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Instruction Manual

ISR-6051

Dual Channel Oscilloscope

EN

Summary of Contents for ISR-6051

Page 1: ...Instruction Manual ISR 6051 Dual Channel Oscilloscope EN ...

Page 2: ...served No part of this manual may be photocopied reproduced or translated into another language without prior written consent of RS Components The information in this manual was correct at the time of printing Due to product improvements RS Components reserves the rights to change specification equipment and maintenance procedures at any time without notice 82SR 60510MC1 ...

Page 3: ... EQUIPMENT INSTALLATION AND OPERATION 8 3 5 CRTINTENSITY 8 3 6 MAXIMUM WITHSTAND VOLTAGE OF INPUT TERMINALS 8 4 FRONT AND REAR PANELS 9 4 1 FRONT PANEL 11 4 2 REAR PANEL 26 5 OPERATION 28 5 1 READOUT DISPLAY 28 5 2 CONNECTING INPUT SIGNALS 30 5 3 ADJUSTMENTS AND CHECKS 31 5 4 FUNCTION CHECK 33 5 5 BASIC OPERATION 36 5 6 MEASUREMENT APPLICATIONS 45 6 MAINTENENCE 47 6 1 FUSE REPLACEMENT 47 6 2 LINE ...

Page 4: ... is for measurements performed on circuits not directly connected to the low voltage installation Measurement category II is for measurements performed on circuits directly connected to the low voltage installation Measurement category III is for measurements performed in the building installation Measurement category IV is for measurements performed at the source of the low voltage installation T...

Page 5: ...lour markings identified in your plug appliance proceed as follows The wire which is coloured Green Yellow must be connected to the Earth terminal marked with the letter E or by the earth symbol or coloured Green or Green Yellow The wire which is coloured Blue must be connected to the terminal which is marked with the letter N or coloured Blue or Black The wire which is coloured Brown must be conn...

Page 6: ...protected by a 3A or 5A fuse Larger conductors would normally require 13A types depending on the connection method used Any moulded mains connector that requires removal replacement must be destroyed by removal of any fuse fuse carrier and disposed of immediately as a plug with bared wires is hazardous if a engaged in live socket Any re wiring must be carried out in accordance with the information...

Page 7: ...rsor functions for voltage time and frequency measurement provide operational convenience It also has the function of auto measurement for frequency and counter Ten different user defined instrument settings can be saved and recalled The vertical deflection system has two input channels Each channel has 14 basic deflection settings from 1mV to 20V per division The horizontal deflection system prov...

Page 8: ...z 3 ALT MAG function The primary sweep waveform together with the magnified sweep waveform can be displayed simultaneously using the ALT MAG function The magnification ratio can be selected from three levels of 5 10 or 20 to allow detailed inspection of the displayed waveform in the centre of the CRT 4 Convenient VERT MODE triggering The sync signal source is determined automatically when the vert...

Page 9: ...en may be intensity modulated where pulse signal or time scale marks are required 9 LED indicator and buzzer alarm The LED s located in the front panel assist operation and indicate additional information Incorrect operation and the electrical end of travel of control knobs are indicated by a warning beep 10 SMD manufacturing technology The instrument is built using advanced SMD technology to redu...

Page 10: ... steps in 1 2 5 sequence Vernier vertical sensitivity Continuously variable to 1 2 5 or less of panel indicated value Bandwidth 3dB and rise time Bandwidth 3dB Rise time 5mV 20V DIV DC 50MHz Approx 7ns 1mV 2mV DIV DC 7MHz Approx 50ns Maximum input voltage 400V DC AC peak at 1kHz or less Input coupling AC DC GND Input impedance Approx 1MΩ 2 approx 25pF Vertical modes CH1 CH2 DUAL CHOP ALT ADD CH2 I...

Page 11: ...idth X axis DC 500kHz 3dB Phase difference 3 or less from DC to 50kHz OUTPUT SIGNAL CH1 signal output Voltage approx 20mV DIV with 50Ω termination Bandwidth 50Hz to at least 5MHz Calibrator output Voltage 0 5V 3 Frequency approx 1kHz square wave CRT READOUT Panel setting display CH1 CH2 sensitivity sweep time trigger condition Panel setting save recall 10 sets Cursor measurement Cursor measurement...

