Oscilloscope AN/USM-50

MILITARY U.S. (different makers for same model)

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  • Year
  • 1957 ??
  • Category
  • Service- or Lab Equipment
  • Radiomuseum.org ID
  • 336409

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 43
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 50-60 Hz: 105-125 Volt
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Oscilloscope AN/USM-50 - MILITARY U.S. different makers
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 490 x 390 x 380 mm / 19.3 x 15.4 x 15 inch
  • Notes

  • This Oscilloscope has the following characteristics;

    Sinusoidal response for the vertical amplifier: from 3 to 15 MHz.
    Vertical amplifier rise time: 22 nsec.
    Vertical amplifier delay: 250 nsec.
    Vertical amplifier droop: lower than 5% on pulses of 15,000 µsec.
    Vertical sensitivity: 10 mV/cm.
    Upward deflection by positive polarity.
    Vertical amplifier input impedance: 1 MΩ in parallel with 40 pF.
    Response for the horizontal amplifier: between 10 and 750 kHz.
    Variable sensitivity: between 1.2 and 80 V peak-to-peak/cm of horizontal deflection.
    Horizontal amplifier input impedance: 1 MΩ in parallel with 30 pF.
    Rise time of the horizontal route: 20 nsec.
    Variable time axis generator: continuously variable from 0.2 to 37,000 µsec/inch of horizontal deflection (0.08 to 10,800 µsec/cm).
    Mode of operation of the time axis: Auto or Triggered.
    Sweep delay: option to expand x 10 every tenth of the horizontal trace, up to a speed of the time axis of about 2 µsec/cm.
    1 kHz rectangular wave calibrator with variable amplitude from 0.01 to 0.1 V peak-to-peak for internal use and fixed output of 30 V peak-to-peak.
    Trigger generator: continuously variable from 10 to 10,000 pulses/sec in three ranges of one decade. Width of a 1.2 µsec pulse, with a rise time of 150 nsec.
    Positive and negative output of trigger pulses for external use.
    Mark generator with modulation of beam intensity with a cadence of 0.2 - 1 - 5 - 20 - 100 - 500 - 2,000 µsec.

    Supplied to the US Army from 1957 until about 1970.

    This information has been translated from the text on CQ Elettronica, written by Eng. Marcello Fabio Francardi, author of the article.

    Some tubes are listed once.

  • Net weight (2.2 lb = 1 kg)
  • 13 kg / 28 lb 10.1 oz (28.634 lb)
  • Mentioned in
  • CQ Elettronica, CD editor, number 1, January 1977
  • Author
  • Model page created by Pier Antonio Aluffi. See "Data change" for further contributors.

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