National Instruments 782351-01

The National Instruments PCIe-6612 Counter/Timer Device, identified by part number 782351-01, is a versatile and high-performance control solution featuring 40 digital I/O lines that can be configured for input or output to prevent undefined floating states through an integrated 51 kΩ pull-down resistor. The device supports input voltage levels between -3 V and +8 V, with an output impedance of 75 Ω. It includes eight 32-bit counters/timers capable of performing various counter measurements such as frequency, edge counting, pulse-width, and period measurements, in addition to position measurements using quadrature encoding (x1, x2, x4) with channel Z reloading. The PCIe-6612 offers internal timebases with fixed frequencies of 100 kHz, 20 MHz, or 100 MHz and supports external timebases ranging from 0 MHz to 25 MHz. Notably, each counter benefits from a FIFO buffer of 127 samples and is equipped with a scatter-gather DMA controller for efficient data transfer. Additionally, a frequency generator synchronized with the internal timebase frequencies enhances its functionality. Power consumption is rated at a maximum of 4.3 W at +3.3 V and 6.0 W at +12 V. The device features a standard height and half-length single-lane PCI Express interface, compatible with any PCI Express slot with at least one lane. Designed for indoor use, it operates within a temperature range of 0 °C to 55 °C and can handle relative humidity levels from 10% to 90% RH at altitudes of up to 2000 m. For storage, the unit can withstand temperatures from -40 °C to 71 °C at humidity levels between 5% and 95% RH. The PCIe-6612 complies with multiple safety standards, including IEC 61010-1 and UL 3111-1, ensuring its suitability for electrical measurement, control, and laboratory applications.