Page 12: ... H 370 D mm Weights 8 kg OPERATING ENVIRONMENT Indoor use Altitude up to 2000 m Ambient temperature To satisfy specifications 10 to 35 50 F to 95 F Maximum operating ranges 0 to 40 32 F to 104 F Relative humidity 85 RH max non condensing Installation Category II 300V Pollution degree 2 STORAGE TEMPERATURE HUMIDITY 10 to 70 70 RH maximum ACCESSORIES Power cord 1 Instruction manual 1 Probe 1 10 2 ...

Page 13: ...sted in the table below Before connecting the power plug to an AC supply ensure the voltage selector on the rear panel is set to the correct position corresponding to the supply voltage The instrument may be damaged if connected to an incorrect supply voltage WARNING To avoid electrical shock the power cord protective ground conductor must be connected to ground When supply voltages are changed re...

Page 14: ...not specified in these instructions the protection afforded by the equipment may be impaired 3 5 CRT intensity To prevent permanent damage to the CRT phosphor do not make the CRT trace excessively bright or leave the spot in the same place on the screen for a long time 3 6 Maximum withstand voltage of input terminals The maximum input voltages which can be applied to the instrument input terminals...

Page 15: ...ate additional information Incorrect operation and the electrical end position of control knobs is indicated by a warning beep All of the buttons the VOLTS DIV and TIME DIV control knobs have electronic operation and their functions and settings can be stored in the internal memories The front panel is subdivided into four sections as follows Display controls Vertical controls Horizontal controls ...

Page 16: ...ISR 6051 OSCILLOSCOPE USER MANUAL 10 Front panel Ω Ω µ Ω ...

Page 17: ...pe is first switched on all LEDs light as the instrument carries out a self test routine After a few seconds most LEDs will extinguish and the instrument will enter normal operation mode The instrument will revert to its last used state 2 TRACE ROTATION The TRACE ROTATION allows alignment of the horizontal trace parallel with the graticule lines Use a small screwdriver to adjust this potentiometer...

Page 18: ... used as a reference potential connection for DC and low frequency signal measurement purposes 7 TEXT ILLUM Double function control knob This button is for alternately selecting the text readout intensity function or scale illumination function Either TEXT or ILLUM will appear on the CRT The TEXT ILLUM function can be adjusted with the VARIABLE 9 control knob Turn the knob clockwise to increase th...

Page 19: ...elect the functions in the following sequence C1 Moves cursor 1 on the CRT or symbol is displayed C2 Moves cursor 2 on the CRT or symbol is displayed TRK Simultaneously moves both cursor 1 and cursor 2 with the interval between the two cursors unchanged both symbols are displayed above the two cursors 9 VARIABLE Turn or press the VARIABLE knob to set the cursor position TEXT ILLUM level etc In cur...

Page 20: ...e the button is momentarily pressed the memory location digit increases until the number 9 is reached The button operates in a similar manner but decreases the memory location digit until the number 0 is reached Press and hold SAVE for approx 3 seconds to write the instrument settings into the selected memory location and indicate the associated readout information with To recall a front panel set...

Page 21: ... to select the channel 1 or channel 2 of the instrument to on The deflection coefficient will be displayed on the CRT to indicate the current settings 13 CH1 POSITION Control knob 14 CH2 POSITION Control knob The vertical trace position of channel 1 or channel 2 can be set with this control knob In X Y mode the CH2 POSITION control knob is used for the Y deflection Ω Ω 11 15 17 19 21 16 18 20 22 1...

Page 22: ...subtraction of both input signals is displayed depends on the phase relationship and the INV setting As a result both signals are displayed as one signal For correct measurements the deflection coefficients for both channels must be equal INV Press and hold the button to set the channel 2 invert function on or off The invert on condition is indicated by the symbol in the readout The invert functio...

