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DIGITAL AUTOMOTIVE ANALYSER ■ STOCK No.61022 ■ PART No.DMM13 • INSTRUCTIONS • IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY TO ENSURE THE SAFE AND EFFECTIVE USE OF THIS TOOL. 04/2000 INTRODUCTION A Digital Autoranging Automotive Analyser, ideal for the professional or home user. FEATURES ■ 24 position rotary function and range selector. ■ Recessed input terminals for added safety. ■ Measures D.C. volts, D.C. current, resistance, frequency, dwell angle, duty cycle, diode check, tachometer and audible continuity readings. ■ Integral stand for easy visibility. ■ Supplied complete with PP3 (9V) battery, crocodile clip leads, test probes, heavy duty inductive pick-up and protective rubber holster. SPECIFICATION ■ ■ ■ ■ ■ ■ ■ D.C. voltage 200mV, 2V, 20V, 200V, 600V. (accuracy 200mV +/-0.5%, 2V - 600V +/- 0.8%). D.C. current - 10A (accuracy +/-3%). Tach ranges: 600 - 2000 + 6000 - 12000 (x10) R.P.M. (accuracy +/-2%). Diode test - open circuit voltage - 3.0V max.. Resistance 200, 2k, 20k, 2M, 20M ohms (accuracy 200=+/-0.8%, 2k - 2m 0.8%, 20M +/-1.5%). Audible continuity tester - open circuit voltage - 2.8V max.. Dwell angle No of Cylinders Range Accuracy 3 0-120.0˚ 4 0-90.0˚ 5 0-72.0˚ +/- 2.0% +5dgts 6 0-60.0˚ 8 0-45.0˚ ■ Battery type 1 x 9 volt PP3. ■ Weight - 222g. (meter only), 355g. (with holster). CAUTION:This instrument has no serviceable parts beneath its cover. Changing of the batteries or fuse should only be carried out by qualified persons. -1- DECLARATION OF CONFORMITY We Draper Tools Ltd. Hursley Road, Chandler’s Ford, Eastleigh, Hampshire. SO53 1YF. England. Declare under our sole responsibility that the product: Stock No:- 61022. Part No:- DMM13. Description:- Digital Automotive Analyser. To which this declaration relates is in conformity with the following directive(s) 89/336EEC & 73/23/EEC. With reference to: EN50081/1, EN55022, EN50082-1, EN55024, EN61000-4-2-3-3, ENV50204, EN 61010-1 & EN 61010-2-031. JOHN DRAPER Managing Director 04/2000 KNOW YOUR MULTIMETER 1. Function and range selector switch. This switch is used to select the function and desired range. 2. Display - LCD display unit. 3. V, Ω, Hz, arrows (Voltage, resistance, dwell, tach) Jack socket. Plug in the red (positive) test lead for all voltage, resistance, dwell, tach and diode measurements. Maximum voltage 600V D.C. 4. ‘Com’ jack socket - plug in the black (negative test lead). 5. ‘10A’ jack socket - (max 10 amps). Plug in the red (positive) test lead for measuring amperage to a maximum of 10 amps. ✖✌ ✕✌ ✙✌ ✗✌ ✘✌ -2- KNOW YOUR MULTIMETER cont’d Diode test mode has been selected. Caution (see notes 3&5 on page 2 and warning on page 1). Audible continuity check has been selected. Caution risk of electric shock. Indicates that the meter battery voltage has dropped excessively. D.C. Voltage ranges. OHM A. Unit for measuring current. mV, V Units for measuring voltage. Resistance ranges. TACH ranges Ω, KΩ,MΩ Units for measuring resistance. DWELL ranges. -3- OPERATION WARNINGS:Each time before you use this instrument, inspect the test leads, connectors and probes for damage, e.g. cracks or breaks in the insulation. Any defective leads should be replaced by a qualified person. If the value to be measured is not known, set the selector switch to the highest range and reduce until a satisfactory reading is obtained. D.C.VOLTAGE MEASUREMENT 1. Connect the red test lead to the ‘V/Ω/Hz’ jack socket and the black lead to the ‘com’ jack socket. 2. Set the selector switch to the desired DCV range. 3. Connect the test leads to the circuit to be measured. 4. Turn on the power to the circuit to be measured, the voltage value should appear on the digital display along with the voltage polarity (if reversed only). D.C. CURRENT MEASUREMENT 1. Connect the red test lead to the ‘10A’ jack socket and the black lead to the ‘com’ jack socket (max 10A). 2. Set the selector switch to the 10A range. 3. Open the circuit to be measured, and connect the test leads in series with the load to be measured. 