Many AWG applications require sinusoidal signals with shaped pulse envelopes. The UHFAWG features amplitude modulation, thus offering independent control over carrier and envelope. Internal oscillators ensure phase coherence during long pulse sequences independently from the envelope signal generated by the AWG engine. Combining the UHFAWG with the UHFLI Lock-in Amplifier gives access to pulsed modulation and fast demodulation within the same instrument – a powerful solution for pulsed phase-coherent measurements that is unique to Zurich Instruments.
The diagram below illustrates the possibilities for output generation. The basic version of the UHFAWG offers the choice between direct output and amplitude modulation of 1 oscillator per signal output. Adding the UHF-MF Multi-Frequency option extends the modulation capabilities of the UHFAWG in the form of an upgrade to 4 oscillators per channel. Further, the UHF-MF output adder makes it possible to combine the 2 AWG and pure oscillator signals on a single signal output. Multiple oscillator signals can be added and modulated not only simultaneously but also sequentially by using fast oscillator switching between pulses. This unique feature enables multi-frequency techniques for pulsed laser spectroscopy, NEMS/MEMS, and more.