High-resolution Differential USB Oscilloscope

True differential measurements in high resolution

The PicoScope 4444’s four inputs allow you to make true differential measurements. The maximum input range at full scale is ±50 V (±1000 V CAT III using the PicoConnect 442 probe), and the maximum common-mode range is also ±50 V (also ±1000 V with the PicoConnect 442 probe). You can set the scope to measure at resolutions of 12 or 14 bits, far better than the 8-bit resolution typical of many oscilloscopes. The deep capture memory (up to 256 million samples shared by the active channels) is another advantage, allowing you to carry out long captures without lowering the sampling rate.

Power quality - spikes, noise, dips and interruptions

Disturbances on the mains supply can cause a variety of problems ranging from computers crashing to, in more extreme cases, equipment damage. The PicoScope 4444 is ideal for the long-term monitoring of single-phase and three-phase systems to spot and record any variation from the norm.
The waveform opposite shows the voltage of a three-phase supply (plus the neutral return current). If the voltage waveform crosses into the shaded area, the alarm function beeps and the waveform is stored for later review. Tests can be run for days or even weeks and the resulting high-resolution waveforms help identify whether mains quality is a factor.