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1:1 Differential Probe for M520/M570 Family Oscilloscopes, 280V US$199.00

EA121
1:1 Differential Probe for M520/M570 Family Oscilloscopes, 280V


  • Attenuation 1:1
  • Gain error less than 0.02%
  • Operating common mode voltage range: -280V to +280V
  • Maximum input voltage: 300V (500V max. 10s)
  • Powered directly from oscilloscope
  • The EA121 Differential Probe is optional equipment for the ETC M520 and M570 oscilloscope families. It can be connected to any measuring channel and it is powered directly from the oscilloscope. A flat connection cable for power is included.

    A unique feature of the EA121 probe is the exceptionally high operating common mode voltage together with a 1:1 attenuation. Thanks to these features, it is possible to measure differential voltages of tenths of millivolts amplitude while common mode voltage is up to 280V.

    The box measures 58 25 97 mm.

    Performance Characteristics
    Number of channels1
    Type of inputDifferential
    Gain1
    Gain error at 20 C<0.02%
    Gain versus temperature0.001% / C
    Output DC offset for common mode voltage = 0V<1.1mV
    Common mode voltage rejection (f < 10kHz)<90dB (<32V/V)
    Differential input resistance800 kΩ typical
    Input resistance to ground of the oscilloscope400 kΩ typical
    Operating range of differential input voltage-14V to +14V (fmax 38 kHz)
    -1V to +1V (fmax 500 kHz)
    Operating common mode voltage range-280V to 280V
    Absolute maximum input voltage-300V to +300V continuously
    -500V to +500V max 10s
    Supply current< 45 mA and 5V

    The differential voltage input range depends on frequency as shown in the above table. Up to 1Vdiff (2Vpp) the limit is the -3dB drop of attenuation. For higher differential voltages the limit is the harmonic waveform distortion of 1%.


    This product was added to our catalog on Tuesday 16 April, 2013.

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