MCM Electronics

Portable 2-Channel 20MHz Oscilloscope with True RMS MultimeterMCM Part #: 72-8470  |  Tenma Part #: 72-8470

Portable 2-Channel 20MHz Oscilloscope with True RMS Multimeter 4.8 stars from 2 reviews.
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Portable and compact handheld instrument provides outstanding Two Channel Color DSO Oscilloscope full-color performance plus added functions of a full featured digital multimeter. At just 7" x 4.5", It's like carrying a full bench meter anywhere you need go complete with advanced measurements and features.

Product Description

  • 20MHz bandwidth
  • 100MS/s real time sample rate
  • Dual input channels
  • Advanced trigger functions
  • Adjustable trigger sensitivity
  • USB Storage / Auto measurement
  • Replaceable Li-ion battery back-up
  • 3.8” color TFT-LCD display

    Included Accessories

  • Two 10:1 probes
  • Standard DMM probes
  • Aluminum carry / storage case
  • Short adaptor for capacitance measurement
  • USB cable with software
  • Internal Li-ion battery pack with included AC charger

    Oscilloscope Specifications
    Bandwidth 20MHz
    Sample Rate ( Real time ) 100MS/s
    Rise time ≤17.5ns
    Display 3.8" color TFT-LCD panel
    320 x 240 pixels, 4096 colors
    Channel Dual
    Record length Max. 6000 points on each channel
    GND reference Oscilloscope and Multimeter grounds are isolated
    Time base range 5ns/div~100s/div
    Interval(delta T)accuracy
    (full bandwidth)
    Single:±(1 interval time+100ppm×reading+0.6ns)
    Average>16:±(1 interval time +100ppm×reading+0.4ns)
    Vertical Sensitivity 5mV/div~5V/div (at input)
    DC Gain Accuracy ±5%
    A/D Converter 8 bit resolution (2CH simultaneously)
    Max. Input Voltage 400V (p-p) CAT II
    Trigger Type Edge, Video
    Trigger Mode Auto, Normal, Single
    Sampling Mode Normal, Peak detection, Average
    Waveform Measurement (delta)V and (delta)T between cursors; p-p, Average, RMS, Frequency, Cycle
    Waveform storage 4 waveforms
    USB storage Support
    Automatic Measurement p-p, Average, RMS, Frequency, Cycle.
    Waveform math +, -, ×, ÷, Inverted

    Multimeter Specifications

    Test ModesVoltage, Current, Resistance, Capacitance, Diode, Continuity
    Full scale reading 3 3/4 digits, maximum 4,000 count
    Input Impedance 10MΩ
    Max input Voltage 400VAC, 400VDC
    Max input Current 10A AC, 10A DC

    General Specifications

    Interface USB and RS232 ports
    Power requirements 8.5VDC, 1500mA
    100 ~ 240VAC, 50/60Hz AC adapter included
    Battery life 6 hours
    Dimension 7" (H) x 4.5" (W) x 1.6" (D)
    Weight 22.75 oz.

  • Product Reviews

    • "Great little scope-meter!" by ericnordin on 7/18/2013
      Overall: 4.5 out of 5
      Top 25 Contributor

      Originally purchased one of these for work. Everyone who used it thought it was great so we purchased a couple more of them for our guys to use in the field. So far I've heard only positive comments and no complaints. These are especially nice for travel, particularly if you're flying since the case is compact and everything fits inside without hiding anything else. It's pretty easy for TSA to see that it's a legitimate piece of equipment when you just open up the case (no need to empty everything out like they typically make you do with scopes in soft bags with pouches for the accessories). It's only a 20MHz scope but that's usually sufficient for our work, especially for field service of our equipment. I like these units well enough that I recently decided to purchase one of these for myself when they were on sale at a discount. My only complaint about the equipment is that the wall supply that shipped with these originally has been replaced by a desk supply so now a somewhat bulky AC power cord needs to be shoehorned into the carry case. Since the case was not designed to accommodate that cord it's kind of a pain to get everything to fit. I do wish they'd go back to the wall supply so all accessories would easily fit into the case. One other beef is the manual - it's really poorly written (or poorly translated at least). Obviously, this isn't particularly surprising for a bargain priced piece of equipment from China but it's still something to consider. In spite of the power cord and manual I still think this unit is an excellent value.

    • "Tenma O'Scope" by motorcycleman4701 on 3/25/2010
      Overall: 5 out of 5

      I wish I had purchased this scope two years ago! I have been trying to justify a handheld scope for years but just could never see spending for a Fluke - then I ran across this. Needless to say, I am sold! Great product and great features as well.

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    Package Specifications & Dimensions
    Weight:6.49 lbs.
    Warranty:365 days
    Need to Return?
    Length:17 in.
    Width:11.5 in.
    Height:6 in.
    Shipping Information
    Extra Shipping Charge:No
    Drop Ship:No
    Catalog Pages

    MCM Cat 57, Page 1252

    MCM Cat 56, Page 1087

    PDF Reference

    Requires Adobe Acrobat Reader.

    Mfr. Info

    Tenma Logo
    Mfr. Name:Tenma
    Mfr. Part Number:72-8470
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