PicoScope 4444®

See the difference: high-resolution differential USB oscilloscope

Flexible 12- or 14-bit resolution
20 MHz bandwidth
Up to 400 MS/s sampling rate
256 MS capture memory
Four true differential inputs
High common-mode rejection ratio
Intelligent probe interface
Choice of accessories for multiple applications
Low-level electronic and biomedical signal analysis
Mobile and IoT device design
General electronic test and measurement
1000 V CAT III voltage and current measurement

www.picotech.com

The PicoScope 4444 with PicoConnect® probes: a new standard in differential measurement
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 anddetailed measurement for a multitude of applications. The 9-pin D-type connectors provide a true differential probe interface, and also allow the PicoScope 6 software toautomatically identify the probe and select the appropriate display settings.

1:1 differential probes

1000 V CAT III 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-resolutiondifferential oscilloscope allows you the freedom to connect to and visualize signalsthat 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.

Testing and characterization of power supplies can present the oscilloscope user withmany challenges, such as hazardous voltages (often floating without reference toground), 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 441 probe does not attenuate your signal and is well suited tonumerous electronics applications, as well as biomedical and other scientific research,
as it allows high-speed high‑resolution measurements on signals between ±10 mV and±50 V in the presence of common-mode voltages and noise.

The PicoConnect 442 probe has a 25:1 attenuation ratio and is suitable for testing ina range of applications, including distribution boards, circuit breakers, junction boxes,
switches, fixed socket outlets and industrial equipment such as permanently connected
stationary motors.

Supplied with detachable black and red sprung hook probe tips.

Supplied with detachable shrouded black and red sprung hook probe tips.

Embedded system design and test

Power supply design and test

PicoScope 4444 differential oscilloscope

Why make differential measurements?
While you can make a wide variety of measurements with an ordinary ground-referenced scope, there are some circumstances where that just won’t work.

VSIG
VSIG

VSUM

VSUM
VCM

VCM
0V

0V

Common-mode voltages are unwanted signals that are applied equally to both measurement terminals in your probing system. The circuit above consists of a signal source (purple)
with AC and DC components producing a total output of VSIG, which we wish to measure. However, the circuit also contains an unwanted voltage source (green) that also has AC andDC components adding up to VCM, a common-mode voltage. This situation is quite common, for example when probing high-side drivers in amplifiers and power supplies.
As the diagram above shows, probing this circuit with a single-ended scope results in a distorted waveform (VSUM) on the display. We cannot simply connect the probe ground to
the negative terminal of VSIG, as that would short-circuit VCM to ground through the oscilloscope, possibly causing a circuit malfunction or damage to the instrument. We need ameasuring system that can safely detect VSIG and ignore VCM.
The solution, as shown below, is to connect a differential scope input across the positive and negative terminals of the signal source. The differential input does not measure VCM,
only VSIG, so VSIG is what you see on the oscilloscope display.

VDIF MAX

VCM MAX
VSIG

VSUM
VSIG
VCM
0V

VSUM

VDIF
0V

VCM
VDIF MINVCM MIN
Differential scopes can measure the AC or DC voltage between two points connected to the positive and negative leads, when neither of the points is grounded. This enables themto take measurements where single-ended scopes can’t, for example at voltages that are much higher than ground potential. The resulting measurements focus exclusively on thepotential difference between the probes.

PicoScope 4444 differential oscilloscope

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 measurements 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 measurements in high resolution
The PicoScope 4444’s four Pico 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 anotheradvantage, allowing you to carry out long captures without lowering the sampling rate.
The two images below show a sine wave with a sawtooth interference pattern, displayed on an 8-bit PicoScope 2208B (left) and a PicoScope 4444 in 12-bit mode (right). 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 PicoScope4444 offers 16 times as much vertical detail, and its deeper capture memory of 256 MS gives it greater horizontal resolution, too.

PicoScope 4444 differential oscilloscope

Deep memory
The PicoScope 4444 oscilloscope offers a large capture memory of 256 MS, allowing it to sustain high sampling rates across long timebases. Running at 12-bit resolution, it cansample at 400 MS/s all the way down to 50 ms/div giving a 500 ms total capture time.
Powerful tools are included to allow you to manage and examine all of this data. As well as functions such as mask limit testing and color persistence mode, the PicoScope 6
software enables you to zoom into your waveform by several million times. The Zoom Overview window allows you to easily control the size and location of the zoom area.
The image below shows how deep memory allows us to zoom in on an individual color burst in an NTSC signal, while preserving the detail of the signal.

