National Instruments LFH200 Bedienungsanleitung

INSTALLATION INSTRUCTIONS

LFH200 Cable

This guide describes how to use the National Instruments LFH200 cable to connect the

NI PXI-2569/2570/2571/2575 or SCXI-1169/1175 switch module to your system.

The LFH200 cable is available in three configurations:

• SH200LFH-4xDB50F-C—Recommended for use with the PXI-2569/2570/2571 or

SCXI-1169.

• SH200LFH-4xDB50F-S—Recommended for use with the PXI-2575 or SCXI-1175.

• SH200LFH-BARE WIRE—Recommended for termination other than 50-pin female

D-SUB.

Caution The LFH200 cable has a maximum voltage rating of 60 VDC. When using

the LFH200 cable with switch modules, do not exceed 60 VDC.

Contents

Conventions .............................................................................................................................. 2

Getting Started .......................................................................................................................... 2

Connecting the LFH200 Cable ................................................................................................. 2

Connectors ........................................................................................................................ 4

Cable Configurations ................................................................................................................ 5

SH200LFH-4xDB50F-C Cable ........................................................................................ 5

SH200LFH-4xDB50F-S Cable......................................................................................... 15

SH200LFH-BARE WIRE Cable ...................................................................................... 24

Accessories ............................................................................................................................... 33

Specifications............................................................................................................................ 34

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LFH200 Cable Installation Instructions 2ni.com

Conventions

The following conventions are used in this guide:

»The »symbol leads you through nested menu items and dialog box

options to a final action. The sequence Options»Settings»General

directs you to pull down the Options menu, select the Settings item,

and select General from the last dialog box.

This icon denotes a note, which alerts you to important information.

This icon denotes a caution, which advises you of precautions to take

to avoid injury, data loss, or a system crash.

bold Bold text denotes items that you must select or click in the software,

such as menu items and dialog box options. Bold text also denotes

parameter names.

italic Italic text denotes variables, emphasis, a cross-reference, or an

introduction to a key concept. Italic text also denotes text that is a

placeholder for a word or value that you must supply.

monospace Text in this font denotes text or characters that you should enter from

the keyboard, sections of code, programming examples, and syntax

examples. This font is also used for the proper names of disk drives,

paths, directories, programs, subprograms, subroutines, device names,

functions, operations, variables, filenames, and extensions.

Getting Started

The following items are necessary for connecting the LFH200 cable:

❑LFH200 cable

❑NI PXI-2569/2570/2571/2575 or SCXI-1169/1175 switch module and documentation

Connecting the LFH200 Cable

Complete the following steps to connect the LFH200 cable to your switch module and

application. Refer to Figures 1 and 2 for illustrations of the LFH200 cable.

1. Connect the LFH200 connector to the connector on the switch module.

2. Tighten the thumbscrews.

3. Complete either of the following steps, and refer to Tables 1 through 16 to determine how

to connect your signals.

• Connect the D-SUB connectors to your application.

• Connect the unterminated wires to your application.

©National Instruments Corporation 3 LFH200 Cable Installation Instructions

Figure 1. SH200LFH-4xDB50F-C or SH200LFH-4xDB50F-S Cable

Figure 2. SH200LFH-BARE WIRE Cable

1 LFH200 Connector

2 Thumbscrews

3 Cable Leg Label

4 50-Pin Female D-SUB Connectors

1 LFH200 Connector

2 Thumbscrews

3 Cable Leg Label

4 25 Unterminated, Tinned, and Stripped Wires

1 2 4

LFH200 Cable Installation Instructions 4ni.com

Connectors

The cable in this kit connects an LFH200 connector to four, 50-pin female D-SUB connectors

marked P1–P4, or eight bundles, leg J0–J7, of unterminated, tinned, and stripped wires. The

LFH200 connector provides connection to the switch module. The 50-pin female D-SUB

connectors and unterminated wires provide connection to your application. Figures 3 and 4

show the pinouts for these connectors.

