{"id":2487,"date":"2019-08-05T06:38:54","date_gmt":"2019-08-05T06:38:54","guid":{"rendered":"https:\/\/35.94.173.37\/blog\/?p=2487"},"modified":"2024-11-05T06:40:14","modified_gmt":"2024-11-05T06:40:14","slug":"national-instruments-scxi-part-7","status":"publish","type":"post","link":"https:\/\/www.apexwaves.com\/blog\/national-instruments-scxi-part-7\/","title":{"rendered":"National Instruments SCXI: Part 7"},"content":{"rendered":"

This is part 7 in our blog series about the\u00a0National Instruments SCXI platform<\/strong><\/a>! Part 7 will discuss the remaining front-mounting SCXI terminal blocks not previously discussed in\u00a0part 6<\/strong><\/a>. If you are new to our blog, you can read the previous 6 blog posts about\u00a0NI SCXI<\/strong>\u00a0before continuing!<\/p>\n

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The\u00a0NI SCXI-1317<\/strong>\u00a0is a front-mounting terminal block designed for use with the\u00a0SCXI-1521<\/strong>\u00a0and\u00a0SCXI-1521B<\/strong>\u00a0quarter-bridge strain gage input modules. This 24-channel terminal block delivers three terminals for every quarter-bridge strain gage channel. These terminals include excitation +, analog in, and quarter-bridge.<\/p>\n

The\u00a0SCXI-1320<\/a><\/strong>\u00a0is a general-purpose terminal block created for connecting signals to the\u00a0SCXI-1120<\/strong>,\u00a0SCXI-1120D<\/strong>,\u00a0SCXI-1121<\/strong>,\u00a0SCXI-1125<\/strong>, and\u00a0SCXI-1126<\/strong>\u00a0modules. This terminal block includes an onboard temperature sensor for measuring the reference junction temperature when utilizing thermocouples.<\/p>\n

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If you are using strain gauge transducers with the\u00a0SCXI-1121<\/a><\/strong>, you can add offset nulling and shunt calibration capability to your system with the\u00a0SCXI-1321<\/strong>\u00a0terminal block. With a trimming potentiometer on the front panel of the\u00a0SCXI-1321<\/strong>, you can manually null out the offset voltage of bridge transducers. Every channel includes shunt calibration circuits, controllable as a group from software. When activated, a switch connects a 301 k Ohm shunt resistor (Rcal) in parallel with the strain gauge. Both the nulling resistor (Rnull) and the shunt resistor (Rcal) are socketed, so you can easily change their values to adjust the nulling range and shunt value.<\/p>\n

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The\u00a0SCXI-1322<\/strong>\u00a0is the terminal block necessary to connect signals to the\u00a0SCXI-1122<\/strong>\u00a0module. The\u00a0SCXI-1322<\/strong>\u00a0is a general-purpose terminal block with an onboard temperature sensor for cold-junction compensation. The\u00a0SCXI-1325<\/strong>\u00a0is a terminal block with 26 screw terminals for signal connections to the\u00a0SCXI-1124<\/strong>\u00a0module. The\u00a0SCXI-1326<\/strong>\u00a0is a high-voltage terminal block with 48 screw terminals for signal connections to the\u00a0SCXI-1162<\/strong>,\u00a0SCXI-1162HV<\/strong>,\u00a0SCXI-1163<\/strong>, and\u00a0SCXI-1163R<\/strong>\u00a0modules.<\/p>\n

With the\u00a0SCXI-1327<\/a><\/strong>, you can extend the input range of the\u00a0SCXI-1120<\/strong>,\u00a0SCXI-1120D<\/strong>,\u00a0SCXI-1121<\/strong>, and\u00a0SCXI-1125<\/strong>\u00a0modules to 300 VDC or 300 Vrms. You can also utilize the\u00a0SCXI-1327<\/strong>\u00a0to extend the threshold level of the\u00a0SCXI-1126<\/strong>\u00a0module from 5 V up to 300 V. The extended input voltage range is activated or deactivated on a per-channel basis using switches within the\u00a0SCXI-1327<\/strong>. The\u00a0SCXI-1327<\/strong>\u00a0also contains an onboard temperature sensor for cold-junction compensation with thermocouples.<\/p>\n

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If you are using thermocouples with the\u00a0SCXI-1120<\/strong>,\u00a0SCXI-1120D<\/strong>,\u00a0SCXI-1121<\/strong>, or\u00a0SCXI-1125<\/strong>\u00a0you can use the\u00a0SCXI-1328<\/strong>\u00a0for maximum preciseness. The\u00a0SCXI-1328<\/strong>\u00a0has isothermal construction that reduces errors caused by thermal gradients between terminals and the extremely precise cold-junction sensor.<\/p>\n

