Elenco Electronics M-2665K Instruction Manual

Elenco™ Electronics, Inc.150 W. Carpenter AvenueWheeling, IL 60090(847) 541-3800http://www.elenco.come-mail: [email protected] MULTIMETER KITM

-9-RESISTOR READING EXERCISE(1) yellow-black-black-black-brown(3) brown-red-violet-red-brown(5) brown-black-black-black-brown(7) white-black-black-yel

-10-PARTS LIST - SECTION AIf any parts are missing or damaged, see instructor or bookstore. DO NOT contact your place of purchase as they will notbe a

-11-Mount the capacitors with 1/4” ofspace between the body and thePC board. Bend cap over asshown.Figure DFigure AAlign the notch on the socket (if

Assemble the LCD into the housing with the partsshown in Figure E. The LCD must be put in withthe notch in the direction shown in Figure E. Peeloff th

-13-PARTS LIST - SECTION BRESISTORSQty. Symbol Description Color Code Part #1 R13 1Ω .5% 1/2W brown-black-gold-green / OR brn-blk-blk-sil-grn 1110511

Figure FLytics have a polarity marking onthem indicating the negative lead, theopposite lead is positive. The PCboard is marked to show the positive(+

-15-Push the four input sockets into the PC board holes from the selector switch side until they stop (seeFigure G). Turn the board over as shown in F

-16-PARTS LIST - SECTION CRESISTORSQty. Symbol Description Color Code Part #1 R31 5.05kΩ .5% 1/4W green-black-green-brown-green 1450501 R33 5.6kΩ 5% 1

PARTS LIST - SECTION DQty Symbol Description Part #1 PTC 1kΩ Thermister 190415ASSEMBLE THE FOLLOWING COMPONENT TO THE PC BOARDThe other components for

-1-INTRODUCTIONRangeSwitchesCurrentShuntsACConverterOhmsConverterVoltageDividerFunctionSwitchesA/DConverterandDisplayDriverDisplayDecimalPointDCAnalog

During autozero, a ground reference is applied as aninput to the A/D converter. Under ideal conditions theoutput of the comparator would also go to ze

-3-VOLTAGE MEASUREMENTFigure 3 Simplified Voltage Measurement DiagramFigure 4 Simplified Current Measurement Diagram200mVVolts9M900k90k9k1kCommon1kV

-4-RESISTANCE MEASUREMENTSFigure 5 shows a simplified diagram of the resistance measurement function.Figure 5 Simplified Resistance Measurement Diagr

-5-Figure 6 7106R FunctionsababcdefgTYPICAL SEGMENT OUTPUT0.5mA2mAV+SegmentOutputInternal Digital GroundLCD PHASE DRIVERLATCH7 SegmentDecode7 Segment

-6-ASSEMBLYThe meter kit has been divided into a number ofsections to make the assembly easy and avoidmajor problems with the meter operation.OPEN ONL

-7-IntroductionThe most important factor in assembling your M-2665K Digital Multimeter Kit is good soldering techniques.Using the proper soldering iro

PART IDENTIFICATION CARDSTo help identify the resistors and diodes used in the construction of your digitalmultimeter we have mounted the diodes and r