Zoom Overview window

Zoomed area

Up to 10 000 waveforms can be
stored in the segmented waveform
buffer. The Buffer Overview
window then allows you to rewind
and review the history of yourwaveform.
You can also use it to view mask
limit test failures, making it far
easier to spot infrequent glitches.

When the trace length is set to be shorter than the scope’s memory, the
PicoScope 4444 will automatically configure the memory as a circular buffer, recording
recent waveforms for review. For example, if 1 million samples are captured, up to 250
waveforms will be stored in
12
3
4
247 248 249 250
oscilloscope memory. Tools
such as mask limit testing canthen be used to scan througheach waveform to identify
anomalies.

PicoScope 4444 differential oscilloscopeUnique intelligent probe interface

Signal integrity

When you connect any Pico Technology probe with D9 connection to the
PicoScope 4444, the PicoScope 6 software will detect, identify and, where
necessary, power it. This means you spend less time setting up and don’t
have to worry about battery packs or power supplies. The software automatically sets
up the display and controls to match your probe.

Careful front-end design and shielding reduces noise, crosstalk, and harmonic
distortion. Years of oscilloscope design experience can be seen in improved bandwidth
flatness, low distortion, and excellent pulse response. We are proud of the dynamic
performance of our products, and publish their specifications in detail.

A notification appears in the bottom right corner of the PicoScope display whenever
you connect or remove a probe.

The result is simple: when you probe a circuit, you can trust in the waveform you see on
the screen.

Excellent value and convenience
The PicoScope 4444 differential oscilloscopes and their accessories are highly cost-effective, compact andconvenient, especially compared to combining a traditional single-ended oscilloscope with the same numberof differential probes.

PicoScope 4444 differential oscilloscope

Oscilloscope kits
We and our distributors supply three preconfigured kits with everything you need to get started with differential measurement. Each kit includes a PicoScope 4444 high-resolutiondifferential oscilloscope and three differential voltage probes with Pico D9 connectors. The kits also come with a TA271 D9‑BNC adaptor, which lets you use traditional oscilloscope
voltage probes and current probes, to make single-ended measurements with a ground-referenced probe. Finally, all three kits are delivered in a sturdy carry case, as shown below.
These and a range of other accessories are also available separately.

Extra low voltage differential kit•••

PicoScope 4444 differential oscilloscope
3× PicoConnect 441 1:1 passive differential voltage
probes
1× TA271 single-ended D9-BNC adaptor

The extra low voltage kit is ideal for use in non-groundreferenced measurements, including lower-amplitude,
precision measurements in a wide range of applications.
You can also use it to measure the signals on differential
serial buses such as CAN and RS-485.

1000 V CAT III mains voltage kit•••

PicoScope 4444 differential oscilloscope
3× PicoConnect 442 1000 V CAT III passive
differential voltage probes
1× TA271 single-ended D9-BNC adaptor

The 1000 V CAT III mains voltage kit enables you to makenon-ground-referenced measurements, safely probe
single phase and 3-phase voltages and measure powerdrawn by mobile and IoT devices. It also has applications
for hybrid and electric vehicle design, motor drives andinverters.

1000 V CAT III mains voltage and current kit

•
•
•
•

PicoScope 4444 differential oscilloscope
3× PicoConnect 442 1000 V CAT III passive
differential voltage probes
3× TA368 2000 2000 A AC flex current probes (rated
for 1000 V CAT III and 600 V CAT IV)
1× TA271 single-ended D9-BNC adaptor

Similar to the 1000 V CAT III mains voltage kit, butwith three additional current probes, allowing safe
measurement of currents up to 2000 A on uninsulated
mains conductors.

PicoScope 4444 differential oscilloscopeAccessories
A number of accessories are available for the PicoScope 4444. These are available to purchase individually or in addition to a kit. Alternatively, you can design your own kit
configuration on our website, www.picotech.com.
Remember: all accessories marked with thesymbol use Pico D9 connectors and our unique intelligent probe interface, so can only be used with the PicoScope 4444.

Differential voltage probes
PicoConnect 441 probe: measure from millivolts to ±50 V

PicoConnect 442 probe: 1000 V CAT III test leads
The PicoConnect 442 is a passive
differential voltage measurement
probe with 25:1 attenuation and
10 MHz bandwidth. It is rated
for use up to 1000 V CAT III,and using this probe with the
PicoScope 4444 is the mostcost-effective way to make thesemeasurements safely on multiple
channels. With no need for abattery pack, the PicoConnect 442
is suitable for short- and longerterm voltage measurements.
The probe is double-insulated toeliminate the need for a safety
ground. It is fitted with shrouded
4 mm banana leads and comeswith a selection of suitable test
probes.

