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DRAWING No. RD700/701 06-1404 2040 6010

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4-10 Words

AC Sensing

Average RMS: RD700

When measurement is taken by "average", no error is caused as the

input signal is shine wave with no distortion. However, if the input

waveform is distorted sine cave or non-sinusoidal wave, conversion to

root-mean-square values is very difficult, resulting in a large error.

AC coupling True RMS: RD701

When measurement is taken by true r.m.s., the measurement value of

input signal becomes the scales of the signal power and therefore

provide more effective values than those obtained by average value

detection. This multimeter imploys this true RMS circuit, which enables

measurement of sine wave and non-sinusoidal waves like square wave

and triangular wave in r.m.s.

Crest Factor

The crest factor (CF) is expressed by a value obtained by dividing the

peak value of the signal by its RMS value. Most common waveforms

such as sine wave and triangular wave have a relatively low crest

factor. The voltages and crest factors of typical waveforms are shown

in the table.

――

•Vp

Sine Wave

Square Wave

Triangular Wave

Puls

Input Waveform

Peak

RMS

Vrms

Average

Vavg

Vp/Vrms

Form Factor

Vrms/Vavg

=1.414 Vrms =0.707 Vp =0.637 Vp =1.414 =1.111

=1.732 Vrms =0.577 Vp =0.5 Vp =1.732 =1.155

Vrms 2

――

2 Vp

――

2 2

Vrms 3

――

•Vp

Содержание RD700

Страница 1: ...INSTRUCTION MANUAL RD700 RD701 DIGITAL MULTIMETER ...

Страница 2: ...ELECT 005 4 5 Range Hold RANGE 006 4 6 Data Hold HOLD 006 4 7 Max Hold MAX 006 4 8 Relative Mode REL 006 4 9 Mis insertion alarm for current function ALARM 006 4 10 Words 006 5 MEASUREMENT PROCEDURE 5 1 Start Up Inspection 009 5 2 Voltage measurement Frequency measurement 010 5 3 Adapter measurement 012 5 4 Resistance measurement and Capacitance measurement Testing Diode Checking Continuity 014 5 ...

Страница 3: ... 7 AFTER SALE SERVICE 7 1 Warranty and Provision 023 7 2 Repair 023 7 3 Sanwa web site 024 8 SPECIFICATIONS 8 1 General Specification 025 8 2 Measurement Range and Accuracy 028 ...

Страница 4: ...fter reading it keep it together with the product for reference to it when necessary The instruction given under the heading of WARNING must be followed to prevent accidental burn or electrical shock 1 1 Explanation of Warning Symbols The meaning of the symbols used in this manual and attached to the product is as follows Very important instruction for safe use The warning messages are intended to...

Страница 5: ...rcuit of the fuse 18 When connect and disconnecting the test leads connecting the ground lead black one first When disconnecting them the ground lead must be disconnected last 19 Always keep your fingers below the finger guards on the probe when making measurements 10 Be sure to disconnect the test pins from the circuit when changing the function 11 Before starting measurement make sure that the f...

Страница 6: ...ements of small type communication equipment electrical home appliance lighting voltage and batteries of various type 2 2 Features Fuse protects the current circuit and the terminals are mis insertion alarm It is the LCD that the value is able to read easily The function of the adapter probe is equipped The input impedance of the 400 mV range is 1000 M Ω It is possible to measure Frequency and Tem...

Страница 7: ...RELATIVE Button LCD Display Common Input Terminal A measuring Terminal SELECT Button RANGE Hold Button V Hz ADP Ω TEMP Measuring Terminal µA mA measuring Terminal POWER Switch and FUNCTION Switch DATA Hold Button MAX Hold Button 4 ...

Страница 8: ...unction switch to the OFF position Then turn back on again To disable the Auto Power Off feature press the SELECT button while turning the function switch on Note Always turn the function switch to the OFF position when the meter is not in use 4 3 Low Battery Indication If the internal battery has been consumed and the internal battery drops below approx 2 6 V Battery mark is shown in the display ...

Страница 9: ...ured maximum value as fast as 30 ms in a single range and with automatic up range capability This function is able to use it with voltage measurement current measurement and ADP measurement function Press the MAX button for 1 sec or more to activate or to exit the max feature in the voltage or current functions 4 8 Relative Mode REL Relative zero allows the user to offset the meter consecutive mea...

