National Instruments SCXI-1342 PC-LPM-16 Bedienungsanleitung

NATIONAL

INSTRUMENTS

The Software is the Instrument

SCXI-1342 PC-LPM-16

Cable Assembly

Installation Guide

Part Number 320623-01

This guide describes how to install the SCXI-1342 PC-LPM-16 cable assembly between an

SCXI module and a data acquisition board. In addition to the SCXI-1342 kit contents, you will

need an SCXI chassis, an SCXI module, a computer, a data acquisition board, and a small

flathead screwdriver.

Introduction

With the SCXI-1342 PC-LPM-16 cable assembly, you can connect your PC-LPM-16 data

acquisition board to the following SCXI modules: the SCXI-1100, SCXI-1120, SCXI-1121,

SCXI-1140, SCXI-1160, SCXI-1161, SCXI-1162, and SCXI-1163. If you have a newly released

module that is not in this list, contact National Instruments for information on your cable needs.

The SCXI-1342 cable assembly consists of a 50-conductor NB1 ribbon cable and an adapter

board. Use the ribbon cable to connect the I/O connector of the PC-LPM-16 to the adapter board

rear connector, which has latches. The adapter board also has a female right-angle module

connector that plugs into the rear of the SCXI module. In addition, the adapter board has an

extra male breakout connector that provides the unmodified signals of the PC-LPM-16 for use

with other accessories. For example, you can connect this male breakout connector to an

SCXI-1180 feedthrough panel to bring the PC-LPM-16 pinout to the front of your SCXI chassis.

What Your Kit Should Contain

The contents of the SCXI-1342 PC-LPM-16 cable assembly kit (part number 776574-42) are as

follows:

Kit Component Part Number

1.0 m NB1 cable

Two small screws

Adapter board

SCXI-1342 PC-LPM-16 Cable Assembly Installation Guide

180524-10

742413-01

181760-01

320623-01

If your kit is missing any of the components, contact National Instruments.

371182A-01

SCXI-1342 Cable Assembly Installation Guide 2 © National Instruments Corporation

Installation Procedure

Figure 1 illustrates the components of your SCXI system.

SCXI 1140

SCXI Module

NB1 Ribbon Cable

Extra Male

Breakout Connector

(Optional Connection)

PC-LPM-16 Board

SCXI-1342

Adapter Board

Figure 1. Connecting the SCXI-1342 to Your Data Acquisition Board and SCXI Module

Perform the following steps to install the SCXI-1342 cable:

1. Turn off the power to your computer and the SCXI chassis.

2. Install your SCXI module in the SCXI chassis, following the instructions in your module

user manual.

3. Set jumper W1 on the SCXI-1342 adapter board to the correct position for your system, as

shown in Figure 2. When set to position A, the factory-default position, jumper W1 connects

pin 46 of the PC-LPM-16 to pin 46 of the module connector. Position B breaks this

connection. Leave jumper W1 in position A unless you are using an SCXI-1140 module and

are not supplying the HOLDTRIG signal to the module from the PC-LPM-16. See your

SCXI-1140 User Manual for an explanation of the HOLDTRIG signal.

Position A

HOLDTRIG Connected

Position B

HOLDTRIG Disconnected

Figure 2. Jumper W1 Settings

4. Plug the female right-angle module connector of the SCXI-1342 adapter board into the rear

signal connector of the SCXI module.

5. Secure the SCXI-1342 adapter board by screwing the two screws through the rear panel of

the adapter board and into the threaded strips in the rear of the SCXI chassis.

6. Install your data acquisition board in a slot in your computer, following the instructions in

your data acquisition board user manual.

7. Connect one end of the NB1 cable to the rear connector of the adapter board.

8. Connect the loose end of the NB1 cable to the I/O connector on the PC-LPM-16 as shown in

the detail in Figure 3.

The finished installation should look like Figure 3.

SCXI

Chassis

SCXI-1342

Cable Assembly

Computer

NB1 Ribbon Cable

PC-LPM-16 Board

Figure 3. Installed Cable

SCXI-1342 Pin Translations

The following table lists the way that the SCXI-1342 translates pins from the PC-LPM-16 to the

SCXI module.

SCXI-1342 Cable Assembly Installation Guide 4 © National Instruments Corporation

Rear

Connector Pin

PC-LPM-16

Signal Name

Male Breakout

Connector Pin

SCXI Module

Connector Pin

1 ACH0 1 3

2 ACH1 2 5

3 ACH2 3 7

4 ACH3 4 9

5 ACH4 5 11

6 ACH5 6 13

7 ACH6 7 15

8 ACH7 8 17

9 AIGND 9 1, 2

10 DAC0 OUT 10 20

11 AOGND 11 23

12 DAC1 OUT 12 21

13 DGND 13 24, 33

14 PA0 14 Not connected

15 PA1 15 Not connected

16 PA2 16 Not connected

17 PA3 17 Not connected

18 PA4 18 Not connected

19 PA5 19 Not connected

20 PA6 20 Not connected

21 PA7 21 Not connected

22 PB0 22 Not connected

23 PB1 23 Not connected

24 PB2 24 Not connected

25 PB3 25 Not connected

26 PB4 26 25

27 PB5 27 27

28 PB6 28 29

29 PB7 29 37

30 PC0 30 Not connected

31 PC1 31 26

32 PC2 32 28

33 PC3 33 Not connected

34 PC4 34 Not connected

35 PC5 35 Not connected

36 PC6 36 Not connected

37 PC7 37 Not connected

38 EXTTRIG 38 Not connected

39 EXTUPDATE* 39 Not connected

40 EXTCONV* 40 36

41 OUTB0 41 Not connected

42 GATB0 42 Not connected

43 OUTB1 43 46

44 GATB1 44 Not connected

45 CLKB1 45 Not connected

46 OUTB2 46 Not connected

47 GATB2 47 Not connected

48 CLKB2 48 Not connected

49 +5V 49 34, 35

50 DGND 50 24, 33

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