Single Frequency Measurement - Keysight N9038A Demo Manual

20 | Keysight | N9038A MXE EMI Receiver Self-Guided Demonstration - Demo Guide

Single Frequency Measurement

To measure discrete frequencies, you can use the meters and measure at marker
functions instead of scanning the whole range.
Meters
Meters can display up to three detectors simultaneously with current update values
on the bottom and peak hold values on the top. In the frequency scan measurement,
a blue vertical line represents the current frequency position of meters, which is also
the current frequency shared by other measurements in EMI receiver mode, such as
Strip Chart and monitor spectrum. The frequency of the meters can be at any position,
even outside the span displayed on the screen in the frequency scan measurement. This
differs from the monitor spectrum measurement, where the meters measure the center
frequency of the spectrum display.
In this demonstration, we will turn on three detectors and set parameters for meters to
measure the amplitude at the current EMI receiver frequency.
Meters Demo Instructions for MXE
Switch to EMI receiver mode
Set meters frequency
Turn on Meter 2 and Meter 3, and set detectors and limits for them
Note: For MIL-STD measurements, do not turn on Meters 2 and 3
and keep Detector 1 as defaulti
Set dwell time for meters
Note: For MIL-STD measurements, set dwell time to 15 ms
Set RBW for meters
Turn on auto range and auto preamp for meters
Reset peak hold
Note that the peak hold is not reset when changing meter frequency;
{Reset Peak Hold} can be used for peak hold reset if needed
Read values of meters
Figure 18. Expanded meters
Keystrokes
[Mode], {EMI Receiver}
[FREQ], {Frequency (Meters)}, tune to any frequency of interest
[Mode setup], {Meters Control}, {Meters}, {Select Meter}, {Meter 2}, {Meter On},
{Detector (Meters)}, {Quasi Peak}, {Limit On}, [3], [7], {dBuV}
[Mode setup], {Meters Control}, {Meters}, {Select Meter}, {Meter 3}, {Meter On},
{Detector (Meters)}, {EMI Average}, {Limit On}, [2], [7], {dBuV}
[Mode setup], {Meters Control}, {Dwell Time}, [1], {s}
[BW], {RBW (Meters) Auto}
Auto RBW will couple RBW setting to the EMC standard and meters frequency
[Mode setup], {Meters Control}, {Autorange}, {Autorange On}, {Auto Preamp On}
[Mode setup], {Meters Control}, {Reset Peak Hold}
Did you know?
The meters graph in Strip Chart
and monitor spectrum can be
enlarged by pressing [View/Display],
{Expand Meters On}. An example
of expanded meters in monitor
spectrum measurement is shown in
Figure 18.