Страница 10: ...mploys this true RMS circuit which enables measurement of sine wave and non sinusoidal waves like square wave and triangular wave in r m s Crest Factor The crest factor CF is expressed by a value obtained by dividing the peak value of the signal by its RMS value Most common waveforms such as sine wave and triangular wave have a relatively low crest factor The voltages and crest factors of typical ...

Страница 11: ... a good ability to reject the effect of AC noise in DC measurements CMRR Common Mode Rejection Ratio Common mode voltage is voltage present on both the COM and VOLTAGE input terminals of a DMM with respect to ground CMRR is the DMM s ability to reject common mode voltage effect which causes digit rattle or offset in voltage measurements This series has a CMRR specifications of 60 dB at DC to 60 Hz...

Страница 12: ...EMENT PROCEDURE 5 1 Start Up Inspection START Short the red and black test pins No damaged No problem Start measurement Yes Stop using it and have it repaired 9 1 Never use meter if the meter or test leads are damaged or broken 2 Make sure that the test leads are not cut or otherwise damaged CAUTION Damaged No ...

Страница 13: ...oltage is shown in the display After measurement release the red and black test pins from the object measured Note 1 AC 400 0 mV range selection is the manual operation switching by RANGE button 2 It may fluctuate the value when the input terminal is opened because the input impedance of DC AC 400 0 mV range is 1000 MΩ But this is not malfunction and there is not hindrance in measurement 3 The acc...

Страница 14: ...l Set the function switch to Hz Apply the red and black test pins to an object to measure The reading of Voltage is shown in the display After measurement release the red and black test pins from the object measured Note Operating input voltage 20 VAC rms Input Signal Sine wave or Square wave with duty cycle 40 70 Sensitivity 10 Hz 20 kHz 0 9 Vrms 20 kHz 500 kHz 2 6 Vp or 1 9 Vrms 500 kHz 1 MHz 4 ...

Страница 15: ...input terminal and plug of red test lead or to ADP input terminal Set the function switch to ADP and select either DC or AC by pressing the SELECT button Open the clamp part have electric wire one line clamped and close the clamp part perfectly The reading is shown in the display 1mV is indicated as 10 counts In case of a current clamp probe with 1mV output per 1 A a display of 1000 counts on the ...

Страница 16: ...L33DC DC 20 A DC 200 A AC 20 A AC 200 A DC 30 A DC 300 A DC 15 mV DC 150 mV AC 15 mV AC 150 mV DC 25 mV DC 250 mV DC 0150 DC 1500 AC 0150 AC 1500 DC 0250 DC 2500 1 5 A 150 A 1 5 A 150 A 2 5 A 250 A Adapter ADP indication example This range is 1 mV output per 0 1 A 13 ...

Страница 17: ...s to an object to measure The reading is shown in the display After measurement release the red and black test pins from the object measured Note If measurement is likely to be influenced by noise shield the object to measure with negative potential COM If a finger touches a test pin during measurement measurement will be influenced by the resistance in the human body to result in measurement erro...

Страница 18: ...f red test lead to measuring terminal Set the function switch at Ω and select with the SELECT button Apply the red and black test pins to a circuit or conductor to measure The continuity can be judged by whether the buzzer sounds or not After measurement release the red and black test pins from the object measured Note Threshold between 20 Ω and 120 Ω Open Circuit Voltage 0 4 VDC typical ...

Страница 19: ...e and the red test pin to the anode Check reading for judgment of good or defective A zero reading indicates a shorted diode defective An OL indicates an open diode defective Apply the red test pins to the cathode of the diode and the black test pin to the anode The display shows OL if diode is good Any other readings indicated the diode is resistive or shorted defective After measurement release ...

Страница 20: ...by pressing the SELECT button Apply the red and black test pins to an object to measure Read the value in the display After measurement release the red and black test pins from the object measured 17 5 4 4 Capacitance Measurement 1 Discharge the capacitance before measurement 2 Due to the measurement method that this device pours the current into a capacitor the measurement such as the big electro...

Страница 21: ...COM input terminal and the plug to Temp terminal Set the function switch to Temp and select either or by pressing the SELECT switch Apply the sensor of K 250PC 50 250 58 482 to an object to measure Read the value in the display After measurement release the sensor from the object measured NOTE In the case that other optional temperature sensors are used it connects to DMM by using optional K type ...

