Thrr - Agilent Technologies 4294A Programming Manual

GPIB Command Reference

THRR

THRR
Syntax
THRR <numeric>
THRR?
Description
Within the waveform analysis range specified with the "ANARANG" command on page
267, sets the condition on which peaks are defined among all maximal values and negative
peaks are defined among all minimal values: height (refer to Figure 16-9).
Figure 16-9 Condition of the peak/negative peak
If 2 measurement points having a value less than the maximal value minus height exist on
both left and right sides of a maximal value, and the maximal value is the maximum within
the range between those measurement points, it is considered as a peak. For example, for
maximal value A in Figure 16-9, there are 2 points on both left and right sides having a
value less than the maximal value minus height: measurement point A
the maximum within the range between A
On the other hand, for maximal value B, there are 2 points on both left and right sides
having a value less than the maximal value minus height: measurement point B
but B is not the maximum within the range between B
considered as a peak.
In the same way, if 2 measurement points having a value of the minimal value plus height
exist on both left and right sides of a minimal value, and the minimal value is the minimum
within the range between those measurement points, it is considered as a negative peak.
For example, for minimal value C in Figure 16-9, there are 2 points on both left and right
sides having a value larger than the minimal value plus height: measurement point C
C
negative peak. For minimal value D, there is no measurement point on the right side having
a value larger than the minimal value plus height, it is not considered as a negative peak.
Depending on the display format, the definition of height differs as shown below (in the
previous description, a measurement point having a value less than the maximal value
minus height (or a value larger than the minimal value plus height) means a threshold value
452
, and C is the minimum within the range between C
R
and A . Therefore, it is considered as a peak.
L R
and B . Therefore, it is not
L R
and C , it is considered as a
L R
and A , and A is
L R
and B ,
L R
and
L
Chapter 16