channel 1 and 2 POSITION controls ...

Page 48: ... triggered sweep operation is selected The sweep remains at rest until the selected trigger source signal crosses the threshold level set by the TRIG LEVEL control The trigger causes one sweep to be generated after which the sweep again remains at rest until triggered In the normal triggering mode there will be no trace unless an adequate trigger signal is present In the ALT VERTICAL MODE of dual ...

Page 49: ...he EXT position of the COUPLING switch the signal applied to the EXT TRIG jack becomes the trigger source This signal must have a timing relationship to the displayed waveforms for a synchronized display 4 In the LINE position of the COUPLING switch triggering is derived from the input line voltage 50 60 Hz and the trigger SOURCE switch is disabled This is useful for measurements that are related ...

Page 50: ... the screen without overlapping In such a case the sweep can be stable synchronized to the HOLD OFF time sweep pause time of the sweep waveform TIME BASE Control 1 Sweep TIME DIV Control Set the sweep TIME DIV control to display the desired number of cycles of the waveform If there are too many cycles displayed for good resolution switch to faster sweep time If only a line is displayed try a slowe...

Page 51: ...xpansion The sweep time during the magnification operation is obtained as follows Value indicated by TIME DIV switch x 1 10 Thus the unmagnified maximum sweep speed 0 1μsec DIV can be made faster with magnification as follows 0 1μsec DIV x 1 10 10 nsec DIV When the sweep is magnified and the sweep speed has become faster than 0 1 sec DIV the trace may become darker 3 MAIN MIX DELAYSwitch When turn...

Page 52: ...cteristic frequency temperature velocity etc into a voltage One common application is frequency response measurements where the Y axis corresponds to signal amplitude and the X axis corresponds to frequency 1 Press the X Y switch In this mode channel 1 becomes the X axis input and channel 2 becomes the Y axis input All VERTICAL MODE switch should be disengaged for X Yoperation 2 The X and Y positi...

Page 53: ... E BLK 1000 Ω RED B C E BLK 0 short Ω 500 resistor Ω 10K resistor Ω 1 F ceramic capacitor μ 1 F electrolytic μ capacitor 10 F electrolytic μ capacitor 100 F electrolytic capacitor μ Silicon diode 4 7V zener diode Fig 6 OPERATING INSTRUCTIONS ...

Page 54: ...nt deflected completely off the screen This is especially true when the dc component is large with respect to the waveform amplitude If so reset the VOLTS DIV control and repeat steps 2 and 3 until the waveform and the zero reference are both on the screen 4 Use the X POSITION control to bring the portion of the waveform to be measured to the center vertical graduation line of the graticule scale ...

Page 55: ...raduation line 3 Using the X POSITION control adjust the second point to coincide with the center vertical graduation line 4 Measure the vertical distance between the two points at least 3 divisions desirable for best accuracy Multiply the number of divisions by the setting of the VOLTS DIV control If a probe is used further multiply this by the probe attenuation ratio The measurement is summarize...

Page 56: ...mal display of the waveform to be measured Be sure the VAR SWEEPcontrol is set to CAL 2 Using the POSITION control set one of the points to be used as a reference to coincide with the horizontal center line Use the X POSITION control to set this point at the intersection of any vertical graduation line 3 Measure the horizontal distance between the two point at least 4 divisions desirable for best ...

Page 57: ...uring the time period of one cycle of waveform and calculating the frequency witch equals the reciprocal of the time period 1 Set up the oscilloscope to display one cycle of waveform see Fig 10 2 Measure the time period of one cycle and calculate the frequency as follows Freq 1 Period In the example shown in Fig 15 a period of 40 μs is observed Substituting this value into the above equation the f...

Page 58: ...ting to calculate the time sweep TIME DIV setting to calculate the time span Multiply the reciprocal of this value by the number of cycles present in the time span If X10 magnification is used multiply this further by 10 Note that errors will occur for displays having only a few cycles The measurement is summarized by the following equations Freq For the example shown in Fig 16 there are 10 cycles...

