777509-01

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. Terminal Block TBX-1303 TBX-1316 TBX-1325 TBX-1326 TBX-1328 TBX-1329 TBX-96 TBX-24F1 CB-50 1 The 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 Compatible SCXI Modules SCXI-1100, SCXI-1102, SCXI-1102B/C, SCXI-1181 SCXI-1120/D, SCXI-1125, SCXI-1126 SCXI-1124 SCXI-1162, SCXI-1162HV, SCXI-1163, SCXI-1163R SCXI-1120, SCXI-1120D, SCXI-1121, SCXI-1125, SCXI-1126 SCXI-1120, SCXI-1120D, SCXI-1121, SCXI-1125, SCXI-1126 SCXI-1100, SCXI-1102, SCXI-1102B/C All modules SCXI-1180 Cabling SH96-96 or R96-96 SH32-32-A SH48-48-A SH48-48-B SH32-32-A SH32-32-A SH96-96 or R96-96 SCXI-1104, SCXI-1181, SCXI-1104C User-supplied wiring NB1 CJC  – – –  – – – – 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) – – – 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 SCXI Terminal Blocks 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 frontmounting 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. Terminal Block TBX-1303 TBX-1325, TBX-1326, TBX-1328, TBX-1329, TBX-24F, CB-50 Module SCXI-1100 SCXI-1102 SCXI-1102B SCXI-1102C SCXI-1104/C SCXI-1120 SCXI-1120D SCXI-1126 SCXI-1125 SCXI-1121 SCXI-1122 SCXI-1124 SCXI-1127 SCXI-1128 SCXI-1129 SCXI-1140 SCXI-1141 SCXI-1142 SCXI-1143 SCXI-1160 SCXI-1161 SCXI-1162/HV SCXI-1163/R SCXI-1180 SCXI-1181 SCXI-1181K SCXI-1503 SCXI-1520 SCXI-1540 SCXI-1581 1 Cold-junction Terminal Blocks SCXI-1303 2 SCXI-1300 3 SCXI-1308 BNC-2095 TC-2095 SCXI-1300 SCXI-1305 SCXI-1320 SCXI-1327 SCXI-1328 SCXI-1338 SCXI-1304/5 SCXI-1313A SCXI-1320 SCXI-1327 SCXI-1328 SCXI-1338 SCXI-1320 SCXI-1321 SCXI-1327 SCXI-1328 SCXI-1305 SCXI-1322 SCXI-1325 SCXI-1331 SCXI-1332 SCXI-1333 SCXI-1334 SCXI-1335 SCXI-1336 SCXI-1337 SCXI-1339 SCXI-1301 SCXI-1304 SCXI-1305 SCXI-1304 SCXI-1305 SCXI-1301 SCXI-1324 – SCXI-1326 – SCXI-1302 SCXI-1300 SCXI-1301 SCXI-1306 SCXI-1314 SCXI-1315 SCXI-1300 CJC1 Sensor   – –  – –     –          –  –  – – – – – – – – – – – – – – – – – –  –  – – – Other Terminal Block Functions Isothermal, signal ground referencing, and open thermocouple detection – Current input, 249 Ω resistor across each input BNC connectors, signal ground referencing Thermocouple plugs, signal ground referencing, isothermal – BNC connectors, AC/DC coupling and ground referencing – Extends signal input range to 300 Vrms, switch configurable per channel Isothermal, high-accuracy design for thermocouples Current input, 249 Ω resistor across each input BNC connectors, AC/DC coupling and ground referencing Extends signal input range to 150 Vrms, programmable per channel – Extends signal input range to 300 Vrms, switch configurable per channel Isothermal, high-accuracy design for thermocouples Current input, 249 Ω resistor across each input – Offset nulling and shunt calibration for strain gages Extends signal input range to 300 Vrms, switch configurable per channel Isothermal, high-accuracy design for thermocouples BNC connectors, AC/DC coupling and signal ground referencing – – – Set up an 8 column by 4 row matrix Configures SCXI-1129 as quad, 4 x 16 (2-wire) matrix Configures SCXI-1129 as 4 x 64 (2-wire) matrix Configures SCXI-1129 as 8 x 32 (2-wire) matrix Configures SCXI-1129 as 16 x 16 (2-wire) matrix Configures SCXI-1129 as a dual 8 x 16 (2-wire) matrix Configures SCXI-1129 as a dual 4 x 32 (2-wire) matrix – AC/DC coupling and signal ground referencing (configurable per channel) BNC connectors, AC/DC coupling and signal ground referencing AC/DC coupling and signal ground referencing (configurable per channel) BNC connectors, AC/DC coupling and signal ground referencing – – Screw terminals located in module – – 50-pin terminal block – – – Quarter-bridge completion/shunt resistor – – 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 Width Required (TBX-RM1 Rack-Mount) One-half One-third Module SCXI-1100, SCXI-1102B/C, SCXI-1140, SCXI-1141, SCXI-1181 SCXI-1120, SCXI-1120D, SCXI-1121, SCXI-1126, SCXI-1181 Connector and Shell Assembly SCXI-1310 SCXI-1330 Table 2. Rack-Mount Widths of TBX Terminal Blocks Table 4. Custom Cabling Accessories BUY ONLINE a t ni.com o r CALL 800 813 3693 (U.S.) 2 SCXI Terminal Blocks SCXI-1300 ........................................................................................................................777687-00 The