General Technologies TD101 SmarTach + D: Gas and Diesel Tachometer with Ignition Voltage Tester - Manual (Page 5)

DETAILED INSTRUCTIONS
BATTERY
The SmarTach+ is powered by an alkaline 9 volt battery. A
battery is supplied (reversed) in the battery compartment. Just
turn it around and connect it. The battery is good for hundreds
of tests but will eventually need to be replaced when the ‘LO
BAT ‘ sign starts flashing in the top left corner of the display.
To replace the battery, slide open the drawer at the back of the
instrument and replace the battery with a 9 volt alkaline battery
from a quality manufacturer such as Duracell (Part # MN1604)
or equivalent.
AUTO POWER OFF
The SmarTach+ incorporates an Automatic Battery Shut-Off
system. This means the unit will switch off its own power
about ONE MINUTE after the last button has been pressed,
or about ONE MINUTE after the last signal has been received
(RPM or Ignition Peak Voltage). Because of this, no OFF
switch is necessary, and none is provided.
TACHOMETER FUNCTION
Overview of the set up display sequence
1. Press the button marked TACH and observe the display
as it moves through the complete display sequence. The
first display will show a number followed by the letters
CYL for “cylinders”. Example: “4 CYL” or “8 CYL”.
2. After two seconds the display will change to show a
rotating symbol with the number 2 or the number 4. This
refers to 2 cycle or 4 cycle motor systems. After two more
seconds, the display will change again to show “0000”.
This “0000” display will be held until an ignition signal is
received.
3. If no reading is performed within one minute, the unit will
shut-off automatically, and the display will go blank. To
repeat the display sequence just press the TACH
button again.
Setting the number of cylinders:
The first press of the TACH button powers up the tester and
displays the setting for the number of cylinders of the last mo-
tor tested. If the number of cylinders displayed is correct for
your next test, no action is required.
If the number of cylinders displayed is not correct for the en-
gine you are going to test, the setting must be changed.
To change the setting, quickly press the TACH button again.
The cylinder display will change. Keep pressing TACH
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