National Instruments SCB-68 NI 670, DEVICES

Chapter B Quick Reference Labels

© National Instruments Corporation B-3 SCB-68 Shielded Connector Block User Manual

Figure B-2. NI670X Devices

S4

* 68 GENERIC TERMINALS

ACCESSORY POWER OFF)

(TEMP. SENSOR AND

S5

23

57

S3

S2

S1

58

24

25

59

27

60

26

61

28

VCH1

66

ICH17*

62

29

30

63

64

31

32

65

AGND0/AGND16

ICH16*

AGND1/AGND17

VCH0

VCH3

ICH19*

AGND2/AGND18

ICH18*

AGND3/AGND19

VCH2

VCH5

ICH21*

AGND4/AGND20

ICH20*

AGND5/AGND21

VCH4

VCH7

ICH23*

AGND6/AGND22

ICH22*

AGND7/AGND23

VCH6

67

33

34

68

ICH30*

AGND15/AGND31

45

11

DGND

DGND

DIO6

AGND

DGND

ICH31*

44

10

DIO7

43

9

41

42

8

DIO5

40

7

2DIO0

DIO1

DIO3

RFU

DIO4

DGND

DGND

6

39

5

38

DIO2

4

37

DGND

3

36

+5V OUTPUT

DGND

1

35

SCB-68 Quick Reference Label

NI 670

X

DEVICES

SIGNALPIN #

PIN # SIGNAL

VCH15

ICH24*

VCH8

AGND14/AGND30

AGND9/AGND25

VCH9

AGND8/AGND24

AGND

ICH26*

51

22

56

21

55

54

20

VCH10

52

53

19

ICH25*

AGND

18

AGND10/AGND26

ICH29*

13

50

17 VCH11

AGND11/AGND27

49

16

AGND12/AGND28

ICH27*

15

48 ICH28*

VCH12

14

47 VCH13

AGND13AGND29

VCH14

12

46

PIN # SIGNAL

NATIONAL

INSTRUMENTS

*NO CONNECT ON THE NI 6703

Contents

Main Page Important Information Warranty Copyright Trademarks Patents Compliance FFCC/Canada Radio Frequency Interference Compliance Determining FCC Class FCC/DOC Warnings Class A Compliance to EU Directives Contents Chapter 4 Using Thermocouples Chapter 5 Adding Components for Special Functions Page About This Manual Conventions Page Introduction What You Need to Get Started Quick Reference Label Page Table 1-1. Device-Specific Hardware Configuration (Continued) Installing Cables Using 68-Pin Cables Using 100-Pin Cables Page Figure 1-4. SCB-68 E Series I/O Connector Pinout (Full) Figure 1-5. SCB-68 E Series I/O Connector Pinout (Extended AI) Figure 1-6. SCB-68 E Series I/O Connector Pinout (Extended Digital) Configuring the SCB-68 Safety Information Page Page Parts Locator and Wiring Guide Figure 2-1. SCB-68 Printed Circuit Diagram SCB-68 Switch Configuration Page Page Connecting Signals Connecting Analog Input Signals Input Modes Figure 3-1. Summary of AI Connections Using Bias Resistors Nonreferenced or Floating Signal Sources Ground-Referenced Signal Sources Differential Connection Considerations (DIFF Input Mode) Differential Connections for Ground-Referenced Signal Sources i Figure 3-2. Differential Input Connections for Ground-Referenced Signals Differential Connections for Nonreferenced or Floating Signal Sources Using Bias Resistors Single-Ended Connection Considerations Single-Ended Connections for Floating Signal Sources (RSE Input Mode) Single-Ended Connections for Grounded Signal Sources (NRSE Input Mode) Connecting Analog Output Signals Connecting Digital Signals Connecting Timing Signals Noise Considerations Page Using Thermocouples Switch Settings and Temperature Sensor Configuration Special Considerations Adding Components for Special Functions Channel Pad Configurations Conditioning Analog Input Channels Conditioning Analog Output Channels Figure 5-3. Analog Output Channel Configuration Diagram for DAC0OUT Conditioning PFI0/TRIG1 Figure 5-5. Digital Input Channel Configuration Diagram for PFI0/TRIG1 Figure 5-4. Digital Input Channel Configuration Diagram Accuracy and Resolution Considerations Open Thermocouple Detection Differential Open Thermocouple Detection Single-Ended Open Thermocouple Detection Sources of Error Lowpass Filtering Page Page One-Pole Lowpass RC Filter Selecting Components Single-Ended Lowpass Filter Differential Lowpass Filter Analog Output and Digital Input Lowpass Filtering Lowpass Filtering Applications Noise Filtering Antialiasing Filtering Special Consideration for Analog Input Channels Special Consideration for Analog Output Signals Special Consideration for Digital Trigger Input Signals Measuring a 4 to 20 mA Current Selecting a Resistor Attenuating Voltage Page Selecting Components Accuracy Considerations Single-Ended Input Attenuators Differential Input Attenuators Analog Output and Digital Input Attenuators Special Considerations for Analog Input Special Considerations for Analog Output Special Considerations for Digital Inputs A Specifications Analog Input Power Requirement Fuse Physical Maximum Working Voltage Environmental Safety Electromagnetic Compatibility CE Compliance Page Figure B-1. ESeries Device s SCB-68 Shielded Connector Block User Manual B-2 ni.com E SERIES DEVICES NI 670 Figure B-2. NI670X Devices National Instruments Corporation B-3 SCB-68 Shielded Connector Block User Manual DEVICES NI 671 /673 Figure B-3. NI671X/673X Devices SCB-68 Shielded Connector Block User Manual B-4 ni.com Figure B-4. S Series Devices S SERIES DEVICES NI 660 Figure B-5. NI660X Devices X S5 X NI 653 Figure B-6. NI653X Devices National Instruments Corporation B-7 SCB-68 Shielded Connector Block User Manual DEVICES Figure B-7. NI7811R/7831R Devices NI 7811R/7831R DEVICES C Fuse and Power D SCB-68 Circuit Diagrams Figure D-1. +5 V Power Supply This appendix contains illustrations of circuit diagrams for the SCB-68. Figure D-2. Cold-Junction Compensation Circuitry Figure D-3. Digital Trigger Circuitry Figure D-4. Analog Output Circuitry E Soldering and Desoldering on the SCB-68 Page F Technical Support and Professional Services Page Glossary Numbers/Symbols A C D Page I L M N O P R S T U V W Index Numbers A B C Page D E F G I L M N O P Q R S T V