PicoScope 4444

High-resolution differential USB oscilloscope

PicoScope 4444 oscilloscope specifications

  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
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 (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)
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) 10 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
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, DCC, DMX512, Ethernet 10Base-T, FlexRay, I²C, I²S, LIN, 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
Interpolation Linear or sin(x)/x
Persistence modes Digital color, analog intensity, custom, fast or none
Supplied drivers 32- and 64-bit drivers for Windows 7, 8 and 10
Linux drivers
Mac OS X drivers
Example code C, C#, Excel VBA, VB.NET, LabVIEW, MATLAB
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.

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
Software PicoScope 6 for Windows and Windows SDK
PC requirements Windows 7, 8 or 10, 32-bit or 64-bit. Hardware requirements as operating system.
Languages supported Simplified Chinese, Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Romanian, Russian, Spanish, Swedish, Turkish