PQ167 PS4444 1000 V CAT III mains current & voltage measurement kit

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
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

Typical applications

Non-ground-referenced measurements
Safe probing of single-phase and three-phase voltages and currents
Measuring power drawn by mobile and IoT devices
Mains quality testing
SMPS design
Hybrid and electric vehicle design
Motor drives and inverters
Biomedical electronics
Measuring differential signals (CAN, balanced audio) with a single channel

Intelligent differential inputs

With a traditional oscilloscope probe, single-ended measurements are made between a high-impedance 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.

PicoConnect 441: Measure from millivolts to ±50 V

The PicoConnect 441 differential voltage probes are suitable for voltages up to ±50 V (for higher voltages see the PicoConnect 442). The probes are fitted with industry-standard 4 mm connectors and supplied with detachable sprung hook probe tips. Other 4 mm accessories such as multimeter probes and crocodile clips are available separately.

As well as measuring non-grounded voltage signals, differential inputs are ideal for measuring current through sensing resistors. As neither side needs to be grounded, they can make high-side measurements. The sensitive input ranges, high resolution and fast sampling are ideal for measuring fast-changing currents in battery-powered and IoT devices.

Human heartbeat captured on PicoScope 4444

The high-impedance, high-resolution inputs are also suited to biological and scientific research, as they allow measurements on low-level millivolt signals (2 mV/div at 12 bits) in the presence of common-mode noise without the need for expensive differential preamplifiers or differential oscilloscope probes. The probe is constructed with twinax cable (twisted-pair inner conductors with an outer shield) to ensure a high common-mode rejection ratio (CMRR). The outer screen of the cable can optionally be connected to a signal ground to improve rejection of common mode voltages and currents.

The PicoConnect 441 probes are also ideal for measuring differential signal sources such as CAN bus and balanced audio on a single channel, and can be used to directly measure from bridge-type sensors such as load cells and pressure sensors.

PicoConnect 442: 1000 V CAT III probes

The PicoConnect 442 is an attenuating differential voltage probe that increases the input range to 1000 V to allow the safe and cost-effective measurement of single-phase, three-phase and other signals, such as those found in motor drives and inverters.

The PicoConnect 442 probe requires no power supply or batteries. This makes it ideal for mains quality measurement and other long-term measurements.

The differential inputs of the PicoScope 4444 allow each channel to measure signals with different common-mode voltages. As an example, consider the battery pack in an electric vehicle. You can measure across the whole pack using one channel set to an input range of ±500 V, and at the same time set the other channels to ±5 V to measure across individual cells. This arrangement allows you to take advantage of the full resolution of the oscilloscope

More Information

Specifications

Vertical
	Oscilloscope specifications	Specifications with PicoConnect 442 1000 V CAT III probe
Input channels	4 channels	4 channels
Analog bandwidth (–3 dB)	20 MHz with D9 to BNC adaptors 15 MHz with PicoConnect 441 probe	10 MHz
Rise time (calculated)	17.5 ns with D9 to BNC adaptors 23 ns with PicoConnect 441 probe	35 ns
Bandwidth limit	100 kHz or 1 MHz (selectable)	100 kHz or 1 MHz (selectable)
Vertical resolution, 12-bit mode	12 bits on most input ranges 11 bits on ±10 mV range	12 bits
Vertical resolution, 14-bit mode	14 bits on most input ranges 13 bits on ±20 mV range 12 bits on ±10 mV range	14 bits
Enhanced vertical resolution 12-bit mode	16 bits on most input ranges 15 bits on ±10 mV range	16 bits
Enhanced vertical resolution 14-bit mode	18 bits on most input ranges 17 bits on ±20 mV range 16 bits on ±10 mV range	18 bits
Input type	Differential 9-pin D-subminiature, female	Differential 9-pin D-subminiature, female
Input characteristics	1 MΩ ±1%, in parallel with 17.5 pF ±1 pF (each differential input to ground). < 1 pF difference between ranges.	16.7 MΩ ±1%, in parallel with 9.3 pF ±1 pF (each differential input to ground)
Input coupling	AC/DC	AC/DC
Input sensitivity (10 vertical divisions)	2 mV/div to 10 V/div	±0.5 V/div to ±200 V/div
Input ranges (full scale)	±10 mV, ±20 mV, ±50 mV, ±100 mV, ±200 mV, ±500 mV, ±1 V, ±2 V, ±5 V, ±10 V, ±20 V, ±50 V	±2.5 V, ±5 V, ±12.5 V, ±25 V, ±50 V, ±125 V, ±250 V, ±500 V, ±1000 V
Input common mode range	±5 V on ±10 mV to ±500 mV ranges ±50 V on ±1 V to ±50 V ranges	±125 V on ±2.5 V to ±12.5 V ranges ±1000 V on ±25 V to ±1000 V ranges
DC accuracy (DC to 10 kHz)	±1% of full scale ±500 µV	±3% of full scale ±12.5 mV
Analog offset range	±250 mV on ±10 mV to ±500 mV ranges ±2.5 V on ±1 V to ±5 V ranges ±25 V on ±10 V to ±50 V ranges	±6.25 V on ±2.5 V to ±12.5 V ranges ±62.5 V on ±25 V to ±125 V ranges ±625 V on ±250 V to ±1000 V ranges
Analog offset accuracy	1% of offset setting in addition to basic DC accuracy	1% of offset setting in addition to basic DC accuracy
Overvoltage protection	±100 V DC + AC peak (any differential input to ground) ±100 V DC + AC peak (between differential inputs)	CAT III 1000V

