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Tektronix 3 Series MDO

Tektronix 3 Series MDO

With the largest display in class, improved low-level signal measurement accuracy and industry-leading probe performance, the 3 Series MDO sets a new standard for bench oscilloscopes. Whether you’re testing your baseband design for IoT or just for simple EMI sniffing, the 3 Series has a unique true hardware spectrum analyzer built right in with superior RF test performance and guaranteed RF specifications.

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  • Description

    Industry-leading Probe Performance

    Probes should not be overlooked as a key element in the measurement signal path. When you buy a 3 Series MDO you get the industry’s best probes free. Featuring industry-best loading of 3.9 pF to your oscilloscope, the TPP Series probes will be your go-to probe for everyday use.



    • TPP Series probes included standard. One per analog channel.
    • Industry-best capacitive probe loading of 3.9 pF
    • 250 MHz, 500 MHz or 1 GHz probe bandwidth depending on instrument bandwidth


    Low-level signal measurement accuracy improved by as much as 40%

    When you are measuring low level signals, it is critical to have a low instrument noise floor for better measurement accuracy. New front-end used in 3 series MDO can help you improve your noise measurements by as much as 40%. When you are evaluating an oscilloscope, be sure to carefully check the random noise specifications of the oscilloscope. Not all oscilloscopes are created equal, and not all oscilloscope manufacturers test and publish their random noise specifications.


    Key Performance Specifications

    • 2 and 4 analog channel models
    • 100 MHz, 200 MHz, 350 MHz, 500 MHz, 1 GHz bandwidth models
    • Bandwidth is upgradable (up to 1 GHz)
    • Up to 5 GS/s sample rate
    • 10 M record length on all channels
    • >280,000 wfm/s maximum waveform capture rate
    • Standard passive voltage probes with 3.9 pF capacitive loading and 250 MHz, 500 MHz or 1 GHz analog bandwidth
    • Spectrum Analyzer
      • Frequency range: 9 kHz - 1 GHz (standard) or 3 GHz (optional)
      • Ultra-wide capture bandwidth up to 3 GHz
    • Arbitrary Function Generator (optional)
      • 13 predefined waveform types
      • 50 MHz waveform generation
      • 128 k arbitrary generator record length
      • 250 MS/s arbitrary generator sample rate
    • Digital Channels (optional)
      • 16 digital channels
      • 10 M record length on all channels
      • 121.2 ps timing resolution
    • Serial Bus Decode, Triggering and Search (optional)
      • Serial bus support for I2C, SPI, RS-232/422/485/UART, USB 2.0, CAN, CAN FD, LIN, FlexRay, MIL-STD-1553, ARINC429, and Audio standards
    • Digital Voltmeter / Frequency Counter (Free with product registration)
      • 4-digit DC, AC RMS, and DC+AC RMS voltage measurements
      • 5-digit frequency measurements
  • ​​​​​​​Specs at a glance

    Input Channels

    • 2 or 4 analog
    • 16 digital1
    • 1 spectrum analyzer


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

    Sample Rate

    • 5 GS/s (1 GHz model), 2.5 GS (all other models) on analog channels
    • Up to 8.25 GS/s (121 ps resolution) on digital channels

    Record Length

    • 10 Mpoints on all channels

    Spectrum Analyzer1

    • 1 GHz standard, 3 GHz optional

    Signal Generator1

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

    Digital Voltmeter2

    • 4-digit AC RMS, DC, and AC+DC RMS voltage measurements

    Trigger Frequency Counter2

    • 5-digit frequency measurements

    Advanced Analysis1

    • Automated Power Measurements

    Protocol Support1

    • I2C, SPI
    • RS-232, RS-422, RS-485, UART
    • CAN, CAN FD, LIN, FlexRay
    • MIL-STD-1553, ARINC 429
    • I2S, LJ, RJ, TDM
    • USB 2.0


    • 11.6-inch (295 mm)
    • HD color (1920 x 1080) capacitive touchscreen


    • 11.7 lbs (5.3 kg)


  • Typical applications

    • Embedded design and IoT

      Discover and solve issues quickly by performing system level debug on mixed signal embedded systems including today's most common serial bus technologies with the 3 Series MDO and support for a broad set of common serial buses.

    • Power design

      Make reliable and repeatable voltage, current, and power measurements using automated power quality, switching loss, harmonics, ripple, modulation, and safe operating area measurements with the widest selection of power probes in an affordable solution.

    • Education

      Managing multiple instruments on a bench can be troublesome. The 3 Series MDO combines analog, digital, and RF measurements with a signal source in a single, small (5.9 in., 149 mm deep) instrument. The combination of a small instrument and high level of integration aids in the teaching of various electronics principles as well as in its usage for more sophisticated lab experiments. Full upgradeability enables adding functionality over time as needs change or budgets allow.

    • Manufacturing Test and Troubleshooting

      Size and space constraints can play havoc on a manufacturing floor. The 3 Series MDO minimizes rack or bench space by integrating multiple instruments into one small package. Integration reduces cost associated with utilizing multiple different instrument types in manufacturing test or troubleshooting stations.

    • Service Installation and Maintenance

      Having the right instruments when and where you need them is critical. The 3 Series MDO combines analog waveforms, digital logic, and spectrum analysis in a lightweight (11.7 lbs, 5.3 kg), portable package - making it the perfect choice where space is limited and flexibility is desired.

  • Compare (New Gen Scopes)

      3 Series MDO 4 Series MSO 5 Series MSO 6 Series MSO
    Bandwidth up to 1 GHz up to 1.5 GHz up to 2 GHz up to 8 GHz
    Vertical Resolution 8 bits 12 bits 12 bits 12 bits
    Display 11.6" HD 13.3" HD 15.6" HD 15.6" HD
    Inputs TekVPI FlexChannel / TekVPI FlexChannel / TekVPI

    FlexChannel / TekVPI

    Advanced Analysis

        Compliance / Jitter / Windows OS

    Compliance / Jitter / Windows OS

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