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  • Tektronix 4 Series MSO - MSO44 Mixed Signal Oscilloscope

Tektronix 4 Series MSO - MSO44 Mixed Signal Oscilloscope

Availability: Normally in Stock / Short Lead Time

  • 4 FlexChannel® inputs

  • Bandwdith: 200 MHz, 350 MHz, 500 MHz, 1 GHz, 1.5 GHz (upgradable)

  • Sample Rate: Real-time: 6.25 GS/s

  • Vertical Resolution: 12 bits, up to 16-bits in High Res mode

  • Capacitive (multi-touch) touchscreen


The Tektronix MSO44 from the NEW 4 Series MSO offers better visibility into complex systems by offering four and six channel models with a 13.3-inch high-definition (1,920 x 1,080) display. Many applications, such as embedded systems, three-phase power electronics, automotive electronics, power supply design, and DC-to-DC power converters, require the observation of more than four analog signals to verify and characterize device performance, and to debug challenging system issues.

With the largest display and highest available channel count in its class, the 4 Series offers unprecedented insight in a bench-friendly package. And its made-for-touch user interface works exactly as you'd expect.

Biggest display in its class and award-winning user interface

With the same made-for-touch user interface technology as the award-winning 5 Series and the largest and highest resolution display in its class, the 4 Series MSO sets a new expectation of how a scope should work.

  • 13.3-inch HD display

  • 6.1-inch (15.5 cm) deep bench-friendly footprint

Outstanding details and up to 6 super-flexible channels

Any channel can show a waveform, spectrum, or both

  • Any input can be used to view eight digital channels by connecting a logic probe

  • Outstanding detail and accurate measurements on all channels

    • 12-bit vertical resolution (16-bit in high res mode)

    • 6.25 GS/s on all analog and digital channels

    • Up to 62.5 Mpoints record length

Specs at a glance

Input Channels

  • 4 FlexChannel inputs

  • Each FlexChannel provides 1 analog signal input or 8 digital logic inputs with TLP058 probe

Bandwidth (optional and upgradable)

  • 200 MHz, 350 MHz, 500 MHz, 1 GHz or 1.5 GHz

Sample Rate

  • 6.25 GS/s on all analog/digital channels

Record Length

  • 31.25 or 62.5 Mpoints

Vertical Resolution

  • 12 bits

  • Up to 16 bits in High Res mode

Signal Generation (optional and upgradable)

  • Arbitrary, Sine, Square, Pulse, Ramp, Triangle, DC Level, Gaussian, Lorentz, Exponential Rise/Fall, Sin(x)/x, Random Noise, Haversine, Cardiac

Digital Voltmeter (free with product registration)

  • 4-digit AC RMS, DC

  • DC+AC RMS voltage

Trigger Frequency Counter (free with product registration)

  • 8-digit

Advanced Analysis (optional and upgradable)

  • Automated Power Measurements

  • Spectrum View Mixed Domain Analysis

Protocol Support (optional and upgradable)

  • 10BASE-T, 100BASE-TX

  • CAN, CAN FD, LIN, FlexRay

  • I2C, SPI

  • I2S, LJ, RJ, TDM

  • I3C

  • MIL-STD-1553, ARINC 429

  • RS-232, RS-422, RS-485, UART

  • SENT

  • SPMI

  • USB 2.0 LS, FS, HS


  • 13.3-inch (338 mm)

  • HD color (1920 x 1080) capacitive touchscreen

Dimensions (H x W x D)

  • 249 mm x 405 mm x 155 mm

  • (9.8 in x 15.9 in x 6.1 in)


  • 16 lbs (7.3 kg)

Versatile and upgradeable

Get all the debug tools you need right away or add them when you need them - without having to send it back.

  • Bandwidth up to 1.5 GHz

  • Record length up to 62.5 Mpoints

  • Digital channels: each TLP058 logic probe provides 8 digital channels

  • DVM/Freq Counter (free with registration)

  • Arbitrary/Function Generator

  • Advanced Analysis

    • Serial bus decoding and triggering

    • Spectrum View mixed domain analysis

    • Automated power measurements


  • Four low-capacitance 10X passive probes

- 200 MHz models: TPP0250 MHz probes

- 350 MHz, 500 MHz, 1 GHz or 1.5 GHz models: TPP0500B 500 MHz probes

  • Probe accessory kit
  • Installation and safety manual in English
  • Accessory pouch
  • Power cord
  • Calibration certificate documenting traceability to National Metrology Institute(s) and ISO9001/ISO17025 quality system registration (not shown)
  • 3-year warranty covering all parts and labor on the instrument. 1-year warranty, parts and labor on included probes.


Embedded serial bus analysis

Serial bus decode and trigger options transform the 4 Series MSO into an indispensable tool for debugging serial buses with automatic decode, trigger, and search.

Learn about I2C and SPI bus decode and triggering

Power Integrity

Today's boards can have 20 or more power rails, many of which are less than a few volts with strict noise limits.

Learn more in the Power Rail Measurement application note

Power supply measurements and analysis

Even with lower standby power, faster switching and stricter noise limits, the 4 Series can speed up power supply troubleshooting, optimization and validation.

Learn about automated measurements in the Power Supply Measurement & Analysis with 4/5/6-PWR application note

Automotive ECU design

Automotive systems demand robust communications between ECUs, sensors and actuators.

Learn about CAN, CAN FD, LIN and FlexRay decoding and triggering speed debug

Learn about SENT bus decoding and triggering

Electromagnetic interference (EMI) troubleshooting

With the Spectrum View option each analog channel on the 4 Series MSO can show you a time domain waveform, a spectrum, or both. The time and frequency plots are synchronized to help you quickly determine which signals are the victims and which ones are the aggressors.