The Axon Digidata® 1440A Digitizer is a low-noise high-resolution 16-bit data acquisition system for electrophysiology recordings. It is self-contained and communicates with the host computer via a USB 2.0 interface for extremely easy installation and setup. Designed for fast results, the Digidata 1440A Digitizer comes with AxoScope software for Microsoft Windows OS and is ready to acquire data immediately after installation. Absolutely no programming is necessary. The Digidata 1440A Digitizer features a maximum sampling rate of 250 kHz per channel, with an outstanding total data throughput rate of 4 mega-samples per second. This enables you to capture even the fastest signals in the biorelevant frequency range. Both the inherent digitizer noise and channel crosstalk noise are rated at less than ±1 mV average p-p at 10 kHz, within a ±10 V input range, making the Digidata 1440A System one of the quietest digitizers on the market. For intuitive setup, the front panel is clearly laid out with sixteen analog input channels and four analog output channels, eight general digital outputs, one dedicated digital output to trigger devices such as oscilloscopes, as well as trigger inputs to start acquisition and to tag data. The back panel has four additional analog instrument telegraph inputs, as well as a DB-25 connector for the digital outputs.