• Country
• United States of America (USA)

• Manufacturer / Brand
• Tektronix; Portland, OR

• Year
• 1984–1993 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 350332

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

• Wave bands
• - without

• Power type and voltage
• Powered by external power supply or a main unit.

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Counter / Timer Plug-In DC504A - Tektronix; Portland, OR

• Dimensions (WHD)
• 65 x 126 x 278.8 mm / 2.6 x 5 x 11 inch

• Notes

• The Tektronix DC504A is a 100 MHz, 6-digit frequency counter for the TM500 system. It replaces the DC504 (80 MHz, 5-digit).

  The DC504A adds a 6th display digit, extends the frequency range to 100 MHz and the single-shot resolution to 100 ns. There is also autorange and averaging as well as a PLL that multiplies frequencies from 10 Hz to 25 kHz by 100.

  In contrast to its predecessor, the DC504A has no digital outputs on the rear interface, only signal and clock inputs. There is no int/ext switch on the front panel (instead there is an internal jumper) and no RPM mode/jumper.

• Net weight (2.2 lb = 1 kg)
• 0.794 kg / 1 lb 12 oz (1.749 lb)

• Literature/Schematics (1)
• - - Manufacturers Literature (Instruction Manual DC504A Counter/Timer, 070-4291-00, Jan. 1983.)

• Author
• Model page created by Michael Ludwigs. See "Data change" for further contributors.

• Other Models

• Here you find 386 models, 374 with images and 92 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tektronix; Portland, OR