xDAP 7420 Data Acquisition System
The xDAP 7420 data acquisition system has a high-speed sampling mode with a sample rate double that of its predecessor, xDAP 7410. This system is CE compliant and provides eight parallel 16-bit analog-to-digital converter channels. The aggregate sample transfer rate limit is eight million samples per second, with transfers to the host continuously sustainable across the USB interface at this rate. It features an embedded 2.0 GHz Celeron processor that manages all of the real-time aspects of acquisition hardware management and data buffering. All of this, plus higher level data pre-processing and transfer management, is controlled by the embedded DAPL real-time operating system that runs on every Data Acquisition Processor (DAP) system. On the host side, the software uses the same “channel architecture” driver and server software. The two million samples per second rate and eight million samples per second composite transfer limit mean that a maximum of four channels can be captured at the absolute maximum rate limit. The “dual mode sampling” capabilities allow use of the extra capacity for other channels at a reduced rate.