4. Turn on the power to the circuit to be measured, the ‘current’ value should appear on the digital display. RESISTANCE MEASUREMENT 1. Connect the red test lead to the ‘V/Ω/Hz’ jack socket and the black lead to the ‘com’ jack socket. 2. Set the selector switch to the desired OHM range. 3. WARNING - If the resistance to be measured is part of a circuit, turn off power and discharge all capacitors before measurement. 4. Connect the test leads to the circuit to be measured. 5. The resistance value should now appear on the digital display. TACH (R.P.M.) MEASUREMENT:IMPORTANT:For detailed and concise information on the correct use of this tool always refer to the vehicle manufacturer’s workshop manual or the appropriate Haynes workshop manual. 1. Connect the red test lead to the ‘V/Ω/Hz’ jack socket and the black test lead to the ‘com’ jack socket. 2. Set the selector switch to the desired TACH range. 3. Insert the inductive pickup connecting terminal into the meter. 4. Connect the inductive pickup to a spark plug wire. If no reading is received, unhook the clamp, turn it over and connect again. NOTE: Position the inductive pickup as far away from the distributor and the exhaust manifold as possible. Position the inductive pickup to within six inches of the spark plug or move it to another plug wire if no reading or an erratic reading is received. -4- OPERATION - cont’d FREQUENCY MEASUREMENT 1. Connect the red test lead to the ‘V/Ω/Hz’ jack socket and the black lead to the ‘com’ jack socket. 2. Select the frequency range that gives the most accurate measurement reading. 3. Connect the red test probe to the ‘signal out’ wire to be tested. 4. Connect the black test probe to ground. DUTY CYCLE TEST 1. Connect the red test lead to the ‘V/Ω/Hz’ jack socket and the black test lead to the ‘com’ jack socket. 2. Set the selector switch to the ‘%duty’ position. 3. Connect the red test probe to the signal wire circuit. 4. Connect the black test probe to ground. The illustration for a mixture control solenoid is shown with the metering rod in the closed position. The meter will display the percentage of time the plunger is in the closed position (low duty cycle) during one duty cycle. Fig.1. -5- Fig.1 OPERATION - cont’d Fig.2 DWELL ANGLE MEASUREMENT IMPORTANT:For detailed and concise information on the correct use of this tool always refer to the vehicle manufacturer’s workshop manual or the appropriate Haynes workshop manual. 1. Connect the red test lead to the ‘V/Ω/Hz’ jack socket and the black test lead to the ‘com’ jack socket. 2. Set the selector switch to the desired DWELL range. 3. Connect the red test probe to the breaker points or the ‘-’ terminal on the ignition coil. 4. Connect the black test probe to the ‘-’terminal of the battery or ground.Refer to Fig.2. DIODE MEASUREMENT 1. Connect the red test lead to the ‘V/Ω/Hz’ jack socket and the black lead to the ‘com’ jack socket. 2. Set the selector switch to the position. 3. Connect the red test lead to the anode of the diode and the black lead to the cathode. 4. The forward voltage drop in mV will now be displayed. If the diode is reversed the figure “1” should show on the display. AUDIBLE CONTINUITY TEST 1. Connect the red test lead to the ‘V/Ω/Hz’ jack socket and the black test lead to the ‘com’ jack socket. 2. Set the selector switch to the position. 3. Connect the test leads to two points of the circuit to be tested. If the resistance is lower than 30 ohms the buzzer will sound. Fig.3. Fig.3 WARNING:- See No.3 of Resistance Measurement (page 4). -6- MAINTENANCE The fuse rarely needs replacing, and almost always a blown fuse is the result of an operator error. (See warning on page 4). If the meter battery is in need of replacement ‘ ’ will appear on the display. The fuse should only be replaced by a qualified person. -7- Notes -8- NOTES -9- NOTES - 10 - DRAPER TOOLS LIMITED, Hursley Road, Chandler's Ford, Eastleigh, Hants. SO53 1YF. England. Tel: (023) 8026 6355. Fax: (023) 8026 0784. http://www.draper.co.uk e-mail: [email protected] ©Published by Draper Tools Ltd. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical photocopying, recording or otherwise without prior permission in writing from Draper Tools Ltd.