Digital 20MHz and 60MHz Oscilloscopes Model MS460
Contents
1. 1 55 Display Window 55 Resistance Measurements f r i 57 Measuring Diode Voltage f A 57 Continuity Test 58 Measuring Capacitance i a 59 Measuring DC Voltage 59 Measuring AC Voltage 60 Measuring DC Current 3 i 61 Measuring AC Current 3 s i 62 Data Hold Freeze Readings 63 Relative Measurements 64 Automatic Manual Range d 1 65 V3 0 7 2009 WARRANTY EXTECH INSTRUMENTS CORPORATION a FLIR company warrants this instrument to be free of defects in parts and workmanship for one year from date of shipment a six month limited warranty applies to sensors and cables If it should become necessary to return the instrument for service during or beyond the warranty period contact the Customer Service Department at 781 890 7440 ext 210 for authorization or visit our website www extech com for contact information A Return Authorization RA number must be issued before any product is returned to Extech The sender is responsible for shipping charges freight insurance and proper packaging to prevent damage in transit This warranty does not apply to defects resulting from action of the user such as misuse improper wiring operation outside of specification improper maintenance or repair or unauthorized modification Extech specifically disclaims any implied warranties or merchantability or fitne2. Figure 30 Save and Recall Waveforms Function Setting Menu refer to Table below Press the MENU button and use the up down arrow keys to scroll to FUNCTION Function menu Description Recall Factory Set the meter s settings to their factory default conditions Auto Calibration Perform an Auto calibration procedure Language Select the desired display language English Chinese Deutsch or Greek Auto calibration The Auto calibration function automatically configures internal parameters to maintain the sensitivity and accuracy of the meter Use the Auto calibration in the following cases e When the temperature changes by more than 5 degrees Celsius during operation e When operating the oscilloscope in a new bench top or field environment 1 Press MENU and select the FUNCTION menu using the MENU A or MENU Y key 2 Press F2 Auto calibration A message appears asking the user to remove all cables and probes from the oscilloscope 3 After removing all cables press F2 Auto calibration again The Auto calibration automatically starts and a status message appears To interrupt calibration press any key during the calibration 41 V3 0 7 2009 Automatic Ranging Measurements The oscilloscope can perform five 5 automatic measurements Frequency Period Mean voltage Peak to peak voltage and Cycle voltage true RMS Two measurement results can be displayed simultaneously on the screen The fun
3. Trigger control Storing Waveforms The oscilloscope can save four 4 waveforms that can be displayed on the screen along with the present waveform The recalled waveforms cannot be adjusted The waveform Store Recall menu is described in the following Table Function menu Setups Description Source CH1 Select the signal source of the waveform to save the CH2 waveform to save must be on the display MATH WAVE A B C and D Select the memory address for saving or recalling data Save Store the waveform of the selected signal source into the selected address Show ON Set ON to display the waveforms stored in address A OFF B C or D Choose OFF to exit this feature To save a CH 1 waveform in address A perform the following steps 1 Press the MENU key the function menu will appear at the right of the screen 2 Use the MENU A or MENU Y key to select Wave Save Four 4 selectable options will then appear at the bottom of the screen 3 Press the F1 key to select CH1 as the signal source 4 Press the F2 key to select Address A 5 Press the F3 key to save the waveform on CH1 in address A To display the saved waveform on the screen perform the following steps 6 Press F4 to select Start for Address A The waveform saved in Address A will be displayed in green The zero point voltage the time will display in purple 40 V3 0 7 2009 Refer to Figure 30 f 500 0KHZ Vp 200 0mvu IEEE
4. useful for observing waveform variations 5s Infinite Format YT Displays the relative relationship between vertical voltage and horizontal time XY Displays CH1 on the horizontal axis and CH2 on the vertical axis Carry Bitmap Data transmitted in bitmap format dots Vectors Data transmitted in vector format line Display Style The display style includes Vector and Dot display types as shown in Figure 28 and 29 38 V3 0 7 2009 IN ribera fene e inn EID E d I Figure 28 Dot Style CH1 OFF Vp 204 eeeteeeee ee Se EE H Figure 29 Vector Style Persistence The user can select the duration of time that past traces remain on the display The selections are 1 2 5 seconds Infinite and OFF XY Mode This mode is only applicable to simultaneous CH1 and CH2 measurements The X Y format plots the CH1 input as X axis and CH2 input as Y axis This display mode is convenient for viewing the phase relationship between CH1 and CH2 if the oscilloscope does not detect triggering the data appear in light spots 39 V3 0 7 2009 Description of Control Keys mM The CH1 VOL and CH1 ZERO keys for CH1 are used to set the horizontal scale and position B The CH2 VOL and CH2 ZERO keys for CH2 are used to set the vertical scale and position continuously The following functions are not available in the XY display mode B6 Reference or digital value waveform B Cursor mM Time base control E
5. A V CHM Zero 5 Press A yellow or Y yellow to adjust the vertical display position of waveform M Press yellow or yellow to adjust the display time factor for waveform M Refer to Figure 18 26 V3 0 7 2009 f 10 00KHZ Up 208 a rerrrg nme 11 MER E Figure 18 Waveform Mathematical Calculations USB mass storage device Save waveform data Connect a USB mass storage device to the USB port on the meter using the supplied cable Press the COPY key The current waveform data will then be saved the file names are automatically sequenced WAVE1 bin WAVE2 bin etc Now connect the USB Mass Storage device to a Personal Computer and use the supplied software to transfer and manipulate the stored data Note Refer to the HELP utility in the supplied software for further instructions 27 V3 0 7 2009 Advanced Oscilloscope Functions About this Chapter Advanced Oscilloscope functions are covered in this chapter Vertical Settings for CH1 and CH2 Each channel has its own independent vertical menu and each item can be set respectively based on the specific channel To make vertical CH1 and CH2 settings perform the following steps 1 Press the MENU key the function menu will appear at the right of the screen 2 Press MENU A or MENU Y to select CH1 SETUP Four 4 selectable options will appear at the bottom of the screen 3 Use the soft function keys F1 through F4 to adjust settings as desir
6. Figure 8 t 10 00KHZ Up 208 Figure 8 T Press lt yellow or gt yellow to adjust the time base horizontal position and press A yellow or V yellow to adjust the trigger horizontal position for Channel 2 8 Press OPTION again to display the following lt gt Time Base A Y Trig 1 See Figure 9 17 V3 0 7 2009 10 f 10 00KHZ Up 208 Figure 9 Press lt yellow or gt yellow to adjust the main time base and press A yellow or V yellow to adjust the trigger horizontal position for Channel 1 Press OPTION again to return to step 6 above Glossary of Terms Vertical scale factor The voltage amplitude represented by a division in the vertical direction of the display area through the adjustment of which the user can amplify or attenuate the signal and thus regulate the signal amplitude so that it is placed in the expected measurement range Vertical zero position Ground point through the adjustment of which the user can regulate the display position of the waveform on the screen Main time base The time value represented by a division in the horizontal direction of the display area Trigger horizontal position The time difference between the actual trigger point and the screen central line which will be displayed as O at the center point of the Screen Trigger level position The voltage difference between the actual trigger level and the zero position of the triggering signal s
