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7.

Multimeter

7 - 1.

AC and DC VOLTAGE(mV, V) measurements

Enter volt

①

Insert the black test lead into the negative jack(COM) and the red test lead
into the positive V jack.

②

Initial setting of the meter is always : “AC”. Press button to change th
“DC”.

③

Touch the test probe tips to the circuit under test.

④

Read the voltage in the display. The display will indicate the proper decimal
point, value and symbols.

Note.

All multimeter measurement works in AUTO RANGING Mode. To change to
MANUAL RANGING, press key to enter or exit.

WARNING.

Risk of electrocution. The probe tips may not be long enough to contact the
live parts inside some 240V outlets for appliances because the contacts are
recessed deep in the outlets as a result, the reading may show 0 volts when the
outlet actually has voltage on it. Make sure the probe tips are contacting the
metal contacts inside the outlet before assuming that no voltage is present.

CAUTION.

Do not measure AC or DC voltages if a motor on the circuit is being switched
ON or OFF, large voltage surges may occur during the ON or OFF operations
that can damage the meter.

7. Multimeter

7. Multimeter

METER Display

To continue Relative Mode ON/OFF,
press key.

To continue MIN/MAX/AVERAGE,
press key.

46

Hand-held Digital Oscilloscope Meter

47

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Содержание WENS 800 Series

Страница 1: ...WENS 800 Series Operator s Manual DOMTM Hand held Digital Oscilloscope Meter ...

Страница 2: ...Digital Oscilloscope Meter ...

Страница 3: ...ry OSCILLOSCOPE 20 6 1 Display Waveform Contrast Graticule Persistence 20 6 2 CH A CH B 23 6 3 TRIGGER 28 6 4 Trigger Mode 34 6 5 TIME 34 6 6 MEASURE 35 6 7 CURSOR 37 6 8 Acquire Normal Average Peak 40 6 9 MATH DWM FFT 44 7 MULTIMETER 46 7 1 AC and DC VOLTAGE mV V measurement 46 7 2 Resistance measurement 48 7 3 Diode test 49 7 4 Continuity check 50 7 5 Capacitance measurement 51 7 6 Current Tempe...

Страница 4: ...ads and adapters supplied with the instrument Do not apply any voltage when measuring OHM Resistance or Capacitance of Meter mode Do not operate the unit without its cover Do not operate this unit with its cover properly Do not expose the circuits Do not touch any exposed connecting parts or components while power is being supplied Do not operate the unit if it does not operate properly If you sus...

Страница 5: ...n any surfaces Do not allow them contact with any exposed connector pins Handle sensitive components to the minimum extent possible Transport and store with caution Transport and store in ESD preventive bag or container which protects sensitive components from static electricity Recycling the battery The battery optional must be properly recycled or disposed Danger High Voltage Protective Groundin...

Страница 6: ...rovide analysis of signals through its fast signal acquisition ability through the Fast Data Acquisition Unit Through a variety of capture methods such as Average Peak Detect along with its long recording length it enables the user to quickly and accurately acquire the signal properties In addition it offers a more convenient working environment through the use of basic interfaces including USB st...

Страница 7: ...fective operation the instrument performs quick confirming of functions and provides passive probe installation and adjustment and setting of time and date This section explains the methods for quick confirmation on if the instrument is powered on if it is operating properly adjusting the probe using the internal adjusting signal and setting the time and date All initialization configuration steps...

Страница 8: ... adjust CONTRAST by Encoder switch 3 Initial Setting Operation before use 3 2 Probe Adjustment Perform the adjustment function to match the probe to the input channel This function must be performed each time the passive probe is first attached to the input channel A square waveform must appear on the screen Press key Press key Press key to select UTILITY Press key to select 3 4 menu page Set Osci...

Страница 9: ...ON or MUTE OFF MUTE ON does not sound when press the buttons MUTE OFF sounds when press Buttons 4 Front Layout Summary 4 1 Front Layout MULTIMETER INPUT Volts Resistance Capacitance Diode Continuity Aux Temperature Currents Humidity Pressure CH A 320 240pixel LCD Display with Backlight Contrast Adjustment HELP AC Power Adapter Internal charger POWER CH B OSCILLOSCOPE INPUT USB mini PC Communicatio...

