Elenco Compact Digital Multimeter Uživatelský manuál

ELENCO®Copyright © 2012 by ELENCO®All rights reserved. 753014No part of this book shall be reproduced by any means; electronic, photocopyi

DC AMPS TEST1) Set the range switch to 200μA and connect themeter as in Figure Q. With RA equal to 100kΩ thecurrent should be about 90μA. Compare ther

-10-FINAL ASSEMBLYr Peel the backing off of the shield label and stick it onto the case bottom in the location shown in Figure Ra.r Snap the case bott

-11-THEORY OF OPERATIONFigure 1InputSelectorSwitchesACConverterOhmsConverterCurrentShuntVVΩIVoltageDividerSelectorSwitchesVA/DConverter& DisplayDr

-12-The integrate period begins at the end of theautozero period. As the period begins, the AZ switchopens and the INTEG switch closes. This applies t

-13-Figure 27106 IC FunctionsFigure 3ababcdefgTYPICAL SEGMENT OUTPUT0.5mA2mAV+SegmentOutputInternal Digital GroundLCD PHASE DRIVERLATCH7 SegmentDecode

-14-DC VOLTAGE MEASUREMENTFigure 4 shows a simplified diagram of the DC voltagemeasurement function. The input voltage divider resistorsadd up to 1 me

DIODE CHECKRANGE RESOLUTION MAX TEST CURRENT MAX OPEN CIRCUIT VOLTAGEDIODE 1mV 1.4mA 2.8VTRANSISTOR hFETESTRANGE TEST RANGE TEST CURRENT TEST VOLTAGEN

-16-METER OPERATIONPRECAUTIONS AND PREPARATIONS FOR MEASUREMENT1) Be sure the battery is connected to the batterysnap and correctly placed in the batt

-17-DIODE CHECK1) Connect the black test lead to the “COM”terminal.2) Connect the red test lead to the “VΩmA” terminal.3) If the diode being measured

-18-Answers to Quiz: 1. C, 2. D, 3. B,4. A, 5. D, 6. A, 7. B, 8. C, 9. B, 10. BSCHEMATIC DIAGRAM

PARTS LISTIf you are a student, and any parts are missing or damaged, please see instructor or bookstore. If you purchased this meterkit from a distri

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-2-IDENTIFYING RESISTOR VALUESUse the following information as a guide in properly identifying the value of resistors.5 Bands1 2MultiplierTolerancePAR

-3-CONSTRUCTIONSolderSoldering IronFoilSolderSoldering IronFoilComponent LeadSoldering IronCircuit BoardFoilRosinSoldering iron positionedincorrectly.

ASSEMBLY INSTRUCTIONSIdentify and install the following parts as shown. After soldering each part, mark a check þ in the box provided.Be sure that sol

Install the following parts. Then, mark a check þ in the box provided.-5-ASSEMBLY INSTRUCTIONSIdentify and install the following parts as shown. After

-6-Figure FTa bInput socketsShunt wireRed wireBlack wireSolderBattery snapTransistor socketFuse clipsClear protective filmFigure LSpring holes4mm Spri

r Put the ball bearings into two opposite indents inthe case top as shown in Figure M.r Place the six slide contacts on the selector knobsas shown.r P

1) ACV Range: 600 HV 0 0 0200 0 0.02) DCA,10A Ranges: 200μ 0 0.02,000μ 0 0 020m 0.0 0200m 0 0.010A 0.0 03) Ohms, Diode and hFE Ranges: B indicates b