Agilent Technologies 54657A, User Manual

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11
Press the Set 100% softkey to set the t1 marker to 0
°
and the t2 marker
to 360
°
. All readings (except second
∆
t display in seconds) are now
relative to the established t1/t2 marker positions.
•
t1 reads the phase the t1 marker has moved from established 0
°
position.
Negative readings indicate marker has moved away from the t2 marker.
•
t2 reads the phase the t2 marker has moved from established 360
°
position. Negative readings indicate marker has moved through the
established t1 marker position.
•
∆
t in degrees reads the phase difference between the t1 and t2 marker
repetitive to the established positions. Negative readings indicate markers
have crossed.
•
∆
t in seconds reads the time difference between the t1 and t2 marker
positions. Negative readings indicate markers have crossed.
Additional FFT Function Keys
When the FFT function is selected (refer to Math Functions), two additional keys
are available as follows:
Find Peaks Pressing this key sets Vmarker1 and the start marker (f1) on the FFT
trace peak with the highest amplitude and sets Vmarker2 and the stop marker
(f2) on the peak with the next highest amplitude. Marker values in dBV or
frequency (dependent on the active cursor)are automatically displayed at the
bottom of the oscilloscope screen. The difference in dBV (
∆
V) or frequency (
∆
f)
between the two peaks is also displayed.
Move f1 To Center Pressing this key changes the center graticule (or center
frequency) to the current f1 marker frequency. If f1 cannot be found, a message
is displayed on the screen.
Operating the Measurement/Storage Module
To make additional cursor measurements
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