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EZ DM-310SRS, Operation Manual

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EZ DM-310SRS Operation Manual Download Page 5

                                  WARRANTY

This instruments is warranted against defects in material and

workmanship for a period of one year from the data of sale.

During the warranty period, EZD will repair or replace it which

Prove to be defective. But warranty shall not apply to defects

resulting from improper or inadequate maintenance by buyer,

In this case, the repair will be billed at a nominal cost.

For warranty service or repair, this instrument must be returned

to a service facility designated by EZD.

Buyer shall prepay shipping charges to EZD and EZD shall pay

Shipping charges to return it to buyer.

Summary of Contents for DM-310SRS

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Page 3: ...measurements Below 200 Fuse rating 250V 10A measurements Below 10A Fuse rating 250V measurements Below 600VAC DC 1 minute measurements Below 600VAC DC 1 minute Hz measurements Below 250VAC DC BAT Don t input the any voltage current but battery voltage If you don t follow the safety information DMM SET may be damaged And it can cause a roaring noise or a fire ...

Page 4: ...L MULTIMETER Model Numbers DM 311 DM 312 Date Sep 27 1995 Conforms to the following product specification Certified by TUV Rheinland Safety EN61010 1 1993 IEC 1010 1 1990 A1 1992 modified EMC EN50081 1 1992 EN50082 1 1992 Supplementary Information The product herewith complies with the requirements of the Low Voltage Directive 73 23 EEC and the EMC Directive 89 336 EEC Bucheon Gyeonggi Location Ch...

Page 5: ... which Prove to be defective But warranty shall not apply to defects resulting from improper or inadequate maintenance by buyer In this case the repair will be billed at a nominal cost For warranty service or repair this instrument must be returned to a service facility designated by EZD Buyer shall prepay shipping charges to EZD and EZD shall pay Shipping charges to return it to buyer ...

Page 6: ...Y 2 FEATURES 4 HOW TO USE THE METER 5 Input Terminals 5 Function Selector Rotary Switch 5 Pushbuttons 8 Digital display 9 APPLICATIONS 10 Measuring Voltage AC DC 10 Measuring Current AC DC 11 continued on page ii CONTENTS TITLE PAGE ...

Page 7: ...ontinuity Test 15 Battery Test 16 Measuring Frequency 17 Measuring Capacitance 18 MAINTENANCE 19 Battery Replcement 20 Fuse Replcement 21 SPECIFICATIONS 22 Specifications DM 311 312 22 Specifications DM 313 25 Specifications DM 341 26 CONTENTS continued TITLE PAGE ...

Page 8: ...to hold both the meter and probe tip with one hand WARNING READ MELTIMETER SAFETY BEFORE USING THE METER Your EZD Digital Multimeter also referred to as the meter is a handheld instrument that is designed for use in the field laboratory and at home The meter combines the precision of a digital meter with the speed and versatility of a high resolution The meter is powered by a 9V battery and has a ...

Page 9: ...ection position and jack terminal used Buzzer sound if rotary switch is not set to Amp mode 10A DC AC during 10A terminal which a detector is built in pluged in by test lead only DM 313 To avoid accidentally applying voltage to 10A terminal verify that red test lead is connected to V input terminal before making voltage measurement This restriction ensures protection against burns in the event tha...

Page 10: ...000 1 000 1 000 1 000 1 000 Figure 2 Using Effect A No plug in 10A JACK terminal Range selector except 10A position B Performance good Measurement C Buzzer sound mismatching mismatching Good MULTIMETER SAFETY 3 ...

Page 11: ...measurements WARNING TO AVOID ELECTRICAL SHOCK OR DAMAGE TO THE METER DO NOT APPLY MORE THAN 1000V BETWEEN COMTERMINAL AND EARTH GROUND TO AVOID ELECTRICAL SHOCK USE CAUTION WHEN WORKING ABOVE 60V DC OR 30V AC RMS SUCH VOLTAGES POSE A SHOCK HAZARD FEATURES 3 Digit 2000 count LCD DM 310SRS 4 Digit 20000 count LCD DM 341 Measurement rate 2 times sec Different colors of input terminals Low battery in...

