Several signal generators are available for 3U PXI systems including two arbitrary waveform generators and a programmable DC source.
The ZT530 is a three-in-one modular instrument that provides a high-performance arbitrary waveform generator, a function generator with built-in waveforms, and a high-speed digital pattern generator.
The GX1200 is a low cost single channel waveform generator, when high signal bandwidths are not required
The GX1838 is effectively a programmable power supply with eight outputs.