Tektronix has just announced a new range of arbitrary/function generators. Dubbed the AFG3000 Series, the line-up includes six models, ranging from a basic single-channel model to dual-channel models with high bandwidths and fast sample rates. All instruments can generate function (sine, ramp, etc), pulse and arbitrary waveforms and are backed by a stable, low-drift (±1ppm per year) timebase.

At the bottom end of the range, the AFG3021 can generate sinewaves at up to 25MHz and arbitrary/pulse waveforms to 12.5MHz. The arbitrary waveform sample rate is 250MS/s, with the ability to store four 64kb waveforms on-board. The other major difference with this lower-cost model is that it includes a monochrome rather than colour LCD.

We test-drove the low-end AFG3022 model, which is visually identical to the AFG3252 pictured here. It can generate sinewaves at up to 25MHz and pulse/square/arbitrary waveforms to 12.5MHz. The arbitrary waveform sample rate is 250MS/s, with internal memory space for four 64kbyte waveforms.

The AFG3252 dual-channel model tops the range, with 240MHz sinewave generation and a 120MHz arbitrary/pulse waveform capability. Naturally, it supports a higher sampling rate of 2GS/s and has enough memory for four 128kb waveforms.

All models boast a frequency resolution of 1μHz (12 digits) and a vertical resolution of 14 bits.

Other important features across the series include amplitude, phase and frequency-modulated signal generation, as well as linear/log sweeps and bursts. Also of note is the pulse generator’s independently programmable rise and fall times – a feature previously unavailable at this price range, according to Tektronix.

The ability to independently program waveform and frequency settings for each channel on dual-channel models highlights the flexibility of these instruments. Independent channel control has allowed Tek engineers to add other niceties too – like the ability to tweak phase relationship between channels!