National Instruments 781949-01 PXI Digital Waveform Instrument

The National Instruments 781949-01 PXI Digital Waveform Instrument is a crucial part of the PXIe-6556 Model series. This device is a digital waveform generator and analyzer made especially for DC parametric testing, characterisation, and interfacing. It enables high-speed digital waveform sampling at up to 200 MHz and is equipped with 24 single-ended digital pins. Its adaptability also includes allowing it to interface with user-programmable voltage levels to create customized testing setups.

The 781949-01 has cutting-edge features designed for extensive testing scenarios. It enables accurate parameter monitoring and control for every channel because to its per-pin parametric measurement unit (PPMU) capabilities. As a result, digital signals are accurately characterized and analyzed. The device's usefulness in demanding testing conditions is further increased by the addition of hardware comparison capabilities for bit-error testing.

A configuration for an active load is possible for the 781949-01. This characteristic allows for high-precision DC measurements when combined with external source-measure unit (SMU) connectivity, extending the application area to include parametric testing over a wide range of voltages and currents.

With per-channel control over timing, voltage levels, and direction, the gadget offers excellent programmability. Compatible with a range of testing configurations, it supports multiple signal types, such as ground-referenced, single-ended signals. With a resolution of up to 122 μV, programmable voltage levels enable precise control and flexible adaption to varying testing obligations.

In order to provide optimal signal integrity and compatibility with downstream components, the 781949-01 offers customizable drive voltage levels, swing, and impedance for digital generation channels. Safety features including output protection and software-selectable tristate control are included.

To enable precise signal capture and analysis, the digital acquisition channels are equipped with adjustable acquisition voltages and thresholds. The device accommodates different input needs by providing 50 Ω or high-impedance terminating options.

In addition, the channels for active loads provide accurate management of load attributes, such as commutating sink, source, and voltage of current. The 781949-01 lets you characterize the behavior of the device under test (DUT) in detail under various load circumstances. It has a large range of programmable levels and good accuracy.