Rate Converter
The rate converter circuit generates a line trigger signal at a frequency that is proportional to the frequency of the pulses delivered by the quadrature decoder circuit.
The rate conversion ratio RCR is defined as the ratio between the output rate and the input rate.
The possible values of RCR range from 0.001 up to 1000.0. The recommended values range from 0.01 up to 1. By default, value of RCR is 1.000.
The rate conversion factor is user-programmable through EncoderPitch and LinePitch.
- RCR = EncoderPitch/LinePitch; increasing LinePitch decreases the RCR and hence the output rate.
- The line trigger pulses are NOT phase-locked to the quadrature decoder output.
- The rate converter settings may not be modified while acquisition is in progress.