這SCXI-1327(零件號(hào):777687-27)屏蔽接線(xiàn)盒有18個(gè)螺絲端子，可以連接到以下模塊的輸入連接器:SCXI-1120,SCXI-1120D,SCXI-1121,SCXI-1125，或者SCXI-1126。用戶(hù)必須繞過(guò)激勵(lì)通道上的衰減器，才能精確操作SCXI-1121。這SCXI 1327可以擴(kuò)展的輸入范圍SCXI-1120/D和SCXI-1121到250伏。這接線(xiàn)盒還可以擴(kuò)展SCXI-1126模塊從5 V一直到300 V。中有開(kāi)關(guān)鎳SCXI-1327其分別允許或不允許每個(gè)通道的擴(kuò)展輸入電壓范圍。這SCXI-1327還將用戶(hù)SCXI模塊的輸入阻抗降至1 M。

鎳軟件能夠?qū)崦綦娮桦妷焊臑榈臒崦綦娮铚囟?/font>倪SCXI 1327 接線(xiàn)盒。LabVIEW可用于此目的；在數(shù)據(jù)采集和信號(hào)調(diào)理面板中，有一個(gè)轉(zhuǎn)換熱敏電阻讀數(shù)VI的選項(xiàng)。然而，如果用戶(hù)使用CVI或鎳DAQ，他們可以使用熱敏電阻轉(zhuǎn)換功能。然后，VI將獲取溫度傳感器的輸出電壓、參考電壓和精密電阻，以輸出熱敏電阻溫度。

這SCXI-1327接線(xiàn)板也可以校準(zhǔn)。這接線(xiàn)盒應(yīng)每年校準(zhǔn)一次，如果用戶(hù)的應(yīng)用要求較高，可更頻繁地校準(zhǔn)。如果模型每年校準(zhǔn)一次，那么它仍將滿(mǎn)足測(cè)量精度標(biāo)準(zhǔn)。如果鎳SCXI-1327不符合規(guī)格，則可能需要修理。

The SCXI-1327 (Part Number: 777687-27) shielded Terminal Block has 18 screw terminals that can attach to the following module’s input connector: SCXI-1120, SCXI-1120D, SCXI-1121, SCXI-1125, or SCXI-1126. The user must bypass the attenuators on the excitation channels for accurate operation with the SCXI-1121. The SCXI 1327 can extend the input range of the SCXI-1120/D and SCXI-1121 to ±250 V. This Terminal Block can additionally extend the threshold level of the SCXI-1126 module from 5 V all the way to 300 V. There are switches in the NI SCXI-1327 which allow or disallow the extended input voltage range separately for each channel. The SCXI-1327 also decreases the input impedance of the user’s SCXI module to 1 M.

NI software has the capability to change a thermistor voltage to the thermistor temperature for the NI SCXI 1327 Terminal Block. LabVIEW can be used for this purpose; in the Data Acquisition and Signal Conditioning palette, there is a Convert Thermistor Reading VI available. However, if the user is utilizing CVI or NI-DAQ instead, they can use the Thermistor_Convert function. Then, the VI will take the output voltage of the temperature sensor, the reference voltage, and the precision resistance to output the thermistor temperature.

The SCXI-1327 Terminal Block can also be calibrated. This Terminal Block should be calibrated once a year or more frequently if the user’s application is demanding. If the model is calibrated once a year, then it will still meet the measurement preciseness standards. If the NI SCXI-1327 is not performing within specifications, then it may require repair.