General Technologies TD101 SmarTach + D: Gas and Diesel Tachometer with Ignition Voltage Tester - Manual (Page 6)

repeatedly or hold down the TACH button until the correct
display is obtained. Repeated quick button pressing is faster
than holding down the button. Your choice of cylinders is:
1CYL, 2CYL, 3CYL, 4CYL, 5CYL, 6CYL, 8CYL, 10CYL
and 12CYL.
This list of available cylinder settings will repeat if you continue
to press TACH after 12CYL.
In order to be speedy in normal (experienced) use, the time
available to make a selection of cylinders is arranged to be
short. You must be quick in pressing the TACH button when
changing the cylinder settings.
If you hesitate too long in making your choice of cylinders, the
display will switch to the next setting selection which is the
choice of 2 or 4 cycle type ignition systems. If this happens be-
fore you have finished setting the correct number of cylinders,
just wait until the display switches to the “0000” reading. As
soon as you see the “0000” display, press the TACH button
again to resume your cylinder selection.
Setting the numbers of cycles (strokes):
After you have set the correct number of cylinders, stop press-
ing TACH and wait. After two seconds the display will switch
to the next function, which is the selection of ignition system
types. You will see a rotating symbol signifying “cycles”, fol-
lowed by the numbers 2 or 4. These numbers refer to two
or four cycle ignition systems (sometimes referred to as “two
stroke” or “four stroke” systems).
It is necessary to set the correct ignition cycle on the display by
pressing the TACH button to switch between 2 and 4.
If you hesitate too long in making a change of cycles, the dis-
play will switch to the “0000” reading. If this happens while an
incorrect cycle number is displayed, just press TACH once and
wait while the display switches back to the setting you made
for cylinders and then switches to the cycle selection again. At
this point one quick press of the TACH button will change to
the correct cycle number.
After setting cycles, the display will switch to “0000”. This
means that the SmarTach+ is now ready and listening to
receive signals from the engine’s ignition system. If no signals
are received within one minute, the SmarTach+ power supply
will automatically switch off and the display will go blank. If
this happens, your settings of cylinders and cycles are not lost
because they are preserved in the SmarTach+ memory.
The settings memory means that when you switch on again
(by pressing TACH once quickly), it will not be necessary to set
the instrument again, unless you are going to test a different
type of engine.
The settings memory feature is useful when a technician is
mostly working on one type of engine, because his usual set-
tings (the last ones set when the instrument switched off) are
memorized and will come up again when the instrument is
switch on.
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