Horizontal
Maximum sampling rate (real-time) 12-bit mode	1 channel: 400 MS/s 2 channels: 200 MS/s 3 or 4 channels: 100 MS/s
Maximum sampling rate (real time) 14-bit mode	50 MS/s
Maximum sampling rate (USB streaming)	16.67 MS/s
Shortest real-time collection time, 12-bit mode	50 ns (5 ns/div)
Shortest real-time collection time, 14-bit mode	200 ns (20 ns/div)
Longest real-time collection time	50000 s (5000 s/div)
Capture memory (block mode)	256 MS shared between active channels
Capture memory (USB streaming mode)	100 MS (shared between active channels)
Waveform buffers	10000
Collection time accuracy	±50 ppm (5 ppm/year aging)
Sample jitter	3 ps RMS typical
ADC sampling	Simultaneous sampling on all enabled channels

Dynamic performance (typical)
	Oscilloscope specifications	Specifications with PicoConnect 442 1000 V CAT III probe
Crosstalk	2000:1 (DC to 20 MHz)	2000:1 (DC to 10 MHz)
Harmonic distortion at 100 kHz, 90% FSD	< –70 dB on ±50 mV ranges and higher < –60 dB on ±10 mV and ±20 mV ranges	< –70 dB
SFDR	> 70 dB	> 70 dB
ADC ENOB, 12-bit mode	10.8 bits	10.8 bits
ADC ENOB, 14-bit mode	11.8 bits	11.8 bits
Noise	< 180 µV RMS on ±10 mV range	< 5 mV RMS on ±2.5 V range
Bandwidth flatness	(+0.1 dB, –3 dB) DC to full bandwidth	(+0.1 dB, –3 dB) DC to full bandwidth
Common mode rejection ratio	60 dB typical, DC to 1 MHz	55 dB typical, DC to 1 MHz

Triggering
Source	Any input channel
Trigger modes	None, auto, repeat, single, rapid
Advanced triggers	Edge, window, pulse width, window pulse width, dropout, window dropout, interval, runt, logic
Trigger sensitivity	Digital triggering provides up to 1 LSB accuracy up to full bandwidth
Maximum pre-trigger	Up to 100% of capture size
Trigger time-delay range	Up to 4 billion samples
Trigger rearm time in rapid trigger mode	< 2 µs on fastest timebase
Max. waveforms in rapid trigger mode	10000 waveforms in a 12 ms burst

Probe compensation pins
Output level	4 V peak
Output impedance	610 Ω
Output waveforms	Square wave
Output frequency	1 kHz
Overvoltage protection	±10 V

Spectrum analyzer
Frequency range	DC to analog bandwidth of oscilloscope
Display modes	Magnitude, average, peak hold
Windowing functions	Rectangular, Gaussian, triangular, Blackman, Blackman-Harris, Hamming, Hann, flat-top
Number of FFT points	Selectable from 128 to half available buffer memory in powers of 2, up to a maximum of 1 048 576 points