Page 23: ...l input channel coupling The setting is displayed in the CRT readout with the deflection coefficient 21 CH1 GND P 10 22 CH2 GND P 10 Button with two functions GND Each time the button is momentarily pressed the input of the vertical amplifier is grounded It is displayed in the readout as an earth ground symbol P 10 Press and hold the button to select the indicated deflection coefficient of the cha...

Page 24: ...ty earth contact of the mains plug 24 CH2 Y Input BNC socket This BNC socket is the signal input for channel 2 In X Y mode signals at this input are used for the Y deflection The outer ground connection is galvanically connected to the instrument ground and consequently to the safety earth contact of the mains plug Horizontal controls The horizontal controls select the time base operation mode and...

Page 25: ...d VAR Press the button to alternate the TIME DIV control knob function between time base switch and vernier variable After switching to the VAR function the time deflection coefficient remains calibrated until further adjustments are made Turn the TIME DIV control knob counter clockwise to increase the time deflection coefficient reduce the deflection speed and the deflection coefficient becomes u...

Page 26: ...ION control 29 MAG FUNCTION 5 10 20 MAG When MAG has been selected the displayed waveform will be expanded to the right and left with the centre of the waveform displayed on the CRT The magnification ratio can be selected from three levels of 5 10 20 MAG by pressing this button ALT MAG Press the button to display the primary sweep waveform together with the magnified sweep waveform The magnified p...

Page 27: ...uns A baseline trace will be displayed when there is no trigger signal The setting of the trigger level changes only when the TRIGGER LEVEL control is adjusted to a new level setting NML Normal Select normal mode and the input signal will trigger the sweep when the TRIGGER LEVEL control is set within the peak to peak limits of an adequate trigger signal When the sweep is not triggered no baseline ...

Page 28: ...ernately corresponding to the signals on CH1 and CH2 to trigger the sweep CH1 The signal applied to the channel 1 input connector is the source of the trigger signal CH2 The signal applied to the channel 2 input connector is the source of the trigger signal LINE The triggering signal is obtained from a sample of the AC power source waveform The trigger source is useful when the displayed waveform ...

Page 29: ...omposite sync polarity i e for negative sync to obtain TV field triggering on the vertical sync pulse TV H Start the main trace at the beginning of a video signal line The polarity must match the composite sync polarity to obtain TV line triggering on the horizontal sync pulse 33 SLOPE Button for the triggering slope Briefly press the button to select the slope of the signal which is used for trig...

Page 30: ...ms that have a large DC offset HFR High frequency reject Attenuates high frequency triggering signal components above 50kHz HFR coupling is useful for providing a stable display of low frequency components of complex waveforms and eliminates high frequency interference to the trigger signal LFR Low frequency reject Attenuates low frequency triggering signal components below 30kHz and blocks the DC...

Page 31: ...D OFF Control knob Use when the signal waveform is complex and stable triggering cannot be attained with the TRIGGER LEVEL 35 knob alone Rotate this control knob to adjust hold off time trigger inhibit period beyond sweep duration When the control is rotated fully clockwise the hold off period is at minimum normal The hold off period increases progressively with anti clockwise rotation 37 TRIG EXT...

Page 32: ...nnected to a suitable and reliable earth connection for safety 40 CH1 Output BNC socket This output may be used to connect to a frequency counter or other instrument RANGE 207 250V POWER MAX 50 WATTS 60VA IEC1010 250V CAT II Z AXIS INPUT 30Vpk MAX 108 132V 90 110V 50 60Hz FOR CONTINUED FIRE PROTECTION REPLACE ONLY WITH SPECIFIED NO OPERATOR SERVICEABLE COMPONENTS INSIDE DO NOT REMOVE TO AVOID ELEC...

Page 33: ...27 41 Z Axis Input BNC socket Connect external signals to the Z axis amplifier for intensity modulating the CRT display This terminal is DC coupled The intensity is reduced by a positive signal while it is increased by a negative signal ...

Page 34: ...function of instrument controls connectors and indicators refer to the instructions for Front Panel and Rear Panel of this manual 5 1 Readout display The CRT display indicates how to set up the instrument controls No physical markings are shown on the rotary switches to indicate the control settings A key to the location and type of information displayed on the CRT is illustrated in figure 5 1 bel...