Page 59: ...tion line Be sure that the VAR SWEEP control is set to CAL Multiply the number of horizontal divisions by the sweep TIME DIV and if X10 magnification is used further multiply this value by 1 10 The measurement is summarized by the following equation Pulse Width Hor div x TIME DIV X 1 10 if X10 is used For the example shown in Fig 12 the pulse width at the center of the pulse is 4 6 divisions If th...

Page 60: ...trol to the CALposition 3 Use the X POSITION control to adjust the 10 point to coincide with a vertical graduation line and measure the horizontal distance in divisions between the 10 and 90 points on the waveform Multiply this by the sweep TIME DIV setting and also by 1 10 if the X10 magnification mode was used NOTE Be sure that the correct 10 and 90 lines are used For such measurements the 0 10 ...

Page 61: ...e center horizontal graduation line as shown in Fig 14 4 Use the X POSITION control to set the reference signal coincident with one of the vertical graduation lines 5 Measure the horizontal distance between the two signals and multiply this distance in divisions by the sweep TIME DIV setting If X10 magnification is used multiply this again by 1 10 The measurement is summarized by the following equ...

Page 62: ...P controls to adjust the display so one cycle of the reference signal occupies 8 divisions horizontally see Fig The TRIG LEVEL and X POSITION controls are useful in achieving this display The display should be as shown in Fig where one division now represents 45 in phase 4 Measure the horizontal distance between corresponding points on the two waveforms Multiply the distance in division time 45 pe...

Page 63: ...the TRIG LEVEL may be readjusted For this type of operation the relationship of one division to 45 no longer holds Instead the following equation must be used Phase diff Hor div x 45 div x Where A NewTIME DIV setting B OriginalTIME DIV setting A simpler method of obtaining more accuracy quickly is to simply use X10 magnification for a scale factor of 4 5 division ۱٦ Fig 16 Measuring Small Phase Di...

Page 64: ...tput for the normal operating level of the circuit being tested If desired the circuit s output may first be observed on the oscilloscope with normal sweep operation If the test circuit is overdriven the sine the signal level must be reduced 3 Connect channel 2 to the input and channel 1 to the output of the test circuit Set channel 1 and 2 gain controls for exactly the same amplitude waveform on ...

Page 65: ...t and the output of the test circuit to channel 2 vertical axis of the oscilloscope A demodulator probe will give a text book frequency response display as shown in Fig 24 but a standard probe can be used which will result in an envelope display 2 Connect the sweep ramp voltage of the sweep generator to the channel 1 input of the oscilloscope 3 Set the X Y switch to the X Y position engaged and ad...

Page 66: ... blown fuse then replace only with the correct value fuse For 115V line voltage operation use a 800 mA 250V fuse For 230V line voltage operation use a 600mA 250V fuse The fuse is located on the rear panel adjacent to the power cord receptacle Remove the fuseholder assembly as follows 1 Unplug the power cord from rear of scope 2 Insert a small screwdriver in fuseholder slot located between fusehold...

Page 67: ...center horizontal line on the graticule scale The trace should be exactly with the horizontal line 3 Use the TRACE ROTATION adjustment on the front panel to eliminate any trace tilt CALIBRATION CHECK Ageneral check of calibration accuracy may be made by displaying the output of the CAL terminal on the screen This terminal provides a square wave of 2 Vp p This signal should produce displayed wavefo...

Page 68: ...MP CH1 X INPUT CH2 Y INPUT CH2 OUTPUT Z AXIS MOD VERTICAL OUTPUT AMP Z AXIS AMP CRT CIRCUIT HV SUPPLY CRT TRIG INPUT AMP TRIG GENERATOR AUTO CIRCUIT LINE TRIG LINE EXT INT X Y EXT TRIG X AXIS SIGNAL MAIN SWEEP GENERATOR DELAY SWEEP GENERATOR FOR XX5 ONLY HORIZONTAL SWITCHING HORIZONTAL OUTPUT AMP CALIBRATOR POWER SUPPLY AC LINE 50 60Hz TRIG SIGNAL FREE RUN SIGNAL TO EACH BLOCKS 2 Vp p 1 kHZ SQUARE...

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