338 Keysight N9915-90020 User’s Guide
Electromagnetic Interference (EMI) Measurements – Option 361
EMI Measurements Mode Settings
— Dwell /Point (Active when the CISPR Measurement type == CISPR
Band Scan or CISPR Zoom Scan.) Specifies a settling time (in
seconds) between sweeps.
—
SwpAcquisition – (Active only for Fast SA Scan) Specifies a the
number of sweep acquisitions. Press manual to enter a sweep
acquisition value. (Default = Auto). Learn more, see
Chapter 9 and
then
“Sweep Acquisition” on page 193.
—
APD Dwell Time – (Active only when the CISPR Measurement type =
APD Statistics.) Sets the time to acquire statistics each cycle, and
Trace Points (control grayed out) are derived from the total Amplitude
range displayed on the X axis.
Points
In the EMI measurements mode, the Points softkey is only active when the
Measurement CISPR softkey is set to Fast SA Scan. Otherwise EMI mode
automatically sets the points (Default = 401). Learn more, see Chapter 9 and
then
“Points ” on page 203.
Trace Display States (EMI Mode)
The behavior of EMI mode is similar to SA mode. This section describes the
softkeys that have similar, but also different behaviors than SA mode. Learn
more, refer to Chapter 9, “SA (Spectrum Analyzer) Mode (Option 233–Mixed
Analyzers)FUTURE.”
. See also “Marker Trace (IQA and SA Mode)” on
page 738
.
How to display the Trace States
—Press Trace 6
> Default All is measurement specific and returns all traces to
their default settings. For EMI mode the defaults are: Trace 1 (PosPeak T1),
Trace 2 (QuasiPeak T2), Trace 3 (EMI Average T3); Trace 4 (Off, but defaults
to Pos Peak).
For EMI measurements mode, this section defines the four trace state
choices for the Fast SA Scan and for CISPR Band Scan, CISPR Zoom Scan,
and APD Statistics choices. Also, this section defines the 4th trace display
state choices. Learn more, see
“How to set the EMI Traces” on page 339.
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