Channel-to-channel isolation

National Instruments has added three channel-to-channel isolated digital I/O and timing boards to its PC hardware repertoire.

National Instruments has released three channel-to-channel isolated digital I/O and timing boards.

The PCI-6528 and CompactPCI/PXI-6528 digital I/O devices feature channel-to-channel isolation, up to 60 VDC range on both inputs and outputs, 5V logic thresholds and isolated input/output to the PXI trigger bus (RTSI). The boards include programmable power-up states, digital I/O watchdogs, change detection and programmable input filters. Engineers can use these features for the safe operation of potentially dangerous actuators such as industrial pumps, valves and motors.

The PCI-6624 counter/timer board also offers channel-to-channel isolation and extended voltage ranges, which make it suitable for connecting directly to high-voltage industrial devices at different ground potentials. The board features a 48 VDC range and 5 V logic thresholds, as well as isolation to protect the electronics from transient voltage spikes. Isolation also provides greater common-mode noise rejection in electrically noisy environments containing machinery and inductive loads. These features are useful for frequency/period measurements and pulse-train/pulse-width module signal generation applications in systems with digital sensors, valves, solenoids, heaters and relays.

Each new device offers a fully software-configurable, jumperless setup and works with new NI-DAQmx software technology, which includes automatic code generation for creating applications in NI LabVIEW 7 Express, C, and Microsoft Visual Basic .NET and C#.

Engineers take measurements by using NI DAQ Assistant to guide them on how to acquire data without requiring any programming. NI-DAQmx also offers multithreading streaming technology as well as other advanced features including automatic timing, triggering and synchronisation.