- 6 -
CZ sincro
DG83 D
Connect the unit as shown in Fig. 5. After connection to battery, the unit
automatically sets for measurement: Advance, RPM, Dwell in milliseconds.
See chapt. 4 for Dwell measurements in percentage or degrees.
Press key
2
4
to select 1spark per revolution on DIS systems.
Follow the instruction aside to select 2 sparks per revolution.
A blinking zero shows a lack of electrical signal.
3.1 In distributor systems, fit the clamp on the spark cable of Cylinder N.1
with the arrow pointing towards the spark plug; in DIS systems it
could be necessary to reverse it. In coil per plug systems, that include
the return cable to ground of the secondary, connect the clamp with the
arrow pointing to the opposite direction of the spark-plug (Fig.4).
Should the return cable not be included, connect the inductive clamp to
the cable connected to the coil's negative (–) pole.
The TL 220 cable in Fig.5, measures Dwell and performance of the
ignition system described in chapter 4.
3.2 Stabilize idle speed by bringing the engine to the normal operating
temperature. Disconnect the tube of the vacuum cap if foreseen by the
Data Manual. Press key D, point the flash towards the TDC marks,
align them by pressing keys C + / – and read the advance. By releasing
key D, RPM and advance readings will be stored for about 6 seconds,
then the unit goes back to measurement.
3.3 Increase engine speed,realign TDC marks and compare the advance
increase to the manufacturer’s data. By reconnecting the cap tube,
advance should increase. If advance does not increase, check the cap.
3.0 ADVANCE MEASUREMENTS
Fig. 5
TDC
TL220
cable
Flash key
TDCmarks
aligner
12V
STROBOSCOPIC IGNITION ADVANCE AND DWELL MEASUREMENT
+ 15
CONNECTION OF THE INDUCTIVE
CLAMP ON COIL PER PLUG SYSTEMS
ATTENTION
The coil primary cables’ bundle
must have 3 wires: + 15, coil
negative and return to ground
of secondary.
To timing
light
Coil
primary
Fig. 4
Fig. 3
Black
Red
V
2
4
RESET
STROBOTESTER DG 83- D
min.
V=
2 sparks per revolution
1 sparks per revolution (DIS)
1 sparks each 2 revolution
ATTENTION
Some motorbikes have
2 sparks per revolution
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