這鎳SCXI-1521B(零件號(hào):777966-21B)模塊非常適合具有大量通道的應(yīng)用，包括使用120ω四分之一橋應(yīng)變計(jì)的靜態(tài)和疲勞結(jié)構(gòu)測(cè)試。每個(gè)通道都有一個(gè)固定增益放大器和固定2極點(diǎn)巴特沃茲濾波器，用于精確測(cè)量。每個(gè)通道還有一個(gè)單獨(dú)的0-5 V可編程激勵(lì)源?？捎糜谠撃K的軟件類型為NI-DAQmx 7.3或更高版本，以及LabVIEW或LabWindows/CVI。

SCXI-1317帶螺絲端子的前安裝接線盒是操作所必需的SCXI 1521B模塊。可與一起使用的其他附件SCXI-1521B是SCXI-1310連接器和外殼組件和TBX-96 DIN導(dǎo)軌安裝接線盒。這SCXI-1310提供96個(gè)孔眼端子，用于簡單的鉤焊信號(hào)連接，以及定制的大量終端連接。這TBX-96有96個(gè)標(biāo)準(zhǔn)螺絲端子，需要一根電纜連接到應(yīng)變/電橋輸入模塊。這SH96-96屏蔽1米電纜或R96-961 m非屏蔽電纜就足夠了。

上的前信號(hào)連接器鎳SCXI-1521B是一種獨(dú)特的96針DIN C插頭連接器。該連接器用于所有信號(hào)連接。當(dāng)引用該模塊的管腳引出線時(shí)，標(biāo)記為RSVD的管腳被保留。用戶在任何情況下都不能連接到RSVD引腳。引腳的其他標(biāo)簽包括EX +X其連接到傳感器激勵(lì)QTRX其連接到四分之一橋完成電阻器和a1X其連接到放大器終端。X指的是頻道號(hào)。

The NI SCXI-1521B (Part Number: 777966-21B) module is well-suited for applications with a large quantity of channels, including static and fatigue structural tests with 120 ? quarter-bridge strain gauges. Every channel has a fixed-gain amplifier and fixed 2-pole Butterworth filter for exact measurements. There is additionally an individual 0-5 V programmable excitation source for every channel. The software types which can be used with this module are the NI-DAQmx 7.3 or later and either LabVIEW or LabWindows/CVI.

The SCXI-1317 Front-Mounting Terminal Block with screw terminals is necessary to operate the SCXI 1521B module. Other accessories that can be used with the SCXI-1521B are the SCXI-1310 Connector and Shell Assembly and the TBX-96 DIN-rail Mounted Terminal Block. The SCXI-1310 offers 96 eyelet terminals for simple hook-and-solder signal linking, as well as custom mass termination linking. The TBX-96 has 96 standard screw terminals and requires a cable to be linked to the Strain/Bridge Input Module. The SH96-96 shielded 1 m cable or the R96-96 1 m unshielded cable will suffice.

The front signal connector on the NI SCXI-1521B is a distinct 96-pin DIN C male connector. This connector is the one used for all signal connections. When referencing the pin-out for this module, the pins branded RSVD are reserved. The user cannot make connections to the RSVD pins under any circumstances. Other labels for the pins include EX + X which links to the sensor excitation, QTR X which links to the quarter-bridge completion resistor, and AI X which links to the amplifier terminal. X refers to the channel number.