Page 12: ... Common Terminal Black color Return terminal for all measurements Do not apply more than 1000V between The COM terminal and Earth ground v Volts Ohms Continuity BAT Frequency Diode test input Terminal Red color Input Terminal SOCKET Transistor hFE input terminal SOCKET capacitance input terminal Function Selector Rotary Switch item describes functions that are selected by setting the rotary switch...

Page 13: ...NPUT V V COM 0 1 0 1 1000V 1000V 1000VDC 750VAC 10A 10A COM 0 01A 0 01A 10 00A 10 00A 10A 250V V COM 10 199 9 COM 1 199 9 200 250V V COM 0 1 0 1 19 99 19 99 600VAC DC 1min Hz V COM 10Hz DM 312 199 9 DM 312 250VAC DC BAT V COM 1 DM 311 19 99V DM 311 Do not Apply any Voltage or Current only Battery V COM 600VAC DC 1min HOW TO USE THE METER INPUT TERMINALS AND LIMITS 6 ...

Page 14: ...AXIMUM INPUT V V COM 0 01 1000V 1000VDC 750VAC 10A 10A COM 0 001A 10 000A 10A 250V COM 1 199 99 200 250V V COM 0 01 19 999 600VAC DC 1min Hz V COM 1 199 99 250VAC DC V COM 600VAC DC 1min Table 1 Input Terminals and Limits DM 341 HOW TO USE THE METER INPUT TERMINALS AND LIMITS 7 ...

Page 15: ... MEM store mode The MEM annunciator is displayed as the last two significant digits are stored and then subtracted from all the following inputs Press the MEM switch again to cancel The MEM mode is also canceled whenever the measurement mode or range is changed The MEM operation mode can be very useful in resistance measurement errors It can also be used to measure deviations of voltage or current...

Page 16: ...eter is the auto range mode and will automatically select range with the best resolution The meter powers on in auto range mode 3 NEGATIVE POLARITY Automatically indicates negative inputs 4 BEEPER continuity test is enabled 5 MEM MODE DM 313 When MEM is enabled indicates as the last two significant digits are stored HOW TO USE THE METER INPUT TERMINALS AND LIMITS 9 ...

Page 17: ...mon terminal and red one to v terminal and turn the rotary switch to DCV or ACV range as Figure 5 1 Connect the meter in parallel with the load or circuit under test Each of AC DC voltage ranges presents an input impedance of approximately 10 in parallel with less than 50 AC voltage is AC Coupled to the 10 input and frequency range is 50 to 400 Over range is being indicated by flickered figure 1 i...

Page 18: ...e as Figure 5 2 Connect the meter in series with the load or circuit under test and note that the frequency range for AC current measurement is 50 to 400 When measuring current the meter s internal shunt resistors develop a voltage across the meter s terminals called burden voltage This voltage drop is very low in your meter but it may affect precision circuits or measurements Over range is being ...

Page 19: ...an external voltage is present across a component it will be impossible to take an accurate measurement of the resistance of that component To measure in circuit resistance shunted by a semiconductor junction Press the Lo function and make sure the Lo annunciator is displayed of the LCD DM 313 Due to the sensitive nature of the 200 range a residual resistance is present This resistance will displa...

Page 20: ...ange as Figure 5 4 insert the leads Emitter Base Collector into the proper holes of the socket on the front panel according to transistor type NPN or PNP The display reads approximate eFE value at the test condition of Base current 2 4 and VCE 3V Figure 5 4 hFE Test NOT USED APPLICATIONS TRANSISTOR hFE TEST 13 ...

Page 21: ... diode test plug the black test lead to COM terminal and the red one into v inputs turn the rotary switch to and connect the test leads across the diode under measurement as Figure 5 5 The forward voltage drop is displayed in V unit Test condition Forward DC current 1 Reversed DC voltage 2 6V APPLICATIONS DIODE TEST 14 ...

Page 22: ...rotary switch to the position Connect the black test lead to COM input terminal and the red one to v terminal and the leads across the resistance or circuit under measurement as Figure 5 6 Test resistance below 200 DM 311 312 341 or 2 and 20 at Lo mode DM 313 cause the meter to emit a continuous tone CAUTION Turn off power on the test circuit and discharge all capacitors before attempting continui...

