background image

_____________________________

Product and company names are trademarks or trade names of their respective companies.

321033A-01

© 1996 National Instruments Corporation. All rights reserved.

March 1996

 

  

 NATIONAL 

INSTRUMENTS

®

The Software is the Instrument

®

Installation Guide

                                                                                                         

TBX-1325 High-Voltage Terminal Block

This guide describes how to install and use the TBX-1325 high-voltage terminal block with the
SCXI-1124 module.

Introduction

The TBX-1325 high-voltage terminal block is a DIN rail-mountable terminal block with 30
screw terminals for easy connection to the SCXI-1124 front connector. Six of the screw
terminals connect to the SCXI chassis ground via the SH48-48-A cable. The remaining 24 screw
terminals are for signal connection to the six module output channels. The TBX-1325 mounts on
most European standard DIN EN mounting rails.

What You Need to Get Started

TBX-1325 high-voltage terminal block kit

TBX-1325 high-voltage terminal block
TBX-1325 High-Voltage Terminal Block Installation Guide

1

/

8

 in. flathead screwdriver

SCXI chassis

SCXI-1124 module and documentation

SH48-48-A cable assembly

Long-nose pliers

3/16

 in. wrench

No. 1 Phillips-head screwdriver

Summary of Contents for TBX-1325

Page 1: ...ail mountable terminal block with 30 screw terminals for easy connection to the SCXI 1124 front connector Six of the screw terminals connect to the SCXI chassis ground via the SH48 48 A cable The rema...

Page 2: ...quisition device or disconnect the device from your SCXI chassis 3 Slide the SCXI module out of the SCXI chassis 4 Unscrew the SCXI module grounding screw with a No 1 Phillips head screwdriver and rem...

Page 3: ...3 1 2 3 4 1 Grounding Screw 3 Lock Washers 2 Nuts 4 Jack Screws Figure 2 Preparing the SCXI Module for the Cable Assembly 10 Slide the SCXI module back into place in the SCXI chassis...

Page 4: ...nd install them in the position shown 12 Connect one end of the cable assembly to your SCXI module front connector and secure the SH48 48 A cable by tightening both backshell mounting screws 1 2 3 1 B...

Page 5: ...tion 1 1 5 3 3 2 4 1 Backshell Mounting Screws and Ears 3 Captive Cover Screws 5 Signal Wire Entry 2 Shield Grounding Solder Lugs 4 Terminal Block Connector Note The SH48 48 A cable is not shown in th...

Page 6: ...emove or work with any installed terminal block disconnect the AC power line or any high voltage sources 30 Vrms and 42 4 V peak or 60 VDC that may be connected to the terminal block National Instrume...

Page 7: ...losses of the cable The SH48 48 A cable has a resistance of 0 21 m To determine the amount of error introduced by the cable do the following 1 Calculate the total resistance RTL of the cable based on...

Page 8: ...rd has corresponding rows labeled A and B to help you make the correct connections as shown in Figure 6 item 2 Note that the CHASSIS GROUND terminals are connected to the SCXI chassis via the cable sh...

Page 9: ...r 8 Assembly Number 3 Product Name 6 Signal Wire Screw Terminals 9 Chassis Ground Screw Terminal Figure 6 TBX 1325 Parts Locator Diagram Specifications Common mode isolation 250 Vrms between channels...

Reviews: