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?? On a standard scope with the same signal on X and Y in phase is a line at 45degrees to the right, 180degrees out of phase is a straight line tilted 45 degrees to the left, a circle is 90 degrees out of phase. This assumes equal phase response of of the X and Y amplifiers in the scope.
??? If there is drift the pattern will rotate.

On 10/10/2017 7:38 AM, Bob Bownes bownes@... [hp_agilent_equipment] wrote:

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Another is feed one into X, one into Y of an oscilloscope. In phase is a circle. Out of phase is a diagonal line.?

frequency multiples will show pretty patterns from your favorite SciFi movies of the 50's and 60's.

--
Richard Knoppow
dickburk@...
WB6KBL