The PicoConnect 441 is a general-purpose passive differential probe with noattenuation and 15 MHz bandwidth, precisely measuring voltages on ranges from
±10 mV to ±50 V. The probe is fitted with a ground reference clip, as well as the usual
positive and negative leads, to eliminate unknown common mode voltage differences
between the probe and the device under test (DUT). It uses unshrouded 4 mm banana
leads, so is compatible with a wide range of test probes: it comes with a pair of sprung
hook probes.

Applications for this probe
include testing the equipment
listed for Overvoltage Category
III under EN 61010‑1:2010,
such as measuring voltages
on distribution boards, circuit
breakers, and fixed socket outlets.

This probe is ideal for anyone needing to make lower-amplitude, precision
measurements in a wide range of applications. You can also use it to measure thedifferential outputs of differential serial buses such as CAN or RS-485.

PicoScope 4444 differential oscilloscopeCurrent measurement probes (Pico D9)
The TA300 and TA301 both use the Hall effect to measure AC and DC currents, while the TA368 uses the Rogowski coil principle to measure AC current without saturation. The
intelligent probe interface means that the probes are powered directly by the PicoScope 4444, so you can use them to measure current for extended periods of time withoutworrying about flat batteries. It also means that when you connect any of these probes, the PicoScope 6 software automatically configures itself to display your signal.

TA300 current probe

TA301 current probe

TA368 flexible current probe

The TA300 current probe is a 40 A AC/DC probe with100 kHz bandwidth. It is a precision probe for smaller
currents, rated for use up to 300 V CAT III on uninsulated
conductors.

The TA301 current probe is a switched-range 200/2000 A
AC/DC probe with 20 kHz bandwidth, rated to 150 V
CAT II on uninsulated conductors.

The TA368 is a 2000 A AC RMS probe with 10 Hz to
20 kHz bandwidth, rated to 1000 V CAT III and 600 V
CAT IV on uninsulated conductors. It has a flexible sensor
coil, enabling you to measure currents on hard-to-reachconductors.

Overvoltage Category III covers the equipment
forming the electrical wiring installation of abuilding, including the circuit breakers, socket
outlets and some industrial equipment.

CAT IV

Overvoltage Category II is for equipment poweredby wiring within the building, whether it is plugged in
at a socket or permanently connected.

CAT IIICAT IIOVERVOLTAGE CATEGORIES EXPLAINED
Overvoltage Category IV covers the equipment at
the source of the installation, such as electricity
meters and primary overcurrent protection devices.

PicoScope 4444 differential oscilloscopeFlexible AC current probes (BNC)The TA326 and TA325 current probes use the Rogowski coil principle to measure AC currents up to 3000 A, without suffering from saturation. These probes have flexible sensor
coils, enabling you to measure currents on conductors that clamp-type current probes just can’t get to, while the long battery life means you can leave them connected for longerterm measurements.
Both of these probes are fitted with BNC connectors, so you will need to use TA271 single-ended D9-BNC adaptors to connect them to the PicoScope 4444.

TA326 flexible current probe

TA325 flexible 3-phase current probe

The TA326 is a switched-range 30/300/3000 A AC RMS probe with 10 Hz to 20 kHz
bandwidth, rated to 1000 V CAT III on uninsulated conductors. Typical battery life is2000 hours.

The TA325 is a switched-range 30/300/3000 A AC RMS probe with 10 Hz to 20 kHz
bandwidth, rated to 1000 V CAT III on uninsulated conductors. Suitable for measuring3-phase AC current, it has three sensor coils and scope connection leads, color-coded
to match Channels A, B and C in the PicoScope software. Typical battery life is 1000
hours.

You will need one TA271 D9-BNC adaptor in order to use this probe with the
PicoScope 4444.

You will need three TA271 D9-BNC adaptors in order to use this probe with the
PicoScope 4444.

D9-BNC adaptors: use BNC accessories with the PicoScope 4444
The TA271 D9-BNC adaptor lets you use traditional differential voltage probes and current probes,
and make single-ended measurements with a ground-referenced probe. It is also essential whenusing the TA325 and TA326 current probes.
The TA299 D9-dual BNC adaptor allows you to make differential measurements by connecting two
ground-referenced passive probes or cable pairs to one scope input.

