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777264-01 Datasheet(PDF) 2 Page - National Instruments Corporation |
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777264-01 Datasheet(HTML) 2 Page - National Instruments Corporation |
2 / 9 page TBX Terminal Block Selection Guide Use the following steps to select the correct combination of TBX terminal blocks and cables for your SCXI system: 1. Select the required terminal blocks – For each SCXI module, use table 1 to select the proper TBX terminal block. If a TBX-13xx terminal block is not available for your SCXI module, select the appropriate number of general-purpose TBX-24F feedthrough terminal blocks. 2. Select cabling – For each TBX terminal block, table 1 lists the cable needed to connect the TBX terminal block to the SCXI module. Shielded cables are available in lengths of 1, 2, and 5 m. If using the TBX-1303, you also have the option to build a custom cable using the SBS-96F backshell kit. For each TBX-1303 for which you will build a custom cable, select two SBS-96F kits. If using the TBX-24F, you will use discrete wires to connect the TBX-24F to an SCXI front-mounting terminal block. Therefore, select the appropriate SCXI front- mounting terminal block for each SCXI module that will use the TBX-24F. 3. Rack-mount accessory (optional) – If mounting for 19 in. rack enclosures is needed, use table 2 to select the appropriate number of TBX-RM1 rack-mount kits. 4. Calibration – Calibration of cold-junction sensors and attenuation terminal blocks is available for some devices. For more information, please visit ni.com/calibration. SCXI Terminal Blocks 2 BUY ONLINE at ni.com or CALL 800 813 3693 (U.S.) Module Terminal Blocks CJC1 Sensor Other Terminal Block Functions SCXI-1100 SCXI-1303 2 Isothermal, signal ground referencing, and open thermocouple detection SCXI-1102 SCXI-1300 3 – SCXI-1102B SCXI-1308 – Current input, 249 Ω resistor across each input SCXI-1102C BNC-2095 – BNC connectors, signal ground referencing TC-2095 Thermocouple plugs, signal ground referencing, isothermal SCXI-1104/C SCXI-1300 – – SCXI-1120 SCXI-1305 – BNC connectors, AC/DC coupling and ground referencing SCXI-1120D SCXI-1320 – SCXI-1126 SCXI-1327 Extends signal input range to 300 Vrms, switch configurable per channel SCXI-1328 Isothermal, high-accuracy design for thermocouples SCXI-1338 Current input, 249 Ω resistor across each input SCXI-1125 SCXI-1304/5 – BNC connectors, AC/DC coupling and ground referencing SCXI-1313A Extends signal input range to 150 Vrms, programmable per channel SCXI-1320 – SCXI-1327 Extends signal input range to 300 Vrms, switch configurable per channel SCXI-1328 Isothermal, high-accuracy design for thermocouples SCXI-1338 Current input, 249 Ω resistor across each input SCXI-1121 SCXI-1320 – SCXI-1321 Offset nulling and shunt calibration for strain gages SCXI-1327 Extends signal input range to 300 Vrms, switch configurable per channel SCXI-1328 Isothermal, high-accuracy design for thermocouples SCXI-1305 – BNC connectors, AC/DC coupling and signal ground referencing SCXI-1122 SCXI-1322 – SCXI-1124 SCXI-1325 – – SCXI-1127 SCXI-1331 – SCXI-1128 SCXI-1332 – Set up an 8 column by 4 row matrix SCXI-1129 SCXI-1333 – Configures SCXI-1129 as quad, 4 x 16 (2-wire) matrix SCXI-1334 – Configures SCXI-1129 as 4 x 64 (2-wire) matrix SCXI-1335 – Configures SCXI-1129 as 8 x 32 (2-wire) matrix SCXI-1336 – Configures SCXI-1129 as 16 x 16 (2-wire) matrix SCXI-1337 – Configures SCXI-1129 as a dual 8 x 16 (2-wire) matrix SCXI-1339 – Configures SCXI-1129 as a dual 4 x 32 (2-wire) matrix SCXI-1140 SCXI-1301 – – SCXI-1304 – AC/DC coupling and signal ground referencing (configurable per channel) SCXI-1305 – BNC connectors, AC/DC coupling and signal ground referencing SCXI-1141 SCXI-1304 – AC/DC coupling and signal ground referencing (configurable per channel) SCXI-1142 SCXI-1305 – BNC connectors, AC/DC coupling and signal ground referencing SCXI-1143 SCXI-1301 – – SCXI-1160 SCXI-1324 – – SCXI-1161 – – Screw terminals located in module SCXI-1162/HV SCXI-1326 – – SCXI-1163/R – – – SCXI-1180 SCXI-1302 – 50-pin terminal block SCXI-1181 SCXI-1300 – SCXI-1181K SCXI-1301 – – SCXI-1503 SCXI-1306 – SCXI-1520 SCXI-1314 – Quarter-bridge completion/shunt resistor SCXI-1540 SCXI-1315 – – SCXI-1581 SCXI-1300 – – 1 Cold-junction compensation (CJC) sensor for thermocouple measurements. 2 Recommended for thermocouples; includes isothermal design and high-precision CJC sensor. 3 Recommended for RTDs when using both SCXI-1102 and SCXI-1581. Table 3. SCXI-13xx, TC, and BNC Selection Guide Table 4. Custom Cabling Accessories Terminal Block Width Required (TBX-RM1 Rack-Mount) TBX-1303 One-half TBX-1325, TBX-1326, TBX-1328, TBX-1329, TBX-24F, CB-50 One-third Module Connector and Shell Assembly SCXI-1100, SCXI-1102B/C, SCXI-1140, SCXI-1141, SCXI-1181 SCXI-1310 SCXI-1120, SCXI-1120D, SCXI-1121, SCXI-1126, SCXI-1181 SCXI-1330 Table 2. Rack-Mount Widths of TBX Terminal Blocks |
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