27
IM 701450-61E
5.
Use
jog shuttle & SELECT
to set the trend source waveform, trend target
parameter (measurement parameter), scaling, and unit of computed waveform
Math1. Then, execute the trend display.
Select Trend.
Select the target trend waveform.
Select the trend parameter (measurement parameter).
Execute trend display.
Set the scaling used to display computed waveform Math1 or
Math2 to Auto (auto scaling) or Manual (manual scaling).
If scaling is set to Manual, set the vertical center line level on the
screen (voltage value if set to voltage) and the sensitivity (voltage
per division if set to voltage).
Set the unit of computed waveform Math1 or Math2.
Dialog box used to select the
trend parameter
Select the parameter shown in
yellow characters* on a
black background
.
* The parameter that is selected in the setup operation
(MEASURE menu) of the waveform parameter per cycle and
whose measured value is held after the execution of the
measurement is displayed in
yellow on a black background
.
If the characters are in yellow but the background is not black,
it is only selected as a measurement parameter. The
parameter does not have measured values per cycle.
If you reselect a parameter on the MEASURE menu after
executing the measurement, the measured value is not held.
To display a trend, measured values that are held must be
present.
6.
Press
ESC
. The Math1 Setup dialog box closes.
Trend Display Example
Target waveform for trend
Trend (computed waveform)
Explanation
Turning ON/OFF the Computed Waveform Display and Computed Waveform Label
See section 9.1 in the
DL7440/DL7480 User’s Manual IM701450-01E
. Computed
waveforms are displayed only when the computed waveform display is turned ON.
Operator
Trend
Effects of Scaling, Unit of Computed Waveform, and Linear Scaling
See section 7 in this manual.
Measurement Range
The measurement range is the same as the measurement range specified in the
automated measurement of waveform parameters. See section 10.6 in the
DL7440/
DL7480 User’s Manual
.
8 Displaying the Trend of the Measured Values of Waveform Parameters per Cycle
