Digatron DT-30K User manual

EXIT
MODE REVIEWMAX SET UP LIGHT
OFF RESET
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EXIT
REVIEW
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OFF RESET
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Welcome to Digatron
This manual covers the operation of your DT-30K instrument. Both racers and recreational riders can use
this instrument. Racers may be interested in recording lap times with the optional infrared beacon
transmitter and receiver or with the manual store switch.
This book provides the information you need to quickly set up and use your instrument. It is a great
reference guide.
If you are interested in learning more about how Digatron instruments can help you analyze your engine
functions and driving techniques, please visit our website, www.digatronusa.com, or phone (509) 467-
3128.
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Table of Contents
Instrument Functions ......................................................................................... 3
Battery Installation............................................................................................. 4
Setting Limits and Warning Lights.................................................................... 4
About Delay Time ............................................................................................. 5
Tach Calibration Number ................................................................................. 5
Recording........................................................................................................... 5
Moisture ............................................................................................................ 5
Erratic Readings................................................................................................. 6
Button Functions................................................................................................ 6
Designators Defined .......................................................................................... 7
Repairs and Warranty ........................................................................................ 7
Congratulations on your purchase of a brand new Digatron data acquisition system! We would
like to hear from you regarding this instrument. Please call, mail, fax or email us with comments,
questions, suggestions or improvements.
Digatron LLC
120 N. Wall St Ste 300
Spokane, WA 99201
1-866-DIGATRON
[phone] Fax
[email protected]
www.digatronusa.com
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Instrument Functions
Start Vehicle. Instrumentturns on automatically. If you are using the
optional infrared beacon transmitter and receiver,the instrument starts
recording lap times automaticallywhen a transmitter signal is received.
A. Power/Record
B. Overall Maximums
Press &
hold to view
maximums
and best lap
time.
1. 2.
Press & release
to cycle through
up to three sets
ofdata.
3. Repeatsteps
1 & 2 as
desired.
MODE
MAX
MODE
MAX
4.
EXIT
REVIEW Return to monitor / record mode.
C. Lap Times & Maximumsper Lap (optional)
1. EXIT
REVIEW Shows lap time for the first lap of the last Event. (Button
press is ignored if instrument is receiving a tach signal.)
2. OR Changes lap backward or forward one.
Displays flashwhen best lap is shown.
Displays E#,when changing to a different
Event. Hold to jump between Events.
LIGHT SET UP
3. Changes the functions being displayed.
Maximums for the currentlap are displayed.
MODE
MAX
D. Reset (clear memory)
1.
AND
Press and release at same time.
2.
Press when displayflashes.Canceled if notpressed
within10seconds.
SET UP
EXIT
REVIEW SET UP
E. Power Off
Theinstrumentwill turnoffautomaticallyifit does notreceive
anybuttonpresses or a tach signal.
1.
Turns instrument off, if it’s not recording
or receiving a tach signal.
OR
MODE
MAX
LIGHT
AND
3

Battery Installation
Two AAA batteries power the DT-30K. These allow the instrument to run for 40 hours with the backlight
on and 150 hours with the backlight off. The instrument will display , signaling that the batteries are
low, several hours before the functions becomes inaccurate.
To replace the batteries, remove the screw from the battery door on the back of the instrument. Replace the
two batteries, observing battery polarity.
If your instrument is stored for a long period of time, remove the batteries.
Setting Limits and Warning Lights
Limits and warning lights warn you of conditions that could be harmful to your vehicle’s engine. They
should be set at levels that allow you to react to the visual warnings before engine damage occurs.
Setting the Engine Limits and Delay Time
4
Press to return to monitor/recordmode.
From monitor/record, instrument enters Set Up mode.
Delaytime will be the first limit,see next page for
explanation.
1.
2.
3.
O
R
Press either button to change the
number being displayed.Hold the
button to change the number faster.
Press to setnextlimit.Repeatsteps 2 & 3 until all
limits and calibration numbers areset.
SET UP
SET UP LIGHT
MODE
MAX
4.
EXIT
REVIEW
Function limits are set in the following order: Delay Time, Temp1 (C1), Temp2 (C2), Tach (RPM) and
Tach calibration number. Also, if you are not using a function on your instrument, use a shorting plug and
set that function’s limit to any number greater than 200.