7. Measurement Measuring AC Voltage To measure AC voltage refer to the following 1 Insert the black lead into the COM banana jack input and the red lead into the V QIC banana jack input 2 Press the V key and then press SET so that the ACV symbol appears at the top of the screen 3 Connect the red and black leads to the measured points and the AC voltage values of measured points will be displayed on the screen Refer to the example diagram in Figure 7 Figure 7 AC Voltage Measurement 60 V3 0 7 2009 Measuring DC Current To measure a DC current lower than 400 mA do the following 1 Insert the black lead into the COM banana jack input and the red lead into the mA banana jack input Use the A key and the SET key as needed to select the DCA mode the DCA symbol will appear at the top of the screen Ensure that the displayed unit of measure on the main reading screen is mA Use the F4 soft key to select mA if necessary Connect the red and black leads to the measured points on the circuit under test the DC current value will be displayed on the screen Refer to the example diagram in Figure 8 Figure 8 400mA DC Current Measurement To measure a DC current larger than 400 mA perform the following 1 4 Press the A key and the DCA symbol should appear at the top of the screen Use the SET key to select DCA if necessary Press the F5 soft key to select the 10A measurement mode the unit of measur
8. appear on the screen Auto Zero the Horizontal Trigger and Trigger Level Position To configure the instrument so that the horizontal trigger and the trigger level position automatically return to zero 1 Press the V key the horizontal trigger position will automatically return to zero 2 Pressthe R key the trigger level position will automatically return to zero Automatic Measurement Ranging The Oscilloscope offers five 5 ranges that adjust automatically as measurements are taken Two numeric readings can be displayed MEAS SET1 and MEAS SET2 selectable independently the measurements can be performed on the CH1 or CH2 waveform inputs To choose a frequency for CH1 perform the following procedure 1 Press the MENU key the function menu will appear on the right side of the screen 2 Press MENU A or MENU to select MEAS SET 1 Five selectable options will then be visible at the bottom of the screen 3 Press the F1 key and select Freq CH1 from the root mean square RMS option The MEAS SET 1 window color will change to red and display CH1 frequency To choose Peak Peak measurements for the CH2 input refer to the following 1 Press the MENU key the function menu will appear at the right side of the screen 2 Press MENU A or MENU Y key to select MEAS SET 2 Five 5 selectable options will appear at the bottom of the screen 3 Press the F4 key to select PK PK CH2 from the Peak Peak option The MEAS SET2 window col
9. falling trailing edge of the signal Coupling AC The DC component is blocked DC All components are allowed to pass HF Rjc The HF part of the signal is blocked and only the LF component is allowed LF Rjc The LF part of the signal is blocked and only the HF component is allowed SENS Set trigger sensitivity 36 V3 0 7 2009 Function menu Settings Description CH SEL CH1 Set trigger type and other parameters for CH1 CH2 Set trigger type and other parameters for CH2 Type Edge Set vertical channel trigger as edge trigger Video Set vertical channel trigger as video trigger Video type Normal For video signals with low black level Polarity Inverted For video signals with high black level Sync Line Set synchronous trigger in video line Synchronization Field Set synchronous trigger in video field Odd field Set synchronous trigger in video odd line Even field Set synchronous trigger in video even line Line NUM Set synchronous trigger in video Line NUM MODU NTSC Common video standard used in the U S Modulation PAL SECAM Least common standard common in Europe Line Increase Press F4 the Line value will increase Decrease Press F4 the Line value will decrease Glossary of Terms e Trigger modes There are three trigger modes Auto acquires signal continuously Normal acquires signal when trigger conditions are met and Single manually triggers the signal e Automatic trigger mode In this
10. item in the trigger mode menu matches the actual signal channel Check the trigger mode The edge trigger mode is typically used for most applications the video trigger mode is applicable for video signals Only when the proper trigger mode is applied can the waveform be stable Change the trigger coupling into the HF rejection and LF rejection to filter the HF or LF noise trigger by the interference No display when the RUN STOP key is pressed in oscilloscope mode Check whether the trigger mode in the trigger mode menu is in Normal or Single Shot and whether the trigger level is outside of the waveform s range In such conditions adjust the trigger level to be in the middle of the range or select the non auto trigger mode Additionally press the AUTO SET key and re try the previous suggestions When using average sampling in the sampling mode or when selecting a long display time in the oscilloscope display mode the display speed is slow this is normal 66 V3 0 7 2009 Appendices Appendix A Specifications OSCILLOSCOPE Unless otherwise indicated all technical specifications are applicable to the 10X probe attenuation switch setting The oscilloscope should meet the following requirements in order to meet the published specifications m The instrument should be allowed to run continuously for more than 30 minutes under the specified operating temperature If the operating temperature is exceeded by more than 5 degrees Celsiu
11. mA measurement mode Refer to the example in Figure 11 Figure 11 AC Current Measurement for 10A Freezing the Readings Data Hold You can hold the displayed readings at any time 1 Press the RUN STOP key to freeze the screen STOP will be displayed at the top right of the screen 2 Press the RUN STOP key again to resume normal measurement operation Refer to the example in Figure 12 63 V3 0 7 2009 Figure 12 Freezing the Readings Taking a Relative Measurement The meter can display a reading relative to a user selectable reference value Refer to the following discussion on how to make a relative measurement First program a reference value To do so take a measurement and when the desired reading is displayed press the A soft key until the A symbol is displayed at the top of the screen this indicates that the unit is in the Relative mode The reference value is shown on the display screen just below the relative mode symbol Now all subsequent readings in the main display area will be displayed relative to the reference value 64 V3 0 7 2009 Selecting the Automatic Manual Range Modes The default mode of the instrument is the automatic range To switch to the manual range perform the following steps 1 Repeatedly press the F1 MANUAL soft key until the desired range is selected on the meters display MANUAL will be displayed on the upper left hand corner of the meter s display
12. mode the oscilloscope can acquire a waveform without a triggering condition e Normal trigger mode In this mode the oscilloscope cannot acquire the waveform until it is triggered When no trigger is present the oscilloscope will display only the original waveform no new waveforms can be captured until a trigger is detected e Single mode In this mode the oscilloscope will detect a trigger and capture a waveform each time the user presses the RUN STOP key 37 V3 0 7 2009 Acquisition Mode The Acquiring Mode menu is described in the Table shown below Function menu Settings Description Sample The waveform data sampling time interval The sample mode accurately reconstructs the waveform but cannot respond to rapid changes and sudden peaks Peak Detect 50ns The peak detect mode captures rapid changes and max sudden peaks Average Multiple samples are averaged The average mode reduces the noise level for best results the waveform must be repetitive Averages 4 16 64 Select the number of samples to average or 128 Display Setting The Display Setting menu is described in the following table Function menu Settings Description Type Vectors Shows the waveform as a smooth line connecting each data point Dots Shows the waveform as a collection of independent data points Persist OFF 1s Sets the duration of time that previous waveforms remain 2s on the display
13. not use abrasive chemical detergents AN Warning Before use please confirm that the instrument is dry so as to avoid electrical short circuits and personal injury Storage of Instrument If the test tool is to be stored for an extended time the lithium battery must be charged before storage 72 V3 0 7 2009 Appendix C Charging the Instrument The lithium battery may ship un charged The battery must be initially charged for 4 hours the instrument must be turned off during charging The battery can supply power for 4 hours after being charged completely When supplying power by using the battery a battery indicator is displayed on the top of the screen The battery symbols appear as follows al and 1 where 0 indicates that the battery can only be used for about 5 minutes To charge the battery and power the instrument connect the oscilloscope using the supplied power adapter The charging speed can be increased by turning off the meter Note To avoid battery overheating during charging do not charge the meter in an area where the ambient temperature exceeds the specified operating temperature Note The meter can be charged for extended periods After it is charged it switches to a low charge status and may remain in the charging configuration for extended periods Replacing the Lithium Battery Unit It is usually not required to replace the battery but if it is required only qualified personnel should carry out this oper