SCXI-1300 connects input signals to the SCXI-1100, SCXI-1102/B/C, and SCXI-1104/C modules. The SCXI-1300 is a general-purpose terminal block with an onboard temperature sensor for cold-junction compensation. Also works with SCXI-1181 and SCXI-1181K modules. SCXI-1301 ........................................................................................................................777687-01 20-screw terminal block for the SCXI-1140, SCXI-1181, and SCXI-1181K modules. Figure 1. SCXI-1303 Terminal Block SCXI-1302 ........................................................................................................................777687-02 50-screw terminal block for the SCXI-1180 feedthrough panel. SCXI-1303 (see Figure 1) ................................................................................................777687-03 Terminal block for use with the SCXI-1100 and SCXI-1102/B/C modules. Designed especially for high-accuracy thermocouple measurements, the SCXI-1303 includes isothermal construction that minimizes errors caused by thermal gradients between terminals and the cold-junction sensor. The SCXI-1303 also includes circuitry for open-thermocouple detection as well as automatic ground referencing for floating (nongrounded) thermocouples. Figure 2. SCXI-1305 Terminal Block SCXI-1304 ........................................................................................................................777687-04 The SCXI-1304, for the SCXI-114x modules, includes AC coupling circuitry, with switches on each channel. Each channel also includes a switchable connection to ground through a 100 kΩ bias resistor to provide a reference for floating input sources. SCXI-1305 (see Figure 2) ................................................................................................777687-05 Includes convenient BNC connectors for use with the SCXI-1120/D, SCXI-1121, SCXI-1125, SCXI-1126, and SCXI-114x. Functionally equivalent to the SCXI-1304 terminal block, the SCXI-1305 includes switchable AC coupling circuitry and ground referencing on each channel. SCXI-1306 ........................................................................................................................779698-01 Terminal block for the SCXI-1503 RTD module. Provides 16 pairs of screw terminals for differential input signals and 16 pairs of screw terminals for current excitation signals. You can configure each channel for voltage or resistive measurements. SCXI-1308 ........................................................................................................................777687-08 Current input terminal block for the SCXI-1100 and SCXI-1102/B/C analog input modules. Each input includes a 249 Ω precision resistor so you can read 0 to 20 mA and 4 to 20 mA current inputs. SCXI-1310 (see Figure 3) ................................................................................................777687-10 Connector and shell assembly used to create custom cabling solutions from the SCXI-1100, SCXI-1102/B/C, SCXI-1104/C, SCXI-114x, and SCXI-1181 to custom terminations. A low-cost alternative to SCXI terminal blocks, it consists of a hardened plastic enclosure and one connector with solder pins for signal connections. SCXI-1313A ....................................................................................................................777687-13 Extends the input range of the SCXI-1125 to 150 Vrms or 150 VDC, on a per-channel basis programmatically through software commands. The SCXI-1313A also includes an onboard temperature sensor for thermocouples cold-junction compensation. Figure 3. SCXI-1310 Connector and Shell Assembly BUY ONLINE a t ni.com o r CALL 800 813 3693 (U.S.) 3 SCXI Terminal Blocks SCXI-1314 ........................................................................................................................777687-14 Front-mounting terminal block for the SCXI-1520 module. With factory-installed and socketed 350 Ω quarter-bridge completion resistors for each channel. Eight 120 Ω resistors for use with 120 Ω quarter-bridge strain gauges are included, but not installed. It also includes two factoryinstalled, socketed 100 kΩ shunt calibration resistors per channel. SCXI-1315 ........................................................................................................................777687-15 8-channel front-mounting terminal block for the SCXI-1540 LVDT with six terminals for each LVDT channel – CH+, CH-, EX+, EX-, Synch, and GND. SCXI-1320 (see Figure 4) ................................................................................................777687-20 General-purpose terminal block for connecting signals to the SCXI-1120/D, SCXI-1121, SCXI-1125, and SCXI-1126 modules. It includes an onboard temperature sensor for cold-junction compensation using thermocouples, but the SCXI-1328 is recommended for precision thermocouple measurements. SCXI-1321 (see Figure 5) ................................................................................................777687-21 Adds nulling and shunt calibration to SCXI-1121 strain guage applications. With a front-panel trimming potentiometer, you can manually null out the offset voltage of bridge transducers. Each channel includes shunt calibration circuits. When activated, a switch connects a 301 kΩ shunt resistor in parallel with the strain gauge. Both the nulling resistor and the shunt resistor are socketed for easy customization. SCXI-1322 ........................................................................................................................777687-22 Terminal block required to connect signals to the SCXI-1122 module that includes an onboard temperature sensor for cold-junction compensation. Figure 6. SCXI-1327 Terminal Block Figure 4. SCXI-1320 Terminal Block Figure 5. SCXI-1321 Terminal Block SCXI-1324 ........................................................................................................................777687-24 High-voltage terminal block with 48 screw terminals for the SCXI-1160 relay module. SCXI-1325 ........................................................................................................................777687-25 26-screw terminal block for the SCXI-1124 module. SCXI-1326 ........................................................................................................................777687-26 High-voltage terminal block with 48 screw terminals for the SCXI-1162 Series and SCXI-1163 Series modules. SCXI-1327 (see Figure 6) ................................................................................................777687-27 With the SCXI-1327 you can extend the input range of the SCXI-1120/D, SCXI-1121 and SCXI-1125 to ±300 Vrms , and extend the threshold level of the SCXI-1126 module from 5 V up to 300 V. The extended input voltage range is enabled or disabled on a per-channel basis using switches located within the SCXI-1327. The SCXI-1327 also includes an onboard temperature sensor for cold-junction compensation with thermocouples. Using the SCXI-1327 reduces the input impedance of your SCXI module to 1 MΩ. SCXI-1328 (see Figure 7) ................................................................................................777687-28 Isothermal terminal block with a high-precision cold-junction sensor for high-accuracy thermocouple applications with the SCXI-1120/D, SCXI-1121, or SCXI-1125. Figure 7. SCXI-1328 Terminal Block BUY ONLINE a t ni.com o r CALL 800 813 3693 (U.S.) 4 SCXI Terminal Blocks SCXI-1330 ........................................................................................................................777687-30 Connector and shell assembly (hardened plastic enclosure and solder pins) used to create custom cabling solutions from the SCXI-1120/D, SCXI-1121, SCXI-1125, SCXI-1126, and SCXI-1181 to custom terminations. SCXI-1331 (see Figure 8) ................................................................................................777687-31 General-purpose terminal block for the SCXI-1127 multiplexer/matrix module with 64 generic screw terminals and a cold-junction compensation sensor. For SCXI-1127 multiplexer applications or matrix configurations other than a multiple of eight columns by four rows. Includes sockets for matrix expansion cables. SCXI-1332 (see Figure 9) ................................................................................................777687-32 Multiplexer/matrix terminal block for the SCXI-1127 configures the SCXI-1127 as an eight column by four row