How To Calibrate Pulsar Speedometer

  • When using a GPS module to drive your electric speedometer, the only time when you do not need to calibrate the speedometer is when you connect to a speedometer that has not been previously calibrated. In other words, when the speedometer and GPS module are both new packaging, no packaging is needed because they have been calibrated the same at the factory. If someone has tried to calibrate the speedometer or GPS module first, they need to calibrate the GPS module to a pulsar speedometer.

    It is very easy to calibrate the GPS module to the speedometer. First, turn on the power, then press and hold the only button on the GPS module. After a few seconds, the needle on the speedometer will begin to climb. The longer the grip, the faster the climb speed. When the pointer on the speedometer reaches 80, stop holding it. We recommend stopping at around 70 and then using a series of momentary button presses. Finish now. It will time out after about 4 seconds and the pointer will return to zero.

    If you encounter an unstable or pulsating speedometer (especially when driving at low speed), please turn on the power of the speedometer and observe the LCD display on the speedometer. It will display the current PPM (pulses per mile) for one or two seconds, and then default to the odometer. If the PPM is much less than the factory PPM of 16000, please recalibrate both. Methods as below:

    Normally enter the speedometer calibration mode (full scale).

    Press and release the button to lower it to ½ mark (normally).

    Drive until the pulse count reaches 32000 (ie 16000 ppm), then stop driving. This does not need to be very precise, as long as it is close to 32,000.

    Press the trip button to end the calibration.

    Now, before you start driving, you need to recalibrate the GPS by pressing the button on the GPS module (80 on the speedometer).

    Now you are ready.

    If the above operation is successfully completed, but there are still very slow spikes or bounces, please return to the above operation, but double the pulse count to approximately 64000 pulses (32000 ppm) during the speedometer calibration and then recalibrate the GPS module again. A higher number of pulses basically increases the frequency of the speed signal, thereby making the signal smoother.