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Figure 2. SCB-68 Printed Circuit Board Diagram

1

2

4

3

5

6

3

6

SCB-68

©

COPYRIGHT 1993

68

J1

34

12

46

13

47
14

48
15

49
16

50
17

51
18

52
19

53
20

54
21

55
22

56

1

35

2

36

3

37

4

38

5

39

6

7

41

8

42

9

43
10

44
11

45

67

33
66

32
65

31

64

30

63

29
62

28
61

27

60

26
59

25
58

24
57

23

C6

C5

C3

C1

C2

XF1

ASSY182470-01

 REV.B

S/N

1

3

33

34

C4

R20

R21

RC12(B)

RC4(E)

R4(F)

S5

S1

S2

S4 S3

R5(G)

RC5(E)

R6(F)

R7(G)

RC13(D)

R22(A)

R23(C)

RC14(B)

RC15(D)

R24(A)

R25(C)

RC6(E)

R8(F)

R9(G)

RC16(B)

RC17(D)

R26(A)

R27(C)

RC7(E)

R10(F)

R11(G)

RC18(B)

RC19(D)

R28(A)

R29(C)

RC8(E)

R12(F)

R13(G)

RC20(B)

RC21(D)

R30(A)

R31(C)

RC9(E)

R14(F)

R15(G)

RC22(B)

RC23(D)

R32(A)

R33(C)

RC10(E)

R16(F)

R17(G)

RC24(B)

RC25(D)

R34(A)

R35(C)

RC11(E)

R18(F)

RC2
R2

RC3

R3

R19(G)

RC26(B)

RC27(D)

R36(A)

R37(C)

R38

R10

RC1

7

7

6

7

40

8

1. Switches S3, S4, and S5
2. 68-Pin I/O Connector
3. Breadboard Area
4. Fuse (800 mA, 250 V, 5 × 20 mm)
5. Switches S1 and S2
6. Screw Terminals
7. Signal Conditioning Areas
8. Temperature Sensor

To get started with the SCB-68, complete the following steps while referring to

Figures 1 and 2. If you have not already installed your DAQ device, refer to the DAQ

Getting Started Guide for instructions.

1. Disconnect the cable from the SCB-68, remove the shielding screws with a

Phillips #1 screwdriver, and open the top cover.

© National Instruments

5

SCB-68 Getting Started

Summary of Contents for SCB-68

Page 1: ...SCB 68 Getting Started 2022 07 06...

Page 2: ...3 Getting Started with the SCB 68 4 Using the SCB 68 in Direct Feedthrough Mode 7 Using the SCB 68 with Multifunction I O Devices 7 Connecting Signal Sources to Analog Inputs 9 Fuse and Power Informat...

Page 3: ...use the SCB 68 with devices without analog input functionality you must change the default switch setting Refer to Using the SCB 68 in Direct Feedthrough Mode for more information Figure 1 SCB 68 Part...

Page 4: ...pin connectors and up to four SCB 68 accessories with supported products with four 68 pin connectors Getting Started with the SCB 68 The following cautions contain important safety information concer...

Page 5: ...RC20 B RC21 D R30 A R31 C RC9 E R14 F R15 G RC22 B RC23 D R32 A R33 C RC10 E R16 F R17 G RC24 B RC25 D R34 A R35 C RC11 E R18 F RC2 R2 RC3 R3 R19 G RC26 B RC27 D R36 A R37 C R38 R10 RC1 7 7 6 7 40 8 1...

Page 6: ...f 0 5 0 6 N m 4 43 5 31 lb in 6 Reinstall the strain relief if removed and tighten the strain relief screws 7 Close the top cover and reinsert the shielding screws to ensure proper shielding Caution D...

Page 7: ...the SCB 68 in Direct Feedthrough Mode NI 25xx NI 4309 NI 65xx NI 66xx NI 67xx and NI 78xx and products without analog input functionality must use direct feedthrough mode Move the switches to the dire...

Page 8: ...signal conditioning area of the accessory Refer to the following figure for a detailed diagram S5 S4 S3 S1 S2 MIO with single ended temperature sensor mode Move switches S1 S2 S3 S4 and S5 to the posi...

Page 9: ...itioning Connecting Signal Sources to Analog Inputs For detailed information about connections from floating or ground referenced signal sources to analog inputs refer to your device documentation Ref...

Page 10: ...Before replacing any fuses check for short circuits from power to ground Refer to the SCB 68 User Manual for Advanced Functions for information about filtering the power on the SCB 68 Where to Go fro...

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