PicoScope 4444 differential oscilloscopePicoScope 6 software
The PicoScope software display can be as basic or as detailed as you need. Begin with a single view of one channel, and then expand the display to include up to four live channels,
plus math channels and reference waveforms. Display multiple scope and spectrum views in a configurable grid.
Tools menu: Set up custom
probes, serial decoding,reference waveforms, mask
tests, alarms and macros
from the Tools menu.

Touchscreen controls:
Handy buttons makefine adjustments easy
on touchscreen devices.

Flexible resolution:
Choose between 12- and14-bit resolution.

Toolbars: Quickly access all themost frequently-used controls
from toolbars, leaving the display
clear for your waveforms.

Buffer Navigation toolbar: PicoScope
can record up to 10 000 of your mostrecent waveforms. Click through thebuffer to look for intermittent events,
or use the Buffer Overview thumbnails.

Channel options:
Adjust settings specificto each channel here.

Ruler legend:
Absolute anddifferential ruler
measurements arelisted here.

Auto Setup button:
Let PicoScopeconfigure the collection
time and input range
for a correctly scaled
display.

Rulers: Each axis has
two rulers that you
can drag across thescreen to make quick
measurements.

Trigger marker: Drag
the marker to adjust
the trigger thresholdand pre-trigger time.

Adjustable axes: Movethe vertical axes up
and down the display
and vary their scaleand offset. PicoScope
can also rearrange theaxes automatically.

Zooming and
Scrolling toolbar:
PicoScope makes
it easy to zoom in
on waveforms, withstraightforwardzoom-in, zoom-out
and pan tools.

Views: Add newscope and spectrum
views with automaticor custom layouts.

Trigger toolbar: Quick access tothe main controls, with advanced
triggers in a pop-up window.

Automatic measurements: Add as many
calculated time- and frequency-domain
measurements as you need, along withstatistical parameters showing their variability.

Spectrum view: View frequency-domain
data alongside time-domain waveforms
or in the dedicated spectrum mode.

Zoom Overview window:
Click and drag for quick
navigation and adjustmentof zoomed views.

PicoScope 4444 differential oscilloscope

Advanced display
PicoScope 6 software dedicates the majority of the display area to the waveform, ensuring that the maximum amount of data is visible at all times. The size of the display is only
limited by the size of your computer’s monitor, so even with a laptop, the viewing area is much bigger, with much higher resolution, than that of a benchtop scope.
With such a large display area available, you can create a customizable split-screen display and view multiple channels or different views of the same signal at the same time – thesoftware can even show multiple oscilloscope and spectrum analyzer views at once. Each view has separate zoom, pan and filter settings for ultimate flexibility.
You can control the PicoScope 6 software using a mouse, touchscreen or customizable keyboard shortcuts.

PicoScope 4444 differential oscilloscope

DeepMeasure
The PicoScope 6 DeepMeasure tool uses deep memory to analyze every cycle contained in each triggered waveform acquisition. It displays the results in a table, with the parameterfields shown in columns and waveform cycles shown in rows: you can easily sort the results by any parameter and correlate them with the waveform display.
The current version of the tool includes sixteen parameters per cycle, and can display up to a million cycles.
Parameters include cycle time, frequency, pulse width, duty cycle, rise and fall time, overshoot, undershoot, max voltage and min voltage. Start and end times relative to the trigger
are given for each cycle.

PicoScope 4444 differential oscilloscope

Spectrum analyzer
The spectrum view plots amplitude against frequency and is ideal for finding noise, crosstalk or distortion in signals. PicoScope 6 uses a fast Fourier transform (FFT) spectrum
analyzer, which (unlike a traditional swept spectrum analyzer) can display the spectrum of a single, non-repeating waveform.
With a click of a button, you can display a spectrum plot of the active channels, with a maximum frequency of up to 200 MHz. A comprehensive range of settings gives you control
over the number of spectrum bins, window functions, scaling (including log/log) and display mode (instantaneous, average or peak-hold).
Display multiple spectrum views with different channel selections and zoom factors, and place these alongside time-domain views of the same data. Choose from a number of
automatic frequency-domain measurements to add to the display, including THD, THD+N, SNR, SINAD and IMD. You can apply mask limit testing to a spectrum and can even use the
AWG and spectrum mode together to perform swept scalar network analysis.

PicoScope 4444 differential oscilloscope

Serial decoding
All PicoScope oscilloscopes include serial decoding and analysis as standard. The PicoScope 6 software has support for 20 protocols including I2C, SPI, CAN, RS-232, Manchesterand DALI.
Decoding helps you see what is happening in your design to identify programming and timing errors and check for other signal integrity issues. Timing analysis tools help to show
the performance of each design element, identifying parts of the design that need to be improved to optimize overall system performance.

