Yes, all Berkeley Nucleonics arbitrary waveform generators can produce triangle waveforms, along with virtually any other waveform shape. As the name implies, an arbitrary waveform generator (AWG) creates user-defined waveforms point-by-point from memory, so triangle, sawtooth, sine, square, pulse, Gaussian, and custom waveforms are all standard capabilities. The BNC AWG family — including the Models 670C, 675, 685, 685C, and 686 — provides built-in standard waveform templates including triangle waves, plus full arbitrary waveform definition for custom signal shapes.