49
/
78
display when a new maximum value is generated.
4. Min Hold
Each point of the trace keeps displaying the minimum value in multiple sweeps, and updates the data
display when a new minimum value is generated.
Detector:
Set the detection mode of the current measurement and apply the detection mode to the
current trace. Optional detector types includes sampling, peak, negative peak, normal detection, and
average.
1. Sample
For each point on the trace, the sampling shows the transient energy corresponding to a fixed time
point (usually the first sampling point in this time period) in the corresponding time interval. Sampling
applies to noisy or noise-like signals.
2. Peak
For each point on the trace, peak detection shows the maximum value of the sampled data within the
corresponding time interval.
3. Negative
For each point on the trace, negative peak detection shows the minimum value of the sampled data
within the corresponding time interval.
4. Normal
Normal detection selects the maximum and minimum values of the sampled data segment in turn to
display, that is, for every odd number point on the trace line, the minimum value of the sampled data
will be displayed. For every even number point on the trace line, the maximum value of the sampled
data will be displayed.
The range of amplitude variation can be observed intuitively by using normal detection.
5. Average
For each data point, detector will take average value by sampling data in the time interval. The
average effect is different for different data types. The average type can set by
[Meas/Setup]
key.
Update
（
On/Off
）
: When the refresh is enabled, remove all the stored data in the selected trace and
continuously displays any signals in sweep time. When the refresh is disabled, hold and display the
amplitude data of the selected trace. The trace register will not refreshed with the sweep.
Display
（
On/Off
）
:
Set the switch of the selected trace.
Math Function:
Performs mathematical operations between traces or traces and a specified offset.
1. Off: Turn off the mathematical operation.
2. Power
（
A-B
）
: Calculating the power difference of operands A and B and stored it in the target trace.
During the sweep, the following calculation is performed for each point:
Trace=10log
（
10
A/10
-10
B/10
）
.
In the above formula, the parameter unit is the decibel value of logarithmic power. If the value of A
point is the maximum trace value, then the difference result is also the maximum trace value; If the
difference result is less than or equal to 0, the result is the minimum trace value.
