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2. TECHNICAL SPECIFICATIONS
2.1 General specifications
Display:
3.5” TFT LCD, 320 x 240 pixels resolution.
Frame rate:
Up to 30 times per second.
Ignition system type:
Coil on plug, coil near plug, DIS, waste spark, conventional,
and magneto.
Engine cycle:
2 or 4 strokes.
Power (internal):
3.2 volt/1500 mAh, rechargeable LiFePO4 battery.
Auto power off:
Automatically powers off after 3 min. of inactivity.
Battery life:
Approximately 6 hours of continuous operation.
USB connector (input): Micro USB (5 Volt / 0.5 Amperes DC).
Probe length:
13.5” (34 cm) including sensor.
Dimensions:
6.3” x 3.9” x 1.3” (160 x 99 x 34 mm) without probe.
Weight:
Approximately 14 oz. or 406 g without probe.
Included accessories: Spark plug wire sensor, coil on plug sensor, BNC flexible probe,
protective rubber holster, padded hard carrying case, micro
USB cable, AC power adaptor, and user’s manual. The model
GTC505m also includes a 78” (2 m) extension cable and a clip-on
spark plug wire sensor.
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.
Measurement Mode
Measurement Range
Accuracy/Resolution
Tachometer
400 to 19999 RPM
2 or 4 stroke and waste spark
Accuracy: 0.5% ± 1 LSD
Spark plug voltage
0 to 50 kV
Resolution: ± 0.01 kV
Spark burn (firing) time
0 to 12 ms
Resolution ± 0.05 ms
Dwell angle
0 to >270° (4 stroke / 600 RPM+)
0 to >180° (2 stroke / 750 RPM+)
Resolution: ± 0.1º
Ramp time (ignition coil
primary current ramp time)
0 to 35 ms
Resolution: ± 0.05 ms
