ADLINK Technology PCI-8136, Руководство пользователя

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Operation Theory 35
4.5 Pulse Output
The PCI-8136 provides 6 pulse output channels. They are used to
send out constant-frequency pulse trains. When changing the out-
put frequency of any channel, there is at most 265ms time delay.
There are also 3 kinds of pulse outputs: (1). plus and minus pulse
inputs (CW/CCW mode); (2) pulse and direction input(Pulse/DIR);
(3). 90° phase difference signals(AB phase mode);
Pulse and direction input(Pulse/DIR)
In this mode, the high / low status of DIR defines the plus / nega-
tive direction, whereas OUT generates the pulse train.
Plus and minus pulses input mode(CW/CCW Mode)
In this mode, plus frequency (plus direction) goes on OUT,
whereas negative frequency (negative direction) is generated from
DIR.