National Instruments SCXI-1313 High-Voltage Attenuator Terminal Block

The SCXI-1313 (Part Number: 777687-13) is a Shielded Terminal Block designed for optimal use with the SCXI-1125 module. Every channel on the SCXI 1313 has a precision 100:1 resistive voltage divider that the user can utilize to measure voltages to 300 VRMS maximum or ±300 VDC with the use of the SCXI-1125. For low-voltage measurement applications, the user can separately bypass the dividers. There are 18 screw terminals on the NI SCXI-1313 Terminal Block which allow simple signal connection. One pair of screw terminals links to the SCXI-1125 module chassis ground. The other eight pairs of screw terminals link signals to the eight analog inputs.

The user can enable or disable the attenuator on the NI SCXI 1313 by altering the standard configuration settings for the Terminal Block in Measurement & Automation Explorer. The other option is for the user to alter the input limit ranges in their application. If the user is utilizing virtual channels, then the input limits configured in the virtual channel configurator are utilized to designate the attenuation circuitry correctly.

The SCXI-1313 Terminal Block has a temperature sensor that can output 1.91 to 0.65 V in a temperature range of 0 to 50 °C. If the user is utilizing LabVIEW, they can take advantage of the Convert Thermistor Reading. The user should utilize many samples to acquire the most precise reading possible. Loud conditions necessitate a larger number of samples to ensure preciseness.

SCXI-1313 Obsolete Status has been announced by National Instruments, but the Terminal Block will still be available for purchase and repairs by Apex Waves.