Circuit-test DMR-2400 User Manual Download | Manualshive

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USER'S MANUAL

DIGITAL MULTIMETER

DMR-2400

CIRCUIT-TEST ELECTRONICS

www.circuittest.com

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Summary of Contents for DMR-2400

Page 1: ...USER S MANUAL DIGITAL MULTIMETER DMR 2400 CIRCUIT TEST ELECTRONICS www circuittest com ...

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Page 3: ...5 OPERATING INSTRUCTIONS 1 DC Voltage Measurement 6 2 AC Voltage Measurement 6 7 3 DC Current Measurement 7 8 a less than 200mA DC current b 200mA or more DC current 4 Resistance Measurement 8 5 Continuity Test 8 9 6 Diode Test 9 7 Signal Injection Function 9 8 Battery Replacement 10 9 Fuse Replacement 10 11 MAINTENANCE 11 ACCESSORIES 12 WARRANTY 12 ...

Page 4: ...k hazard Always consider circuits to be energized Never assume any equipment to be de energized Always start with power off Set the function switch to the correct setting before making any measurements and do not change position of the function switch during measurements Never connect unit to AC or DC powered circuits when the function switch is set to resistance diode check or continuity ranges A...

Page 5: ... with ranges that may in normal use be subjected to particularly hazardous voltages For maximum safety the meter and its test leads should not be handled when these terminals are energized INTRODUCTION DMR 2400 is a manual ranging compact digital multimeter with a 2000 count LCD display This meter can measure test the following Voltage DC Current Resistance Continuity Diode Audio Devices Signal In...

Page 6: ...Diode Test Test current of 1 5mA maximum Signal Injection 2VAC Peak Approx 30 to 40Hz Square Wave Over range indication ʻIʼ is displayed Operating Temp 0 to 50 C 32 to 122 F Power Source 2 x AA 1 5V Batteries Fuse 0 8A 250V 5x20mm Fast Acting 10A 250V 6 3x32mm Fast Acting Dimensions 145 H x 70 W x 32 D mm 511 16 x 23 4 x 11 4 Weight 216g 7 6oz Accessories included One pair of test leads 2 x AA bat...

Page 7: ...200V 750V 100mV 1V 1 2 reading 20 digits DC CURRENT DC A 200µA 2000µA 20mA 200mA 10A 100nA 1µA 10µA 100µA 10mA 1 2 reading 8 digits 1 2 reading 10 digits RESISTANCE 200 2000 20k 200k 2000k 20M 100m 1 10 100 1k 10k 1 2 reading 8 digits 2 reading 10 digits NOTE Accuracy consists of reading i e accuracy of the measurement circuit digits i e accuracy of the analog to digital converter ...

Page 8: ...786 set the function switch to the next lower range Repeat until you have maximum digits possible without displaying ʻIʼ If the minus sign appears it means the voltage is negative at the point being measured If ʻIʼ appears on the display it indicates over range Immediately remove test leads from the measuring circuit to avoid any damage to the meter The input voltage should not exceed the measurem...

Page 9: ... on the DC AMPS scale Plug the red test lead in V mA jack and the black test lead in jack Remove power from the circuit that is to be measured Open up the circuit and connect the black lead to the negative side and the red lead to the positive side of the circuit so that the test leads are in series with the load to be measured Apply power to the circuit Read the displayed current If the numeric v...

Page 10: ...TANCE BEING MEASURED SELECT THE HIGH EST RANGE AND REDUCE UNTIL A SATISFACTORY READING IS OBTAINED Set the function switch to the desired OHMS scale Plug the red test lead in V mA jack and the black test lead in jack Apply the test leads to the resistor being measured If the resistor is part of a circuit it is necessary to disconnect one end of the resistor to avoid any unwanted interference from ...

Page 11: ...MS scale Plug the red test lead in V mA jack and the black test lead in jack Apply the test leads across the diode terminals and note the meter reading Reverse the diode and note this reading Based on the readings the result can be evaluated as follows If one reading is around 0 5 and the other reading is ʻIʼ the diode is good If both readings are ʻIʼ the diode is open defective If both readings a...

Page 12: ... 9 FUSE REPLACEMENT WARNING DISCONNECT BOTH TEST LEADS FROM ANY SOURCE OF VOLTAGE BEFORE REMOVING THE BACK COVER DO NOT OPERATE THE METER UNTIL THE BACK COVER IS IN PLACE AND FASTENED SECURELY a 0 8 Amp Fast acting 5x20mm Fuse Turn off the meter and disconnect both test leads Remove the single screw securing the battery fuse cover and lift to open Remove the batteries Gently pull the fuse from its...

Page 13: ...the PC board which should now be in full view Carefully remove the old fuse and replace it with a new CSA UL listed fast acting 10A 250V fuse only AGC 10A MAINTENANCE a Always keep the meter dry b Keep the meter clean Wipe the case occasionally with a damp cloth Do not use chemicals cleaning solvents or detergents c Use and store the meter in recommended normal environmental conditions Extreme tem...

Page 14: ...e date of purchase Visit our website www circuittest com for information on warranty service Any product which has been subjected to misuse or accidental damage is excluded from the warranty Except as stated above Circuit Test Electronics makes no promises or warranties either expressed or implied including war ranties of merchantability or the ﬁtness for any particular purpose Register your produ...

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