6
Erratic Readings
If the instrument encounters excessive electrical interference it will display ERR on the left side of the top
display. The stored data might be invalid, and may need to be erased. To erase your stored data, see Reset
on page 2.
The ERR enunciator can also indicate an incorrect instrument or sensor installation. If your instrument is
doing strange things, put it in Set Limits and check to see that the limits and calibration number(s) are still
where you set them (see page 4).
Installing a resistance plug boot can normally solve electrical interference problems. We recommend
using an NGK boot, # LB05EMH.
To avoid erratic readings:
• Keep your temperature and Tach leads separated by at least 3".
• Route the leads as far away from the coil as possible.
• Install the Tach lead on the plug wire at least 2" back from the plug boot. If you still have a
problem, try a different location on the plug wire.
• Make sure your tach sensor ground wire is attached to bare metal.
• Replacing one or all of your sensors often solves this problem.
Please contact Digatron if your problem continues.
Button Functions
Max / Mode (3) functions
A. Turns the instrument on.
B. Press to view different functions.
C. Press and hold to view maximums and best lap times.
↓ / Light
(2) functions
A. Press and hold to dim warning lights, and turn backlight on and off.
B. Decreases values in Set Up.
↑ / Set Up
(2) functions
A. Enter Set Up.
B. Increases values in Set Up.
Review / Exit
(2) functions
A. Press for lap times and lap maximums.
B. Exit Review and Set Up.
Reset Instrument
Erases recorded data and for troubleshooting.
A. Press Review / Exit and ↑ / Set Up at the same time.
B. Press ↑ / Set Up before 10 seconds passes.
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