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Contents
© National Instruments Corporation ix Lab-NB User Manual
Figures
Figure 1-1. The Relationship between the Programming Environment, NI-DAQ, and Your
Hardware............................................................................................................1-3
Figure 2-1. Parts Locator Diagram.......................................................................................2-2
Figure 2-2. Bipolar Output Jumper Configuration...............................................................2-4
Figure 2-3. Unipolar
Output Jumper Configuration.............................................................2-4
Figure 2-4. Bipolar Input Jumper Configuration..................................................................2-5
Figure 2-5. Unipolar Input Jumper Configuration................................................................2-5
Figure 2-6. Lab-NB I/O Connector Pin Assignments...........................................................2-6
Figure 2-7. Analog
Input Signal Connections......................................................................2-8
Figure 2-8. Analog Output Signal Connections....................................................................2-9
Figure 2-9. Digital I/O Connections.....................................................................................2-11
Figure 2-10. EXTCONV*
Signal Timing...............................................................................2-17
Figure 2-11. Posttrigger DAQ Timing (EXTCONV* High When Trigger Sensed)..............2-18
Figure 2-12. Posttrigger DAQ Timing (EXTCONV* Low When Trigger Sensed)...............2-18
Figure 2-13. Pretrigger DAQ Timing.....................................................................................2-19
Figure 2-14. Waveform Generation Timing with the EXTUPDATE*
Signal.......................2-20
Figure 2-15. NuBus Interrupt Generation with the EXTUPDATE*
Signal...........................2-20
Figure 2-16. Event-Counting Application with External Switch Gating................................2-22
Figure 2-17. Frequency Measurement Application................................................................2-23
Figure 2-18. General-Purpose Timing Signals.......................................................................2-24
Figure 3-1. Lab-NB Block Diagram.....................................................................................3-1
Figure 3-2. NuBus Interface Circuitry Block Diagram........................................................3-2
Figure 3-3. Analog Input and DAQ Circuitry Block Diagram.............................................3-3
Figure 3-4. Analog
Output Circuitry Block Diagram...........................................................3-8
Figure 3-5. Digital
I/O Circuitry Block Diagram.................................................................3-9
Figure 3-6. Timing
I/O Circuitry Block Diagram.................................................................3-10
Figure 3-7. Counter
Block Diagram.....................................................................................3-11
Figure 4-1. Control-Word Format with Control-Word Flag Set to 1...................................4-57
Figure 4-2. Control-Word Format with Control-Word Flag Set to 0...................................4-57
Figure 5-1. Calibration
Trimpot Location Diagram.............................................................5-2
Figure B-1. Lab-NB I/O Connector.......................................................................................B-1
Tables
Table 2-1. Lab-NB Jumper Settings....................................................................................2-3
Table 2-2. Port
C Signal Assignments................................................................................2-12
Table 3-1. Analog Input Settling Time Versus Gain...........................................................3-6
Table 3-2. Lab-NB Maximum Recommended DAQ Rates................................................3-6
Table 3-3. Bipolar Analog Input Signal Range Versus Gain..............................................3-7
Table 3-4. Unipolar Analog Input Signal Range Versus Gain............................................3-7
Table 4-1. Macintosh Slot Addresses..................................................................................4-2
Table 4-2. Lab-NB Register Map........................................................................................4-3
Table 4-3. Unipolar Input Mode A/D Conversion Values (Straight Binary Coding).........4-38