Solution:

Actually, user can use digital output to emulate AB phase signals, then test two pulse function of PCL-833 by this way. We set bit 0 as phase A and bit 1 as phase B, then control digital output to form AB phase waves. The relationship between digital output and AB phase is shown as follows: Phase A leads phase B: Bit 0 ( phase A ) => 1 1 0 0 _|~~|_ Bit 1 ( phase B ) => 0 1 1 0 __|~~|_ D/O value => 1 3 2 0 Phase A lags phase B: Bit 0 ( phase A ) => 0 1 1 0 __|~~|_ Bit 1 ( phase B ) => 1 1 0 0 _|~~|__ D/O value => 2 3 1 0 The attached files are for your reference.