Isolated measurements system enhanced with higher input impedance

18th May 2017
Source: Tektronix
Posted By : Mick Elliott
Isolated measurements system enhanced with higher input impedance

The IsoVu portfolio at Tektronix has been strengthened with new products offering a large differential voltage range and a higher input impedance. Featuring six new models, the IsoVu family portfolio now includes products with both large differential and common mode voltage ranges.

Users can now accurately measure a wide range of differential signals (5mV to > 1,000V) from DC to 800MHz in the presence of large common mode voltages up to 60kV.

The new IsoVu products also include high input impedance. The differential input resistance is up to 40MΩ and the differential input capacitance can be as low as 2pF. 

A large input impedance allows users to make measurements anywhere in their circuit without concerns about loading the signal under test.

The combination of large differential voltage and high input impedance allows designers to completely characterise their systems and eliminates the need for conventional probes tied back to ground through the scope. 

New IsoVu models with these capabilities are available with 200MHz, 500MHz, 800MHz bandwidths with either 3-meter or 10-meter fibre optic cable lengths.

The 10-meter cable option offers the same performance specifications as the 3-meter option and allows users to move their test system away from the interference and radiated emissions of the device under test.

The previous 1GHz model continues to be available.


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