The\u00a0National Instruments SCXI-1331<\/strong>\u00a0is a general-purpose terminal block for the\u00a0SCXI-1127<\/strong>\u00a0or\u00a0SCXI-1128<\/strong>\u00a0multiplexer\/matrix switch modules. This terminal block offers 64 generic screw terminals for connection to the\u00a0SCXI-1127\/1128<\/strong>\u00a0lines and a cold-junction compensation sensor. Choose the\u00a0SCXI-1331<\/strong>\u00a0when using the\u00a0SCXI-1127<\/strong>\u00a0or\u00a0SCXI-1128<\/strong>\u00a0to scan thermocouple or voltage signals or when you require a matrix configuration other than 8 columns X 4 rows.<\/p>\n

The\u00a0SCXI-1333<\/strong>\u00a0configures the\u00a0SCXI-1129<\/a><\/strong>\u00a0high-density matrix as quad 4\u00d716 (2-wire) matrix. This terminal block offers direct connectivity of signal wires to the screw terminals inside the terminal blocks. The terminal block works with the use of matrix expansion plugs for instant row expansion via column connection and requires no external wiring. The\u00a0SCXI-1334<\/strong>\u00a0configures the\u00a0SCXI-1129<\/strong>\u00a0high-density matrix as 4\u00d764 (2-wire) matrix. It provides direct connectivity of signal wires to the screw terminals inside the terminal blocks. The terminal block works with the use of matrix expansion plugs and matrix expansion cables for instant row expansion and column expansion and requires no external wiring.<\/p>\n

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The\u00a0SCXI-1335<\/strong>\u00a0configures the\u00a0SCXI-1129<\/strong>\u00a0high-density matrix as quad 8\u00d732 (2-wire) matrix. It provides direct connectivity of signal wires to the screw terminals inside the terminal blocks. The terminal block works with the use of matrix expansion plugs for instant row expansion via column connection and requires no external wiring. The\u00a0SCXI-1336<\/strong>\u00a0configures the\u00a0SCXI-1129<\/strong>\u00a0high-density matrix as a 16\u00d716 (2-wire) matrix. It provides direct connectivity of signal wires to the screw terminals inside the terminal blocks. The terminal block also works with the use of the matrix expansion cable for instant row expansion and requires no external wiring. The\u00a0SCXI-1337<\/strong>\u00a0configures the\u00a0SCXI-1129<\/strong>\u00a0high-density matrix as a dual 8\u00d716 (2-wire) matrix. It provides direct connectivity of signal wires to the screw terminals inside the terminal blocks. The terminal block also works with the use of the matrix expansion cable for instant row expansion and requires no external wiring.<\/p>\n

The\u00a0SCXI-1338<\/strong>\u00a0is a current input terminal block for the following analog input modules: the\u00a0SCXI-1120<\/strong>,\u00a0SCXI-1120D<\/strong>,\u00a0SCXI-1125,\u00a0<\/strong>and\u00a0SCXI-1126<\/strong>. Every input contains a 249 Ohm precision resistor, so you can read 0-20 mA or 4-20 mA current inputs. The\u00a0SCXI-1339<\/strong>\u00a0configures the\u00a0SCXI-1129<\/strong>\u00a0high-density matrix as a dual 4\u00d732 (2-wire) matrix. It provides direct connectivity of signal wires to the screw terminals inside the terminal blocks. The terminal block also works with the use of the matrix expansion cable for instant row expansion and requires no external wiring.<\/p>\n

The\u00a0SCXI-1381K<\/strong>\u00a0is a kit of unassembled terminal block components for developers building custom SCXI terminal blocks with custom circuit boards and signal connectors. The\u00a0SCXI-1381K<\/strong>\u00a0includes metal terminal block housing, strain relief assembly, and 96-pin DIN connector for mating with SCXI modules. Designed for special OEM products, the kit does not include a circuit board or screw terminals for signal connections.<\/p>\n

Stay tuned for part 8 in our SCXI blog series coming soon!<\/p>\n","protected":false},"excerpt":{"rendered":"

This is part 7 in our blog series about the\u00a0National Instruments SCXI platform! Part 7 will discuss the remaining front-mounting SCXI terminal blocks not previously discussed in\u00a0part 6. If you are new to our blog, you can read the previous 6 blog posts about\u00a0NI SCXI\u00a0before continuing!   The\u00a0NI SCXI-1317\u00a0is a front-mounting terminal block designed for […]<\/p>\n","protected":false},"author":1,"featured_media":2488,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[8],"tags":[31,82,393,421,474,738],"class_list":["post-2487","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-national-instruments","tag-aerospace-and-defense","tag-aviation","tag-national-instruments","tag-national-instruments-scxi","tag-ni-scxi","tag-scxi-terminal-blocks"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/posts\/2487","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/comments?post=2487"}],"version-history":[{"count":1,"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/posts\/2487\/revisions"}],"predecessor-version":[{"id":2489,"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/posts\/2487\/revisions\/2489"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/media\/2488"}],"wp:attachment":[{"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/media?parent=2487"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/categories?post=2487"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.apexwaves.com\/blog\/wp-json\/wp\/v2\/tags?post=2487"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}