National Instruments DAQPad-6020E User Manual page 10

Chapter 4
Digital I/O
Extended Digital I/O ......................................................................................................4-2
Port 3 Signal Assignments...............................................................................4-2
Power-On State................................................................................................4-3
Timing Specifications......................................................................................4-4
Mode 1 Input Timing.......................................................................................4-6
Mode 1 Output Timing....................................................................................4-7
Mode 2 Bidirectional Timing ..........................................................................4-8
Power-On States of the PFI and DIO Lines...................................................................4-9
Connecting Digital I/O Signals......................................................................................4-9
Getting Started with DIO Applications in Software ......................................................4-10
Chapter 5
Counters
Counter Triggering ........................................................................................................5-1
Start Trigger.....................................................................................................5-1
Pause Trigger...................................................................................................5-2
Counter Timing Signals .................................................................................................5-2
Counter 0 Source Signal..................................................................................5-3
Counter 0 Gate Signal .....................................................................................5-4
Counter 0 Internal Output Signal ....................................................................5-5
Counter 0 Up/Down Signal .............................................................................5-6
Counter 1 Source Signal..................................................................................5-6
Counter 1 Gate Signal .....................................................................................5-7
Counter 1 Internal Output Signal ....................................................................5-8
Counter 1 Up/Down Signal .............................................................................5-9
Frequency Output Signal.................................................................................5-9
Master Timebase Signal ..................................................................................5-9
Getting Started with Counter Applications in Software ................................................5-10
Chapter 6
Programmable Function Interfaces (PFI)
Inputs .............................................................................................................................6-1
Outputs...........................................................................................................................6-1
© National Instruments Corporation
Changing DIO Power-On State to Pulled Low .................................4-3
CTR 0 OUT Pin ................................................................................5-6
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Contents
E Series User Manual