Richardkrebs,
The measured performance is inferior to actual performance?
Wow and flutter can only be measured with an arm/cart. Timeline measures or illustrates absolute speed. Henry has shown that absolute speed doesn't deviate when using 3 arms simultaneously on his Victor.
W/F is measured with a test record 3150Hz tone. Output is checked for deviation from that frequency.
I think Thigpen must be referring to low torque belt drives, in which case a gnat landing on the arm or platter might upset speed stability.
Regards,
The measured performance is inferior to actual performance?
Wow and flutter can only be measured with an arm/cart. Timeline measures or illustrates absolute speed. Henry has shown that absolute speed doesn't deviate when using 3 arms simultaneously on his Victor.
W/F is measured with a test record 3150Hz tone. Output is checked for deviation from that frequency.
I think Thigpen must be referring to low torque belt drives, in which case a gnat landing on the arm or platter might upset speed stability.
Regards,