14. on a menu list MENU Show Hide menu MENU Choose a lower item on a menu list OPTION Used in combination with the four 4 yellow arrow keys This button is used to set the main time base trigger horizontal position and trigger vertical position Also used to adjust the display multiplier factors and display vertical position during waveform calculation Further it is used to adjust cursor 1 V1 or T1 and cursor 2 V2 or T2 position during cursor measurements A yellow Oscilloscope UP arrow adjustment key Y yellow Oscilloscope DOWN arrow adjustment key gt yellow Oscilloscope FORWARD adjustment key lt yellow Oscilloscope BACKWARD adjustment key A Selects DMM Current measurement mode V Selects DMM Voltage measurement mode R Selects DMM impedance diode continuity capacitance measurement mode SET Toggle AC DC in the current or voltage multimeter measurement modes also switches between resistance diode and capacitance modes while in the resistance mode 12 V3 0 7 2009 Basic Oscilloscope Functions About this Chapter This chapter provides introductory Oscilloscope instructions This introduction does not cover all of the oscilloscope capabilities but provides basic examples of menu navigation and operations Detailed instructions are provided in the Advanced Oscilloscope functions section Powering the Oscilloscope Connect the oscilloscope to an AC power source using the supplied AC adaptor If
15. the battery is charged the oscilloscope may be powered by the supplied and installed Li ion battery The meter will run for up to four 4 hours on a full charge Turn the oscilloscope on by pressing the power key Upon power up the instrument performs a self check The display will show the press any key to continue screen Main Oscilloscope Display Screen sere MENU 16 15 14 12 11 10 Figure 4 Oscilloscope Display Screen 13 V3 0 7 2009 Description of Oscilloscope Display Screen Figure 4 1 2 10 11 12 13 14 15 16 17 18 Battery power status icon a E a anal Auto measurement screen No 1 f for frequency T for cycle V for average value Vp is the peak peak value and Vk is the root mean square value Auto measurement screen No 2 Horizontal triggering position The difference in time between the horizontal triggering position and the Screen s centerline zero when the pointer is in the center of the screen The trigger modes Auto The oscilloscope is in the automatic mode and displaying the waveform in the non trigger mode Trig d The oscilloscope has detected a trigger and is displaying the information generated after the trigger Ready All pre triggered data has been captured and the oscilloscope is ready to receive trigger signals Scan The oscilloscope records and displays waveform data continuously Stop The oscilloscope has stopped collecting wave
16. the following Cursor2 lt p gt Cursor1 A V Use A yellow and V yellow to move V1 up and down the voltage value relative to the zero position will display at the bottom of the screen Use lt yellow and gt yellow to move V2 up and down the voltage value relative to the zero position will display at the bottom of the screen The display will also show the result of V1 V2 Refer to Figure 36 a 46 V3 0 7 2009 Figure 36 a Use the Cursor for a Voltage Measurement When the MENU button is pressed the data table appears as shown in Figure 36 b T 1 000ms 833 Figure 36 b Data Table To use the cursor for a Time measurement on CH1 perform the following steps 1 2 Press the MENU key the function menus will appear at the right of the screen Press the MENU A or MENU key to select Cursor measurement Two 2 selectable options will then appear at the bottom of the screen Press the F1 key to select the measurement type Time Two vertical dashed lines T1 and T2 will appear on the screen Press the F2 key and select the channel CH1 Press OPTION and the display will show Cursor2 Cursor1 A V 47 V3 0 7 2009 Press A yellow or V yellow to move T1 left and right the value of T1 relative to the middle of the screen will display Press lt yellow or yellow to move T2 left and right the value of T2 relative to the middle of the screen will display as shown in Figur
17. the red and black leads to the test points If the resistance value is lower than 50Q the meter will emit an audible tone The meter display will also show the resistance as shown in example Figure 4 Figure 4 Continuity Test 58 V3 0 7 2009 Measuring Capacitance To measure Capacitance refer to the following 1 Insert the black lead into the COM jack and the red lead into the V Q C jack 2 Press the R key An R appears at the top of the screen 3 Press the SET key until the C appears at the top of the screen 4 Connect the black and red leads to the capacitor or circuit under test the meter will display the reading Unit of measure Farad Notes To improve accuracy when the measured value is lower than 5 nF select the lowest capacitance range and use the Relative mode Please allow approx 30 seconds for capacitance measurements larger than 40uF Refer to the example diagram in Figure 5 Figure 5 Capacitance Measurement Measuring DC Voltage To measure DC voltage refer to the following 1 Insert the black lead into the COM banana jack input and the red lead into the V QIC banana jack input 2 Press the V key and the DCV symbol will appear at the top of the screen 3 Connect the red and black test leads to the measurement points on the circuit under test the voltage value will be displayed on the screen Refer to the example diagram Figure 6 59 V3 0 7 2009 Figure 6 DC Voltage
18. to DC coupling and AUTO triggering mode If the user attempts to manually adjust the vertical position voltage division trigger level or time scale while in the Autoscale mode the meter will automatically exit the Autoscale mode When video triggering the horizontal time scale is 50us 45 V3 0 7 2009 Cursor Measurements Two cursors can be used to make instantaneous Time and Voltage measurements for CH1 and CH2 signals Refer to the following table for more information Function menu Settings Description Type OFF Exit the cursor measurement mode Voltage Display voltage measurement cursor and menu Time Display time measurement cursor and menu Source CH1 Select the waveform channel on which the cursor CH2 measurement will be performed Delta MS460 Display the difference between CH1 and CH2 values Cursor 1 MS460 Data for cursor 1 Cursor 2 MS460 Data for cursor 2 To use the cursor for a Voltage measurement on CH1 perform the following steps 1 2 Press the MENU key the function menu will then display at the right of the screen Press the MENU A or MENU key to select Curs Meas Five 5 selectable options MS46 or two 2 selectable options MS420 appear at the bottom of the Screen Press the F1 key to select the measurement type Voltage Two dashed lines V1 and V2 will appear on the screen Press the F2 key to select CH 1 Press OPTION and the display will show
19. 2009 f 10 01HHZ CH1 OFF me 5 0Quv CH2 50 0mv Figure 43 Window Zoom PC Data Transmission For PC data transmission perform the following steps 1 oa F o Press MENU the function menu will then appear on the right side of the screen Press MENU A or MENU Y to select the display setting mode DISP SET the display will show four 4 selectable options at the bottom of the screen Press the F4 key select Bitmap or Vectors Connect the oscilloscope to the PC using the supplied data transmission cable Install and open the supplied software Use the software as described in the software s HELP utility 53 V3 0 7 2009 User s Guide EXTECH INSTRUMENTS A FLIR COMPANY Model MS460 60 MHz Digital Oscilloscope Model MS420 20 MHz Digital Oscilloscope SECTION TWO Multimeter Operation CF1 e ED CrSD C G Gd SS stots V3 0 7 2009 Using the Multimeter About this Chapter This chapter provides step by step instructions for using the Multimeter functions These instructions also provide basic examples of menus and other basic operations Making Meter Connections Use the four 4 mm safety banana jack inputs for the Meter functions COM V O C 10A mA The four 4 banana jack inputs on the face of the meter are L to R 10A cur
