Design Technology Tiny-Tach 2A Operating Instructions

INITIAL SETUP
(skip if RPM reading is correct)
The default setting 360° should work for most engines.
All functions of the
are accessible by
TINY-TACH
TM
pushing the "SELECT" button.
Model 2A Initial Setup:
• Push "SELECT" button several times until display
shows 360° "DO NOT RELEASE BUTTON" until
"SET" appears in the upper right corner of display.
Once "SET" appears release and press "SELECT"
button to toggle through all degree settings.
• Stop at correct degree setting for your engine
(i.e. 360°, 120°, 90° etc.) see figure1
• Wait for 30 seconds and the display will return to
"TOT" Total Hours.
TINY-TACH
• is now ready to use.
TM
TIP: Most single cylinder air cooled engines idle
around 1400 RPM, if the RPM displayed is too low
set the value to "720", If the RPM is too high set the
Defalut setting
value to a lower Degree number "180"or lower.
s
45° = 8 sparks per revolution
60° = 6 sparks per revolution
90° = 4 sparks per revolution
120° = 3 sparks per revolution
180° = 2 sparks per revolution
360° = 1 spark per revolution
720° = 1 spark per 2 revolution
Figure1
METER OPERATION
When the engine is started, the display will indicate the
RPM of the engine. When the engine is shut down, the
display will show hours and minutes.
TOTAL TIME
(123 Hours 45 Minutes)
TOT = Total Hours of operation.
- This is always displayed when the engine is off.
- TOT time CANNOT be reset.
RPM
Typical RPM display when engine is running.
Tachometer and Hour meter
2A OPERATING INSTRUCTIONS
JOB TIMER
A RESET FUNCTION used for interval tracking.
JOB = Hours of operation since the timer was reset.
JOB
12
To view "JOB" time push the "SELECT" button once.
To reset "JOB" time: Push and Hold "SELECT" button
until display shows "RESET" and show hours that have
accumulated on the current job.
When you RELEASE the "SELECT" button the "JOB"
display will reset to "00:00". You will begin to record the
next job interval.
JOB
Tachometer and Hour meter
2A ADJUSTABLE
• 0 to 19,999 RPM Display
• 1/2 Second RPM Update
• Resettable Job Timer
• Total Hours (Non resettable)
Use on most engines from single cylinder
lawn mowers up to V8 engines.
User Adjustable spark setting from 1 spark
to 8 sparks per revolution.
Design Technology, Inc.
768 Burr Oak Drive, Westmont, IL 60559
(630) 920-1300
www.tinytach.com
RESET
:
:
34
RESET
Model
2A