Страница 10: ... exit the mode USER Oscilloscope mode only Display method Acquire MATH Self Cal Probe Cal System Information Meter mode only dBM selection Oscilloscope Meter Auto Power Off Language USB Time Contrast MUTE On OFF LOGGER Meter in AUTORANGING mode Data Aquired in logging by time Recorder function Press longer than 2 second to enter or exit the mode ZOOM Enlarge Waveform to analyze the waveform precis...

Страница 11: ...n Trigger Period Video Trigger Line Time div Horizontal Position Zoom Window Zoom Time Measure Parameter Select SAVE Cursor Move Contrast Average Number Select Math Position Time Set Help menu page change dBM Resistance Selection For Faster speed push down ENCODER Switch to enter or exit from COARSE mode 25 times faster than Normal speed Single Shot mode Set to 50 of Edge Trigger press longer than...

Страница 12: ...9 Graticule Full Cross hair Grid Frame Persistence OFF Infinite Clear Display Reset the persistence display Top level menu Sub menu Mode Displaying in linear mode the high low of square waves will appear connected In dot mode the high low of square waves will appear separate Contrast Adjust the screen contrast using ENCODER Switch Graticule Adjusts the grid shape of the waveform display section Se...

Страница 13: ... 1X 10X 100X Invert On Off Position to 0 Sets vertical position to 0V Top level menu Sub menu Function CH A CH B MORE 1 2 page 1 2 CH A CH B MORE 2 2 page 2 2 Position Position Position Position How to change position 1 For fast change press Key longer than 2 seconds and change position by Encoder Switch 2 Select on page 1 2 of CHA CHB and change position by Encoder Switch Position Position Persis...

Страница 14: ...g The input signal is split and the input signal entering the vertical amplifier is grounded The symbol will display on the top line of the screen AC coupling removes the waveform s DC component and displays the remaining waveform only DC coupling Ground coupling Confirms channel s vertical position and the position of the ground coupling signal are met AC coupling On Off page 1 2 Use this functio...

Страница 15: ...inputting the signal to the input terminal 10x Select when using a 10 1 probe 100x Select when using a 100 1 probe Position page 1 2 To set Vertical position by rotating ENCODER Switch Note Long time use of the unit or use in an not recommended environment may cause disagree of the channel s vertical position and position of the ground coupling signal In this event turn power off and On for automa...

Страница 16: ...tion A signal with the high frequency component removed from the selected trigger source is applied to the trigger input This is used to observe low frequency signals with a high amount of high frequency noise Low Frequency Rejection A signal with the low frequency component rejected removed from the selected trigger source is applied to the trigger input Noise Rejection A signal with noise remove...

Страница 17: ...e mode Even at the falling edge it is difficult to acquire the waveform and observe the signal due to signal noise Set to Noise Reject coupling to remove the trigger source noise and the signal will be acquired only at the rising edge as desired Pattern Trigger Press Key and press Key to select the mode Use this function to set each of the two trigger source High Lows and to observe the wavelength...

Страница 18: ...ous waveform which is satisfied by the trigger source2 level and trigger source1 edge Use the Encoder switch to set the Source 1 2 levels CH A CH B Trigger source1 trigger level Manual Setting TTL ECL Set to 50 Positive Negative Shorter Longer Equal Not Equal Condition with Pulse width set by Encoder switch Source Level Polarity Condition Sub menu Setting Pulse Trigger Type Pulse Trigger 1 2 Pulse...

Страница 19: ...Waveform Position ICON is displayed accordingly If cursor measurement is Performing on Vertical axis its value is displayed Press key to display T D AUTO Triggerd Auto T D NORM Triggerd Normal or SINGLE at top right area of display If waveform is acquired in SINGLE mode STOP T D NORM is displayed To acquire new waveform press key to operate RUN Set 50 function is explained in page 30 Trigger level...

Страница 20: ...d value to be deleted 6 7 CURSOR Press key longer than 2 seconds to enter exit mode Use this function to control the cursor to measure the waveform s voltage vertical and time horizontal at the desired point The cursor is moved using the ENCODER Switch or SELECT key according to track mode Y Cursor Mode Y1 Y2 Y1 Y2 Source CH A CH B X Cursor Mode X1 X2 X1 X2 Source CH A CH B Off Removes cursor from...