switching matrix. You can connect signals to both the columns and rows using screw terminals. Figure 9. SCXI-1332 Terminal Block Figure 8. SCXI-1331 Terminal Block SCXI-1333 ........................................................................................................................777687-33 SCXI-1334 ........................................................................................................................777687-34 SCXI-1335 ........................................................................................................................777687-35 SCXI-1336 ........................................................................................................................777687-36 SCXI-1337 ........................................................................................................................777687-37 SCXI-1339 ........................................................................................................................777687-39 These terminal blocks are designed for use with the SCXI-1129 high-density matrix switching module. Each of these terminal blocks gives the high-density matrix a different configuration. SCXI-1338 ........................................................................................................................777687-38 Current input terminal block for the SCXI-1120/D, SCXI-1125, and SCXI-1126. Each input includes a 249 Ω precision resistor for reading 0 to 20 mA or 4 to 20 mA current inputs. BNC-2095 (see Figure 10)................................................................................................777508-01 The BNC-2095 has 32 labeled BNC connectors, one for each input channel of the SCXI-1100 or SCXI-1104/C. The BNC-2095 also includes circuitry for configurable signal referencing. You can enable or disable both the pull-up and pull-down resistors on a per-channel basis using switches. TC-2095 ............................................................................................................................777509-01 The TC-2095 has 32 miniature uncompensated thermocouple plugs, one for each input channel of the SCXI-1100 or SCXI-1102/B/C and a thermistor for accurate cold-junction compensation. In addition, the TC-2095 includes circuitry for configurable signal referencing. You can enable or disable both the pull-up and pull-down resistors on a per-channel basis using switches located on the rear of the TC-2095. The TC-2095 is not recommended for use with the SCXI-1104/C. The TC-2095 requires the SH96-96 or R96-96 for connection to an SCXI module. Figure 10. BNC-2095 BUY ONLINE a t ni.com o r CALL 800 813 3693 (U.S.) 5 SCXI TBX Terminal Blocks TBX-1303 (see Figure 11) ................................................................................................777207-03 Designed for thermocouples, with cold-junction compensation sensor, isothermal construction with a plastic cover to minimize thermal gradients, open-thermocouple detection circuitry, and automatic ground-referencing circuitry. With the SCXI-1102B/C, the TBX-1303 provides a highimpedance path to ground so that systems work reliably with either floating or groundreferenced thermocouples. For applications with the SCXI-1100, you can configure the channels as ground-referenced or floating in blocks of eight channels. The TBX-1303 also works with the SCXI-1181 breadboard module. TBX-96 ............................................................................................................................777264-01 Mass termination terminal block that provides a generic solution for the SCXI-1100, SCXI-1102B/C, SCXI-1104/C, and the SCXI-1140 series. TBX-1316 (see Figure 12) ................................................................................................777207-16 High-voltage terminal block for extending the input range of the SCXI-1120/D, SCXI-1125, or SCXI-1126 modules to ±1000 VDC (680 Vrms). Each input channel includes a 200:1 attenuation circuit and offers a positive, negative, and ground terminal for up to 12 AWG wire. You can panel mount this enclosure or simply place it on a desktop. The hinged lid makes accessing the signals easier and key locked for safety. The TBX-1316 is rated for Category III installations. TBX-1325 ........................................................................................................................777207-25 Terminal block with 30 screw terminals for signal connections to the SCXI-1124 module. You cable the TBX-1325 to the SCXI-1124 with the SH48-48-A shielded cable. TBX-1326 (see Figure 13) ................................................................................................777207-26 High-voltage terminal block with 48 screw terminals for signal connections to the SCXI-1162, SCXI-1162HV, SCXI-1163, and SCXI-1163R modules. You can cable the TBX-1326 to the SCXI module with the SH48-48-B shielded cable. Warning: The TBX-1326 and SH48-48-B limit the maximum working common-mode voltage between banks or between banks and earth ground to 250 Vrms maximum. TBX-1328 (see Figure 14) ................................................................................................777207-28 Terminal block for the SCXI-1120/D, SCXI-1121, SCXI-1125, and SCXI-1126 modules. The TBX-1328 includes a total of 24 screw terminals, including three terminals (CH+, CH-, and chassis ground) for each input channel and sockets for the installation of resistors for 4 to 20 mA inputs. When used with thermocouples, the TBX-1328 maximizes measurement accuracy with an isothermal construction and a plastic cover that minimizes thermal gradients across the terminal block and the resulting errors. TBX-1329 (see Figure 15) ................................................................................................777207-29 Provides selectable AC coupling for the SCXI-1120/D, SCXI-1121, SCXI-1125, and SCXI-1126 modules. TBX-24F ..........................................................................................................................777276-01 The TBX-24F is a general-purpose screw terminal block with feedthrough connections for 24 signal lines. You connect the TBX-24F to the SCXI module with discrete wires connected to a standard SCXI terminal block. Figure 11. TBX-1303 Figure 12. TBX-1316 Figure 13. TBX-1326 Figure 14. TBX-1328 Figure 15. TBX-1329 BUY ONLINE a t ni.com o r CALL 800 813 3693 (U.S.) 6 SCXI-13xx, TBX, and BNC/TC Terminal Block Specifications TBX Series Typical for 25˚ C unless otherwise noted. Maximum working voltage (signal + common mode) TBX-1316 ........................................ 1000 VDC, 680 Vrms TBX-1325 ........................................ 250 Vrms TBX-1326/1328/1329/24F .............. 300 Vrms Signal referencing on TBX-1303 CH+ input ........................................ 10 MΩ to +5 V (socketed) CH- input......................................... 10 MΩ or 10 Ω to ground (user configurable, socketed) Input impedance for TBX-1316 Differential...................................... 40 MΩ Single-ended................................... 20 MΩ Absolute accuracy for TBX-1316 Gain error........................................ 1% Temperature drift............................ 20 ppm/˚C AC coupling (TBX-1329 only) Corner frequency ............................ 0.072 Hz 1-pole RC DC rejection capacity ..................... 250 VDC Wire resistance of cables................... 0.21 Ω/m per conductor Specifications Typical for 25 ˚C unless otherwise noted. SCXI-13xx Cold-Junction Sensor Accuracy and repeatability1 Terminal Block SCXI-1300 SCXI-1303 2 SCXI-1320 SCXI-1321 SCXI-1322 SCXI-1327 SCXI-1328 15 to 35 ˚C 1.3 °C 0.5 °C 1.3 °C 1.3 °C 0.8 °C 0.9 °C 0.5 °C Accuracy 0 to 15 ˚C and 35 to 55 ˚C 1.3 °C 0.85 °C 1.3 °C 1.3 °C 1.2 °C 1.3 °C 0.9 °C Repeatability 0.5 °C 0.35 °C 0.5 °C 0.5 °C 0.4 °C 0.5 °C 0.2 °C Sensor output for SCXI-1300, SCXI-1320, SCXI-1321 .................... ±10 mV/˚C SCXI-1303/1322/1327/1328........... 1.91 V (at 0 ˚C) to 0.58 V (at 55 ˚C) (thermistor) Maximum field wire gauge for SCXI-1300/1302/1303/ 1314/1322/1324 ............................. 26-16 AWG 1301/1304/1313A/1315/1320/1321/ 1325/1327/1328/1331/1332 .......... 26-14 AWG AC coupling (SCXI-1304 and SCXI-1305) ............................... The AC coupling circuitry on each channel has a corner frequency of 0.16 Hz, rejection capacity of ±50 VDC, and input impedance of 2 MΩ differential, 1 MΩ common mode Corner frequency ............................ 