National Instruments 780587-26 Multiplexer Switch Module 

National Instruments part number 780587-26 is an identifying part number for the PXIe-2526, a PXI Multiplexer Switch Module. The NI 780587-26 is a 158 Channel Multiplexer Switch Module with a maximum switching current range of 2 A. It is a high-density PXI multiplexer switch module designed for routing signals within automated test systems. It utilizes electromechanical relays to execute immediate switch operations in either a 158x1 1-wire or 79x1 2-wire multiplexer topology. 

Additionally, this device includes onboard relay counting for effective relay monitoring. The PXIe-2526 is an ideal switch module for use with automated test systems, making the process of routing signals seamless and enabling users to achieve highly accurate test results that meet industrial requirements. 

This NI Multiplexer Switch Module features built-in electromechanical relays for quick switching operations. It utilizes one of the specified topologies to implement the switching effectively. The initial DC path resistance of the device is less than 0.5 Ohms, while the end-of-life DC path resistance is greater than or equal to 1.5 Ohms. 

The thermal EMF value of the switch module is less than 10 microvolts. The NI780 Switc87-26h Module incorporates RF measurement capabilities, offering a bandwidth of up to 10 MHz at -3 dB and 23 degrees Celsius. The typical relay operation time is 1 ms, with a maximum of 3.1 ms. The module can simultaneously drive up to 82 relays. This device is not recommended for 2-wire resistance measurements. The module's switching power is limited by the maximum switching current and voltage, and must not exceed 60 W or 62.5 VA.