120
Chapter 2
Front-Panel Key Reference
Peak Search
F
ront-
P
ane
l K
e
y Ref
e
rence
To prevent the marker from identifying noise as
signals, reduce the noise floor variance to a value less
than the peak-excursion value by reducing the video
bandwidth or by using video averaging.
Key access:
Peak
Search
,
More
,
Search Criteria
Peak Threshold
Sets the minimum amplitude of signals that the
marker can identify as a peak. For example, if a value
of –90 dBm is selected, the marker moves only to peaks
that rise and fall more than the peak excursion value
above –90 dBm. Pressing
Preset
or turning the Power
on resets the excursion to 6 dB and the threshold to
−
90 dBm.
The value of the threshold appears in the
active-function block and on the lower-left side of the
display. The threshold level does not influence the trace
memory or marker position. The value of the peak
threshold level can be changed using the step keys, the
knob, or the numeric keypad. Pressing any digit, 0
through 9, on the numeric keypad brings up the
selected terminator menu.
Key access:
Peak Search
,
More
,
Search Criteria
Peak Search
Type
Allows you to select the peak search mode.
Key access:
Peak Search
,
More
,
Search Criteria
Max Value
When
Peak Search Type
is set to
Max
Value
, a peak search places a marker on
the highest peak, excluding the LO
feedthrough peak.
Key Access:
Peak Search
,
More
,
Search
Criteria
,
Peak Search Type
Excursion &
Threshold
When
Peak Search
is set to
Excursion &
Threshold
, a peak search places a
marker on a peak that meets the
Peak
Excursion
and
Peak Threshold
parameters. If
Peak Search Type
is set to
Excursion &Threshold
and no peak
satisfies the selected parameters, a
marker is placed at the center of the
trace, and the error message,
No Peak
Found
will appear. Refer to
, to remove the error
message.
Key Access:
Peak Search
,
More
,
Search
Summary of Contents for ESA-E E4401B
Page 4: ...4 ...
Page 35: ...35 Using This Document 1 Using This Document ...
Page 38: ...38 Chapter1 Using This Document What is in This Book Using This Document ...
Page 196: ...196 Chapter3 Programming Fundamentals Overview of RS 232 Option 1AX Programming Fundamentals ...
Page 393: ...Chapter 6 393 Menu Maps Alpha Editor Menu Menu Maps Alpha Editor Menu ...
Page 394: ...394 Chapter6 Menu Maps AMPLITUDE Y Scale Menu Menu Maps AMPLITUDE Y Scale Menu ...
Page 396: ...396 Chapter6 Menu Maps Auto Couple Menu Menu Maps Auto Couple Menu ...
Page 397: ...Chapter 6 397 Menu Maps BW Avg Menu Menu Maps BW Avg Menu ...
Page 398: ...398 Chapter6 Menu Maps Det Demod Menu Menu Maps Det Demod Menu ...
Page 399: ...Chapter 6 399 Menu Maps Display Menu Menu Maps Display Menu ...
Page 400: ...400 Chapter6 Menu Maps File Menus 1 of 3 Menu Maps File Menus 1 of 3 ...
Page 401: ...Chapter 6 401 Menu Maps File Menus 2 of 3 Menu Maps File Menus 2 of 3 ...
Page 402: ...402 Chapter6 Menu Maps File Menus 3 of 3 Menu Maps File Menus 3 of 3 ...
Page 403: ...Chapter 6 403 Menu Maps Freq Count Marker Menu Menu Maps Freq Count Marker Menu ...
Page 404: ...404 Chapter6 Menu Maps FREQUENCY Channel Menu Menu Maps FREQUENCY Channel Menu ...
Page 405: ...Chapter 6 405 Menu Maps Input Output Menu Menu Maps Input Output Menu ...
Page 406: ...406 Chapter6 Menu Maps Marker Menu Menu Maps Marker Menu ...
Page 407: ...Chapter 6 407 Menu Maps Marker Menu Menu Maps Marker Menu ...
Page 408: ...408 Chapter6 Menu Maps Peak Search Menu Menu Maps Peak Search Menu ...
Page 409: ...Chapter 6 409 Menu Maps Preset Menu Menu Maps Preset Menu ...
Page 410: ...410 Chapter6 Menu Maps Print Setup Menu Menu Maps Print Setup Menu ...
Page 411: ...Chapter 6 411 Menu Maps Source Menu Menu Maps Source Menu ...
Page 412: ...412 Chapter6 Menu Maps SPAN X Scale Menu Menu Maps SPAN X Scale Menu ...
Page 413: ...Chapter 6 413 Menu Maps Sweep Menu Menu Maps Sweep Menu ...
Page 414: ...414 Chapter6 Menu Maps System Menu Menu Maps System Menu ...
Page 415: ...Chapter 6 415 Menu Maps Trace View Menu Menu Maps Trace View Menu ...
Page 416: ...416 Chapter6 Menu Maps Trig Menu Menu Maps Trig Menu ...
Page 426: ...426 Index Index Index ...