Figure 3. LFH200 Connector

Figure 4. 50-Pin Female D-SUB Connector

Pin 100

Pin 1

Pin 50

Pin 51

Pin 101

Pin 200

Pin 150

Pin 151

Pin 1

Pin 34

Pin 17

Pin 50

Pin 18

Pin 33

©National Instruments Corporation 5 LFH200 Cable Installation Instructions

Cable Configurations

The LFH200 cable is available in three configurations:

• SH200LFH-4xDB50F-C

• SH200LFH-4xDB50F-S

• SH200LFH-BARE WIRE

The following sections describe each of the LFH200 cable configurations.

SH200LFH-4xDB50F-C Cable

The SH200LFH-4xDB50F-C cable is recommended for connecting the PXI-2569/2570/2571 or

SCXI-1169 to your system. One end of the cable terminates with an LFH200 connector which

connects to the switch module. The other end of the cable terminates with four 50-pin female

D-SUB connectors.

When using the SH200LFH-4xDB50F-C cable with the PXI-2569 or SCXI-1169, each Channel

and its corresponding Common form a twisted pair. For example, CH0 is paired with COM0,

and CH1 is paired with COM1. Figure 5 illustrates how this pairing relates to the pins on the

PXI-2569 or SCXI-1169.

Figure 5. Twisted Pair Groupings for the PXI-2569 or SCXI-1169

When using the SH200LFH-4xDB50F-C cable with the PXI-2570, each Channel and its

corresponding NO (Normally Open) connection form a twisted pair. The NC (Normally Closed)

connection is twisted with NO CONNECT wires. For example, COM0 is twisted with NO0, and

NC0 is twisted with a NO CONNECT wire. Figure 6 illustrates how this pairing relates to the

pins on the PXI-2570.

COM0

COM2

COM4

COM6

COM8

150

151

149

152

148

153

147

154

146

155

CH0

CH2

CH4

CH6

CH8

CH1

CH3

CH5

CH7

CH9

COM1

COM3

COM5

COM7

COM9

LFH200 Cable Installation Instructions 6ni.com

Figure 6. Twisted Pair Groupings for the PXI-2570

When using the SH200LFH-4xDB50F-C cable with the PXI-2571 the twisted pairs vary

depending on the channel. For the first 50 Channels, each COM and its corresponding NO

connection form a twisted pair. However, for the remaining 16 channels, the three components

(NC, COM, and NO) are each twisted with a NC component from the first 50 Channels. For

example, COM0 is twisted with NO0, and NC0 is twisted with NC50. COM1 is twisted with

NO1, and NC1 is twisted with COM50. COM2 is twisted with NO2, and NC2 is twisted with

NO50. Figure 7 illustrates how this pairing relates to the pins on the PXI-2571.

Figure 7. Twisted Pair Groupings for the PXI-2571

Refer to the NI Switches Help for a complete listing of channel names and pinouts.

The following tables list the pin assignments for the SH200LFH-4xDB50F-C cable.

