777687-00 Datasheet, PDF (1/9 Pages) National Instruments Corporation – SCXI Terminal Blocks

SCXI Terminal Blocks
SCXI Terminal Blocks
• Terminal blocks for quick,
easy connections
• Strain-relief clamps
for reliable wiring
• 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
• Onboard temperature sensor
for cold-junction compensation
• Isothermal construction
for high-accuracy
thermocouple measurements
• High-voltage attenuation
• AC/DC coupling
• Bridge offset nulling,
shunt calibration
• Current inputs
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.
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.
Figure 1. Terminal Block Configuration
Terminal Block
Compatible SCXI Modules
Cabling
CJC
TBX-1303
SCXI-1100, SCXI-1102, SCXI-1102B/C, SCXI-1181
SH96-96 or R96-96

TBX-1316
SCXI-1120/D, SCXI-1125, SCXI-1126
SH32-32-A
–
TBX-1325
SCXI-1124
SH48-48-A
–
TBX-1326
SCXI-1162, SCXI-1162HV, SCXI-1163, SCXI-1163R
SH48-48-B
–
TBX-1328
SCXI-1120, SCXI-1120D, SCXI-1121, SCXI-1125, SCXI-1126
SH32-32-A

TBX-1329
TBX-96
TBX-24F¹
CB-50
SCXI-1120, SCXI-1120D, SCXI-1121, SCXI-1125, SCXI-1126
SH32-32-A
–
SCXI-1100, SCXI-1102, SCXI-1102B/C
SH96-96 or R96-96
–
SCXI-1104, SCXI-1181, SCXI-1104C
All modules
User-supplied wiring
–
SCXI-1180
NB1
–
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
Special Features
Open TC detection isothermal construction, selectable ground referencing
200:1 attenuation (up to 1,000 VDC)
High-voltage 250 VDC
High-voltage 250 VDC
Sockets for current input resistors, isothermal construction,
high-voltage 250 VDC
Selectable AC coupling (rejects up to 250 VDC)
–
–
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