Below are supplemental instruction sheets from Digatron

 SUPPLEMENTAL OPERATING INSTRUCTIONS

SOFTWARE CHANGES

Your instrument contains the following software changes:

1. When turned on, the instrument will begin a 10 second display test. At the end of the test your instrument’s serial number will be displayed. To bypass this test, press the "MODE" switch.

2. Tach Calibration will now show a number between .5 and 31. Set at .5 for single cylinder 4 cycle motors that fire every other revolution.

3. The "Over Limit / Over Range" feature now operates as follows:

When conditions exceed the set limits, the display where the over limit condition occurs will flash. The instrument automatically switches to this function if it is not being displayed.

When conditions exceed the range of the instrument, the display will show 3 bars at the top of the display where the over range conditions occurs. This condition can also be caused by a bad or disconnected sensor.

ERRATIC READINGS

Erratic readings are usually caused by ignition noise getting into the instrument. In the case of the "30 Series" memory instruments this "noise" can cause the stored data to be bad. In extreme cases a large noise spike can cause the limits and tach calibration to reprogram themselves. If your memory instrument appears to be doing strange things, put it in the "set limits" mode and check to see that the limits and calibration are still where you originally set them.

Noise problems can normally be solved by installing a resistance plug boot. We recommend using a NGK boot. (NGK part # LB05EMH)

Also:

  1. Keep your temp and tach leads separated by at least 3". Do not ty-wrap or tape leads together, as this can induce noise into the system.
  2. Route the leads as far away from the coil as possible.
  3. 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.
  4. Running your leads through separate sections of fuel line will protect them from cuts and abrasions, but will not shield them from ignition noise.
  5. Be sure that all sensors are connected to the instrument, and that all connectors fit together snugly.
  • Do not route leads with throttle cable or coil leads.

In situations where installing a resistance plug boot & rerouting the leads do

not eliminate the problem, try using our new TS-110   isolated tach sensor.

TROUBLESHOOTING IDEAS (KARTING):

If you are experiencing erratic readings, it may be caused by ignition noise getting into the instrument. In the case of the 30 Series memory instruments, this "noise" can cause the stored data to be bad. If your memory instrument appears to be doing strange things, put it in the "set limits" mode and check your limits and calibration. Here are some other tips that may help with your instrument:
  1. Keep your temperature and tachometer leads separated by at least 3 inches. Do not tie-wrap or tape leads together, as this can induce noise in the instrument.
  2. Route the leads as far away from the coil as possible.
  3. Install the tach lead on the plug wire at least 2 inches back from the plug boot. If you still have a problem, try a different location on the plug wire.
  4. Be sure that all sensors are connected to the instrument and that all connectors fit together snugly. If you are not using a function, you need to use a shorting plug on that pigtail.
  5. If you are using an exhaust gas temperature sensor, make sure it is grounded.
  6. You can run your leads through separate sections of fuel line to protect them from cuts and abrasions, but it will not shield them from ignition noise.

Please feel free to call Digatron with any other questions.

**WE STRONGLY RECOMMEND THE USE OF A TS-110 TACH SENSOR FOR ANYONE WITH A HONDA, YAMAHA OR MODIFIED BRIGGS ENGINE OR ANYONE EXPERIENCING ERRATIC TACH READINGS OR HIGH MAX RECALL OF THE TACH FUNCTION.

SENDING IN A REPAIR:

When sending in an instrument to Digatron for repair, please include a note with the following:
    1. Your name, shipping address, and phone number.
    2. A brief description of the problem and/or work you would like to be done on your instrument.
    3. Note a method of payment. This method can be either COD or credit card. UPS no longer accepts cash for COD shipments, but they will take a money order or certified check. Digatron also accepts Visa and Mastercard. If you choose to use your credit card, include the number, expiration date and name on the card, in your note. You can also specify in your note that you would like Digatron to call you to get the credit card number over the phone.
    4. Digatron’s policy is that they will call you if the charges will be over $50.00 per instrument, but let them know if you would like an estimate regardless of the cost.
  • Also, please send in the leads for your instrument to have them checked out, as they can often be the problem.

Digatron quotes 10-15 working days, once they receive the instrument, to repair it. Please send the instrument to: Digatron
Dept TSR0899
8102 North Freya Street
Spokane WA 99217
Phone: (509) 467-3128  Fax:(509) 467-2952