[BC] Cassette deck maintenance

[Phil Alexander]

What we did at Gates/Harris-ATC was load an Ampex mono
(there was no stereo then) alignment tape into a cart 
and put it in a machine. You could put that into one 
board input and an oscillator in another. You could zero 
beat the deck output with the oscillator, and if you 
wanted wow and flutter you could bridge a scope across 
both inputs and zero beat it to as close as you could 
get to a diagonal line and watch it wobble partially 
open. From this you could estimate the phase rotation 
of the wobble (wow & flutter).

BTW that was so long ago we didn't have a counter in the
Bloomington plant.

Phil Alexander, CSRE, AMD
 

-----Original Message-----
>From: Glen Kippel <glen.kippel at gmail.com>
>
>Yeah, you definitely have.  In Olden Tymes I would just put 
>an alignment tape in the machine and look at the output with 
>a frequency counter.  A lot faster that way.