Measurement Computing PCI-DAS6023 - Manual (Page 29)

PCI-DAS6023 and PCI-DAS6025 User's Guide Functional Details
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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. For detailed information on counter operations, refer to the 82C54
data sheet. This data sheet is available at www.mccdaq.com/PDFmanuals/82C54.pdf .
Figure 28 shows the timing of the CTR1 OUT signal for mode 0 and for mode 2.
Figure 28. CTR2 OUT signal timing