Info Day - Introducing the
Compact-Q DEER Spectrometer for
Pulsed EPR Distance Measurements 

The Compact-Q DEER is a state-of-the-art pulsed EPR spectrometer that offers a versatile platform for pulsed EPR spectroscopy. Featuring modern microwave technology, high-resolution AWG and IQ-mixer based pulse generation architecture, and digital signal processing, it is optimized for EPR based distance measurements (e.g. PELDOR/DEER) while supporting all pulsed EPR experiments. 

We will showcase the Compact-Q DEER spectrometer, equipped with a modern tuning scheme using a chirp pulse, reflected power monitor and automated iris control. The system operates at an intermediate frequency of 500 MHz, and the signal is processed using modern digital signal processing (DSP) techniques.

Two-pulse echo decay and field-swept echo experiments will be performed, illustrating ease of use of the instrument. Finally, we will demonstrate DEER distance measurements on a 100 µM nitroxide biradical sample, showing parameter optimization and practical data collection. This session will highlight how the Compact-Q enables high-performance pulsed EPR measurements with an accessible, modern workflow. 

Tuesday, 9 September 2025

11 AM EDT | 5 PM CEST

This webinar will provide an overview of using the Compact-Q DEER spectrometer for pulsed EPR experiments. We will introduce the acquisition software for experiment setup and data collection, demonstrating its intuitive workflow. Additionally, we will show how to easily set up and run a DEER measurement from tuning to acquisition. 

Versatility, high-performance and user-friendly operation of the Compact-Q DEER spectrometer will be highlighted along with: 

• Resonator tuning scheme using automated iris control 
• AWG, digital down conversion and FIR filtering 
• Variable gain and bypass-able video amplifiers 
• Setting up pulsed EPR experiments, such as a Hahn echo decay, an echo-detected field sweep, and DEER 
• Optimizing pulse settings in an efficient manner 
• Acquiring high-quality data 

• Undergraduate and graduate students in chemistry, biochemistry, physics, and related fields 
• Early-career researchers, postdoctoral fellows, and instrument facility managers new to EPR spectroscopy 
• Professors and instructors teaching EPR spectroscopy or related courses 
• Industry professionals, scientists, and engineers in chemical, pharmaceutical, and materials science industries