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If you request it to execute such task again, re-press [2 -
DL
2]. When this function is activated, display line is
activated.
3.3.6.10 [2
3]
Get contents in track register 2 and track register 3
exchanged, meanwhile, set contents in track 2 and track 3
in display mode.
3.3.6.11 [1
3]
Get contents in track register 1 transferred to track register
3, and then set track 3 in display mode.
3.3.6.12 [2
3]
Get contents in track register 2 transferred to track register
3, and then set track 3 in display mode.
3.3.6.13 [Wave detection mode
When larger span is displayed, one pixel contains spectrum
information of relatively large sub-band, i.e. several
sampling points are on one pixel. Set wave detection mode
of wave detector to determine sampling values pixel
44
contains. Soft menu related with wave detection, including
[Auto], [Normal], [Positive peak], [Sampling], [Negative
peak], pops up by pressing this key.
Notes:
Select different wave detection modes according to actual
application, so as to ensure the accuracy of measurement.
Optional wave detection modes: positive peak value,
negative peak value, sampling value.
Selected wave detection modes are correspondingly
displayed in parameter icons in status bar on the left of
screen.
Table 3-2 Comparison of wave detection modes
Wave detection mode
Positive peak value
]
Negative peak value
measurement
Combination of normal wave detection and positive peak wave
detection: when span is more than 1MHz, it is in normal wave
Auto
detection mode; when span is less than or equal to 1MHz, it is
positive peak wave detection.
Positive peak value and negative peak value are alternately
Normal
displayed in this wave detection mode.
Positive peak wave detection guarantees no missing of any peak
signals, beneficial for measuring signals which are very close
to noise floor.
Sampling wave detection is beneficial for measuring noise
signals. Compared with standard wave detection mode, it is
Sampling
able to better measure noise.
In most situations, negative peak wave detection is used for
self-inspection of spectrum analyzer, seldom used for
measurement. It can well make modulation envelope of AM
signal reappear.
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