26 | Keysight | N9038A MXE EMI Receiver Self-Guided Demonstration - Demo Guide
Figure 23. APD
Disturbance analyzer
One type of commercial conducted emissions measurement is called a discontinuous
disturbance, also known as click, measurement. Discontinuous disturbance parameters,
measurement methodologies, and limits for various product types are provided in CISPR
14-1. Examples of the types of products covered in this standard are home appliances,
power tools, toys, and vending machines.
The MXE includes a discontinuous disturbance measurement feature designed to
automate the process of collecting and analyzing emissions from products covered by
CISPR 14. In order to demonstrate this feature, an RF source capable of generating a
pulsed RF signal below 30 MHz (50 ms pulse width, 2 second pulse period and 90 dBuV
amplitude) is used to simulate a conducted emissions discontinuous disturbance signal.
Disturbance Demo Instructions for MXG Keystrokes
Preset signal generator MXG [Preset]
Set frequency 1.4 MHz and amplitude 90
dBuV
[FREQ], [1], [.], [4], {MHz}
[AMPLD], [9], [0], {dBuV}
Set pulse period 2 s,
pulse width 50 ms
Set pulse on
[PULSE], {Pulse Period}, [2], {s}
[PULSE], {Pulse Width}, [5], [0], {ms}
[PULSE], {Pulse On}
Set RF on and modulation on
Connect the signal generator with to Input 2
on the MXE
[RF on/off]
[Mod on/off]
The green lights on indicates RF and modulation on
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