National Instruments SH6850 Bedienungsanleitung

_____________________________

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NATIONAL

INSTRUMENTS®

The Software is the Instrument

Installation Guide

SH6850 Shielded Cable

This guide describes how to use the SH6850 shielded cable to connect either a 68-pin MIO

Series board to a 50-pin MIO accessory or a 50-pin MIO Series board to a 68-pin MIO

accessory. In this guide, the AT-MIO-16, AT-MIO-16F-5, AT-MIO-16X, NB-MIO-16, and

NB-MIO-16X are referred to collectively as the MIO-16 Series boards. The newer MIO-16E

Series boards include the AT-MIO-16E-2 and the AT-MIO-16XE-50.

Introduction

The SH6850 shielded cable is a 1, 2, 5, or 10 m round cable, which has a 68-pin female

connector at one end and a 50-pin female connector at the other end. The SH6850 shielded cable

kit also includes a 3 in. ribbon cable and replacement brackets for the 50-pin AT-MIO Series

(AT-MIO-16, AT-MIO-16F-5, and AT-MIO-16X) and NB-MIO Series (NB-MIO-16 and

NB-MIO-16X) boards. The SH6850 shielded cable brings the pinout of your MIO Series board

I/O connector, which has either 68 or 50 pins, to the MIO accessory I/O connector, which has

either 50 or 68 pins.

What You Need to Get Started

SH6850 shielded cable in one of four cable lengths: 1, 2, 5, or 10 m

SH6850 Shielded Cable Installation Guide

Either a 68-pin MIO board and a 50-pin MIO accessory

A 50-pin MIO board and a 68-pin MIO accessory

Small Phillips-head screwdriver

In addition, you need the following components to connect a 68-pin MIO board to a 50-pin

accessory:

3 in. 50-to-50-pin ribbon cable

In addition, you need the following components to connect a 50-pin MIO board to a 68-pin

accessory:

Either a replacement bracket for 50-pin AT-MIO Series boards

A replacement bracket for 50-pin NB-MIO Series boards

You can use the brackets to modify your 50-pin MIO board so that you can connect it to a 68-pin

MIO accessory via the SH6850 cable.

Installation

Connecting a 68-Pin Board to a 50-Pin Accessory

Figure 1 illustrates how to connect the SH6850 shielded cable and the 3 in. ribbon cable to a 68-

pin MIO board and a 50-pin MIO accessory.

68-Pin MIO Board 3 in. Ribbon Cable 50-Pin Accessory

Step 2 Step 4

Step 3

Step 5

SH6850

Shielded Cable

Figure 1. 68-Pin MIO Board Connection

To install the SH6850 cable to a 68-pin MIO board and a 50-pin MIO accessory:

1. Install your MIO board in a slot in your computer, following the instructions in your MIO

board user manual.

2. Connect the 68-pin connector of the SH6850 shielded cable to the 68-pin I/O connector of

your MIO board.

3. Connect the 50-pin female connector (the end with the grounding strap) of the SH6850

shielded cable to the 50-pin male connector of the 3 in. ribbon cable.

4. Connect the female connector of the 3 in. ribbon cable to your accessory.

5. Fasten the shield ground strap to the SH6850 shielded cable so that the strap is not dangling.

Connecting a 50-Pin Board to a 68-Pin Accessory

Bracket Replacement

Before you install the SH6850 to a 50-pin MIO board and a 68-pin MIO accessory, you must

replace the bracket of your MIO board with the appropriate bracket from the SH6850 kit, unless

your MIO board already has a bracket with a grounding strap tab. If your MIO board has a

bracket with a grounding strap tab, skip the next page and go to the SH6850 Connection section.

1. Turn off the power to your computer.

2. Remove your MIO board from your computer.

3. Unscrew and remove the two screws that attach the bracket to the MIO board.

4. Remove the bracket from the board. See Figure 2 for NB-MIO board bracket removal or

Figure 3 for AT-MIO board bracket removal.

Bracket

NB-MIO Board

Figure 2. Removing the Bracket from an NB-MIO Board

AT-MIO

Board

Bracket

Figure 3. Removing the Bracket from an AT-MIO Board

5. The 50-pin I/O connector on your MIO board may have small plastic key inserts installed for

mating with military polarized connectors. Because these keys are incompatible with the

50-pin connector on the SH6850 shielded cable, you must remove them. The 50-pin SH6850

connector has a center polarization bump that prevents you from inserting the connector

upside down.