Page 35: ...ISR 6051 OSCILLOSCOPE USER MANUAL 29 Figure 5 1 Readout Layout ...

Page 36: ...rd 1 10 probes supplied with the oscilloscope are shielded against electromagnetic interference and have high input impedance for low circuit loading CAUTION To obtain the best waveform display keep probe ground and signal leads as short as possible Incorrect probe compensation can cause measurement errors Check and adjust probe compensation whenever a probe is moved to a different channel or osci...

Page 37: ...ed periodically whenever the probes are used on different input channels or instruments 1 Connect the probe to the oscilloscope Push the BNC connector onto the required channel input socket and rotate the collar to lock it into place 2 Set the probe slide switch to the 10 position 3 Briefly press the CH1 CH2 button to set the oscilloscope to channel 1 and channel 2 4 Press and hold the P 10 button...

Page 38: ...ure 5 2 If the probe needs to be adjusted proceed as detailed in step 8 If either probe does not need to be adjusted proceed with Function Check Figure 5 2 Typical compensation waveform 8 Use a small insulated screwdriver to adjust the probe Slowly rotate the adjustment control until the probe is properly compensated ...

Page 39: ...st point of the oscilloscope 3 Set the oscilloscope controls to display both channels VERTICAL VOLTS DIV 0 2V COUPLING DC ALT CHOP CHOP HORIZONTAL TIME DIV 0 5ms TRIGGER MODE ATO SOURCE VERT COUPLING AC SLOPE The figure 5 3 below illustrates a satisfactory display The waveform should be approximately 0 5Vp p with a frequency of 1kHz which confirms the correct operation of the vertical and horizont...

Page 40: ...e graticule 6 Operate the CH2 INV by pressing and holding the button 7 Set to the ADD mode by pressing the ADD button briefly 8 Set both CH1 and CH2 COUPLING to DC 9 The figure 5 4 below shows a satisfactory display The display will show a flat trace located on the centre gracticule that confirms the correct operation of channel balance and ADD offset function ...

Page 41: ...ISR 6051 OSCILLOSCOPE USER MANUAL 35 Figure 5 4 ADD mode 10 Turn off the ADD mode by pressing the ADD button briefly 11 Turn off the CH2 INV by pressing and holding the button ...

Page 42: ... to channel 1 or channel 2 mode Displaying CH1 and CH2 To display both signals at the same time proceed as following 1 Set the CH1 and CH2 on The figure 5 5 below shows two synchronous waveforms in both modes 2 Adjust the CH1 or CH2 POSITION control to position the two waveforms 3 Set the ALT CHOP button to CHOP mode if the waveforms are flickering Figure 5 5 Both typical waveforms ...

Page 43: ...button to ADD mode Figure 5 6 below shows the sum of the waveforms from figure 5 5 2 Set the CH2 INV to on by pressing and holding the button if necessary to display the different waveform 3 Press and hold one of the VOLTS DIV control knobs to set it to vernier variable mode Adjust one channel to match the other in the event of gain difference Figure 5 6 Typical ADD waveform ...

Page 44: ... use the oscilloscope in the X Y mode proceed as follows 1 Connect the horizontal or X axis signal to the CH1 input 2 Connect the vertical or Y axis signal to the CH2 input 3 Set the X Y button to X Y operation shown as Fig 5 7 below Use the HORIZONTAL POSITION control to adjust the X axis Note When high frequency signals are displayed in the X Y mode the frequency bandwidths and phase difference ...

Page 45: ...ton proceed as follows 1 Adjust the TIME DIV to the fastest sweep that displays the event 2 Rotate the HORIZONTAL POSITION control to move the event to be visible on the centre of screen 3 Press the MAG button 4 Select MAG 5 MAG 10 or MAG 20 for MAG function as required The displayed waveform will be expanded 10 times to the right and left from the centre of screen as centre of expansion Figure 5 ...