20. 3 Multimeter input jacks L to R Current 2A 10A input mA Current input COM ground input Voltage Resistance Capacitance input 4 Oscilloscope probes 5 Oscilloscope channel inputs 10 V3 0 7 2009 Front Panel and Keypad Overview 1 2 3 4 EXTECH wsa D Figure 3 V3 0 7 2009 Description of Meter Front Panel and Keypad Figure 3 1 N OAR WN 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 AC adapter Port RS 232C Port USB Port USB Mass Storage Port Power switch F1 F5 Soft key options AUTO SET In the Scope mode the meter automatically selects the horizontal vertical scale and trigger level COPY Press to store the waveform data into a USB storage device A Red Adjust the horizontal scale for Channel 1 VOLTS POSITION Red Switch between voltage and horizontal scales for Channel 1 Y Red Adjust the horizontal scale for Channel 1 A Blue Adjust the horizontal scale for Channel 2 VOLTS POSITION Blue Switch between the voltage and horizontal scales for Channel 2 Y Blue Adjust the horizontal scale for Channel 2 RUN STOP Start Stop the waveform capture process BACKLIGHT Turn the display backlight ON and OFF DMM OSC Operation mode switch between oscilloscope and multimeter MENU A Choose a higher item
21. 5 x 4cm Weight 1 4 Ibs 645 g Power consumption lt 6W Display type 3 8 color liquid crystal display Display resolution 320 horizontal x 240 vertical pixels Display color 4096 colors Power Adapter Power supply 100 240 V AC 50 60Hz Power output 8 5 VDC Current output 1500 mA Ambient Environmental Specifications Temperature Operation Temperature On Battery power With Power adapter Storage Temperature 0 to 50 C 32 to 122 F 0 to 40 C 32 to 104 F 20 to 60 C 4 to 140 F Relative Humidity and Temperature Operation 0 to 10 C 32 to 50 F 10 to 30 C 50 to 86 F 30 to 40 C 86 to 104 F 40 to 50 C 104 to 122 F Storage 20 to 60 C 4 to 140 F no condensation 95 96 75 96 45 96 no condensation 71 V3 0 7 2009 Appendix B Maintenance and Cleaning Maintenance Do not store or place this instrument where the liquid crystal display LCD may be directly exposed to sunlight for extended periods Warning Do not allow the instrument to become wet Cleaning Inspect the instrument and the probe frequently in accordance with operating conditions Clean the outer surface of the instrument according to the following steps 1 Wipe the outside of the instrument and the probe using a soft cloth Use care when cleaning the LCD display screen 2 Use a slightly damp cloth and mild detergent when cleaning and only clean the instrument when it is powered down Do
22. NU Y keys to navigate and select menu functions 3 Use the soft keys F1 F5 to select an available option f 10 00KHZ Vp 208 Figure 5 Menu Manually Setting the Trigger Position and Time Base Use the OPTION key to set the vertical trigger position the main time base and the horizontal trigger position during Edge triggering and Video Triggering or vertical trigger position for Horizontal time base and vertical trigger position and horizontal level position during an Alternate trigger The following example shows how to use the OPTION key to change a setting For triggering in edge and video trigger mode 1 Press the OPTION key once the following will appear at the screen s bottom left lt gt Time Base A Y Trig 15 V3 0 7 2009 f 9 998KHZ Up 212 IEEE Figure 6 2 Press 4 yellow or gt yellow to adjust the main time base Press A yellow or V yellow to adjust the trigger horizontal position 3 Press OPTION again and the following will appear lt gt Time A V Trig See Figure 7 f 10 00KHZ Up 208 Figure 7 4 Press lt yellow or gt yellow to adjust time base horizontal position press A yellow or V yellow to adjust trigger position 5 Use the OPTION key to toggle between the two modes described above 16 V3 0 7 2009 When triggering in the Alternate trigger mode 6 Press OPTION and the following will appear lt gt Time A Y Trig 2 See
23. User s Guide EXTECH INSTRUMENTS A FLIR COMPANY Digital 20MHz and 60MHz Oscilloscopes Model MS460 60MHz Model MS420 20MHz EXTECH MS420 D CED CD ae WS amp E OGO 6 INTRODUCTION Congratulations on your purchase of the Extech Digital Oscilloscope This manual is divided into two sections Section One for the Oscilloscope functions and Section Two for the MultiMeter functions This meter is shipped fully tested and calibrated and with proper use will provide years of reliable service V3 0 7 2009 TABLE OF CONTENTS GENERAL INFORMATION Warranty 5 Calibration and Repair Services 5 Technical Support Information 5 Product Contents 6 Safety Information g 1 7 Input Connections i 10 Front Panel and Control Keys Overview 11 Recall Factory Default Settings 19 PC Data Transmission 53 FAQ s f 1 66 Appendix A Specifications i 67 Appendix B Maintenance and Cleaning 72 Appendix C Battery charging and replacement 1 73 Appendix D Setting the Real Time Clock MS460 1 74 SECTION ONE OSCILLOSCOPE Basic Instructions on Using the Oscilloscope f 13 Powering the Oscilloscope 13 Main Oscilloscope Display Screen 1 13 Menu Description f 15 S
24. ation Use only the same type of lithium battery currently installed in the meter To access the battery remove the three 3 Philips screws on the rear of the instrument at the top of the stand behind the rubber protective jacket 73 V3 0 7 2009 Appendix D Set the Real time clock MS460 only 1 Press the MENU key the function menu will display on the right side of the screen 2 Use the MENU A or MENU Y key to select SYS STAT four 4 options will appear at the bottom of the screen 3 Use the F4 key to select the MISC option and the system time along with other information will appear as shown below 4 Press OPTION to enter the Time setting mode The highlighted field can be edited 5 Use the lt and gt keys to highlight a value for editing Use the A and V arrow keys to change the corresponding value for year month date hours minutes and second 6 Press the MENU Aup arrow key to exit the programming mode 74 V3 0 7 2009
25. ction menu for automatic measurements is described in the following Table Function menu Settings Description Freq CH1 Measure the frequency of CH1 CH2 Measure the frequency of CH2 Period CH1 Measure the period of CH1 CH2 Measure the period of CH2 Mean CH1 Measure the average value of CH1 CH2 Measure the average value of CH2 Peak Peak CH1 Measure the peak to peak value of CH1 CH2 Measure the peak to peak value of CH2 Cyc RMS CH1 Measure Root Mean Square RMS value of CH1 CH2 Measure Root Mean Square RMS value of CH2 To measure the frequency of CH1 with MEAS SET 1 and the frequency of CH2 with MEAS SET 2 perform the following steps 1 Press the MENU key the function menu will appear on the right side of the screen 2 Press the MENU A or MENU Y key to select MEAS SET 1 Five 5 selectable options will then appear at the bottom of the screen 3 Press the F1 key to select the frequency measurement of CH1 The measurement window will appear red in color and show the frequency of CH1 4 Press the MENU A or MENU key to select MEAS SET 2 Five 5 selectable options will then appear at the bottom of the screen 5 Press the F4 key to select the peak to peak value of CH2 The measurement window will appear blue in color and show the peak to peak value of CH2 f 10 01KHZ Up 208 0mu Figure 31 Automatic Measurements 42 V3 0 7 2009 Autoscale MS460 only Autoscale enables th
26. e 37 a T 1 000ms f 779 THZ Figure 37 a Time Measurement using cursor When the MENU button is pressed the data table appears as shown in Fig 37 b T 1 000ms 78 Figure 37 b Data Table 48 V3 0 7 2009 Six 6 Digit Frequency Counter Cymometer MS460 only The frequency counter measurement range is 2Hz 60MHz When the meter is configured for edge triggering it can only measure one channel the channel that is triggering When the triggering mode is set to Alternating trigger the instrument can measure both channels CH1 and CH2 To configure the Frequency Counter for two channel operation 1 Press MENU and the function menu will appear on the right side of the screen 2 Use the MENU A or MENU V key to select DISP SET Display Setting five 5 options will appear at the bottom of the screen 3 Use the F5 key to select ON refer to figure 38 PUUU EPP PE PEEP PEEP EEE PEPER CEES E EEE REET TERE EEE EET EER 5 OFF YT Bitmap Fig 38 Frequency Counter Display 49 V3 0 7 2009 Square wave output test signal 5V 1 KHz MS460 only The 5V Square Output is available on the jack at the left side of the meter The 5V digital output has a frequency of 1 KHz and can be used to adjust the probe as shown as Fig 39 Fig 39 Square wave test signal Fig 40 5V square wave output adaptor 50 V3 0 7 2009 System Status Menu The system status menu is used to display configuration informati