Страница 22: ...arn the user against possible damage to the meter due to improper connections to the µA mA or A input terminals when other function like voltage function is selected WARNING DCµA mA Maximum rating input value 400 mADC ACµA mA Maximum rating input value 400 mAAC DCA Maximum rating input value 10 ADC ACA Maximum rating input value 10 AAC 1 Applications DCA Current in batteries and DC circuits is mea...

Страница 23: ...n series with load For measurement of DCA apply the black test pin to the negative potential side of the circuit to measure and the red test pin to the positive potential side in series with load For measurement of ACA apply the red and black test pins to the circuit to measure in series with load Apply the red and black test pins to the circuit to measure Read the value in the display After measu...

Страница 24: ... may conduct the calibration and inspection For more information please contact the manufacturer 6 3 Battery and Fuse Replacement 1 If the rear case or the battery lid is removed with input applied to the input terminals you may get electrical shock Before starting the work always make sure that no input is applied 2 Before starting the work be sure to turn OFF the main unit power and release the ...

Страница 25: ...th and wipe it lightly 2 The panel and the case are not resistant to heat Do not place the instrument near heat generating devices such as a soldering iron 3 Do not store the instrument in a place where it may be subjected to vibration or from where it may fall 4 For storing the instrument avoid hot cold or humid places or places under direct sunlight or where condensation is anticipated CAUTION F...

Страница 26: ... to fuses disposables batteries or any product or parts which have been subject to one of the following causes 1 A failure due to improper handling or use that deviates from the instruction manual 2 A failure due to inadequate repair or modification by people other than Sanwa service personnel 3 A failure due to causes not attributable to this product such as fire flood and other natural disaster ...

Страница 27: ...functional parts is 6 years after the discontinuation of manufacture This retention period is the repair warranty period Please note however if such functional parts become unavailable for reasons of discontinuation of manufacture etc the retention period may become shorter accordingly 4 Precautions when sending the product to be repaired To ensure the safety of the product during transportation p...

Страница 28: ... voltage is inputted Over ranging Indication OL mark indication Over ranging Indication OL mark indication Operating Temperature 0 40 0 80 R H 35 50 0 70 R H Relative Humidity Maximum relative humidity 80 for temperature up to 31 decreasing linearly to 50 relative humidity at 40 Storage Temperature 20 60 80 R H With battery removed Altitude Operating below 2000 m Temperature Coefficient Nominal 0 ...

Страница 29: ...o Power Off Function Consumption 300 µA typical for RD700 360 µA typical for RD701 Dimension 179 H x 87 W x 55 D mm with holster Mass 320 g 460 g with holster Accessories Test leads TL 23a K type thermocouple K 250PC Holster H 50 Instruction manual RD700 RD701 Optional Accessories K type adapter K AD Clamp Probe CL3000 CL 22AD and CL33DC 26 ...

Страница 30: ......

Страница 31: ... Hz Rs 1 kΩ 50 500 Hz CMRR 60 dB DC to 60 Hz Rs 1 kΩ Open Circuit Voltage 0 4 VDC typical Additional 50 00 nF range accuracy is not specified Accuracies with film capacitor or better Operating input voltage 20 Vrms Input Signal Sine wave or Square wave with duty cycle 40 70 Sensitivity 10 Hz 20 kHz 0 9 Vrms 20 kHz 500 kHz 2 6 Vp or 1 9 Vrms 500 kHz 1 MHz 4 2 Vp or 3 Vrms Update Rate 2 per second n...

Страница 32: ...0 A continuous 50 Hz 500 Hz 10 A continuous Function Accuracy 3 Input Impedance Remarks ADP DC 0 3 rdg 4 dgt AC1 1 5 rdg 5 dgt 1000 MΩ 30 pF nominal RD700 50 Hz 500 Hz RD701 50 Hz 3 kHz Specifications and external appearance of the product described above may be revised for modification without prior notice 3 The accuracy of the sensor is not included Accuracy calculation For example Measurement 4...

Страница 33: ... 36 MEMO ...

Страница 34: ...SANWA ELECTRIC INSTRUMENT CO LTD Dempa Bldg Sotokanda2 Chome Chiyoda Ku Tokyo Japan 06 1404 2040 6010 ...

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