Graph format shows the decoded data (in hex, binary, decimal or ASCII) in a timing
diagram format, beneath the waveform on a common time axis, with error frames
marked in red.

Table format shows a list of the decoded frames, including the data and all flags
and identifiers. You can set up filtering conditions to display only the frames you areinterested in or search for frames with specified properties.

You can zoom in on these frames to investigate noise or distortion, and each packet
field is assigned a different color, so the data is easy to read.

The statistics option reveals more detail about the physical layer such as frame times
and voltage levels. PicoScope 6 can also import a spreadsheet to decode the data intouser-defined text strings.

PicoScope 4444 differential oscilloscope

Advanced digital triggers
In 1991, Pico Technology pioneered the use of digital triggering and precision hysteresis using the actual digitized data. Traditionally, digital oscilloscopes have used an analog
trigger architecture based on comparators, which can cause time and amplitude errors that cannot always be calibrated out. Additionally, the use of comparators can often limit thetrigger sensitivity at high bandwidths and can create a long trigger rearm delay.
Pico’s technique of fully digital triggering reduces trigger errors and allows our oscilloscopes to trigger on the smallest signals, even at the full bandwidth, so you can set trigger
levels and hysteresis with high precision and resolution.
The digital trigger architecture also reduces the rearm delay. Combined with the segmented memory, this enables you to use rapid triggering to capture 10 000 waveforms in under
12 ms in 8-bit mode.
The PicoScope 4444 offers an industry-leading set of advanced triggers including:•Pulse-width trigger: allows you to trigger on either high or low pulses which are shorter or longer than a specified time or which fall inside or outside a range of times.

•

Interval trigger: measures the time between subsequent rising or falling edges. This allows you to trigger if a clock signal falls outside of an acceptable frequency range, forexample.

•Dropout trigger: fires when a signal stops toggling for a defined interval of time, functioning as a watchdog timer.

PicoScope 4444 differential oscilloscopeMask limit testing
Mask limit testing allows you to compare live signals against known good signals, and is designed for production and debugging environments. Simply capture a known goodsignal, generate a mask around it, and then use the alarms to automatically save any waveform (complete with a time stamp) that violates the mask. PicoScope will capture
any intermittent glitches and show a failure count and other statistics in the Measurements window (which you can still use for other measurements). You can also set the
waveform buffer navigator to show only mask fails, enabling you to find any glitches quickly. Mask files are easy to edit (numerically or graphically), import and export, and you cansimultaneously run mask limit tests on multiple channels and in multiple viewports.

Alarms
You can program PicoScope 6 to execute actions when certain
events occur. These events include mask limit fails, trigger eventsand buffers full.
PicoScope 6 actions include saving a file, playing a sound, executing
a program and triggering the arbitrary waveform generator.

PicoScope 4444 differential oscilloscope

Plot frequency against time with
PicoScope 6
All oscilloscopes can measure the frequency
of a waveform, but often you need to know
how that frequency changes over time, which
is a difficult measurement to make.
The freq math function can do exactly this:in this example, it is being used to plot thefrequency of the top waveform, revealingthat it is exponentially modulated. Adding
time and signal rulers allows measurementof the period and range of this modulation.
You can also use the duty function to plot
duty cycle in a similar way.

Math channels
With PicoScope 6 you can perform a variety of mathematical calculations on your input signals and reference
waveforms.
Use the built-in list for simple functions such as add and invert, or open the wizard and create complex functions
involving trigonometry, exponentials, logarithms, statistics, integrals and derivatives.

PicoScope 4444 differential oscilloscopePicoLog® 6 support

PicoSDK® – write your own apps

The PicoScope 4444 is now supported in PicoLog 6, allowing you to use multiple
units simultaneously, so it is possible to view and record 3‑phase voltage and 3‑phasecurrent on one capture with two PicoScope 4444s.

Our software development kit, PicoSDK, allows you to write your own software andincludes drivers for Windows, macOS and Linux. Example code supplied on our GitHub
organization page shows how to interface to third-party software packages such as
National Instruments LabVIEW, and how to use our MathWorks MATLAB instrument
drivers.

PicoLog 6 allows sample rates of up to 1 kS/s per channel, and is ideal for longterm observation of parameters such as phase, voltage and current levels on several
channels at the same time, such as when monitoring building and HVAC power usage.
It is less suitable for waveshape or harmonic analysis: use the PicoScope 6 software
for these tasks.
You can also use PicoLog 6 to view data from oscilloscope alongside a data logger orother device. In the example below, for instance, a PicoScope 4444 is logging 3-phasecurrent alongside a PicoLog CM3 current data logger.

