National Instruments SCXI-1355 Bedienungsanleitung

SCXI is a trademark of National Instruments Corporation. Product and company names are trademarks or trade names of their respective

companies.

321538A-01

SCXI-1355 SHIELDED CABLE

This guide describes how to install the SCXI-1355 shielded cable with an

adapter board between an SCXI module and a DAQDIO 6533

(DIO-32HS) Series data acquisition (DAQ) board.

Introduction

With the SCXI-1355 shielded cable, you can make a low-noise,

long-distance connection between your SCXI chassis and your

DAQDIO 6533 Series board. You can use the SCXI-1355 with the

DAQDIO 6533 Series AT-DIO-32HS and PCI-DIO-32HS boards.

The SCXI-1355 shielded cable consists of a 1, 2, or 5 m round cable that

has a 68-pin female connector at each end. When plugged into the

SCXI-1355 adapter board, the shielded cable brings the pinout of the

DIO board I/O connector to the SCXI module and to a breakout

connector you can use with other SCXI accessories, such as the

SCXI-1180 and the SCXI-1351.

What You Need to Get Started

To set up and use your SCXI-1355 cable, you need the following items:

❑ SCXI-1355 kit

Cable adapter board

1, 2, or 5 m SH68-68-D1 cable

Two small screws

Two cable tie wraps

SCXI-1355 Shielded Cable Installation Guide

❑ SCXI chassis

❑ SCXI module

❑ DAQDIO 6533 Series AT-DIO-32HS or PCI-DIO-32HS board with

a 68-pin SCSI type II connector

❑ Small Phillips-head screwdriver

❑ Small flathead screwdriver

❑ Your computer

Installation

Figure 1 shows the components of your SCXI system and how to connect

them.

SCXI Module

Adapter

Board

Step 4 Step 5

Step 6

Shielded Cable

Step 7

DAQDIO 6533

Board

Figure 1.

SCXI System Components

Perform the following steps to install the SCXI-1355 cable:

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

2. Install your SCXI modules in the SCXI chassis, following the

instructions in your SCXI module user manuals.

3. Set the adapter board switch for parallel mode (P) or serial mode (S).

See Figure 2, which also shows the circuit on the DIOA(0) line, for

each switch setting.

Use the adapter board, the SCXI module, and DAQDIO 6533 Series

board in parallel mode when you want each DIO line to be directly

conditioned by an SCXI module channel to which you cable.

Use the system in serial mode when you want to use the

DAQDIO 6533 Series board as a communication device to control

one or more SCXI modules in the chassis. Check your SCXI module

user manual to make sure that your module supports the mode you

want to use and that you have properly configured the necessary

jumpers on your SCXI module.

+5 V +5 V

100 kΩ100 kΩDIOA(0)

of Module

Connector

DIOA(0)

of Module

Connector

DIOA(0)

of Breakout and

DAQDIO 6533

Connector

DIOA(0)

of Breakout and

DAQDIO 6533

Connector

SW1

a. Parallel Mode Setting

(Factory Default) b. Serial Mode Setting

Figure 2.

SCXI-1355 Adapter Board Switch SW1 Settings

4. Plug the socket connector of the SCXI-1355 adapter board into the

rear signal connector of an SCXI module.

5. Secure the SCXI-1355 adapter board by screwing the two small

screws through the rear panel of the adapter board and into the

threaded strips in the back of the SCXI chassis.

6. Connect one end of the SCXI-1355 cable to the 68-pin connector of

the SCXI-1355 adapter board.

7. Connect the other end of the cable to the I/O connector of the

DAQDIO 6533 Series board.

8. Secure the cable to a fixed object with the tie wraps to relieve the

strain on the cable. Strain relief is necessary because the SCXI-1355

shielded cable has a long, stiff backshell that can exert leverage on

the DAQDIO 6533 Series board connector.

Figure 3 shows the completed installation.

Computer

SCXI-1355

Shielded Cable

SCXI

Chassis

Figure 3.

Completed SCXI-1355 Shielded Cable Installation

Pin Assignments

Table 1 lists the pin assignments for the adapter board connectors.

Table 1.

Pin Assignments

DAQDIO 6533

Signal Name DAQDIO 6533

Pin Breakout

Connector Pin1

SCXI Module

Connector Pin2

GND 11, 14, 18, 20, 24, 27, 30, 33,

36, 37, 39, 41, 42, 46, 49, 50,

55, 59, 62, 65, 68

17, 19, 21, 23, 25, 26, 28, 30,

32, 34 50

RGND319, 35, 43, 56 17, 19, 21, 23, 25, 26, 28, 30,

32, 34 50

+5 V 1 Not connected 49

DIOA(0)410 37 47

DIOA(1) 44 39 45

DIOA(2) 45 38 43

DIOA(3) 12 40 41

DIOA(4) 13 35 39

DIOA(5) 47 42 37

DIOA(6) 48 36 35

DIOA(7) 15 41 33

DIOB(0) 16 47 31

DIOB(1) 17 50 29

DIOB(2) 51 44 27

DIOB(3) 52 48 25

DIOB(4) 53 49 23

DIOB(5) 54 43 21

DIOB(6) 21 46 19

DIOB(7) 22 45 17

DIOC(0) 23 14 15

DIOC(1) 57 12 13

DIOC(2) 58 13 11

DIOC(3) 25 11 9

DIOC(4) 26 16 7

DIOC(5) 60 9 5

Table 1.

Pin Assignments (Continued)

DAQDIO 6533

Signal Name DAQDIO 6533

Pin Breakout

Connector Pin1

SCXI Module

Connector Pin2

DIOC(6) 61 15 3

DIOC(7) 28 10 1

DIOD(0) 29 4 48

DIOD(1) 63 1 46

DIOD(2) 64 7 44

DIOD(3) 31 3 42

DIOD(4) 32 2 40

DIOD(5) 66 8 38

DIOD(6) 67 5 36

DIOD(7) 34 6 34

REQ1 2 33 24

ACK1 3 27 18

STOPTRIG1 4 29 20

PCLK1 5 31 22

REQ2 9 24 32

ACK2 8 18 26

STOPTRIG2 7 20 28

PCLK2 6 22 30

CPULL 40 Not connected 14

DPULL538 Not connected 16

Notes:

1. This is the same pinout as DIO-32F boards from National Instruments.

2. Pins 2, 4, 6, 8, 10, and 12 on the SCXI module connector are not connected.

3. RGND pins are connected to GND pins on the DAQDIO 6533 and on the adapter board. However, the shielded cable

does not connect these four pins from the DAQDIO 6533 to the adapter.

4. DIOA(0) on the SCXI module connector is tied to +5 V with a 100 kΩresistor on the adapter board. This pin

connects directly to DIOA(0) of the breakout and DAQDIO 6533 connectors when you set SW1 for parallel mode.

When you set SW1 for serial mode, the adapter board inserts a buffer to redrive the module connector pin to the

breakout connector and DAQDIO 6533 connector.

5. DPULL is tied to +5 V with a 470 Ωresistor on the adapter board.

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