This manual introduces the ADD503C digital tachometer, describing its main features and intended automotive diagnostic applications. It includes basic operating steps, safety precautions, and maintenance guidelines.
Technical data such as measurement range, accuracy, and temperature limits are listed, along with wiring and connection details. The document also contains reference tables and troubleshooting tips for field use.
| Measurement range | 0.5‑19.999 |
|---|---|
| Accuracy | ±0.05% + 1 digit |
| Operating temperature range | -50 °C to 122 °C |
The device measures speeds from 0.5 to 19.999 units.
Its accuracy is ±0.05% plus one digit.
It can be used from –50 °C up to 122 °C.