NC0

NC1

NO CONNECT

NC2

NC3

NC4

150

151

149

152

148

153

147

154

146

155

COM0

COM1

COM2

COM3

COM4

NO0

NO1

NO2

NO3

NO4

NO CONNECT

NC0

NC1

NC2

NC3

NC4

150

151

149

152

148

153

147

154

146

155

NC50

COM50

NO50

NC51

COM51

COM0

COM1

COM2

COM3

COM4

NO0

NO1

NO2

NO3

NO4

©National Instruments Corporation 7 LFH200 Cable Installation Instructions

Table 1. Pin Assignment for SH200LFH-4xDB50F-C P1

50-Pin D-SUB P1

Cable PXI-2569,

SCXI-1169

Channel

PXI-2570

Channel

PXI-2571

Channel

LFH Pin

50-Pin D-SUB

26 50 COM49 NO24 NO24

27 48 COM47 NO23 NO23

28 46 COM45 NO22 NO22

29 44 COM43 NO21 NO21

30 42 COM41 NO20 NO20

31 40 COM39 NO19 NO19

32 38 COM37 NO18 NO18

33 36 COM35 NO17 NO17

34 34 COM33 NO16 NO16

35 19 COM31 NO15 NO15

36 21 COM29 NO14 NO14

37 23 COM27 NO13 NO13

38 25 COM25 NO12 NO12

39 27 COM23 NO11 NO11

40 29 COM21 NO10 NO10

41 31 COM19 NO9 NO9

42 33 COM17 NO8 NO8

43 16 COM15 NO7 NO7

44 14 COM13 NO6 NO6

45 12 COM11 NO5 NO5

46 10 COM9 NO4 NO4

47 8COM7 NO3 NO3

48 6COM5 NO2 NO2

49 4COM3 NO1 NO1

50 2COM1 NO0 NO0

LFH200 Cable Installation Instructions 8ni.com

51 1CH1 COM0 COM0

52 3CH3 COM1 COM1

53 5CH5 COM2 COM2

54 7CH7 COM3 COM3

55 9CH9 COM4 COM4

56 11 CH11 COM5 COM5

57 13 CH13 COM6 COM6

58 15 CH15 COM7 COM7

59 17 CH17 COM8 COM8

60 32 CH19 COM9 COM9

61 30 CH21 COM10 COM10

62 28 CH23 COM11 COM11

63 26 CH25 COM12 COM12

64 24 CH27 COM13 COM13

65 22 CH29 COM14 COM14

66 20 CH31 COM15 COM15

67 18 CH33 COM16 COM16

68 35 CH35 COM17 COM17

69 37 CH37 COM18 COM18

70 39 CH39 COM19 COM19

71 41 CH41 COM20 COM20

72 43 CH43 COM21 COM21

73 45 CH45 COM22 COM22

74 47 CH47 COM23 COM23

75 49 CH49 COM24 COM24

Table 1. Pin Assignment for SH200LFH-4xDB50F-C P1 (Continued)

50-Pin D-SUB P1

Cable PXI-2569,

SCXI-1169

Channel

PXI-2570

Channel

PXI-2571

Channel

LFH Pin

50-Pin D-SUB

©National Instruments Corporation 9 LFH200 Cable Installation Instructions

Table 2. Pin Assignment for SH200LFH-4xDB50F-C P2

50-Pin D-SUB P2

Cable PXI-2569,

SCXI-1169

Channel

PXI-2570

Channel

PXI-2571

Channel

LFH Pin

50-Pin D-SUB

126 50 COM48 NC24 NC24

127 48 COM46 NC23 NC23

128 46 COM44 NC22 NC22

129 44 COM42 NC21 NC21

130 42 COM40 NC20 NC20

131 40 COM38 NC19 NC19

132 38 COM36 NC18 NC18

133 36 COM34 NC17 NC17

134 34 COM32 NC16 NC16

135 19 COM30 NC15 NC15

136 21 COM28 NC14 NC14

137 23 COM26 NC13 NC13

138 25 COM24 NC12 NC12

139 27 COM22 NC11 NC11

140 29 COM20 NC10 NC10

141 31 COM18 NC9 NC9

142 33 COM16 NC8 NC8

143 16 COM14 NC7 NC7

144 14 COM12 NC6 NC6

145 12 COM10 NC5 NC5

146 10 COM8 NC4 NC4

147 8COM6 NC3 NC3

148 6COM4 NC2 NC2

149 4COM2 NC1 NC1

150 2COM0 NC0 NC0

151 1CH0 —NC50

LFH200 Cable Installation Instructions 10 ni.com

152 3CH2 —COM50

153 5CH4 —NO50

154 7CH6 —NC51

155 9CH8 —COM51

156 11 CH10 —NO51

157 13 CH12 —NC52

158 15 CH14 —COM52

159 17 CH16 —NO52

160 32 CH18 —NC53

161 30 CH20 —COM53

162 28 CH22 —NO53

163 26 CH24 —NC54

164 24 CH26 —COM54

165 22 CH28 —NO54

166 20 CH30 —NC55

167 18 CH32 —COM55

168 35 CH34 —NO55

169 37 CH36 —NC56

170 39 CH38 —COM56

171 41 CH40 —NO56

172 43 CH42 —NC57

173 45 CH44 —COM57

174 47 CH46 —NO57

175 49 CH48 —NC58

Table 2. Pin Assignment for SH200LFH-4xDB50F-C P2 (Continued)

50-Pin D-SUB P2

Cable PXI-2569,

SCXI-1169

Channel

PXI-2570

Channel

PXI-2571

Channel

LFH Pin

50-Pin D-SUB

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