Function Of Control Elements - Bosch ETT 223 Instrucciones De Manejo

3.3 Function of control elements

Setting switch k ? (4)
LCD display (5)
Setting switch
for sensitivity (7)
Repeat key R (8)
Speed signal LED (9)
3.4 Connections
16
: Connections
11. Ground terminal
12. 12V pulse output
13. 3-pole socket for inductive coupling loop X1
14. Connection socket for plug-in power pack +12 V DC
15. 9-pole serial interface X2 (currently not used)
16. 16-pole socket for speed sensor
Sets the number of cylinders and
engine type.
Press the setting switch to the right
and hold to increase the cylinder/
stroke number.
Press the setting switch to the left
and hold to decrease the cylinder/
stroke number.
Displays self-test, number of cylin-
ders, engine type, engine speed
and signal strength.
3-step adjustment of the sensitivity
of the speed sensor.
Operation of this key stops the
current speed measurement and
starts a new measurement.
Flashes to indicate that an engine
speed signal is being received.
A fast flashing rate (approx.
10 times per second) indicates
that the engine speed signal is
strong enough.
A slow flashing rate indicates that
the engine speed signal is too
weak.
11 12
X1
+12VDC
459 643P
15
3.5 Installation
If the module is used in conjunction with engine diagnostic
systems, the engine-speed measuring module (1) and the retai-
ning bracket (17) can be secured at a suitable place on the engine
diagnostic system using Velcro-type fasteners (connection
sockets facing down).
! When installing the engine-speed measuring module, you
must observe that the holding surfaces are fat free and oil
free for the velcro strips.
B O S
C H
13
: Assembly suggestion, shown here with FSA 560, 3.140 etc.
14
17
1
15