Test Pattern Generator GM2887/D

Philips; Eindhoven (tubes international!); Miniwatt

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  • Year
  • 1951–1953
  • Category
  • Service- or Lab Equipment
  • Radiomuseum.org ID
  • 145203

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

 Technical Specifications

  • Number of Tubes
  • 12
  • Wave bands
  • Wave Bands given in the notes.
  • Power type and voltage
  • Alternating Current supply (AC) / 110; 125; 145; 200; 220; 245 Volt
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Test Pattern Generator GM2887/D - Philips; Eindhoven tubes
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 335 x 220 x 165 mm / 13.2 x 8.7 x 6.5 inch
  • Notes

  • The Philips GM2887 test pattern generator was available in 4 versions:

    • GM2887/A, 40 ... 80 MHz, negative modulation, FM sound
    • GM2887/B, 40 ... 80 MHz, positive modulation, AM sound
    • GM2887/C, 170 ... 220 MHz, negative modulation, FM sound
    • GM2887/D, 170 ... 220 MHz, positive modulation, AM sound

    Each version could be ordered for 405, 441, 625 or 819 lines.

    Sound modulation: 200 - 400 Hz, 50% in AM, ca. 50 kHz in FM
    RF output: 72 Ω, 100 - 200 mV, 2 - 4 mV
    Video output: 120 Ω, 1.4 V

    Uses 10 tubes ECL80.
    Metal case, grey paint. Leather handle.

  • Net weight (2.2 lb = 1 kg)
  • 7 kg / 15 lb 6.7 oz (15.419 lb)
  • Mentioned in
  • -- Original prospect or advert (Radio Constructeur et Depanneur 1953)
  • Literature/Schematics (1)
  • Der Elektroniker, 3. Jahrgang, Heft 11, Nov. 1951, S. 345
  • Literature/Schematics (2)
  • -- Original-techn. papers.
  • Author
  • Model page created by a member from A. See "Data change" for further contributors.

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