Amongst other features, the drivers support data streaming, a mode that capturescontinuous gap-free data directly to your PC at rates of up to 50 MS/s, so you are notlimited by the size of your scope’s capture memory. Sampling rates in streaming modeare subject to PC specifications and application loading.
There is also an active community of PicoScope 6 users who share both code andwhole applications on our Test and Measurement Forum and the PicoApps section of
the website.

PicoScope 4444 differential oscilloscope

Specifications
VERTICAL

Input channels
Analog bandwidth (–3 dB)
Rise time (calculated)
Bandwidth limiter
Vertical resolution, 12-bit mode
Vertical resolution, 14-bit mode
Enhanced vertical resolution(PicoScope 6 software), 12-bit mode
Enhanced vertical resolution(PicoScope 6 software), 14-bit mode
Input type
Input characteristics
Input coupling
Input sensitivity
Input ranges (full scale)
Input common mode range
DC accuracy (DC to 10 kHz)
Analog offset range
Analog offset accuracy
Overvoltage protection

OSCILLOSCOPE SPECIFICATIONSSPECIFICATIONS WITH PICOCONNECT 442 1000 V CAT III PROBE

4 channels
20 MHz with D9-BNC adaptors
15 MHz with PicoConnect 441 probe17.5 ns with D9-BNC adaptors
23.3 ns with PicoConnect 441 probe
100 kHz or 1 MHz (selectable)
12 bits on most input ranges
11 bits on ±10 mV range
14 bits on most input ranges
13 bits on ±20 mV range
12 bits on ±10 mV range
Up to 16 bits on most input ranges
Up to 15 bits on ±10 mV range
Up to 18 bits on most input ranges
Up to 17 bits on ±20 mV range
Up to 16 bits on ±10 mV range
Differential
9-pin D-subminiature, female
1 MΩ ±1%, in parallel with 17.5 pF ±1 pF (each differential input toscope ground).
<1 pF difference between ranges.
AC or DC (selectable)
2 mV/div to 10 V/div±10 mV, ±20 mV, ±50 mV, ±100 mV, ±200 mV, ±500 mV,±1 V, ±2 V, ±5 V, ±10 V, ±20 V, ±50 V
5 V on ±10 mV to ±500 mV ranges
50 V on ±1 V to ±50 V ranges±1% of full scale, ±500 µV±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
1% of offset setting in addition to basic DC accuracy±100 V DC + AC peak (any differential input to ground)±100 V DC + AC peak (between differential inputs)

One differential pair per connected probe
10 MHz
35 ns
100 kHz or 1 MHz (selectable)
12 bits
14 bits
Up to 16 bits
Up to 18 bits
Differential
2 x 4 mm sockets, shrouded
16.7 MΩ ±1%, in parallel with 9.3 pF ±1 pF (each differential input toscope ground)AC or DC (selectable)±0.5 V/div to ±200 V/div±2.5 V, ±5 V, ±12.5 V, ±25 V, ±50 V, ±125 V, ±250 V, ±500 V, ±1000 V
125 V on ±2.5 V to ±12.5 V ranges
1000 V on ±25 V to ±1000 V ranges±3% of full scale, ±12.5 mV±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
1% of offset setting in addition to basic DC accuracy
1000 V CAT III (any differential input to ground)1000 V CAT III (between differential inputs)

PicoScope 4444 differential oscilloscope

HORIZONTAL

Maximum sampling rate (real time)
12-bit mode
Maximum sampling rate (real time)
14-bit mode
Maximum sampling rate (USB streaming)
Capture memory (real time)
Capture memory (USB streaming)
Maximum duration of capture at fastest
sampling rate (real time), 12-bit mode
Maximum duration of capture at fastest
sampling rate (real time), 14-bit mode
Maximum waveform buffer segments
Fastest real-time collection time,
12-bit mode
Fastest real-time collection time,
14-bit mode
Slowest real-time collection time
Collection time accuracy
Sample jitter
ADC sampling

1 channel: 400 MS/s
2 channels: 200 MS/s
3 or 4 channels: 100 MS/s
1 channel: 50 MS/s
2 channels: 50 MS/s
3 or 4 channels: 50 MS/s
16.67 MS/s
256 MS shared between active channels
100 MS (shared between active channels)
500 ms5s
10 00050 ns (5 ns/div)
200 ns (20 ns/div)
50 000 s (5000 s/div)±50 ppm (5 ppm/year aging)
3 ps RMS typical
Simultaneous sampling on all enabled channels

