The National Instruments 785816-01, also known as the USB-6349, is a robust USB multifunction I/O device engineered for diverse data acquisition and control applications. This advanced data acquisition system features 32 differential analog input channels with a 16-bit resolution and supports a maximum simultaneous sampling rate of 500 kS/s across all channels. The device incorporates high precision performance without missing codes and offers input coupling in DC with selectable voltage ranges of ± 1 V, ± 2 V, ± 5 V, and ± 10 V. Designed for reliability, it ensures high input impedance along with overvoltage protection.

In addition to its extensive analog input capabilities, the 785816-01 is equipped with two analog output channels, which provide a 16-bit resolution and a maximum update rate of 900 kS/s for single-channel operation, and 840 kS/s when both channels are used simultaneously. The analog outputs are configured for a range of ± 10 V and feature low output impedance of 0.2 Ω, facilitating efficient real-time signal generation through an onboard FIFO capable of storing up to 8,191 samples.

The digital I/O capabilities of the 785816-01 include 24 individual channels that can be configured as either inputs or outputs. Each channel can withstand input voltages up to ± 20 V, ensuring safety in high-voltage environments. Enhanced digital signal processing is facilitated through digital line filters and programmable debounce settings, which effectively manage noisy signals.

Furthermore, the device features four 32-bit counters/timers ideal for frequency measurement, encoder positioning, and pulse generation, capable of executing tasks like pulse width modulation and frequency division. With built-in Phase-Locked Loop (PLL) technology for precise timing synchronization, it supports both internal and external clock configurations, offering flexibility for various timing applications. The 785816-01 utilizes NI-STC3 timing and synchronization technology and is compatible with NI-DAQmx driver software, which simplifies calibration, measurement, and setup processes, making it suitable for both basic data logging and complex automation and control scenarios.

Compact and lightweight, the 785816-01 measures 26.4 cm x 17.3 cm x 3.6 cm (10.39 in. x 6.81 in. x 1.42 in.) and weighs 1.45 kg (3 lb 3 oz). It comes with a warranty period of 2 to 3 years, ensuring long-term reliability and performance for industrial applications.