Electronic Counter TF 2401

Marconi Scientific Instrument Co. LTD.,The; London

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  • Year
  • 1964 ?
  • Category
  • Service- or Lab Equipment
  • Radiomuseum.org ID
  • 339672

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

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Wave bands
  • Wave Bands given in the notes.
  • Power type and voltage
  • Alternating Current supply (AC)
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Electronic Counter TF 2401 - Marconi Scientific Instrument
  • Shape
  • Tablemodel, low profile (big size).
  • Dimensions (WHD)
  • 0 x 5.25 x 0 inch / 0 x 133 x 0 mm
  • Notes

  • The Marconi TF 2401 counter is a basic instrument into which plugs a frequency range unit and a function unit.

    The plug-in units at present available are a 50 MHz frequency range unit (TM 7557), a counter-timer function unit, and a 500 MHz converter unit (TM 7558).
    When used with these units the instrument performs the following basic measurements: Frequency, period, multiple periods, time interval, frequency ratio, and many other instructions.
    Features include an 8-digit read-out with memory.

    Abridged Specifications

    Basic Counter TF 2401

    DISPLAY: 8 digits in line, with memory.
    GATE TIMES (frequency measurement): 1 µsec to 100 sec in decade steps, instrument reads in c/s, kc/s, or Mc/s, with automatic decimal point indication.

    STANDARD FREQUENCY STABILITY:

    + 2 parts in 10' short term.
    ± 1 part in 103 per day.

    50 Mc/s Range Unit TM 7557
    (Input Channel A)

    RANGE: 1 C/S to 50 Mc/s.
    SENSITIVITY: 0.1 V RMS., 10 c/s to 50 Mc/s.
    INPUT IMPEDANCE: Approximately 500 kΩ shunted by 25 pF.

    Counter Timer Unit TM 7558
    (Input Channels B and C)

    RANGE: 0 to 10 MC/S.
    SENSITIVITY: O.1 V RMS. 1 c/s to 10 Mc/s.
    INPUT IMPEDANCE: Approximately 1MΩ shunted by 30 pF.

    PERIOD AND TIME INTERVAL MEASUREMENTS:

    TIMING SIGNALS: 1 c/s to 10 Mc/s in decade steps.
    The instrument reads in sec, msec, or µsec, with automatic decimal point indication.

    MULTIPLE PERIOD MEASUREMENT:

    TIMING SIGNALS: 1 Mc/s or 10 Mc/s. The instrument reads in µsec with decimal point indication.

    MULTIPLYING FACTOR: (Multiple periods and multiple frequency ratio measurements) 10 to 108 in decade steps.

     

  • Mentioned in
  • “Electronic Engineering”, volume 36, June 1964.
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Marconi Instrumentation Vol. 9 No. 6, June 1964, Pages 132-138)
  • Author
  • Model page created by Pier Antonio Aluffi. See "Data change" for further contributors.

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