Math channels
General functions	−x, x+y, x−y, x*y, x/y, x^y, sqrt, exp, ln, log, abs, norm, sign, sin, cos, tan, arcsin, arccos, arctan, sinh, cosh, tanh, derivative, integral, delay
Filter functions	Lowpass, highpass, bandstop, bandpass
Graphing functions	Frequency, duty cycle
Multi-waveform functions	Min, max, average, peak
Operands	Input channels, reference waveforms, time, constants, pi

Automatic measurements
Scope mode	AC RMS, true RMS, frequency, cycle time, duty cycle, DC average, edge count, falling edge count, rising edge count, falling rate, rising rate, low pulse width, high pulse width, fall time, rise time, minimum, maximum, peak to peak
Spectrum mode	Frequency at peak, amplitude at peak, average amplitude at peak, total power, THD %, THD dB, THD+N, SFDR, SINAD, SNR, IMD
Statistics	Minimum, maximum, average and standard deviation

Serial decoding
Protocols	1-Wire, ARINC 429, CAN, CAN FD, DALI, DCC, DMX512, Ethernet 10Base-T, FlexRay, I²C, I²S, LIN, Manchester, MODBUS, PS/2, SENT, SPI, UART (RS-232 / RS-422 / RS-485), USB 1.0/1.1

Mask limit testing
Mask generation	Numeric (automatic) or graphical (manual)
Statistics	Pass/fail, failure count, total count
Available actions on mask fail	Beep, play sound, stop capture, save waveform, trigger signal generator / AWG, run executable

Display
Interpolation	Linear or sin(x)/x
Persistence modes	Digital color, analog intensity, custom, fast or none

SDK/API*
Supplied drivers	32- and 64-bit drivers for Windows 7, 8 and 10 Linux drivers macOS drivers
Example code	C, C#, Excel VBA, VB.NET, LabVIEW, MATLAB and Python
Maximum sampling rate (USB streaming)	50 MS/s
Capture memory (USB streaming)	Up to available PC memory
Segmented memory buffers	> 1 million

Specifications for users writing their own software. See "Oscilloscope – horizontal" above for specifications when using PicoScope 6 software.

Software
Windows software	PicoScope for Windows Software development kit (SDK) Compatible with Windows 7, 8 and 10
macOS software	PicoScope for macOS (beta: feature list) Software development kit (SDK) OS versions: see release notes
Linux software	PicoScope for Linux (beta: feature list) Software development kit (SDK) See Linux Software & Drivers for details of supported distributions
Languages	Chinese (simplified), Chinese (traditional), Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Romanian, Russian, Spanish, Swedish, Turkish

General
Package contents	PicoScope 4444 precision differential USB oscilloscope Quick Start Guide Universal mains power supply USB 3.0 cable 1.8 m Other accessories as requested at time of ordering
PC connectivity	USB 3.0, compatible with USB 2.0, USB 1.1
Power requirements	USB port or external DC PSU, depending on connected accessories
Dimensions	190 x 170 x 40 mm including connectors
Weight	< 0.5 kg
Temperature range (operating)	0 °C to 45 °C
Temperature range, operating, for quoted accuracy	15 °C to 30 °C
Temperature range (storage)	–20 °C to 60 °C
Humidity range (operating)	5% to 80% RH non-condensing
Humidity range (storage)	5% to 95% RH non-condensing
Altitude range	Up to 2000 m
Pollution degree	Pollution degree 2
Safety approvals	Designed to EN 61010-1:2010
EMC approvals	Tested to EN 61326-1:2013 and FCC Part 15 Subpart B
Environmental approvals	RoHS and WEEE compliant
PC requirements	Processor, memory and disk space: as required by the operating system Port(s): USB 3.0 or USB 2.0
Languages supported	Simplified Chinese, Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Romanian, Russian, Spanish, Swedish, Turkish
Warranty	5 years

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PicoScope-4444-PQ167

PQ167 PS4444 1000 V CAT III mains current & voltage measurement kit

Key features

PQ167 PS4444 1000 V CAT III mains current & voltage measurement kit

High-end oscilloscope

Typical applications

Intelligent differential inputs

PicoConnect 441: Measure from millivolts to ±50 V

PicoConnect 442: 1000 V CAT III probes