Draper 50024 User manual

INSTRUCTIONS FOR
Digital Automotive
Analyser
Stock No.50024 Part No.DMM5
This manual has been compiled by Draper Tools and is an integrated part of the product with which it is enclosed and
should be kept with it for future references.
This manual describes the purpose for which the product has been designed and contains all the necessary information
to ensure its correct and safe use. We recommend that this manual is read before any operation or, before performing
any kind of adjustment to the product and prior to any maintenance tasks. By following all the general safety instructions
contained in this manual, it will ensure both product and operator safety, together with longer life of the product itself.
All photographs and drawings in this manual are supplied by Draper Tools to help illustrate the operation of the product.
Whilst every effort has been made to ensure accuracy of information contained in this manual, the Draper Tools policy of
continuous improvement determines the right to make modifications without prior warning.
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY TO ENSURE THE SAFE AND
EFFECTIVE USE OF THIS PRODUCT.
GENERAL INFORMATION
09/2004

DECLARATION OF CONFORMITY
CONTENTS
Contents/Declaration ............................................................................................................... 1
Specification ......................................................................................................................... 2-3
Guarantee ................................................................................................................................ 4
Getting to Know Your Analyser .............................................................................................. 5-6
Assembly .................................................................................................................................. 7
Operation and Use ................................................................................................................ 8-9
Maintenance .......................................................................................................................... 10
We :
Draper Tools Ltd.,
Hursley Road,
Chandler’s Ford,
Eastleigh, Hampshire.
SO53 1YF.
England.
Declare under our sole responsibility that the product:
Stock No:- 50024.
Part No:- DMM5.
Description:- Digital Automotive Analyser.
To which this declaration relates is in conformity with the following directive(s) 73/23/EEC &
89/336/EEC.
With reference to: EN61010-1, 61010-2-031, EN50081-1, EN55022, EN50082-1, EN61000-4-2/-
3/-8 & ENV50204.
J.N. Draper
Managing Director 21/01/2002
- 1 -

- 2 -
SPECIFICATION
The Draper Tools policy of continuous improvement determines the right to change specification
without notice.
Stock No. ......................................................................................................................... 50024
Part No. ........................................................................................................................... DMM5
Battery type ............................................................................................................... 1 x 9V PP3
Dimensions ......................................................................................................... 70x147x39mm
Weight ............................................................................................................................... 189g
- DC VOLTAGE: (autoranging) Input impedance: 10m . Overload protection: 1000V DC or
750V AC RMS.
+/- 1.2%rdg + 1 dgts
Accuracy
Resolution
0.1mV
0.001V
0.01V
0.1V
1V
Range
32mV
3.2V
32V
320V
1000V
- AC VOLTAGE: (autoranging) Input impedance: 10m . Overload protection: 1000V DC or
750V AC RMS.
+/- 2.0%rdg + 4 dgts (@ 50-60Hz)
Accuracy
Resolution
0.001V
0.01V
0.1V
1V
Range
3.2V
32V
320V
750V
- CURRENT: (autoranging) Voltage burden: 0.2V on 320µA, 32mA range, 2V on 3200µA,
320mA range. Input protection: 0.5A/250V Fuse, µA/mA range, 10A/250V fuse, 10A range.
DC Accuracy
+/- 2% rdg + 1 dgts
+/- 3% rdg + 3 dgts
AC Accuracy
+/- 2.5% rdg + 4
dgts (@50-60Hz
+/- 3.5% rdg + 4
dgts (@50-60Hz
Resolution
0.1µA
1µA
0.01mA
0.1mA
0.01A
Range
320µA
3200µA
33mA
320mA
10A

- 3 -
SPECIFICATION

- 4 -
GUARANTEE
Draper Tools have been carefully tested and inspected before shipment and are guaranteed to be
free from defective materials and workmanship for a period of 12 months from the date of
purchase except where tools are hired out when the guarantee period is ninety days from the
date of purchase.
Should the machine develop any fault, please return the complete tool to your nearest
authorized warranty repair agent or contact Draper Tools Limited, Chandler's Ford, Eastleigh,
Hampshire, SO53 1YF. England. Telephone: [phone].
If upon inspection it is found that the fault occurring is due to defective materials or
workmanship, repairs will be carried out free of charge. This guarantee does not apply to normal
wear and tear, nor does it cover any damage caused by misuse, careless or unsafe handling,
alterations, accident, or repairs attempted or made by any personnel other than the authorised
Draper warranty repair agent.
This guarantee applies in lieu of any other guarantee expressed or implied and variations of its
terms are not authorised.
Your Draper guarantee is not effective unless you can produce upon request a dated receipt or
invoice to verify your proof of purchase within the 12 month period.
Please note that this guarantee is an additional benefit and does not affect your statutory rights.
Draper Tools Limited..

