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National Instruments Corporation

5

SCXI-1327 Installation Guide

Note

For correct operation with the SCXI-1121 module, you must bypass the attenuators

on the excitation channels.

Connecting Signals

Caution

Refer to the

Safety Information

section before removing equipment covers

or connecting or disconnecting any signal wires.

To connect the signal to the terminal block, perform the following steps,
referring to Figures 1 and 2 as necessary:

1.

Unscrew the top cover screws and remove the top cover.

2.

Loosen the strain-relief screws and remove the strain-relief bar.

3.

Prepare your signal wire by stripping the insulation no more than
7 mm.

Table 1.

SCXI-1327 High-Voltage Attenuator Configuration

Switch Position

Description

Enables the attenuator for a specific channel.
This is the default setting.

Bypasses the attenuator for a specific channel.

100:1

1:1

100:1

1:1

Summary of Contents for SCXI-1327

Page 1: ...XI 1327 channel has a precision 100 1 resistive voltage divider that you can use to measure voltages of up to 300 Vrms or 300 VDC with the SCXI 1120 SCXI 1120D SCXI 1121 SCXI 1125 or SCXI 1126 You can...

Page 2: ...ic text denotes variables emphasis a cross reference or an introduction to a key concept This font also denotes text that is a placeholder for a word or value that you must supply monospace Text in th...

Page 3: ...n become impaired if the device becomes damaged in any way If the device is damaged turn the device off and do not use it until service trained personnel can check its safety If necessary return the d...

Page 4: ...ational Instruments is not liable for any damages or injuries resulting from inadequate safety earth ground connections Do not loosen or re orient the safety ground lug hardware when connecting the sa...

Page 5: ...nnect the signal to the terminal block perform the following steps referring to Figures 1 and 2 as necessary 1 Unscrew the top cover screws and remove the top cover 2 Loosen the strain relief screws a...

Page 6: ...ning You can add insulation or padding if necessary Note When connecting your signals to the SCXI 1327 follow the labeling on the SCXI 1327 for the appropriate module as indicated in Figure 2 1 Top Co...

Page 7: ...5 7 in lb 8 Connect the safety earth ground to the safety ground lug Refer to the Safety Information section for connection information 9 Reinstall the strain relief bar and tighten the strain relief...

Page 8: ...rushing off light dust with a soft nonmetallic brush Remove other contaminants with deionized water and a stiff nonmetallic brush The unit must be completely dry and free from contaminants before retu...

Page 9: ...r 100 1 setting Attenuation ratio temperature drift 15 ppm C Resistance between CH and CH terminals 1 1 attenuation setting Determined by attached module 100 1 attenuation setting 1 M Coupling DC only...

Page 10: ...mponents None Safety earth ground lugs 1 Strain relief Strain relief bar at terminal block entrance Mechanical Dimensions 17 8 by 7 94 by 3 0 cm 7 0 by 3 125 by 1 2 in Weight 200 g 7 oz Environmental...

Page 11: ...to 50 C Converting a Thermistor Voltage to a Temperature National Instruments software can convert a thermistor voltage to the thermistor temperature for the circuit diagram shown in Figure 3 In LabVI...

Page 12: ...to the SCXI 1327 For more information about channel string arrays and the SCXI channel addressing syntax see the LabVIEW Measurements Manual Note This section is not applicable to the SCXI 1126 With...

Page 13: ...ead this section to operate the SCXI 1327 The circuit diagram in Figure 3 is optional information that you can use if you want more details about the SCXI 1327 temperature sensor Figure 3 Temperature...

Page 14: ...e searched the technical support resources on our Web site and still cannot find the answers you need contact your local office or National Instruments corporate For telephone support in the United St...

Page 15: ......

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