Fluke DIS 90 User Manual

Dis 90, Ignition adapter instruction sheet

DIS 90

Ignition Adapter

Instruction Sheet

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

measure parade on Distributorless Ignition Systems.

To check the version number press

and

simultaneously.

Please contact your local representative for information about
upgrading the version.

Unpacking

Check that the following items are included with the DIS 90 (see
Figure 1):

•

Ignition Adapter Unit with installed 9V battery

•

Secondary Pickup Set with 4 black clamps

•

Secondary Pickup Set with 4 red clamps

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 Fluke’s 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.

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.

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.

Fluke Corporation

Fluke Industrial B.V.

P.O. Box 9090

P.O. Box 680

Everett WA

7600 AR Almelo

98206-9090, USA

The Netherlands

Safely using the DIS 90

Warning

Do the following to avoid electrical shock, fire, or
personal injury:

•

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).

Powering the DIS 90

Connecting the DIS 90 for measurement

Figure 3 shows a connection example for a 4-cylinder DIS engine.
General connection procedure:
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.

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!)).

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!)

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):
a.

Use a black or red secondary pickup and clamp it to a
spark lead.

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 connections” on the back of
this sheet.

Use the next black or red secondary pickup and repeat
steps a and b until all pickups are connected.

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

and to get a reliable measurement result, these unused
pickups must not be left unconnected.

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.

Figure 3. Measurement setup with the DIS 90 for a 4-cylinder dual-spark ignition coil system.

Figure 1. DIS 90 Package Contents

Figure 4. Connection of the unused pickups (example for six

cylinders)

Figure 2. Powering the DIS 90

Automatic power off

after about 15

minutes

Blinking when

internal battery is

Permanently

powered