Let's assume the encoder speed (RPM) is 1000 and the counts per revolution (CPR) is 2000.

The output frequency of an encoder can be calculated using the formula:

Output Frequency (Hz) = (Encoder Speed (RPM) * Counts Per Revolution) / 60

Let's plug in the values:

Output Frequency (Hz) = (1000 RPM * 2000 CPR) / 60 = 33333,33 Hz

Therefore, the output frequency of the encoder in this example would be approximately 33,33 KHz.

Remember that this calculation assumes that every count in the CPR is being read (4x encoding). Depending on the encoding mode, this number could be different.