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Old 16th Nov 2019, 10:13 am   #2
RogerEvans
Hexode
 
Join Date: Oct 2014
Location: Wiltshire, UK.
Posts: 381
Default Re: Oscilloscope delay line question

I suspect your delay line is 95 nanoseconds rather than microseconds but that is just nit-picking.

The precise value of the delay time is not at all critical, it is just that it has to be long enough for the trigger and time base circuitry to start the sweep before the signal reaches the Y plates. A 95 nsec delay in ordinary coax would be something like 70 feet long and the delay lines have to be specially constructed with two wound centre conductors to slow down the speed at which the signal propagates. You just need to make sure that you don't do too much damage in removing the material you need to make a new connection. I have to admit I have never actually opened up a delay line so proceed with care.

Regards,

Roger
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