My tach reading is low, or I am missing the first digit
of the tach number. What is wrong?
A : Check the
limits. The tach divide by, or calibration number,
may be set to a higher number than appropriate. The
tach divide by number is equal to the number of times
the engine fires per revolution. For most engines,
the tach divide by should be set to one (1). See the
operating instructions for setting the tach divide
Why is my tach reading only three digits?
A : The RPM reading
is displayed in thousands of RPM's. Example: a reading
of 6.50 is equal to 6,500.
My Kart tach reading is erratic. What can I do to fix
A : Most erratic
kart tach readings are caused by ignition noise. Try
separating sensors and keeping them away from the
coil. Install the tach sensor one to two inches from
the end of the plug boot and try a resistive plug
boot (NGK part LB05EMH). If these suggestions do not
Digatron to discuss other tach sensor options.
Why does my instrument turn off after 10 minutes?
A : The tach
function must be hooked up and working for the unit
to stay on for more than 10 minutes.
What batteries will work best with my instrument?
A : For instruments
using "AA" or AAA batteries,
we recommend using a fresh set of alkaline batteries,
without test dots. If you do use batteries with test
dots, turn the dots to the side. Pressure from the
battery cover, springs, and vibration have been known
to press the test dots hard enough to discharge them.
When I start my engine why are there bars across the
top of the display?
A : Most likely
a sensor is not hooked to the instrument, or the sensor
is damaged and not functioning properly. All sensors
should be plugged into the instrument when the engine
is on. A shorting plug may be used in place of a temperature
sensor. Additionally, if two functions share the same
display, like RPM/TEMP, and the temperature sensor
is not attached when the engine is started, the temp
is read as an over limit and over range. The display
will switch to the temp reading, and three bars at
the top of the display will flash until the engine
is turned off or the sensor is plugged in.
I just crashed, is my instrument worth repairing?
A : Yes. Almost
all instruments are repairable at a reasonable cost.
You may request an estimate or know that we will call
you if the repair is over $75.
My sensors are the wrong length for my application.
Can I get different lengths?
A : Yes. Sensors
can be built to any length requested. We can also
shorten existing sensors.
Why does my new instrument power up differently that
my old one?
A : Newer instruments
power up with a display test which includes the units
serial number and the software version. Press the
Mode Switch to bypass the test.
I would like to change one of my temperature sensors
to a different temperature sensors. Example: Exhaust
instead of head temp. Does my instrument need to be
A : It depends
on what model and version number you have. Contact
Digatron, with your instrument in hand, and we
will assist you in determining which sensors you can
use with your instrument. If needed conversions, or
trade ins, are also available to help meet your
On instruments with lap time capabilities, how do I avoid
multiple beacon signals?
A : The easiest
way to avoid multiple beacons is to set the dly,
delay, number on your instrument to the number of
seconds just under your best lap time. By doing this
your instrument will register the first beacon it
comes to and then ignore all other beacons until that
number of seconds has passed. The dly
number is set in the set limits portion of your instrument.
Note: If your lap timing instrument does not have a
dly number, or you cannot find it in your
instrument, please contact Digatron.
Do I have to have my own beacon transmitter? What beacons
will my Digatron instrument pick up?
A : A Digatron
instrument, with a Digatron beacon receiver attached,
will pick up a Digatron or AIM beacon signal. Only
one beacon is needed on the track for lap times. Additional
beacons can be placed on the track for split times.
What does dly mean under the set limit portion
of my instrument? How do I set it?
A : The delay
number allows you to recognize the first beacon transmitter
and then ignore all subsequent beacons for the number
of seconds you enter at the dly option.
What is the colored wire on my tach sensor?
A : The colored
wire on your tach sensor is an antenna. If you tach
readings are low and erratic you need more colored
wire tie-wrapped down the spark plug wire. High erratic
tach readings require less wire on the spark plug