0.16 Hz 1-pole RC DC rejection capacity ..................... ±50 VDC Current input SCXI-1308/1338 ....... 0 to 20 mA Cold-Junction Sensor (TBX-1303 and TBX-1328) Accuracy and repeatability4 Terminal Block TBX-13033 TBX-1328 15 to 35 ˚C 0.5 ˚C 0.5 ˚C Accuracy 0 to 15 ˚C and 35 to 55 ˚C 0.85 ˚C 0.9 ˚C Repeatability 0.35 ˚C 0.2 ˚C Sensor output...................................... 1.91 V (at 0 ˚C) to 0.58 V (at 55 ˚C) (thermistor) General Physical Compatible DIN rails5 ......................... DIN EN 50 022, DIN EN 50 035 Screw terminal size TBX-1316 ........................................ 26-12 AWG Others ............................................. 26-14 AWG BNC-2095, TC-2095 Input connectors BNC-2095........................................ 32 BNC connectors TC-2095........................................... 32 thermocouple plugs, uncompensated Output (to SCXI module) ..................... 96-pin DIN Cold-junction sensor (TC-2095) Output ............................................. 1.91 V (0 ˚C) to 0.58 V (55 ˚C) Accuracy (15 to 35 ˚C)3 ................... 0.5 ˚C for SCXI-1102/B/C 0.65 ˚C for SCXI-1100 Repeatability (15 to 35 ˚C)3 ............ 0.35 ˚C for SCXI-1102/B/C 0.5 ˚C for SCXI-1100 Signal referencing CH+ input ........................................ 10 MΩ to +5 V, user switchable CH- input......................................... 10 MΩ or +10 Ω to ground, user switchable 1-pole RC Dimensions TBX-13036........................................... 19.7 by 11.2 by 7.62 cm (7.8 by 4.4 by 3.0 in.) TBX-1316............................................. 30 by 20 by 8.1 cm (11.8 by 7.9 by 3.2 in.) TBX-1325/1326/1328/13296 .............. 12.7 by 11.2 by 7.62 cm (5.0 by 4.4 by 3.0 in.) TBX-24F ............................................... 12.4 by 4.3 by 5.1 cm (4.9 by 1.7 by 2.0 in.) TBX-96................................................. 19.8 by 12.6 by 6.3 cm (7.8 by 4.9 by 2.5 in.) Physical Dimensions.......................................... 49.3 by 4.3 by 18.8 cm (19.0 by 1.7 by 7.4 in.) BUY ONLINE a t ni.com o r CALL 800 813 3693 (U.S.) 7 SCXI-13xx, TBX, and BNC/TC Terminal Block Specifications Certification and Compliance SCXI-1320/1321/1326/1327/ 1328/1338....................................... SCXI-1322/1324/1325......................... TBX-1316............................................. TBX-1328/1329 ................................... TBX-1325/1326 ................................... 300 V, CAT II working voltage 250 V, CAT II working voltage 1000 V, CAT III working voltage 300 V, CAT II working voltage 250 V, CAT II working voltage European Compliance EMC .................................................... EN 61326 Group I Class A, 10 m, Table 1 Immunity Safety ................................................. EN 61010-1 North American Compliance EMC .................................................... FCC Part 15 Class A using CISPR Safety (SCXI-1320/1321/1326/1327/1328/ 1338/SCXI-1322/1324/1325) ......... UL Listed to UL 3111-1 CAN/CSA C22.2 No. 1010.1 Safety (TBX-1325/1326/1328/1329) .. UL Listed to UL 3111-1 CAN/CSA C22.2 No. 1010.1 Australia and New Zealand Compliance EMC (except TBX-1316) ...................... AS/NZS 2064.1/2 (CISPR-11) 1 Accuracy and repeatability include combined effects of sensor, circuitry, and thermal gradients between the sensor and any screw terminal. Thermal gradients for nonisothermal terminal blocks (SCXI-1300, SCXI-1320, SCXI-1321, SCXI-1322, and SCXI-1327) are assumed to be 0.4 ˚C. 2 With SCXI-1102 module. With SCXI-1100 module, add error of 0.15 ˚C. 3 Accuracy and repeatability include combined effects of sensor, circuitry, and thermal gradients between the sensor and thermocouple connection. 4 Accuracy and repeatability include combined effects of sensor, circuitry, and thermal gradients between the sensor and any screw terminal. 5 TBX-1316 is not DIN-rail mountable. 6 Height dimension (7.62 cm) includes DIN-rail mounting and plastic cover. For a definition of specific terms, please visit ni.com/glossary. BUY ONLINE a t ni.com o r CALL 800 813 3693 (U.S.) 8 NI Services and Support NI has the services and support to meet your needs around the globe and through the application life cycle – from planning and development through deployment and ongoing maintenance. 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