27. e 85pf 115pf 14 5pf 17 5pf Input voltage 150 V DC 300 V DC MULTIMETER Voltage VDC Input Impedance 10MQ Max Input Voltage 1000V DC or AC peak to peak value Range Accuracy Resolution 400 0mv 1 5 2 digit 100uV 4 000V 1 1 digit 1mV 40 00V 10mV 400 0V 100mV Voltage VAC Input Impedance 10MQ Max Input Voltage 750V AC Frequency range from 40Hz to 400Hz Range Accuracy Resolution 4 000V 1 3 digits 1mV 40 00V 10mV 400 0V 100mV Direct Current DC Range Accuracy Resolution 40 00mA 1 5 1 digit 10uA 400 0mA 1 5 1 digit 100uA 10A 3 3 digit 10mA 69 V3 0 7 2009 Alternating Current AC Range Accuracy Resolution 40 00mA 1 5 3 digit 10uA 400 0mA 2 1 digit 100uA 10A 5 3digit 10mA Resistance Range Accuracy Resolution 400 0 Q 1 3 digit 0 10 4 000KQ 1 1 digit 10 40 00KQ 100 400 0KQ 1000 4 000MQ 1KQ 40 00MO 1 5 3 digit 10KQ Capacitance Range Accuracy Resolution 51 20nF 3 3 digit 10pF 512 0nF 100pF 5 120uF 1nF 51 20uF 10nF 100uF 100nF Diode Voltage reading 0 V 1 5 V Continuity Test Audible tone when resistance is lower than 500 70 V3 0 7 2009 General Specifications Dimensions 7 1 x 4 5 x 1 6 18 x 11
28. e instrument to automatically configure the trigger mode voltage division and time scale according to the type amplitude and frequency of a signal The menu is as follows Function Menu Setting Instruction Autoscale OFF Turn OFF Autoscale ON Turn ON Autoscale Mode Vertical Adjust vertical scale without changing horizontal setting Horizontal Adjust horizontal scale without changing vertical HORI VERT setting Adjust the vertical and horizontal settings Display one or two periods Display multi period waveforms To measure CH1 voltage 1 Press MENU the function menu will appear on the right side of the screen 2 Press MENU A or MENU Y and choose AUTOSCALE three 3 options will appear at the bottom of the screen 3 Press F1 to select ON 4 Press AUTOSET to enter the Autoscale mode the symbol 8 flickers every half second at the top left of the display 5 Press F2 to select the Horizontal Vertical mode 6 Press F3 MUAYAS and refer to the display examples below 43 V3 0 7 2009 T 1 000ms T 1 000ms Fig 34 Vertical mode multi period waveform 44 V3 0 7 2009 T 1 000ms Fig 35 Horizontal mode multi period waveform Notes 1 In Autoscale mode the meter can automatically set the Trigger mode Edge Video and Alternate and Type Edge Video In Autoscale mode the meter switches to YT Mode Auto from XY mode STOP In Autoscale the meter defaults
29. e on the main reading screen should be A Connect the red and black test leads to the measured points on the circuit under test The DC current value will be displayed on the screen Press the F4 soft key to return to the mA measurement mode Refer to the example in Figure 9 61 V3 0 7 2009 Figure 9 10A DC Current Measurement Measuring AC Current To measure AC current lower than 400 mA perform the following 1 Insert the black lead into the COM banana jack input and the red lead into the mA banana jack input 2 Press the A key and then the use the SET key to select the ACA mode The ACA symbol will appear at the top of the screen when selected 3 Use the F4 soft key to select the mA mode 4 Connect the red and black leads to the measured points on the circuit under test The AC current value will be displayed on the screen Refer to the example in Figure 10 Figure 10 400mAAC Current Measurement 62 V3 0 7 2009 To measure AC current larger than 400 mA perform the following 5 Press the A key and use the SET key to select the ACA mode ACA symbol will appear at the top of the screen when selected 6 Press the F5 soft key to select the 10A measurement mode the unit of measure on the main reading screen should be A 7 Connect the red and black test leads to the measured points on the circuit under test The AC current value will be displayed on the screen 8 Press the F4 soft key to return to the
30. ed Refer to Figure 19 Figure 19 Vertical Settings 28 The following Table describes the Vertical Channel menu Function Setting Description menu Couplin AC The dc component in the input signal is blocked ping DC The ac and dc components of the input signal are available Charnel OFF Close the channel ON Open the channel 1X p 10X Select the desired probe attenuation robe 100X 1000X inverted OFF Waveform is displayed normally ON Open the Invert function for the waveform setting Setting the Channel Coupling CH1 will be used in this example Press F1 Coupling and then AC to set AC coupling The DC component contained in the tested signal is blocked Press F1 Coupling and then DC to set DC coupling Both DC and AC components contained in the tested signal are permitted Refer to Figures 20 and 21 f 10 OOKHZ CH2 OFF irri rr rer rn Figure 20 AC Coupling 29 V3 0 7 2009 f 10 00KHZ Figure 21 DC Coupling Open and Close Measurement Channels CH1 will be used in this example Press the F2 Channel key and then OFF to Close CH1 Press the F2 Channel key and then ON to Open CH1 Setting the probe attenuation To prevent excessive input voltage set the probe attenuation level to the 10X position Next magnify the display by 10X to match the displayed amplitude to the actual amplitude Press F3 Probe to adjust the probe attenuation level Table Probe atten
31. etting the Trigger Position and Time Base j i 15 Oscilloscope Input Connections f 19 Measure Unknown Signals Auto Set feature 20 Auto Zero the Horizontal Trigger 20 Automatic Ranging Measurements 20 Data Hold f 2 21 Average Mode to Smooth Waveforms 22 Persistence Mode superimpose waveforms 22 Peak Detect Glitch Capture 1 23 AC Coupling Mode 24 Reverse Waveform Polarity f 25 Mathematical Functions E 26 USB Mass Storage 27 V3 0 7 2009 Advanced Oscilloscope Functions s 28 Vertical Settings for CH1 and CH2 28 Channel Coupling 29 Open and Close Measurement Channels F 30 Setting the Probe Attenuation i 30 Invert a Waveform display 30 Mathematical Function Menu Settings 31 Setting up the Trigger System 1 32 Trigger Control 33 Acquisition Mode J 38 Display Settings 38 Storing Waveforms in the meter f 40 Function Settings Menu i 41 Auto Calibration 1 i 41 Auto Range Measurements i 42 Autoscale Mode MS460 43 Cursor Measurements 3 46 Frequency Counter MS460 49 Square wave output MS460 f 50 System Status Menu f f F 51 Time Base Mode 1 52 SECTION TWO MULTIMETER FUNCTIONS F 54 Connecting the meter
32. form data Red and blue trigger pointer shows vertical position of alternate triggers The trigger pointer turns green when it reaches an edge trigger or a video trigger Hide or View the menu using the MENU key Menu setting options Each menu has its own setting options The value of the trigger voltage level The trigger signal source is shown The value of the primary time base These graphics present the coupling modes for channel 2 CH2 The graphic indicates AC the graphic indicates DC The vertical Voltage units scale for CH2 The coupling mode for CH1 The graphic indicates DC The vertical Voltage units scale for CH1 The blue pointer shows the ground point for the waveform on CH2 zero position If this pointer is not shown the channel has not been opened OPTION Each option prompt has its own selections and operations The red pointer shows the ground point of the waveform for CH1 zero position If this pointer is not shown the channel has not been opened Waveform display area A red waveform represent CH1 a blue waveform represents CH2 amp o n indicates AC the graphic 14 V3 0 7 2009 Menu Description The following explains how to navigate the menus to select a function 1 Press the MENU key to open the Function Menu The Menu appears on the right of the screen with the corresponding options available on the bottom of the screen Press MENU again to hide the Function Menu 2 Usethe MENU A or ME
33. he specified manner to prevent danger and hazard to products and persons A Warning To avoid fire or electrical shock please use the proper power adapter Use only the power adapter recommended by the manufacturer A Warning To avoid fire or electrical shock do not connect meter to more than 42V peak 30Vrms or on circuits of more than 4800VA Use only the insulated voltage probes test leads and adapter supplied with the test tool or as indicated by Extech as suitable for the Oscilloscope amp Multimeter Before use inspect voltage probes test leads and accessories for mechanical damage Replace the equipment when it appears damaged Remove all probes test leads and accessories when not in use Always connect the power adapter first to the AC outlet before connecting it to the Oscilloscope amp Multimeter Do not apply voltages that exceed 400 V from earth ground to any input when measuring in a CAT Il environment Do not apply voltages that exceed 400 V to the isolated inputs when measuring in a CAT Il environment Use caution when using 1 1 test leads since the probe tip voltage will be directly transmitted to the Oscilloscope amp Multimeter Do not use exposed metal BNC or banana plug connectors Do not insert metal objects into the connectors Always use the Oscilloscope amp Multimeter in the manner specified Voltage ratings mentioned in the warnings are provided as working voltage limits They re
