USA USB6525 Data Acquisition Card with SolidState Relays, 8 Digital Inputs & Counter, Isolated per Channel, Part No.77964001

# NI USB-6525 (English Technical Specification) NI USB6525 features 8 solidstate relays, 8 digital inputs (DI), an onboard counter and channeltochannel isolation. It is equipped with eight 60 VDC/30 Vrms, 500 mA solidstate relays plus 8 channels of ±60 VDC digital inputs, alongside one 32bit, 5 kHz counter and 60 VDC channeltochannel isolation. Screw terminal connectors and builtin antistress reinforcement are integrated into the hardware. The industrial feature set includes change detection, powerup state configuration, programmable input filters and watchdog timer. NIDAQmx driver software is supplied to optimize productivity and device performance. The NI USB6525 is a buspowered USB DAQ module with eight normally open solidstate relay outputs, rated to switch up to 60 VDC/30 Vrms voltage and 500 mA per channel. These solidstate relay outputs are ideal for controlling pumps, valves, motors and diverse industrial actuators. The unit also offers 8 channels of ±60 VDC galvanically isolated digital inputs for acquiring signals from industrial digital sensors. Any digital input channel can be configured as a 5 kHz, 32bit counter to tally digital pulses as well as measure frequency and pulse width. Channeltochannel isolation eliminates ground loops and safeguards against electrical noise and transient voltage spikes from external signals. Builtin screw terminals plus integrated antideformation reinforcement enhance installation convenience and longterm operational reliability of the USB6525. ## Industrial Feature Set NI industrial digital I/O hardware is engineered for robust reliability to automate even the most demanding industrial applications. Programmable powerup states ensure safe operation when interfacing with pumps, valves, motors and external relays. The digital I/O watchdog timer identifies PC or application crashes to enable safe system recovery upon failure. Change detection triggers application reads whenever digital state transitions occur to minimize host processor overhead. Userconfigurable input filters suppress glitches, voltage spikes and unwanted electrical noise. ## Driver Software The USB6525 operates with NIDAQmx driver software to deliver a streamlined, userfriendly programming interface. It is fully compatible with NI LabVIEW, NI LabWindows/CVI, ANSI C/C++, C#, Visual Basic .NET and Visual Basic 6.0, and runs on Windows operating systems. ### Product Header: NI USB-6525 Multifunction Data Acquisition Card *(Duplicated paragraph omitted in formal listing; kept full translation as requested)* The NI USB6525 is a buspowered USB multifunction DAQ device with eight normally open solidstate relay outputs capable of switching 60 VDC/30 Vrms and 500 mA per channel. Its solidstate relays are widely used to drive pumps, valves, motors and other industrial actuators. In addition, the card provides eight galvanically isolated ±60 VDC digital input channels for industrial sensor signal acquisition, with any DI channel configurable as a 32bit, 5 kHz counter for pulse counting, frequency and pulse-width measurement.