Delaying Time Base 7B15

Tektronix Guernsey Ltd. ; St.Peter Port

  • Year
  • 1978–1990 ?
  • Category
  • Service- or Lab Equipment
  • ID
  • 320690

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

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • 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
  • Model: Delaying Time Base 7B15 - Tektronix Guernsey Ltd. ; St.
  • Shape
  • Chassis only or for «building in»
  • Notes
  • The Tektronix 7B15 is a 1 GHz delaying time base for 7000-series scopes, in particular, the 1 GHz 7104 (typically used with 7A29 vertical amplifiers and a 7B10 delayed time base).

    The 7B15 provides digital readout of delay and delta times. In effect, the 7B15/7B10 pair are speed-improved versions of the 7B85/7B80.


    Sweep 200 ms/Div to 2 ns/Div in 1-2-5 sequence, ×10 magnifier down to 200 ps/Div, variable to ×2.5
    Triggering to 1 GHz
    Jitter less than 30 ps at 1 GHz
    • Digital read-out of delay and delta times
    • Variable Trigger Holdoff
    • HF Sync mode


    A ramp generator is started when the trigger signal arrives. The delayed sweep is started when a comparator detects that the ramp has reached a control voltage, set by the front panel knobs. The control voltage is therefore proportional to the amount of delay and is measured using a 155-0185-00 4-digit DVM circuit, then displayed on the oscilloscope readout. The display, scaled in seconds, provides the operator with a precise readout of the delay.

    Other custom Tek ICs used: 155-0150-00 trigger detector, 155-0160-00 trigger amplifier.

    The 7B15 uses the +50 V supply provided by the mainframe. 

  • Price in first year of sale
  • 6,851.00 CHF
  • Mentioned in
  • -- Original-techn. papers. (Product & Preislist 1987)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (7B15 Operator's Instruction Manual First print Oct 1978, revised Oct 1983)
  • Author
  • Model page created by Detlef Boeder. See "Data change" for further contributors.

 Collections | Museums | Literature


The model Delaying Time Base is part of the collections of the following members.