DYNAMIC PERFORMANCE (TYPICAL)

CrosstalkHarmonic distortion at 100 kHz,
90% of full scale
SFDR
ADC ENOB, 12-bit mode
ADC ENOB, 14-bit mode
Noise
Bandwidth flatness
Common mode rejection ratio

OSCILLOSCOPE SPECIFICATIONSSPECIFICATIONS WITH PICOCONNECT 442 1000 V CAT III PROBE

2000:1 DC to 20 MHz< –70 dB on ±50 mV ranges and higher< –60 dB on ±10 mV and ±20 mV ranges> 70 dB
10.8 bits
11.8 bits< 180 µV RMS on ±10 mV range(+0.1 dB, –3 dB) DC to full bandwidth
60 dB typical, DC to 1 MHz

2000:1 DC to 10 MHz< –70 dB
> 70 dB
10.8 bits
11.8 bits< 5 mV RMS on ±2.5 V range(+0.1 dB, –3 dB) DC to full bandwidth
55 dB typical, DC to 1 MHz

PicoScope 4444 differential oscilloscope

TRIGGERING

SourceTrigger modes
Trigger types
Trigger sensitivity
Maximum pre-trigger capture
Maximum trigger time-delay
Trigger rearm time
Maximum trigger rate

Any channel
None, auto, repeat, single, rapid
Edge, window, pulse width, window pulse width, dropout, window dropout, interval, runt pulse, logic
Digital triggering provides up to 1 LSB accuracy up to full bandwidth
100% capture length
4 billion samples< 2 µs on fastest timebase
10 000 waveforms in a 12 ms burst

PROBE COMPENSATION PINS

Output level
Output impedance
Output waveforms
Output frequency
Overvoltage protection

4 V peak610 Ω
Square wave
1 kHz
±10 V

MATH CHANNELS

FunctionsOperands−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, freq, derivative, integral, min,max, average, peak, delay, duty, highpass, lowpass, bandpass, bandstop
A, B, C, D, T (time), reference waveforms, constants, pi

AUTOMATIC MEASUREMENTS

Scope mode
Spectrum mode
Statistics

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
Frequency at peak, amplitude at peak, average amplitude at peak, total power, THD %, THD dB, THD+N, SFDR, SINAD, SNR, IMD
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 ASCII, Modbus RTU,
PS/2, SENT, SPI, UART (RS‑232 / RS‑422 / RS‑485), USB 1.0/1.1

MASK LIMIT TESTING

Statistics

Pass/fail, failure count, total count

SDK/API DETAILS AND SPECIFICATIONS FOR USERS WRITING THEIR OWN SOFTWARE (see “HORIZONTAL” above for details when using PicoScope 6 software)

Supplied drivers
Example code
Maximum sampling rate (USB streaming)
Capture memory (USB streaming)
Segmented memory buffers

32- and 64-bit drivers for Windows 7, 8 and 10
Linux drivers (including armhf drivers)
macOS drivers
C, C#, Excel VBA, VB.NET, LabVIEW, MATLAB
50 MS/s
Up to available PC memory> 1 million

PicoScope 4444 differential oscilloscope

GENERAL SPECIFICATIONSConnectivity
Device connector type
Power requirements
Dimensions
WeightTemperature range, operating
Temperature range, operating, for quoted
accuracy
Temperature range, storage
Humidity range, operating
Humidity range, storage
Altitude
Pollution degree
Safety approvals
EMC approvals
Environmental approvals

USB 3.0, USB 2.0
USB 3.0, Type B
USB port or external DC PSU, depending on connected accessories
190 x 170 x 40 mm including connectors< 0.5 kg
0 °C to 45 °C
15 °C to 30 °C–20 °C to 60 °C
5% to 80% RH non-condensing
5% to 95% RH non-condensing
Up to 2000 m
Pollution degree 2
Designed to EN 61010-1:2010
Tested to EN 61326-1:2013 and FCC Part 15 Subpart B
RoHS and WEEE compliant

SOFTWARE AVAILABILITY AND REQUIREMENTS (HARDWARE REQUIREMENTS AS OPERATING SYSTEM)

Windows software
macOS software
Linux software

Raspberry Pi OS for 3B and 4B
Languages supported, PicoScope 6
Languages supported, PicoLog 6

