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PCIE-1816_1816H User Manual
Chapter 3
S
ignal Connections
Analog Threshold Trigger
For analog input operations, an analog trigger event occurs when the PCIE-1816/
1816H detects a transition from above a threshold level to below a threshold level
(falling edge), or a transition from below a threshold level to above a threshold level
(rising edge). User should connect analog signals from external device or analog out-
put channel on board to external input signal ATRG0 and ATRG1. On the PCIE-
1816H, the threshold level is set using a dedicated 16-bit DAC. By software, you can
program the threshold level by writing a voltage value to this DAC; this value can
range from -10V to +10V.
Figure 3.12 External Analog Trigger Source Connection
3.3.3
Digital Signal Connections
The PCIE-1816/1816H has 24 digital input/output channels and they can be config-
ured as input or output channels. The digital I/O levels are TTL compatible.
Digital Input Connections
Each digital input channel accepts either dry contact or 0 ~ 5 V
DC
wet contact inputs.
Dry contact capability allows the channel to respond to change in external circuit
when no voltage is existed.
Figure 3.13 Wet and Dry contacts
Содержание PCIE-1816
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Страница 10: ...PCIE 1816_1816H User Manual 4 Figure 1 1 Installation Flow Chart ...
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Страница 37: ...Appendix A A Specifications ...
Страница 38: ...PCIE 1816_1816H User Manual 32 A 1 Function Block ...
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Страница 43: ...Appendix B B Operation Theory ...
Страница 61: ...55 PCIE 1816_1816H User Manual Appendix B Operation Theory ...