Page 23: ...lack lead to common terminal and red one to v terminal and turn the rotary switch to BAT range as Figure 5 7 Connect the test leads across the battery under measurement The kinds of AAM AM CM DC batteries can be measured on 1 5V BAT range and FC 1006P or LR 44 button type on 9V BAT range APPLICATIONS BATTERY TEST 16 ...

Page 24: ...r frequencies above 10 the update rate slows and follows the input signal Turn the rotary switch to the frequency range to be used and connect the test leads across the frequency under measurement as Figure 5 8 The minimum input signal required to trigger is above 100 If the input signal is below the trigger level frequency measurements will not be taken APPLICATIONS MEASURING FREQUENCY 17 ...

Page 25: ...e range is changed Adjust the ZERO ADJ Knob for this condition NOTE Capacitor should be discharged before being tested When testing large capacitors note that there will be a certain time lag before displaying final indication C C K K A A L L B B D D R R E E 1 000 NOT USED Figure 5 9 Measuring Capacitance APPLICATIONS MEASURING CAPACITANCE 18 ...

Page 26: ...ption and returned at no charge If the warranty has laped the meter will be repaired and returned for a fixed fee Contact the nearest EZD s distributor for information and prices Battery Replacement Figure 5 10 After disconnecting test leads and turning off the multimeter Remove the one screw from the Battery cover Disconnect battery from instrument and replace with a standard 9V battery Replace b...

Page 27: ...Figure 5 10 Battery Replacement MAINTENANCE CALIBRATION REPLACEMENT 20 ...

Page 28: ...Figure 5 10 Fuse Replacement MAINTENANCE CALIBRATION REPLACEMENT 21 ...

Page 29: ... 2 0 2 0 0 0 1 1 1 0 1 0 0 1 0 2 d g t 2 0 2 0 0 1 0 1 0 0 0 7 5 1 d g t D C C U R R E N T 1 0 A 1 0 1 5 2 d g t 1 0 A 1 0 1 2 5 d g t Accuracy is ginven as of reading number of least sanificant digits at 18 to 28 with relative humidity up to 80 for a period of one year after calibraton Sources like small hand held radio transceivers fixed station radio and television transmitters vehicle radio tr...

Page 30: ...g t 2 0 1 0 1 0 1 d g t 2 0 0 0 0 2 0 0 1 0 1 2 0 6 d g t C A PA C ITA N C E 2 0 0 0 1 5 0 4 d g t Specifications Accuracy is ginven as of reading number of least sanificant digits at 18 to 28 with relative humidity up to 80 for a period of one year after calibraton Sources like small hand held radio transceivers fixed station radio and television transmitters vehicle radio transmitters and cellul...

Page 31: ... K C U R R E N T 6 9 T R A N S I S TO R T E S T B A S E C U R R E N T 2 4 V C E A P P R O X 3 0V Specifications Accuracy is ginven as of reading number of least sanificant digits at 18 to 28 with relative humidity up to 80 for a period of one year after calibraton Sources like small hand held radio transceivers fixed station radio and television transmitters vehicle radio transmitters and cellular...

Page 32: ...L TA G E 2 5 V A P P R O X M A X I M U M T E S T C U R R E N T 1 2 0 2 0 0 1 0 1 0 0 0 7 5 2 d g t D C C U R R E N T 1 0 A 1 0 1 5 2 d g t C O N T I N U IT Y T E S T R A N G E 2 0 0 T H R E S H O L D 2 O R L E S S Accuracy is ginven as of reading number of least sanificant digits at 18 to 28 with relative humidity up to 80 for a period of one year after calibraton Sources like small hand held radi...

Page 33: ... 5 3 d g t D I D O D E T E S T V O L T A G E 3 V A P P R O X M A X IM U M T E S T C U R R E N T 1 C O N T I N U IT Y T H R E S H O L D 2 0 0 O R L E S S 2 0 2 0 0 1 1 0 0 7 5 1 0 d g t A C C U R R E N T 1 0 A 1 1 5 1 0 d g t T R A N S I S TO R B A S E C U R R E N T 2 4 V C E A P P R O X 3 0 V Specifications Accuracy is ginven as of reading number of least sanificant digits at 18 to 28 with relativ...

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Page 36: ...The specifications are subjected to change without notice ...

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