PicoScope 6, PicoLog 6, PicoSDKSee PicoScope and PicoLog release notes for supported OS versions
PicoScope 6 Beta (including drivers), PicoLog 6 (including drivers)
See PicoScope and PicoLog release notes for supported OS versions
PicoScope 6 Beta software and drivers, PicoLog 6 (including drivers)
See PicoScope and PicoLog release notes for supported distributions
See Linux Software and Drivers to install drivers only
PicoLog 6 (including drivers)
See PicoLog release notes for supported OS versions
See Linux Software and Drivers to install drivers only
Simplified Chinese, Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian,Japanese, Korean, Norwegian, Polish, Portuguese, Romanian, Russian, Spanish, Swedish, Turkish
Simplified Chinese, English (UK), English (US), French, German, Italian, Japanese, Korean, Russian, Spanish

Users writing their own apps can find example programs for all platforms on the Pico Technology organization page on GitHub.

PicoScope 4444 differential oscilloscopeOrdering information
Oscilloscope kits
Order code Product name

PQ073
PQ074
PQ167
PQ088

Description

Extra low voltage differential kit PicoScope 4444 plus 3× PicoConnect 441 probes and 1× TA271 D9-BNC adaptor
1000 V CAT III mains voltage kit PicoScope 4444 plus 3× PicoConnect 442 probes and 1× TA271 D9-BNC adaptor
1000 V CAT III mains voltage and
PicoScope 4444 plus 3× PicoConnect 442 probes, 3× TA368 flex current probes and 1× TA271 D9‑BNC adaptor
current kit
PicoScope 4444 oscilloscope
Oscilloscope only. Must be purchased with at least one of the Pico D9 accessories listed below.

Accessories
Order code Product name

PQ098
PQ087
TA300
TA301
TA368
TA325

PicoConnect 441 probe*
PicoConnect 442 probe*
TA300 AC/DC current probe
TA301 AC/DC current probe
TA368 flex current probe
TA325 flex current probe
3-phase

TA326

TA326 flex current probe

TA271
TA299
PA149

TA271 D9-BNC adaptor
TA299 D9-dual BNC adaptor
Carry case

Description

Passive differential 1:1 15 MHz voltage measurement probe.
1000 V CAT III, passive differential 25:1 10 MHz voltage measurement probe.
40 A AC/DC, 300 V CAT III, 100 kHz current measurement probe
200/2000 A AC/DC, 150 V CAT II, 20 kHz current measurement probe
Flexible single-phase 2000 A AC RMS, 1000 V CAT III, 600 V CAT IV, 10 Hz to 20 kHz current probe
Flexible 3-phase switched-range 30/300/3000 A AC RMS, 1000 V CAT III, 10 Hz to 20 kHz current probe. Requires
3x TA271 D9-BNC adaptor (sold separately).
Flexible single-phase switched-range 30/300/3000 A AC RMS, 1000 V CAT III, 10 Hz to 20 kHz current probe.
Requires 1x TA271 D9-BNC adaptor (sold separately).
D9-BNC adaptor suitable for ground-referenced measurements using a single probe
D9-dual BNC adaptor suitable for differential measurements using two single-ended probes
Portable carry case to hold the PicoConnect 4444 and its accessories

Connector
Pico D9
Pico D9
Pico D9
Pico D9
Pico D9
3x BNC
BNC
Pico D9
Pico D9
N/A

Calibration service
Order code

Model name

Description

CC045

Calibration certificate CC045

Calibration certificate for PicoScope 4444 differential oscilloscope* Additional accessories are available for the PicoConnect 441 and 442 probes: see online for details.

PicoScope 4444 differential oscilloscope

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United Kingdom

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Texas 75702
United States

Pico Technology
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Zhabei District
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sales@picotech.com

+1 800 591 2796
sales@picotech.com



+86 21 2226-5152
pico.asia-pacific@picotech.com

Errors and omissions excepted. Pico Technology, PicoScope, and PicoLog are registered trademarks of Pico Technology Ltd. PicoConnect,
PicoSDK and FlexRes are registered trademarks of Pico Technology Ltd.

www.picotech.com

LabVIEW is a trademark of National Instruments Corporation. Linux is the registered trademark of Linus Torvalds, registered in the U.S. andother countries. macOS is a trademark of Apple Inc., registered in the U.S. and other countries. MATLAB is a registered trademark of The
MathWorks, Inc. Windows and Excel are registered trademarks of Microsoft Corporation in the United States and other countries.
MM082.en-6. Copyright © 2017–2022 Pico Technology Ltd. All rights reserved.
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