Chapter 2 Specifications
2-10
2. 2 phase input
(1) 2 phase 1 multiplication input
When input pulse of A phase is ahead of B phase input pulse, at rising edge of A phase input pulse, Up count is operated.
When input pulse of B phase is ahead of A phase input pulse, at rising edge of A phase input pulse, Down count is operated.
Up/Down count classification A phase pulse rising A phase pulse falling
Phase of A and B (A-B) Up count (+1) -
Phase of A and B (B-A) - Down count (-1)
Up Down
B phase input
pulse
A phase input
pulse
Count 10 11 12 13 12 11 10 9
(2) 2 phase 2 multiplication input
When input pulse of A phase is ahead of B phase input pulse, at rising and falling edge of A phase input pulse, Up count is
operated.
When input pulse of B phase is ahead of A phase input pulse, at rising and falling edge of A phase input pulse, Down count is
operated.
Up/Down count classification A phae pulse rising A phase pulse falling
Phase of A and B (A-B) Up count (+1) Up count (+1)
Phase of A and B (B-A) Down count (-1) Down count (-1)
Up Down
B phase input
pulse
A phase input
pulse
Count 10 11 13 15 15 13 11 10
12 14 16 17 14 1216
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