Measurement Computing PCI-DAS6071 - Manual (Page 31)

PCI-DAS6071 User's Guide Functional Details
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CTR2 GATE signal
You can use the CTR2 GATE signal for starting and stopping the counter, saving counter contents, etc. It is
polarity programmable and is available at the CTR2 GATE pin. Figure 36 shows the timing requirements for
the CTR2 GATE signal.
Figure 36. CTR2 GATE signal timing
CTR2 OUT signal
This signal is present on the CTR2 OUT pin. The CTR2 OUT signal is the output of one of the two user’s
counters in an industry-standard 82C54 chip.
Figure 37 shows the timing of the CTR1 OUT signal for mode 0 and for mode 2.
Figure 37. CTR2 OUT signal timing
For detailed information on counter operations, refer to the data sheet at
www.mccdaq.com/PDFmanuals/82C54.pdf .