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National Instruments 778572-36 PXI Matrix Switch Module

The National Instruments 778572-36 is a high-tech 8x68 PXI matrix switch module. It is also identified as the PXI-2536 module. It features 8 rows and 68 columns that makes it ideal for routing low-power DC signals in validation test systems for mass-produced devices like semiconductor chips and PCBs. The module employs FET relay with 12 µs operate time and 50,000 crosspoints per second maximum scan rate. The module can simultaneously drive up to 544 switches and offers an unlimited expected relay life when operated within specified limits. It includes features for relay monitoring and deterministic operation with hardware triggers that significantly improve test throughput.

The 778572-36 supports a maximum switching voltage of ±12 VDC or 8 VAC per channel and a maximum switching power of 1.2 W. It can handle a maximum switching current of 100 mA and has a typical DC isolation resistance of over 1 GΩ at 23°C which will decrease to 334 MΩ at 55°C. The typical current leakage of the module between column and ground is 10 nA, and it features an offset voltage of 10 µV. It includes top-quality overvoltage protection that withstands ±36 VDC when powered on and ±40 VDC when powered off. The total path resistance from row to column is 10 Ω (typically) and 15.5 Ω (maximum).

The single crosspoint bandwidth of this 778572-36 model is 1 MHz. The overall dimensions of this matrix switch module are 21.6 x 2.0 x 13.0 cm. It weighs only 159 g. The unit also features three 68-pin VHDCI connectors and requires 3.3 V at 1.7 W and 12 V at 1.3 W. The module operates within a temperature range of 0 °C to 55 °C and under the relative humidity of 5% to 85%. It must be installed under the allowable altitude range of 0 to 2000 MSL. In addition, the instrument should only be used indoors.

The 778572-36 unit is compliant with multiple European directives that include the Low-Voltage Directive, Electromagnetic Compatibility Directive, and Restriction of Hazardous Substances. It adheres to various safety and electromagnetic compatibility standards which ensure it meets international requirements for measurement, control, and laboratory use.