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Key Reference 5
N9340A User’s Guide 93
•Pos Peak
Obtains the maximum video signal between the last
display point and the present display point and
stores this value in memory. It is used primarily
when measuring sinusoidal (spectral) components.
When Positive Peak is selected, “P” appears in the
upper-left corner.
Key access: [TRACE] > {More (1 of 2)} > {Detector}
• Sample
Primarily used to display noise or noise-like
signals. It should not be used to measure the
accurate amplitude of non noise- like signals.
In sample mode, the instantaneous signal value at
the present display point is placed in memory.
When Sample detector is selected, “S” appears in
the upper-left corner of the display.
Key access: [TRACE] > {More (1 of 2)} > {Detector}
•Neg Peak
Provides the same functions as peak detector, but
selects the minimum video signal value. This
detector should not be used to measure the most
accurate amplitude. When Negative Peak is selected,
“N” also appears in the upper-left corner.
Key access: [TRACE] > {More (1 of 2)} > {Detector}
Average
Initiates a digital averaging routine that averages
the trace points in a number of successive sweeps
resulting in trace “smoothing”. Increasing the
average number will further smooth the trace. For
the information of the type of averaging please
refer to “Avg Type" on page 74.
The average is restarted when any of the following
occurs:
• A new average number is entered.