34. ing the Polarity of the Displayed Waveform To invert the input CH1 waveform perform the following steps 1 Press the MENU key the function menu will appear at the right side of the screen 2 Press MENU A or MENU Y to select CH1 setting Four 4 selectable options will appear at the bottom of the screen 3 Press the F4 key to select Inverted The CH1 inverted waveform will then be displayed on the screen Refer to Figure 17 25 V3 0 7 2009 f 10 00KHZ CH2 OFF Figure 17 Inverted Waveform Using Mathematical Functions on Waveforms When adding CH1 CH2 subtracting CH1 CH2 CH2 CH1 multiplying CH1 CH2 or dividing CH1 CH2 the input waveforms of CH1 and CH2 the oscilloscope will display the mathematical result waveform M and the input waveforms of CH1 and CH2 on the screen The Mathematical functions perform a point to point calculation on the waveforms CH1 and CH2 To use a Math function perform the following steps 1 Press the MENU key the function menu will appear at the right side of the screen 2 Press MENU A or MENU Y to select WAVE MATH Five 5 selectable options will appear at the bottom of the screen 3 Press the F3 key to select CH1 CH2 the calculation resulting waveform M green will then appear on the screen Press the F3 key again to exit the Waveform Calculation mode 4 Press OPTION and the screen will show the following on the bottom left lt gt CH Math Volts Div
35. k levels Inverted Solifts CH1 Select CH1 as the trigger source CH2 Select CH2 as the trigger source Line Set synchronous trigger in video line Field Set synchronous trigger in video field Sync Odd field Set synchronous trigger in video odd line Synchronization Even field Set synchronous trigger in video even line Line NUM Set synchronous trigger in video Line NUM NTSC National Television System Committee standard MODU Modulation most common PAL SECAM Less common video standard largely used in Europe Line NO diea Press F3 the Line value will increase Decrease Press F3 the Line value will decrease 35 V3 0 7 2009 Alternate trigger In Alternate trigger mode the trigger signal is taken from two vertical channels Alternate trigger mode can be used to observe two signals of differing frequencies From this menu the user can set a different trigger type for two separate vertical channels Refer to Figure 27 f 10 01KHZ Vp 208 Figure 27 Alternate Trigger The Alternate triggering menu is described in the following table Function menu Settings Description CH SEL CH1 Set trigger type and other parameters for Channel 1 CH2 Set trigger type and other parameters for Channel 2 Type Edge Set vertical channel trigger as edge trigger Video Set vertical channel trigger as video trigger Edge type Rising Triggering on the rising leading edge of the signal Falling Triggering on the
36. lectable options will then be displayed at the bottom of the screen Press the F3 CH1 CH2 key and waveform M appears on the screen Press the F3 key again to close waveform M Press OPTION and the display will show the following CH Math Volts Div A W CHM Zero Press lt yellow or yellow to adjust the range of the M waveform Press A yellow or Y yellow to adjust the position of the M waveform Refer to Figure 22 31 V3 0 7 2009 f 10 00KHZ Vp 208 DERI mme 00v CH2 100my Ru Figure 22 Waveform Mathematics Setting the Trigger System The trigger determines when the acquisition and display of waveform data occurs When starting to acquire data the oscilloscope collects sufficient information to draw the waveform at the left side of the triggering point While waiting for a triggering condition the oscilloscope gathers data continuously After a trigger is detected the oscilloscope gathers data continuously to draw the waveform at the right side of the triggering point To set a trigger mode perform the following steps 1 Press the MENU key the function menu will appear at the right of the screen 2 Press MENU A or MENU to select TRIG MODE Five 5 selectable options will then be available at the bottom of the screen 3 Use the soft keys F1 to F5 to select and configure the desired options 4 Press OPTION the following will appear on the display during edge triggering a
37. lloscope converts the collected analog data into digital data for each of the following three modes Sampling Peak Detect and Averaging Sampling The waveform sampling resolution in seconds Waveforms that change faster than the sample duration will not be accurately captured Peak value detection In peak detect mode the meter can capture very narrow pulses down to 50ns Averaging values The oscilloscope averages a selectable number of measurements Random noise can be minimized in this mode Duration time A waveform can be held as a new waveform is displayed The amount of time the previous waveform is displayed is the duration time Roll scan The oscilloscope updates the waveform sampling points by scrolling the screen from left to right applicable only to primary time base settings above 50ms Selecting AC coupling After a reset the Oscilloscope is dc coupled so that ac and dc voltages appear on the screen Use ac coupling to observe a small ac signal that rides on a dc signal To select ac coupling perform the following steps 1 2 Press the MENU key the function menu will appear at the right side of the screen Press MENU A or MENU Y to select the CH1 Setting Four 4 selectable options appear at the bottom of the screen Press the F1 key and select AC The AC coupling icon will appear on the screen 24 V3 0 7 2009 Refer to Figure 16 f 9 997KHZ CH2 OFF 4 Figure 16 AC Coupling Revers
38. nd video triggering modes lt gt Time lt P gt Time Base A V Trig A Y Trig During alternate triggering the following will be displayed lt P gt Time Base lt gt Time A V Trig1 A V Trig2 5 Press A yellow or yellow to adjust the vertical trigger position Press yellow or gt yellow to adjust the time base horizontal position or adjust the horizontal position 32 V3 0 7 2009 Triggering Control There are three triggering modes Edge triggering Video triggering and Alternating triggering Each trigger mode has its own function menu Edge triggering The edge trigger triggers on the incoming signal edge Use the edge trigger for all signals except for video Video triggering Perform video field trigger or line trigger on standard video signals Alternate trigger Use this mode when the CH1 and CH2 signal frequency differs The following describes the Edge triggering Video triggering and Alternating triggering menus respectively Edge Triggering Edge triggering is a mode by which triggering occurs at the threshold of the input signal s edge With Edge triggering selected the trigger occurs on the rising or falling edge of the input signal Figure 23 f 10 00KHZ Up 208 Ma rrrrrrr ng Figure 23 Edge Trigger 33 V3 0 7 2009 The Edge triggering menu is described in the following table Function Settings Description menu Slope Rising T
39. o hold a displayed waveform on the display while at the same time superimposing the current waveform The user can select the amount of time number of seconds or infinite to retain the displayed waveform or set the feature OFF Refer to the following 1 Press the MENU key the function menu will appear on the right side of the screen 2 Press MENU A or MENU Y to select DISP SET Four 4 selectable options will appear at the bottom of the screen 22 V3 0 7 2009 3 Press the F2 key to select 1 sec 2 sec 5 sec infinite or OFF Select a 1 2 or 5 second waveform display duration as desired When Infinite is selected the waveform will remain on the screen indefinitely When OFF is selected the Persistence function has no effect on displayed waveforms Refer to Figure 14 CH1 OFF Vp 210 0mu plolsobediehiepiefebeblepe Figure 14 Persistence Mode to Observe Dynamic Signals Using Peak Detection to Capture Glitches Use Peak Detect to display events glitches or other asynchronous waveforms down to 50 ns nanoseconds 1 Press the MENU key the function menu will appear at the right side of the screen 2 Press MENU A or MENU Y to select the ACQU MODE Four 4 selectable options will appear at the bottom of the screen 3 Press the F2 key to select Glitch Detect Refer to Figure 15 23 V3 0 7 2009 3 997KHZ CH2 OFF Figure 15 Peak Detection Glossary of Terms Collecting mode The osci