5
About Delay Time (Optional, for Racing)
Some sanctioning bodies do not allow racers to use infrared beacon transmitters and receivers. If
this is true for you, set your delay time to .1 seconds seconds.
The delay time allows your instrument to ignore extra beacon signals at the track. Delay time is the time,
in tenths of a second, that your instrument ignores beacon signals after receiving a signal. The delay time
must be less than your best possible time between beacons, or the instrument will miss your beacon signal.
Delay time is set in Set Up mode.
For example, if it takes you approximately 14 seconds to complete a run, set your delay number for 12
seconds. After your instrument receives its first beacon signal, it will ignore all signals for 12 seconds.
*Note: If you are not a racer, set your delay time to .1 seconds.
Tach Calibration Number
The Tach limit requires two separate parameters. The first is the maximum revolutions per minute (RPM)
for safe engine operation. The second number, the Tach calibration, allows the instrument to display the
correct RPM for your engine. The instrument divides the Tach input signal by the Tach calibration
number. This number can be between .5 and 31.
The most frequently used numbers are:
1 - for single cylinder 2 cycle and most 4 cycle motors
2 - for 2 cylinder 2 cycle and 4 cylinder 4 cycle motors
If you are unsure of the exact Tach calibration number for your engine, experiment. If your calibration
number is currently set at 1 and the RPM displayed is double what it should be, set the calibration number
to 2.
Recording
The instrument records in sessions called Events (shown by an E), which start each time the instrument
begins recording. Within Events, time segments (Laps, Lon the display) are created with infrared beacon
receivers and transmitters or with a store switch. To end an Event your engine must be turned off, the Exit
button must be pressed, or the Tach must go below 200 RPM (this value can be changed on your PC).
Moisture
Your instrument is designed to be water resistant. We recommend keeping it as dry as possible. Please
cover or remove your instrument before washing your vehicle. Digatron offers tach bags to help keep the
instrument dry. If moisture does get inside the instrument, remove one endcap and let the instrument air
out in a dry environment. A hairdryer, on low power, can accelerate drying.

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.

Designator Definitions
The following is a list of designators that can appear in the main part of your display:
displayed when entering Set Up mode
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displayed if the Review button is pressed and there is no recorded data
displayed when setting the Tach calibration number
displayed when your batteries are low
during a reset of memory, press the ↑button to proceed
displayed if a reset of memory was successful
displayed if a reset of memory is not successful
last lap time
current lap time
best lap time
displayed when recording lap times and the Review button is held
displayed if the engine is on when trying to enter Review
, when setting limits, displayed for temp1 and temp2 respectively
when shown on the top of a display, the function is over ranging. when shown on the bottom of a
display, the function is under ranging
The following is a list of enunciators that can appear on the side of your displays. These show what
function is in the display:
RPM tach EGT exhaust gas temp
MEM memory ERR error
CHT cylinder head or water temperature
Repairs and Warranty Information
If you have any questions about the operation of your instrument, please call. One of our technicians will
be happy to help you. Please have your instrument nearby to help while troubleshooting with the
technician.
With the exception of physical damage and normal wear, there will be no charge for service required on
internal parts for two years from date of purchase and for external parts for one year. Be sure to fill out and
return your warranty card for our records. If we do not have a card on file for your instrument, you will be
charged for repairs unless you can provide us with a proof of purchase date.
When returning an instrument for repair, please use the repair form found on our website or enclose a note
indicating your return address, phone number and a detailed description of the problem. Send your
instrument and sensors so that we can check the complete system.
Send repairs to:
Digatron LLC
120 N. Wall St. Ste 300
Spokane, WA 99201
www.digatronusa.com
Phone: [phone] Fax: [phone]/2008