Fluke Automobile Accessories DIS 90 User Manual

LIMITED WARRANTY & LIMITATION OF LIABILITY  
®
This Fluke product will be free from defects in material and  
workmanship for one year from the date of purchase. This warranty  
does not cover fuses, disposable batteries or damage from  
accident, neglect, misuse or abnormal conditions of operation or  
handling. Resellers are not authorized to extend any other warranty  
on Flukes behalf. To obtain service during the warranty period,  
send your defective product to the nearest Fluke Authorized  
Service Center with a description of the problem.  
DIS 90  
Ignition Adapter  
THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER  
WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR  
PURPOSE, ARE EXPRESSED OR IMPLIED. FLUKE IS NOT  
LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR  
CONSEQUENTIAL DAMAGES OR LOSSES, ARISING FROM  
ANY CAUSE OR THEORY.  
Instruction Sheet  
Since some states or countries do not allow the exclusion or  
limitation of an implied warranty or of incidental or consequential  
damages, this limitation of liability may not apply to you.  
Introducing the DIS 90  
The DIS 90 is an optional accessory for use with the Fluke 98  
®
Automotive ScopeMeter Series II, Version 2.70 and higher, to  
Fluke Corporation  
P.O. Box 9090  
Everett WA  
Fluke Industrial B.V.  
P.O. Box 680  
7600 AR Almelo  
The Netherlands  
measure parade on Distributorless Ignition Systems.  
To check the version number press  
and  
simultaneously.  
98206-9090, USA  
Please contact your local representative for information about  
upgrading the version.  
Unpacking  
Safely using the DIS 90  
Check that the following items are included with the DIS 90 (see  
Figure 1):  
Warning  
Do the following to avoid electrical shock, fire, or  
personal injury:  
Ignition Adapter Unit with installed 9V battery  
Secondary Pickup Set with 4 black clamps  
Secondary Pickup Set with 4 red clamps  
Turn the engine off before making any  
connections.  
Use the DIS 90 only on properly insulated  
ignition cables.  
Keep the Fluke 98 and the DIS 90 leads away  
from rotating parts and engine parts producing  
heat.  
Thoroughly fix all test leads before doing a road  
test.  
Read the safety section in the Fluke 98 Users  
Manual (from page VI).  
Figure 3. Measurement setup with the DIS 90 for a 4-cylinder dual-spark ignition coil system.  
Connecting the DIS 90 for measurement  
Figure 3 shows a connection example for a 4-cylinder DIS engine.  
General connection procedure:  
Powering the DIS 90  
1. Connect the DIS 90 Adapter to the Fluke 98 Automotive  
ScopeMeter as shown in Figure 3. Use a ground lead to  
connect the COM input on the small connection unit to ground  
e.g. battery ground.  
2. Connect the round cable plug of the red secondary pickup  
set to the Ignition Adapter box on the input with the red  
grommet (connection to the input with the black grommet will  
not fit because of different plug pinning!)).  
Permanently  
powered  
Automatic power off  
after about 15  
minutes  
3. Connect the round cable plug of the black secondary pickup  
set to the Ignition Adapter box on the input with the black  
grommet. (Connection to the input with the red grommet will  
not fit because of different plug pinning!)  
Figure 1. DIS 90 Package Contents  
4. Connect the black secondary pickup clamps to the spark  
leads with negative polarity and the red secondary pickup  
clamps to the spark leads with positive polarity.  
You can check the polarities as follows (only possible with  
engine running):  
Figure 4. Connection of the unused pickups (example for six  
cylinders)  
Blinking when  
internal battery is  
OK  
and to get a reliable measurement result, these unused  
pickups must not be left unconnected.  
a. Use a black or red secondary pickup and clamp it to a  
spark lead.  
7. Clamp the Capacitive Secondary Pickup (CAP 90 or  
PM9096/001) on a spark lead with negative polarity (black  
pickup connected). Clamp it as close as possible to the spark  
plug (see figure 4). This cylinder is then displayed as first  
cylinder in the parade picture.  
b. If the Fluke 98 displays an upward spark voltage, this  
pickup is connected to the correct polarity. If a downward  
spark voltage is displayed, the pickup is connected to the  
wrong polarity. Then use a pickup with the other color for  
this cylinder. Bear in mind that the spark voltage may be  
low or not visible due to a defect. Refer to the section  
Indication of wrong polarity connectionson the back of  
this sheet.  
Figure 2. Powering the DIS 90  
c. Use the next black or red secondary pickup and repeat  
steps a and b until all pickups are connected.  
June 1997, Rev. 4, 12/97  
© 1997 Fluke Corporation,  
All rights reserved.  
Printed in the Netherlands  
All product names are  
trademarks of their respective  
companies.  
6. Clamp the remaining pickups on the connecting cable to the  
Ignition Adapter unit. See the example for four cylinders in  
Figure 3 and for six cylinders in Figure 4. For safety reasons  
 

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