40. on concerning horizontal vertical trigger and other systems Follow the steps below to check status 1 Press the MENU key the function menu will then appear at the right side of the screen 2 Press the MENU A or MENU Y key to select SYSTEM STAT Four 4 selectable options will then appear at the bottom of the screen 3 Sequentially press F1 through F4 to view the corresponding status information Refer to Figure 41 Figure 41 System Status 51 V3 0 7 2009 Main Time Base Mode The time base mode menu is explained as the following table Function menu Setting Explanation Main Time Base Horizontal main time base Zone Window Use the two cursors to define a zoom window area Window Full screen display To zoom in on a small area of the display perform the following steps 1 2 Press MENU to view the function menu on the right side of the screen Press MENU A or MENU to select the TIME MODE Three 3 selectable options will then appear at the bottom of the display Use the Soft keys F1 F2 and F3 to select the Main Time Base Zone Window or Window functions as described in the Table above Use the OPTION key and the 4 yellow and yellow keys to adjust and vary the Time Base and size of the window zoom Refer to Figures 42 and 43 f 10 02KHZ CH1 OFF dr en eel ree one E 4 16 00us PUE Figure 42 Original Window Setting 52 V3 0 7
41. or turns to blue and displays the peak peak value for the CH2 input 20 V3 0 7 2009 Refer to Figure 11 Figure 11 Automatic Scope Measurements Data Hold Freezing the Displayed Reading To freeze any displayed reading or waveform follow these steps 1 Press the RUN STOP key to freeze the screen STOP appears at the top right of the screen 2 Press the RUN STOP key again to resume normal mode Refer to Fig 12 f 10 01KHZ Up 208 Figure 12 Freezing the Screen 21 V3 0 7 2009 Using the Average Mode to Smooth Waveforms Use the Average mode to smooth the displayed waveform multiple data samples will be averaged The number of samples to average is selectable from 4 16 64 up to 128 Note For best results the waveform must be repetitive As the number of average samples increases the waveform updating time increases Refer to the following 1 Press the MENU key the function menu will appear on the right side of the screen 2 Press MENU A or MENU Y to select the ACQU acquisition mode Four 4 selectable options will display at the bottom of the screen 3 Press the F3 key to select Average Factors and then press the F4 key to jump to Averages 16 The meter then averages 16 samples or acquisitions and displays the final result Refer to Figure 13 CHZ OFF f 1 001KH2 Figure 13 Average Factor Sampling Mode Persistence Mode superimposing waveforms Persistence Mode allows the user t
42. orage connection cable Extension module for low capacitance measurements Probe adjustment tools USB or Serial PC Communication cable ofp WO 5 Ur eS VN User manual 10 CD ROM Software Program 11 Carrying Case Figure 1 Supplied Equipment V3 0 7 2009 Safety Information Please read the user manual before use to ensure safety and precision Safety Symbols and Terms Safety Symbols These symbols may appear in this manual or on the instrument LN warning Warning identifies conditions amp actions that pose a hazard to the user A Caution Caution identifies conditions and actions that may damage the product or external equipment DANGER Refer to the Protective Chassis Earth High Voltage Manual Conductor Ground ground Terminal Terminal A A mh Safety Terms The following terms may appear on the instrument Danger The term Danger is used in this manual to indicate that immediate personal injury can result Warning The term Warning is used in this manual to indicate that although immediate personal injury is not likely caution should be taken Notice The term Notice is used in this manual to indicate that damage to the meter or to other equipment can occur V3 0 7 2009 General Safety Information Carefully read the following safety information in order to avoid personal injury and damage to this product or to products connected to it This product must only be used in t
43. ource channel 18 V3 0 7 2009 Recall the Factory Default Settings To reset the Oscilloscope to the factory default settings refer to the following 1 2 Press the MENU key the function menu will appear on the right side of the screen Press the MENU A or MENU key to select a FUNCTION three options will be visible at the bottom of the screen Press F1 Recall Factory to recall the factory settings Press F2 to select Auto calibration if the ambient temperature varies from the specified operating temperature by more than 5 degrees Celsius an Auto Calibration should be performed Refer to Figure 10 Figure 10 Resetting the Oscilloscope Oscilloscope Input Connections The Oscilloscope has two 2 signal inputs located on the lower right side for CH1 and CH2 measurements Isolated inputs allow for independent floating measurements between Multimeter and Scope functions 19 V3 0 7 2009 Measure Unknown Signals using the Auto Set Feature The Auto Set feature allows the Oscilloscope to measure and display unknown signals automatically This function optimizes position range time base and triggering It also assures a stable display of virtually any waveform Auto Range is especially useful for quickly checking several signals To enable the Auto Set feature perform the following steps 1 Connect the test probe to the circuit or device under test 2 Press the AUTO SET key the test signals will
44. present V ac rms 50 60Hz for AC sine wave applications and as V dc for DC applications Overvoltage Category ll refers to local level applicable for appliances and portable equipment V3 0 7 2009 Only qualified technical personnel should perform maintenance on these devices Observe the nominal value limits for all terminals To avoid fire or electric shock observe all nominal value limits markings and specifications for this product Before connecting to this product carefully read the user s manual Do no operate this instrument without the cover plate secured If the cover plate or panel has been removed do not use this product Do not touch bare conductors Do not use this meter in case of any undetermined failure When in doubt consult qualified repair personnel Do not hinder the meter s ventilation Refer to the user manual for detailed installation instructions and proper setup for adequate ventilation Do not operate this meter in overly humid environments Do not operate this meter in potentially explosive environments Keep the meter s surface clean and dry Use of this device in any manner inconsistent with the uses specified in this manual can possibly compromise the safety protection provided by the meter V3 0 7 2009 Input Connections Input Connections See Figure 2 below Figure 2 Description 1 The power adapter is use to supply AC power and for battery recharging 2 Multimeter test leads
45. rent mA current COM ground negative and Volts Resistance Capacitance Multimeter Display Window Figure 1 Multimeter Display Window 55 V3 0 7 2009 Description 1 2 3 gt 11 12 Battery status indicator Manual range indicator In MANUAL mode the user selects the measurement range Measurement mode indicators DCV DC Voltage measurement ACV AC voltage measurement DCA Direct current DC measurement ACA AC current measurement R Resistance measurement Ph Diode measurement Continuity measurement C Capacitance measurement Relative measurement mode indicator RUN Continuous update mode STOP Display data hold mode The reference value in the relative measurement mode X10 reading multiplier Unit of measure indicator and measurement reading Automatic range mode AUTO Meter automatically selects measurement range Absolute Relative measurement modes The symbols represents absolute measurement normal mode The A symbol represents the relative mode Manual measurement control user selects measurement range Color coded scale indicator Each test mode has a unique color scheme 56 V3 0 7 2009 Making Multimeter Measurements Press the DMM OSC key the oscilloscope will switch to the multimeter mode The meter will prompt the user to correctly insert the test leads Use the A V and R keys to select the desired multimeter function Measuring Resis
46. riggering on the rising edge of the signal Falling Triggering on the falling edge of the signal Source CH1 CH1 is used as the trigger source CH2 CH2 is used as the trigger source Trig mode Auto Acquisition of waveforms is possible even if there is no triggering condition detected Normal Acquisition of waveforms can only be performed when the triggering condition is satisfied Single Sampling is performed on a waveform when one trigger is detected sampling then stops Coupling AC The DC component is blocked DC All components are allowed HF Rjc HF part of the signal is blocked only the LF component is allowed LF Rjc The LF part of the signal is blocked only the HF component is allowed SENS Trigger sensitivity Sensitivity Sensitivity is an adjustment that allows the meter to obtain a stable trigger by excluding the influences of signal noise The sensitivity is adjustable from 0 2div 1 0div Video Triggering The video trigger is designed to capture a video signal format NTSC PAL or SECAM For any other signal type use the Edge trigger mode Refer to Figure 24 Figure 25 and Figure 26 CH2 OFF Figure 24 Video Field Trigger 34 V3 0 7 2009 f 1 809MHZ Figure 26 Video Modulation Trigger The Video triggering menu is described in the following table Function menu Settings Description A Normal For video signals with low black levels Egan For video signals with high blac
