National Instruments 321906B-01 用户手册

Chapter 1

Routing Signals with Your NI 2501/2503

©

National Instruments Corporation

1-5

NI 2501/2503 User Manual

Figure 1-1. Front Connector Pinout Assignments for Two-Wire Mode

CH23–

CH22–

CH21–

CH20–

CH19–

CH18–

GND

+5 V

COM3–

COM2–

CH17–

CH16–

CH15–

CH14–

CH13–

CH12–

AB1–

AB0–

CH11–

CH10–

CH9–

1_WIRE_LO_REF

1

CH8–

CH7–

CH6–

COM1–

COM0–

CH5–

CH4–

CH3–

CH2–

CH1–

CH0–

CJS0–

1

35

2

36

3

37

4

38

5

39

6

40

7

41

8

42

9

43

10 44

11 45

12 46

13 47

14 48

15 49

16 50

17 51

18 52

19 53

20 54

21 55

22 56

23 57

24 58

25 59

26 60

27 61

28 62

29 63

30 64

31 65

32 66

33 67

34 68

CH23+

CH22+

CH21+

CH20+

CH19+

CH18+

EXT_TRIG_IN

SCAN_ADV

COM3+

COM2+

CH17+

CH16+

CH15+

CH14+

CH13+

CH12+

AB1+

AB0+

CH11+

CH10+

CH9+

GND

CH8+

CH7+

CH6+

COM1+

COM0+

CH5+

CH4+

CH3+

CH2+

CH1+

CH0+

CJS0+

1

not used in two-wire mode