UHF-BOX Product Highlights

Don't Miss a Pulse

Zurich Instruments promises exceptional features and an improved user experience by offering the most advanced signal acquisition tools dedicated to physicists and engineers. Here are a selection of UHF-BOX Boxcar Averager highlights.

Measure 1000x Faster

A boxcar averager implemented with digital technology allows acquisition and processing of data with no gaps as there is no integrator that needs to be discharged. Therefore the speed limitation that afflicted analog boxcars no longer applies. It is possible to average pulse after pulse without a dead time up to repetition rates of 600 MHz. By not missing any signal pulse, certain applications will benefit from a measurement time reduction by a factor of up to 1000 when compared to conventional analog instruments. The granularity of the gating window determined by the inverse of the 1.8 GSa/s sampling rate, i.e. multiples of 556 ps.

More Applications - Baseline Suppression
and Arithmetic Unit

Each Boxcar unit is equipped with a baseline gate to perform a measurement with baseline suppression (subtraction of the background noise, measured in regions of the period without signal, from the boxcar measurement) or other advanced measurements like fully differential signal paths analysis. The flexibility provided is essential headroom to support more applications than with conventional analog boxcars.

The Arithmetic Units (AU), included in all UHFLI Lock-in Amplifiers, offer the capability to perform arithmetic operations using the results from the two boxcar units as operands and outputting the result; this opens even more advanced measurement possibilities.

Ease of Use - Periodic Waveform Analyzer

It takes no more than pressing one button to display the periodic waveform of the signal of interest, for instance the transients of a decay process. The real shape of the pulse is reconstructed by means of efficient time binning, which is a process that does not require any external equipment. The user can therefore comfortably define the boxcar settings inside the user interface without needing an additional sampling scope. See periodic waveform analyzer.

Measure with Two Timebases

An example of an experiment with two timebases is, for instance, when a slower modulation is superimposed on a fast pulsed laser. Traditionally the measurement of such signals would involve complex sweeping of trigger points and post-processing of data. The multi-channel boxcar solves this issue elegantly and performs the data deconvolution in real-time, associating the measurement result of the fast timebase to the time bins according to the slow timebase. This process provides immediate feedback on the amplitudes in a graphical display. See multi-channel boxcar.

Additional Highlights

Similarly to lock-in amplifiers, high performance PLLs track the periodicity of signal of interest and provide optimal signal recovery for an improved signal-to-noise ratio of the boxcar averaging. For applications with a fast variating repetition rate, configurable PLLs provide improved control of the dynamics.

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