National Instruments 320174B-01 用户手册

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

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