Delay line: Difference between revisions

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Soon after, the [[517]] appeared, using a coaxial cable as a delay line.
Soon after, the [[517]] appeared, using a coaxial cable as a delay line.
7000-series scopes use special twin-lead delay cables.  The delay line in the [[519]] is a large
7000-series scopes use special twin-lead delay cables.  The delay line in the [[519]] is a large
coil of low-loss air-dielectric rigid coax.
coil of low-loss air-dielectric semi-rigid coax.


Some delay lines are at the input.   
Some delay lines are at the input.   
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There are four main ways delay lines are implemented
There are four main ways delay lines are implemented
in Tektronix scopes:
in Tektronix scopes:
* Coaxial cable: [[517]], [[4S1]], [[1S1]], [[519]]
* Conventional coaxial cable: [[517]], [[4S1]], [[1S1]]
* twin lead
* Semi-rigid coax: [[519]], [[113]]
* twisted pair
* Unshielded helically wound differential transmission line: [[581]], [[585]]
* Helically wound differential transmission line inside braided shield: [[545|545B]], [[547]]
* L-C: [[511|511AD]], [[513|513D]], [[541]], [[545]], [[551]], [[555]]
* L-C: [[511|511AD]], [[513|513D]], [[541]], [[545]], [[551]], [[555]]

Revision as of 20:10, 13 February 2012

The first Tektronix scope to contain a delay line was the 513D, which uses an L-C network. Soon after, the 517 appeared, using a coaxial cable as a delay line. 7000-series scopes use special twin-lead delay cables. The delay line in the 519 is a large coil of low-loss air-dielectric semi-rigid coax.

Some delay lines are at the input. Some are between amplifiers. Some, such as the in the 516, are between the final amplifier and the CRT vertical deflection plates.

Delay lines have a similar purpose in sampling scopes.

There are four main ways delay lines are implemented in Tektronix scopes:

  • Conventional coaxial cable: 517, 4S1, 1S1
  • Semi-rigid coax: 519, 113
  • Unshielded helically wound differential transmission line: 581, 585
  • Helically wound differential transmission line inside braided shield: 545B, 547
  • L-C: 511AD, 513D, 541, 545, 551, 555