4S2 Pulser: Difference between revisions

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The '''Tektronix 4S2 Pulser''' is a portable fixture used for field texting of the [[4S2|4S2 dual-channel sampling plug-in]] (for the [[661]] scope).
The '''Tektronix 4S2 Pulser''' is a portable fixture used for field testing of the [[4S2|4S2 dual-channel sampling plug-in]] (for the [[661]] scope).


It is run off a pair of 22.5 V batteries.  A 100 kHz oscillator built with a [[2N964]] transistor drives a 100 mA, 6 pF [[tunnel diode]].   
It is run off a pair of 22.5 V batteries.  A 100 kHz oscillator built with a [[2N964]] transistor drives a 100 mA, 6 pF [[tunnel diode]].   
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The 4S2 is supposed to display a rise time of no more than 105 ps using this pulser.
The 4S2 is supposed to display a rise time of no more than 105 ps using this pulser.


The 4S2 pulser is similar to a slightly later instrument, the [[067-0513-00]].
==Links==
==Links==


* [[Media:Tek 4s2 pulser.pdf|Tektronix 4S2 Pulser Description (PDF, needs OCR)]]
* [[Media:Tek 4s2 pulser.pdf|Tektronix 4S2 Pulser Description (OCR)]]
 
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[[Category:Calibration fixtures]]
[[Category:Calibration fixtures]]
[[Category:Pulse generators]]
[[Category:Pulse generators]]

Latest revision as of 12:59, 10 March 2024

The Tektronix 4S2 Pulser is a portable fixture used for field testing of the 4S2 dual-channel sampling plug-in (for the 661 scope).

It is run off a pair of 22.5 V batteries. A 100 kHz oscillator built with a 2N964 transistor drives a 100 mA, 6 pF tunnel diode. The output signal is delayed by 30 ns through a length of RG-174 cable to allow for pre-triggering.

The 4S2 is supposed to display a rise time of no more than 105 ps using this pulser.

The 4S2 pulser is similar to a slightly later instrument, the 067-0513-00.

Links

Pictures

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