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Contact numbering rules for tektronix cam and rotary switches


 

Dear all,
I am trying to fix a Tek 577 and would like to check the operation of some specific contacts of the Step Offset Ampl cam switch as well as the 177 Vertical Cuurent/Div rotary switch
I can see from the schematics that the contacts in the cam switches are numbered.
Can anyone tell me what is the convention used?
Front to bottom?
For the rotary switches there are numbers and the letters F or R, which I suppose mean front and rear of each wafer that is numbered.
So 1F would mean the contacts on the front of the first wafer.
Again, what is the convention used?
Thanks

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