Page 46: ...ons 1 Set the required portion of the waveform to the centre of the screen for magnification 2 The magnified waveform appears approximately 3 divisions below the normal 1 waveform 3 When the MAG ALT button is pressed all text and other characters will disappear from the screen Figure 5 9 a Mag 1 waveform igure 5 9 b Mag 10 waveform ...

Page 47: ...rm display A stable sweep can be obtained if synchronized to the measured signal waveform by adjusting the hold off time of the sweep waveform Figure 5 10 a shows several different waveforms which overlap on the screen making the signal observation difficult when the hold off is set to minimum Figure 5 10 b shows the nuisance portion of the signal is held off The same waveforms are displayed on th...

Page 48: ...s set to VERT MODE and the ALT CHOP is set to ALT the input signals applied to CH1 and CH2 will become trigger sources alternately during the sweep Consequently waveforms of different frequencies will appear stable on the CRT as each is triggered seperately Apply a sine wave to CH1 and a square wave to CH2 Figure 5 11 shows the portions of the signals indicated by A which are at an acceptable leve...

Page 49: ...12 Trig Source on VERT one channel ALTERNATE TRIGGER The jittering wave as shown in Figure 5 13 may appear on the screen when a gently sloping signal displays approximately 10 cycles or less by setting VERT MODE to SOURCE and setting ALT CHOP button to ALT For detailed and clear observation of each signal set VERTICAL mode to CH1 or CH2 Figure 5 13 Alternate Trig ...

Page 50: ...parator separates the frame or line sync pulses from the video signal To trigger the oscilloscope at the vertical frame rate press the TV button to set TV V and TV H triggering Figure 5 14 a shows the vertical signal of TV V and Figure 5 14 b shows the horizontal signal of TV H Figure 5 14 a TV V Figure 5 14 b TV H Figure 5 15 shows examples of TV polarity synchronization signals Note This oscillo...

Page 51: ...a measurement using the cursor proceed as follows 1 Press the V T 1 T OFF buttons to turn on the cursor and measurement readout 2 Press the button to select the seven measurement functions in the sequence as below V T 1 T OFF 3 Press the C1 C2 TRK button to select C1 cursor C2 cursor and tracking cursor 4 Rotate the VARIABLE control knob to position the selected cursor Press one of the VARIABLE co...

Page 52: ...rtical graticule line Use the following method as a guide to making rise time measurement c Typical 1 T cursor function for frequency measurement When the two cursors are superimposed at two edge points of the one period waveform by the C1 C2 TRK and VARIABLE controls the measurement value is displayed in frequency units at the top of the screen NOTE When the VOLTS DIV or the TIME DIV controls are...

Page 53: ...t operate The fuse should not normally fail unless a problem has developed in the instrument Determine and correct the cause of the problem before replacing with a fuse of the correct rating and type as detailed on the rear panel 6 2 Line voltage conversion The primary winding of the power transformer is tapped to permit operation from 100 120 or 230V 50 60Hz AC Conversion to a different voltage i...

Page 54: ... the oscilloscope use a soft cloth dampened in a solution of mild detergent and water Do not spray cleaner directly onto the oscilloscope as it may leak into the cabinet and cause damage Do not use chemicals containing benzine benzene toluene xylene acetone or similar solvents Do not use abrasive cleaners on any portion of the oscilloscope ...

Page 55: ...ISR 6051 OSCILLOSCOPE USER MANUAL 49 7 Block diagram ...

Page 56: ...ration contamination or abnormal conditions of operation or handling Any implied warranties arising out of the sale of this product including but not limited to implied warranties of merchantability and fitness for a particular purpose are limited to the above RS Components shall not be liable for loss of use of the instrument or other incidental or consequential damages expenses or economic loss ...

Page 57: ...Phase 2 No 618 Yan an Eastern Road Shanghai 200001 China Europe RS Components Ltd PO Box 99 Corby Northants NN17 9RS United Kingdom Japan RS Components Ltd West Tower 12th Floor Yokohama Business Park 134 Godocho Hodogaya Yokohama Kanagawa 240 0005 Japan North America Allied Electronics 7151 Jack Newell Blvd S Fort Worth Texas 76118 U S A South America RS Components Limitada Av Pdte Eduardo Frei M...

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