# Duty Cycle/PWM Measurement

To calculate the Duty cycle of a PWM signal, select Duty cycle/PWM in the drop-down box:

<figure><img src="/files/Cktzu1LotDi4ruPSdP04" alt=""><figcaption></figcaption></figure>

Also, set the CAN ID where The K Box will transmit the result.

<figure><img src="/files/PKZjCtnI53dQPoR591tK" alt=""><figcaption></figcaption></figure>

Set the Rate you wish to measure at:

<figure><img src="/files/g0tqyBbsllyJvV35Qsim" alt=""><figcaption></figcaption></figure>

Select the edge you wish to start measuring the duty cycle on.

<img src="/files/a7KOtuzgVsIE8hAqc4BJ" alt="" data-size="original">or<img src="/files/ljOcxCGwYWbjBOaPNF6M" alt="" data-size="original">according to whether the modulation is on the rising or falling edge:

### Pulse Wave Modulation examples:

#### e.g. 1)     Modulation on the falling edge:

<figure><img src="/files/0JB8ImQFc5AiX79UdWZ5" alt=""><figcaption></figcaption></figure>

#### &#x20;e.g. 2) Modulation on the rising edge:

<figure><img src="/files/i9VrsxB7BDYpy6sEgQeM" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
**Notes:**

* The K-Box will change the CAN message Rate for this measurement to prevent CAN bus overloading.
  {% endhint %}


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