Measurement Computing 6224 - Manual (Page 21)

4-2 Counter Input 6224 User’s Manual
Encoder Settings
Resolution The encoder resolution, which is the number of full quadrature cycles per full shaft
revolution (360 mechanical degrees). Choices are:
 X1 – One count per cycle (default)
 X2 – Two counts per cycle
 X4 – Four counts per cycle
Encoder Sources There are three encoder sources – A, B, or Z. For each source select one of the
digital pins (Digital Line 0 – Digital Line 7)
When set for Encoder measurements, the device can count "negative" values;
that is, when counting down, the encoder will continue counting down below 0.
This capability is useful when calculating the position of an encoder.