Specifications -

THE PICOSCOPE 4444 : A NEW STANDARD IN DIFFERENTIAL MEASUREMENT:

• 4 true differential inputs o Flexible 12- or 14-bit resolution
• 20 MHz bandwidth o Up to 400 MS/s sampling rate
• 256 MS capture memory
• High common-mode rejection ratio
• Balanced high-impedance inputs for a low circuit load
• Intelligent probe interface o Measure differential signals with a single channel
• Measure non-ground-referenced signals
• Reject common-mode voltages in electronic and biomedical applications
• Safely probe single and 3-phase voltages with 1000 V CAT III probes
• Measure power drawn by mobile and IoT devices
• Choice of accessories for sensitive low-level, general electronic and 1000 V CAT III applications With four true differential inputs, 12- to 14-bit resolution and wide differential and common-mode voltage ranges, the PicoScope 4444 and its accessories offer accurate and detailed measurement for a multitude of applications. HIGH-END OSCILLOSCOPE At the heart of every PicoScope 4444 is an advanced oscilloscope that offers everything you would expect and much more including:
• 10 000 waveform circular buffer o Up to 100 000 waveforms per second update rate
• Serial bus decoding
• Mask limit testing
• Advanced math and filtering
• Measurements with statistics
• Advanced digital triggering
• USB 3.0 connected and powered INTELLIGENT DIFFERENTIAL INPUT

With four true differential inputs, 12- to 14-bit resolution and wide differential and common-mode voltage ranges, the PicoScope 4444 and its accessories offer accurate and detailed measurement for a multitude of applications

HIGH-END OSCILLOSCOPE

At the heart of every PicoScope 4444 is an advanced oscilloscope that offers everything you would expect and much more including: o 10 000 waveform circular buffer o Up to 100 000 waveforms per second update rate o Serial bus decoding o Mask limit testing o Advanced math and filtering o Measurements with statistics o Advanced digital triggering o USB 3.0 connected and powered

INTELLIGENT DIFFERENTIAL INPUTS

With a traditional oscilloscope probe, single-ended measurements are made between a highimpedance input and a low-impedance ground. With a differential oscilloscope, measurements are made between two high-impedance inputs, allowing measurements to be made across components and test points where neither side is grounded. Differential inputs also reject common-mode noise: noise picked up equally on both high-impedance inputs is rejected. Each of the four input channels on the PicoScope 4444 features an intelligent probe interface that detects and identifies compatible probes, and powers them where necessary. Each channel can have its own choice of voltage or current probe. Non-attenuating probes allow high-resolution, low-noise measurement of signals ranging from millivolts to ±50 V. Attenuating probes allow signals up to 1000 V CAT III to be measured. Current probes are available for currents up to 2000 A.

Why use the Picoscope 4444 Differential Oscilloscope ?

There are, of course, plenty of differential probes available, all with similar inconveniences: bulky interface boxes, missing or flat batteries, snaking power leads... The PicoScope 4444 uses specially designed passive voltage probes that have smaller and lighter (or no) interface boxes. The PicoScope 4444 has high resolution and deep memory and lets you make multiple differential measurement at the same time, while never occupying more than one power socket. Its intelligent probe interface automatically configures the PicoScope display to your probes, so you don’t have to.

True Differential Measurement in high Resolution

The PicoScope 4444’s four D9 inputs allow you to make true differential measurements. The maximum input range at full scale is ±50 V (±1000 V using the PicoConnect 442 1000 V CAT III 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. The PicoScope 2208B has greater bandwidth and a faster sampling rate than the PicoScope 4444, but fails to resolve the fine detail of the signal. The 12-bit resolution of the PicoScope 4444 offers 16 times as much vertical detail, and its deeper capture memory of 256 MS gives it greater horizontal resolution, too.

Probes & Accessories

1:1 differential probes

With most oscilloscopes, just connecting to the signal of interest can be very frustrating when one of the connection points has to be grounded. With the PicoConnect 441 1:1 differential voltage probe, the PicoScope 4444 high resolution differential oscilloscope allows the freedom to connect to and visualize signals that are off-limits to a grounded-input oscilloscope. Connect directly to current-sensing resistors and differential signals, or across non-grounded components in a signal path. The PicoConnect 441 probe does not attenuate your signal and is well suited to numerous electronics applications, as well as biomedical and other scientific research, as it allows highspeed high-resolution measurements on signals between ±10 mV and ±50 V in the presence of common-mode voltages and noise.

1000 V CAT III differential probes

Testing and characterization of power supplies can present the oscilloscope user with many challenges, such as hazardous voltages (often floating without reference to ground), feedback circuitry with electrical isolation, and a wide range of signal levels. One wrong connection of a ground lead and sparks can fly! Using the PicoConnect 442 1000 V CAT III differential voltage probe with the PicoScope 4444, you can easily connect to and visualize the wide range of signals that need to be characterized. The PicoConnect 442 probe has a 25:1 attenuation ratio and is suitable for testing in a range of applications, including distribution boards, circuit breakers, junction boxes, switches, fixed socket outlets and industrial equipment such as permanently connected stationary motors.