The 14-Bit PCI66-14HSAI4 analog input board samples and digitizes as many as four analog input channels simultaneously at sustainable aggregate rates up to 100 million conversions per second. Each input channel implements a dedicated 14-Bit ADC for data conversion, and the resulting 14-bit sampled data is available to the PCI bus through a 1-MByte FIFO buffer. The 32- Bit local data path supports full D32 local-bus data packing, and data throughput is further enhanced with 66MHz PCI support. The sample clock can be generated from an internal rate generator or by external hardware, and multiple boards can be operated synchronously. Pretrigger and Sync-on-Level oscilloscope burst-triggering functions are supported. All operational parameters are software configurable.

Input ranges are software-selectable as ±2.5V, ±1.25V or ±0.625V for the standard Wideband input configuration. Input range options also include a High-Level configuration with selectable ranges of ±10V, ±5V or ±2.5V, and a Transformer-Coupled configuration with 2Vp-p and 1Vp-p ranges. Wideband and Hi-Level inputs are DC-coupled; Transformer-Coupled inputs are AC-coupled. The analog inputs can be jumper-configured as either differential or single-ended.

For the Wideband and High-Level input configurations, on-demand autocalibration determines offset and gain correction values for each input channel, and applies the corrections subsequently during acquisition. A selftest switching network routes calibration reference signals to each channel through internal selftest switches, and permits board integrity to be verified by the host.