To remove the key inserts, use a thin probe such as a pencil or a pen tip to gently press down

on the release tab in the center of the key insert (see Figure 4). Then use the probe to lift up

the back end of the key insert and slide the insert off the connector.

MIO Board

Figure 4. Removing the Key Inserts

6. Identify the appropriate replacement bracket for your MIO board from your SH6850 kit. The

bracket that you use should look like the one you remove, except that the new one has an

extra tab that mates with the grounding strap on the SH6850 cable assembly.

7. Install the new bracket by aligning the bracket with the holes in your MIO board and screw

in the two mounting screws.

Now you are ready to connect the SH6850 shielded cable to a 50-pin MIO board and a 68-pin

accessory.

SH6850 Connection

Figure 5 illustrates how to connect the SH6850 shielded cable to a 50-pin MIO board and a 68-

pin MIO accessory.

SH6850

Shielded Cable

Grounding Strap

50-Pin MIO Board 68-Pin Accessory

Figure 5. 50-Pin MIO Board Connection

1. Install your MIO board in a slot in your computer, following the instructions in your MIO

board user manual.

2. Connect the 50-pin female connector (the end with the grounding strap) of the SH6850

shielded cable to the 50-pin male I/O connector of the MIO board, as shown in Figure 5.

3. Slide the end lug of the ground strap onto the tab of the MIO board bracket as shown in

Figure 5.

4. Connect the 68-pin connector of the SH6850 shielded cable to your 68-pin MIO accessory.

The 3 in. 50-to-50-pin ribbon cable is not needed when connecting a 50-pin MIO board to a 68-

pin MIO accessory.

SH6850 Pin Designations

The following table lists the pin designations for the 50-pin and the 68-pin I/O connectors on the

SH6850 and the corresponding MIO-16 Series and MIO-16E Series signal names.

50-Pin Connector

Pin Numbers MIO-16 Series

Signal Names MIO-16E Series

Signal Names 68-Pin Connector

Pin Numbers

1, 2 AIGND AIGND 24, 27, 29, 32, 56,

59, 64, 67

3 ACH0 ACH0 68

4 ACH8 ACH8 34

5 ACH1 ACH1 33

6 ACH9 ACH9 66

7 ACH2 ACH2 65

8 ACH10 ACH10 31

9 ACH3 ACH3 30

10 ACH11 ACH11 63

11 ACH4 ACH4 28

12 ACH12 ACH12 61

13 ACH5 ACH5 60

14 ACH13 ACH13 26

15 ACH6 ACH6 25

16 ACH14 ACH14 58

17 ACH7 ACH7 57

18 ACH15 ACH15 23

19 AISENSE AISENSE 62

20 DAC0 DAC0OUT 22

21 DAC1 DAC1OUT 21

22 EXTREF EXTREF 20

23 AOGND AOGND 54, 55

24, 33 DGND DGND 4, 7, 9, 12, 13, 15, 18, 35,

36, 39, 44, 50, 53

25 ADIO0 DIO0 52

26 BDIO0 DIO4 19

27 ADIO1 DIO1 17

28 BDIO1 DIO5 51

29 ADIO2 DIO2 49

30 BDIO2 DIO6 16

31 ADIO3 DIO3 47

32 BDIO3 DIO7 48

34, 35 +5V +5V 8, 14

36 SCANCLK SCANCLK 46

37 EXTSTROBE* EXTSTROBE* 45

38 EXTTRIG*/STARTTRIG* PFI0/TRIG1 11

39 EXTGATE*/ STOPTRIG PFI1/TRIG2 10

40 EXTCONV* PFI2/CONVERT* 43

41 SOURCE1 PFI3/GPCTR1_SOURCE 42

42 GATE1 PFI4/GPCTR1_GATE 41

43 OUT1 GPCTR1_OUT 40

44 EXTTMRTRIG*/ SOURCE2 PFI5/UPDATE* 6

45 GATE2 PFI6/WFTRIG 5

46 OUT2 PFI7/STARTSCAN 38

47 SOURCE5 PFI8/GPCTR0_SOURCE 37

48 GATE5 PFI9/GPCTR0_GATE 3

49 OUT5 GPCTR0_OUT 2

50 FOUT FREQ_OUT 1

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