- 5 -
GETTING TO KNOW YOUR ANALYSER
(1) Function and Range Selector Switch.
(2) LCD Screen.
(3) V, , , arrows (Voltage, Resistance,
dwell, tach) Jack Socket.
(4) ‘Com’ Jack Socket - Plug in the Black
(Negative Test Lead).
(5) ‘10A’ Jack Socket - (Max 10 amps).
- UNPACKING: After removing the packing material, make sure the product is in perfect
condition and that there are no visible damaged parts. If in doubt, do not use the digital
automotive analyser and contact the dealer from whom it was purchased.
The packaging materials (plastic bags, polystyrene, etc.), must be disposed of in an
appropriate refuse collection container. These materials must not be left within the reach of
children as they are potential sources of danger.
(2)
(3)
(1)
(5)(4)

- 6 -
GETTING TO KNOW YOUR ANALYSER
Diode check.
Audible continuity tester.
Indicates that the meter battery voltage has dropped excessively.
Unit for measuring current (amps).
Units for measuring voltage (volts).
Units for measuring resistance (ohms).
Caution.
Risk of electric shock.
DC Voltage ranges.
Resistance ranges.
TACH ranges.
DWELL ranges.
A
BATT
mV, V
OHM
, K ,M

- 7 -

- 8 -
OPERATION AND USE
-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 voltage to be measured is not known, set the selector
switch to the highest range and reduce until a satisfactory reading is obtained.
- DC VOLTAGE MEASUREMENT:
1. Connect the red test lead to the ‘V/ ’ 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).
- DC 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, see Fig.2 on page 7.
4. Turn on the power to the circuit to be measured, the ‘current’ value should appear on the
digital display.
- RESISTANCE MEASUREMENT:
- WARNING - If the resistance to be measured is part of a circuit, turn off power and discharge
all capacitors before measurement.
1. Connect the red test lead to the ‘V/ ’ jack socket and the black lead to the ‘com’ jack
socket.
2. Set the selector switch to the desired OHM range.
3. Connect the test leads to the circuit to be measured.
4. The resistance value should now appear on the digital display.
-TACH (RPM) MEASUREMENT:
- IMPORTANT: For detailed and concise information on the correct use of this tool always refer
to the vehicle manufacturer’s service handbook.
1. Connect the red test lead to the ‘V/ ’ jack socket and the black test lead to the ‘com’ jack
socket.
2. Set the selector switch to the desired TACH 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.1 on
page 7.

- 9 -- 9 -
- DWELL ANGLE MEASUREMENT:
- IMPORTANT: For detailed and concise information on
the correct use of this tool always refer to the vehicle
manufacturer’s service handbook.
1. Connect the red test lead to the ‘V/ ’ 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. 1.
- DIODE MEASUREMENT:
1. Connect the red test lead to the ‘V/ ’ 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/ ’ 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.
-WARNING: If the resistance
to be measured is part of a
circuit, turn off power and
discharge all capacitors
before measurement.
OPERATION AND USE
FIG.2
FIG.1

- 10 -- 10 -
MAINTENANCE
The fuse rarely needs replacing, and almost always a blown fuse is the result of an operator error.
- WARNING - If the resistance to be measured is part of a circuit, turn off power and discharge
all capacitors before measurement.
If the meter battery is in need of replacement “BATT” will appear on the display.
The fuse should only be replaced by a qualified person.

CONTACTS
- DRAPER TOOLS LIMITED,
Hursley Road,
Chandler's Ford,
Eastleigh,
Hampshire.
SO53 1YF. U.K.
- Helpline: [phone].
- Sales Desk: [phone].
- General Enquiries: [phone].
- Fax: [phone]
- Internet: www.draper.co.uk
- E-mail: [email protected]
YOUR DRAPER STOCKIST
©Published by Draper Tools Limited.
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.