National Instruments SCB-68A - Page 8

NI SCB-68A User Manual
© National Instruments | ix
Chapter 4
PFI 0 and Digital Input Measurements
PFI 0 Channel Pad Configuration..................................................................................... 4-1
Lowpass Filtering ............................................................................................................. 4-2
One-Pole Lowpass RC Filter.................................................................................... 4-5
Selecting Components for Lowpass Filtering .......................................................... 4-5
Adding Components for Lowpass Digital Filtering on
Digital Trigger Input Signals................................................................................. 4-6
PFI 0 Lowpass Filtering Applications ...................................................................... 4-7
Attenuating Voltage.......................................................................................................... 4-8
Selecting Components for Attenuating Voltage....................................................... 4-9
Accuracy Considerations for Attenuating Voltage................................................... 4-9
Adding Components for Attenuating Voltage on Digital Inputs.............................. 4-9
Digital Input Voltage Dividers ................................................................................. 4-10
Chapter 5
Fuse and Power Information
Power Supply Circuitry .................................................................................................... 5-1
Fuse................................................................................................................................... 5-1
Adding Power Filters........................................................................................................ 5-2
Appendix A
Specifications
Appendix B
Technical Support and Professional Services