155-0078-00: Difference between revisions

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The 155-0078 and its test fixture were designed by [[John Addis]] for the [[485]] scope <sup>(Note 1)</sup>, which uses no less than 18 of these chips in various grades.  
The 155-0078 and its test fixture were designed by [[John Addis]] for the [[485]] scope <sup>(Note 1)</sup>, which uses no less than 18 of these chips in various grades.  


The rise time of each M84 was tested using the [[25ps Push-Pull Pulse Generator]],
The last two digits of the part number, the grade, correspond to a combination of DC and HF performance.
and parts were binned and were given part numbers with an appropriate speed suffix.
Each M84 was tested for DC performance and HF performance.
Each M84 was also tested for DC characteristics such as balance.
DC performance was tested using a custom fixture described below.
HF performance was tested using the [[25ps Push-Pull Pulse Generator]].


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