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777687-03

更新时间: 2022-12-19 10:13:19
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美国国家仪器公司 - NI /
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9页 728K
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SCXI Terminal Blocks

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SCXI Terminal Blocks  
SCXI Terminal Blocks  
• Terminal blocks for quick,  
easy connections  
• Onboard temperature sensor  
for cold-junction compensation  
• Strain-relief clamps  
for reliable wiring  
• Isothermal construction  
for high-accuracy  
thermocouple measurements  
• High-voltage attenuation  
• AC/DC coupling  
• Bridge offset nulling,  
shunt calibration  
• Current inputs  
• Connectivity options including BNC and  
thermocouple plugs  
• Shielded front-mount  
terminal blocks  
• Rack and DIN-rail mount options  
available  
• Terminal block options for specific  
measurement types  
Some terminal blocks are designed for specific input types, such as  
thermocouples, strain gages, and high-voltage inputs. See tables 2, 3,  
and 4 to determine which SCXI terminal blocks are compatible with your  
SCXI module.  
Overview  
National Instruments SCXI terminal blocks provide a convenient  
method for connecting and disconnecting signals to your system. The  
NI SCXI-13xx front-mount terminal blocks feature direct connections  
to transducers at the screw terminals located within a fully shielded  
enclosure or at front-mounted BNC connectors. Strain-relief clamps hold  
the signal wires safely in place. You can also choose either the TC-2095  
or BNC-2095 rack-mount terminal blocks for minithermocouple  
connectors or BNC connectors. These terminal blocks are ideal  
solutions for high-channel-count temperature or voltage applications.  
TBX DIN-rail mount terminal blocks are an alternative to the SCXI-13xx  
terminal blocks which attach directly to the front of an SCXI module. The  
TBX system includes shielded cables that connect the front I/O connector  
of an SCXI module to a TBX terminal block.  
Figure 1. Terminal Block Configuration  
Terminal Block  
TBX-1303  
TBX-1316  
Compatible SCXI Modules  
SCXI-1100, SCXI-1102, SCXI-1102B/C, SCXI-1181  
SCXI-1120/D, SCXI-1125, SCXI-1126  
Cabling  
SH96-96 or R96-96  
SH32-32-A  
CJC  
Special Features  
Open TC detection isothermal construction, selectable ground referencing  
200:1 attenuation (up to 1,000 VDC)  
High-voltage 250 VDC  
TBX-1325  
SCXI-1124  
SH48-48-A  
TBX-1326  
TBX-1328  
SCXI-1162, SCXI-1162HV, SCXI-1163, SCXI-1163R  
SCXI-1120, SCXI-1120D, SCXI-1121, SCXI-1125, SCXI-1126  
SH48-48-B  
SH32-32-A  
High-voltage 250 VDC  
Sockets for current input resistors, isothermal construction,  
high-voltage 250 VDC  
TBX-1329  
TBX-96  
SCXI-1120, SCXI-1120D, SCXI-1121, SCXI-1125, SCXI-1126  
SCXI-1100, SCXI-1102, SCXI-1102B/C  
SH32-32-A  
SH96-96 or R96-96  
SCXI-1104, SCXI-1181, SCXI-1104C  
User-supplied wiring  
NB1  
Selectable AC coupling (rejects up to 250 VDC)  
TBX-24F1  
CB-50  
All modules  
SCXI-1180  
1 The TBX-24F is a general-purpose feedthrough terminal block that you can use with any SCXI module or front mounting terminal blocks.  
Table 1. TBX Terminal Block Selection Guide  

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