Страница 21: ...s and simultaneously by using the ENCODER knob while maintaining distance between two cursors When examining characteristics of an area in signals repeating in a fixed space match the width of the cursor to the area width Set the cursor mode to track mode and move the cursor to examine X1 Y1 Use this mode to move the two cursors separately Change the selected cursor with the SELECT key and positio...

Страница 22: ...s function to observe the signal from the ADC unchanged Average Averages and displays the waveforms collected from the oscilloscope high speed data collection terminal The number of waveforms to average can be adjusted between 2 and 256 using the ENCODER knob A higher number of waveforms to average displays a clearer waveform and decreases the sensitivity to signal changes If the signal cannot be ...

Страница 23: ...TO in the rightupper area of display Step 2 check time base is 50ms div or slower Step 3 press key and press Acquire key and select Roll Trigger Data can be acquired when time base is 50ms div or slower Trigger operates as follows Step 1 check time base is 50ms div or slower Step 2 press key and press Acquire and select Trig As shown in the illustration peak detection mode can detect glitch not ov...

Страница 24: ...for dual waveform computation are CH A and CH B respectively When the vertical scale differ the MATH waveform vertical scale will automatically be set to the higher sensitivity vertical scale MATH waveform vertical scale factor FFT Fast Fourier Transform model 840 860 only Calculates and updates the FFT to determine the properties of the signal frequency on the screen in real time Source CH A CH B...

Страница 25: ...lectrocution The probe tips may not be long enough to contact the live parts inside some 240V outlets for appliances because the contacts are recessed deep in the outlets as a result the reading may show 0 volts when the outlet actually has voltage on it Make sure the probe tips are contacting the metal contacts inside the outlet before assuming that no voltage is present CAUTION Do not measure AC...

Страница 26: ...eter 7 Multimeter 7 3 DIODE test 1 Insert the black test lead into the negative jack COM and the red test lead into the positive diode symbol jack Press OHMMETER key Select Diode Test by key Touch the test probe tips to the diode or semiconductor junction you wish to test note the meter reading Reverse the probes polarity by switching probe position Note this reading The diode or junction can be e...

Страница 27: ... adapter into the negative COM jack and the red test lead into the AUX input jack on the instrument Press key or key to enter currents or temperature respectively Select menu by using keys 7 Multimeter 7 Multimeter 7 4 CONTINUITY check Insert the black test lead banana plug into the negative jack and the red test lead banana plug into the positive jack Press OHMMETER key Select CONTINUITY by key T...

Страница 28: ...ode decide whether Window set is displayed on screen or not If select On screen display Window rotate ENCODER switch to change ZOOM Window If select OFF delete Window Set Status on display Type Menu Function MAIN Return to Normal before magnified Magnify Zoom Move WINDOW ON OFF ZOOM Main Use this function to return to the previous state before magnification The horizontal scale factor returns to i...

Страница 29: ...call Recall waveform configuration settings Erase Deletes saved file Clear waveform Erase the recalled wareform and setting in the screen Upper Level Sub menu Explanation Menu USB flash memory not connected USB flash memory connected 8 2 SAVE Press longer than 2 second of the Key to enter SAVE mode This function downloads or saves waveform and configuration settings The information storedintheunit...

Страница 30: ...p window shows Which function select Update Erase then select the Desired menu by Encoder switch and press the Switch If press Setup undo key previous setting data before last setting will show If press key again return back to the last setting Can not recall if the setting is erased from memory while recall When select SET UP SAVE Recall SAVE If press Save Recall Setup Save Recall pop up window s...

Страница 31: ...shed with present setting ERASE Move to mark area where to erase by Encoder switch Press key Pop up window shows which function select Update Recall erase Select menu by Encoder switch and push down The Setting is eased When select Waveform SAVE Recall SAVE If press Save Recall Waveform Save Recall pop up window shows Select Wave 1 through Wave 10 by Encoder switch When mark shows next to Wave Sav...

Страница 32: ...hanged to present setting move to mark area where to update by Encoder switch Press key Pop Up window shows Which function select Update Recall Select the menu by Encoder switch and push down Another Pop Up window The existed Wave data will be erased Okay Not OK shows select OK by Encoder switch and push down the Encoder switch now update is finished with present setting ERASE Move to mark area wh...

Страница 33: ... to directly store or load data from USB flash memory There are SVW BMP selections SVW Saving Press key the file name input area will apear and Encoder switch will move to the list of characters located at bottom of screen Attach the Flash memory device to the mini USB port on the oscilloscope Press the HOLD SAVE key for longer than 2 secondes to produce flash memory internal file SVW SVW SVW 62 H...

Страница 34: ...lative Humidity psi Kpa USER LOGGER USER LOGGER 9 AUTO AUTO function in SCOPE mode Automatically adjust Volts div Time div Trigger Configure at best condition Set Time div by counting Trigger Pulse and find Volts div and select which channel is base of Time div AUTO function in METER mode Autoranging function If press Autoranging mode changed to Manual ranging mode Default value of AUTO in SCOPE m...

Страница 35: ...with the recorded data Logger Restart Press key to restart recording measurement This function is to clear the previousely captured readings and refresh the minimm maximum average values When external Flash Memory device is connected press F3 key in Menu page 2 2 to select CSV Saving time Interval Then press F2 CSV Saving key to save The data logger plots the graph from left to right until the scr...

Страница 36: ...re for PC communication 11 External Layout Summary 11 External Layout Summary CAUTION Do not use the USB port for any use with any product other than for communication with the PC 11 2 USB Flash Memory port Press key and enter Utility Select menu 1 4 page when Oscilloscope mode or menu 1 3 page when Meter Logger mode Then press USB ON OFF key and select ON This function is optional item The functi...

Страница 37: ...tery covers up to remove them Remove the Tilt Stand Replace the batteries making sure the new batteries are located with the correct polarity and the Metal Contacts and Springs in the Battery Compartments are in proper contacts with the batteries Snap the two battery covers back into the original place and put the Tilt Stand in the place Put the two screws in the place using Screw Driver Note If y...

Страница 38: ... 840 860 800X 800Z Input Channeis Input Coupling Input Impedance Probe Attenuation Max Input 2 Channels DC AC GND 1MΩ 1 20pF 3pF x1 or x10 300V direct input 600V through 10 1 Probe HORIZONTAL SEC DIVRange TimeBaseAccuracy PositionRange DelayResolution DelayAccuracy DeltaTime MeasurementAccuracy Modes XY HorizentalPanandZoom 50 ns div 50 s div 10ns div 50 s div 50 ns div 50 s div 0 01 pre Trigger 2...

Страница 39: ...Reject 3times the DC coupled limits MODEL 820 840 860 800X 800Z ACQUISITION Real Time SampleRate WaveformInterpolation RecordLength AcquisitionMode PeakDetection Average VerticalResolution SameRateAccuracy MinimumSampleRate Dot Linear Sine Pulse 125 Kbytes channel Sample PeakDetect Envelope Average 10ns 2 256 8bit 100ppm 100MS s 250 ns to 50S div 200MS s single channel 100MS s per channel 1 GS s S...

Страница 40: ...00 ohm 60M ohm 600 ohm 6M ohm 0 5 10 digit 60 Mohm 1 0 10digit 250V DC or AC Peak within 10 Seconds COUNTS Autoranging 6000 Count 35 6 digit with ananlog Bargraph display CAPACITANCE Range Accuracy 60nF 300uF 2 0 10 digits OTHER MEASUREMENTS Diode Check Continuity MIN MAX AVG Temperature Relative Humidity High Current Pressure Accuracy 2 less than 30 ohm Buzzer Sound Records Minimum Average and Ma...

Страница 41: ...ck 8B 2 3 6V 2800mAH for 820 840 860 8BX 2 2 4V 4500mAH for 800X 800Z STANDARD ACCESSORIES DESCRIPTION Rechargeable Battery Pack 8B for 820 840 860 or 8BX for 800X 800Z Power adapter and charger User s Manual in CD or Printed Manual Passive Probe 20Mhz 40Mhz CATⅢ300V 1 1 60Mhz CATⅢ600V 10 1 100MHz 10 1 or 200MHz 10 1 Test Lead Red Black 1000V DC CATⅢ Holster case USB Interface Package in CD QUANTI...

Страница 42: ...13 REVISIONS REMARK 13 REVISIONS REMARK 80 ...

Страница 43: ...WENS WENS Precision Co Ltd 203 701 Bucheon Techno Park 192 Yakdae Dong Wonmi Gu Bucheon City Gyunggi Do Korea Tel 8232 621 1500 Fax 8232 621 1505 e mail wens wens co kr www wens co kr Printed in Korea ...

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