General Technologies TA300 SmarTach D : Digital Diesel Engine Tachometer - Manual (Page 2)

2. TECHNICAL SPECIFICATIONS
2.1 General Specifications
Display: LCD 4½ Segment main readout, 2 x 3½ for maximum and
minimum readout, indicators for low battery, number of cycles
functions and measurement units.
Update rate: 3 per second (for LCD).
Engine system Comp. Fuel injection pump with lines for each cylinder.
Engine cycles:
2 and 4 cycles.
Fuel injection line: Up to 9 mm dia. (Depending on piezoelectric sensor used)
Power: 9 Volt battery, type MN1604.
Auto power off: Automatically powers off after 3 min. of no operation.
Battery life: Approximately. 30 hours. (w/alkaline battery).
Cable length: 6’ (1.8 m)
Dimensions: 6” x 4” x 1.5” (158 x 100 x 37 mm) without cable.
Weight: Approximately. 14 Oz. or 406 g. (Including battery).
Included accessories: Padded hard carrying case, user’s manual, rubber holster and
1 x 9 Volt alkaline battery.
2.2 Electrical Specifications
• The specifications below are typical at 23° C, and will vary slightly from device to device,
and with temperature. The input voltage should not exceed the indicated maximum
values, to prevent personal injury or damage to the instrument.
Page 2
Table of contents.
1. Safety Rules Page 1
2. Technical Specifications Page 2
2.1 General specifications Page 2
2.2 Electrical Specifications Page 2
3. Operation Page 3
3.1 Instrument description Page 3
3.2 LCD Display Page 3
3.3 Buttons description and operation Page 4
3.4 Measurement procedures Page 5
3.5 Additional functions Page 6
4. Application information Page 7
4.1 Using the piezoelectric sensor Page 7
4.2 Troubleshooting Page 8
5. Maintenance Page 9
5.1 Battery replacement Page 9
5.2 Cleaning Page 10
6. Warranty Page 10
1. SAFETY RULES
• This instrument is designed for indoor use at temperatures between 32° and 104° F
(0°C and 40°C) and altitudes up to 6500 ft (2,000 meters).
• To ensure that the instrument is used safely, follow all safety and operating instructions
in this operation manual. If the instrument is not used as described in this operation
manual, the safety features of this instrument may be impaired.
• Do not use the instrument if the instrument, the cables or the piezoelectric pickup, or
if you suspect that the instrument is not operating properly.
• When using the instrument, keep away from moving parts (fan, drive belts, etc) and
hot objects (exhaust pipes, muffler , catalytic converter, etc), to avoid personal injuries
and damage to the instrument, the cable or piezoelectric sensor.
• Do not connect or apply more than 42 VDC or any AC current directly to the connec-
tors or the piezoelectric pickup.
• At all times, to avoid electrical shock, use CAUTION when working with electrical
circuits above 60V DC or 25V AC rms. Such voltages pose a shock hazard.
• Do not operate this instrument with the battery cover off.
• To avoid electrical shock or damage to the instrument, do not exceed the specified
input limits.
Exceeding the limits listed above when using this apparatus, or not observing
the precautions listed above can expose you to physical injury and permanently
damage your instrument and/or parts and components of the vehicle under test.
“V Ready” and “GTC” are registered trademarks of General Technologies Corp.
Function Measurement
Range
Accuracy/Repetitivity Input
Characteristics
RPM
100 to 19999 RPM
2 and 4 cycles
Accuracy: 0.1% ± 1 LSD
Input Impedance:
2 MΩ minimum +
100 pF (Max).
Input Protection:
± 42 VDC Max.
Sensitivity
Adjust
Signal sensitivity
adjustable from 1 to 10
Default setting: 5
Trigger Level
Adjust
Trigger level adjustable
from 20% to 80%
of peak input signal
Default setting: 50%