47. s an Auto calibration must be performed system function menu Sampling Sampling modes Normal sampling Peak detection Average value Sampling rate 100 MSa s Input Input coupling DC AC Input impedance 1MO 2 connected in parallel with 20pF 5pF Probe attenuation coefficients 1X 10X 100X 1000X Max Input voltage 400V peak Channel delay time typical 150ps Horizontal Sampling rate range 10S s 100MS s Waveform interpolation Csin x x Data record length 6K points for each channel Scanning speed range S div 5ns div 5s div steps in 1 2 5 5 mode Sampling rate relay time 100ppm time interval equal to or larger than 1ms accuracy Time interval Single 1 sampling interval time 100ppm x rdg AT measurement 0 6ns accuracy full bandwidth Average 16 1 sampling interval time 100ppmxreading 0 4ns 67 V3 0 7 2009 Vertical Analog digital converter A D 8 bits resolution both channels synchronously Sensitivity range V div 5mV div 5V div for the BNC connector input Displacement range 10 div Analog bandwidth Single bandwidth 60MHz MS460 20MHz MS420 Full bandwidth Low frequency response A D coupling 3dB 2 5Hz BNC connector Rise time typical lt 17 5ns DC gain accuracy 5 DC measurement accuracy The voltage difference between any
48. ss for a specific purpose and will not be liable for any direct indirect incidental or consequential damages Extech s total liability is limited to repair or replacement of the product The warranty set forth above is inclusive and no other warranty whether written or oral is expressed or implied CALIBRATION AND REPAIR SERVICES Extech offers repair and calibration services for the products we sell Extech also provides NIST certification for most products Call the Customer Service Department for information on calibration services available for this product Extech recommends that annual calibrations be performed to verify meter performance and accuracy Support line 781 890 7440 Technical support Extension 200 E mail support extech com Repair amp Returns Extension 210 E mail repair extech com Product specifications subject to change without notice For the latest version of this User s Guide Software updates and other up to the minute product information visit our website www extech com Extech Instruments Corporation 285 Bear Hill Rd Waltham MA 02451 Copyright 2009 Extech Instruments Corporation a FLIR company All rights reserved including the right of reproduction in whole or in part in any form V3 0 7 2009 Product Contents Refer to the Fig 1 below MS420 MS460 Instrument AC Adaptor Oscilloscope Probes 2 Grey in color Multimeter test leads 2 One black one red USB mass st
49. tance To measure resistance first remove power from the component or circuit under test and then follow these steps 1 Insert the black lead into the COM banana jack input and the red lead into the V QIC banana jack input 2 Press the R key An R appears at the top of the screen 3 Connect the red and black test leads to the resistor or circuit under test The resistance value will appear on the screen unit of measure Ohms Refer to the example diagram below in Figure 2 Figure 2 Resistance Measurement Measuring Diode Voltage To make a measurement on the diode do the following 1 Insert the black lead into the COM banana jack input and the red lead into the V QIC banana jack input 2 Press the R key An R appears at the top of the screen dh 3 Press the SET key repeatedly until the diode symbol is displayed 4 Connect the red and black leads to the diode and read the displayed voltage V 5 Reverse the test lead polarity and perform the test again Refer to the example display screen in Figure 3 57 V3 0 7 2009 Figure 3 Diode Measurement Continuity Test To perform a resistance continuity test refer to the following 1 Insert the black lead into the COM banana jack input and the red lead into the V QIC banana jack input 2 Press the R key An R appears at the top of the screen 3 Press the SET key repeatedly until the following is shown on the screen o gt 4 Connect
50. two points on the average value sampling mode waveform after averaging the captured waveforms is greater than 16 5 reading 0 05 divisions Trigger Trigger sensitivity DC CH1 and CH2 1div DC full bandwidth Edge trigger coupling AC Same as the DC coupling when it is equal to coupling or larger than 50Hz Triggering level range 6 divisions from the screen center Triggering level accuracy typical which is applicable to the signal with rise and fall time equal to or longer than 20ns 0 3 divisions Trigger displacement 655 divisions for pre triggering and 4 divisions for post triggering 50 level setting Typical Operation with the input signal frequency equal to or larger than 50Hz Trigger sensitivity Video triggering and typical mode 2 divisions of peak to peak value Signal system and line field frequency Video triggering mode Supports NTSC PAL and SECAM broadcasting systems of any field or line frequency Measurement Cursor measurements Voltage difference and time difference between cursors Auto measurements Peak to Peak voltage mean voltage root mean square value frequency and period 68 V3 0 7 2009 Probe 1X position 10X position Bandwidth Up to 6 MHz DC Up to full bandwidth DC Attenuation rate 1 1 10 1 Compensation range 20pf 40pf Input resistance 1MQ 2 10MO 2 Input impedanc
51. uation level and the corresponding menu setting Probe attenuation Corresponding Menu Setting level 1 1 1X 10 1 10X 100 1 100X 1000 1 1000X Invert a Waveform Inverted waveform The displayed signal reverses 180 degrees relative to ground Press F4 Invert to invert the waveform press F4 Invert again to exit the inversion mode 30 V3 0 7 2009 WAVE MATH Function Menu Settings The WAVE MATH functions show the calculation results adding subtracting multiplying or dividing CH1 and CH2 channel waveforms Arithmetic operation results can be displayed using a grid or a cursor The amplitude of the calculated waveform can be adjusted with CHM VOL which is displayed in the scale factor form The amplitude ranges from 0 001 through 10 in 1 2 and 5 step increments that is it can be expressed as 0 001X 0 002X 0 005X 10X The position of the calculated waveform can be adjusted up and down using the CHM ZERO key The corresponding operation function table Setting Description CH1 CH2 CH1 waveform minus CH2 waveform CH2 CH1 CH2 waveform minus CH1 waveform CH1 CH2 Add CH1 waveform to CH2 waveform CH1 CH2 Multiply CH1 and CH2 waveforms CH1 CH2 Divide CH1 by CH2 To perform a CH1 CH2 waveform calculation perform the following 1 2 Press the MENU key the function menu will appear at the right of the screen Press MENU A or MENU Y to select WAVE MATH Five 5 se
52. when in the manual mode 2 Inthe manual range mode the measuring range is increased by one stage with each press of the F1 key When the highest range is reached the meter jumps to the lowest range 3 Press the F3 soft key to select the AUTO range mode AUTO will display on the upper left side of the screen Refer to the display example in Figure 13 Figure 13 Automatic Manual Range Adjustment 65 V3 0 7 2009 FAQ The oscilloscope does not power up Check that the battery is charged If the battery is not charged plug the AC Adaptor charger into an AC source and then into the meter Charge the battery for at least 15 minutes before using the Oscilloscope Please contact Extech for service if the instrument fails to power on after a charge The oscilloscope shuts down after operating for only several seconds The battery is most likely very weak or completely drained Check the displayed battery status symbol The al symbol indicates that the battery is exhausted and must be charged The meter displays ERR when in the Multimeter mode The measurement mode is likely not selected In this case press any of the three mode keys V AorR The measured voltage value is 10 times larger or smaller than the actual value indicated in the oscilloscope mode Check that the channel attenuation level matches the actual probe attenuation ratio A waveform is displayed on the oscilloscope screen but is not stable Check whether the signal
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