3-2
Preparation for use
3.4 Preparation for use
The male BNC plug of the Pulse Limiter must be connected to the RF input
socket of the EMI test receiver.
Pulse Limiter usage under some condition may affect the
measurement result in respect to test signal characteristics.
When test signal has very high pulses the Pulse Limiter may reach
saturation and affect measurement accuracy.
When very strong test signal is suspected the usage of a 10 dB or
more 50
Ω
attenuator in front of the Pulse Limiter is strongly
recommended.
A verify if Pulse Limiter is reaching saturation can be carried out simply
performing two measurement of the suspected strong signal, respectively
with and without a 10 dB, or more, 50
Ω
attenuator connected between test
signal and Pulse Limiter.
The measured test signal difference must match the attenuation
introduced: if the difference between the two measured signals is lower
than attenuator value it means that without using attenuator the Pulse
Limiter is reaching saturation, affecting therefore measurement accuracy.
In this case the final measurement must be carried out with attenuator
inserted taking into account the attenuator value in the test signal reading.
Before connecting Pulse Limiter to the associated test instrument,
ensure that an uninterruptible safety earth ground is provided from
the main power source to the EMI test receiver protective earth
connection.
To avoid hazardous electrical shock, prior to energizing either unit
and prior Pulse Limiter connection, verify that a common ground
exists between EMI test receiver and the equipment under test.
Any interruption or loosening of the protective earth ground
conductor, either inside or outside the units or in an extension cable
will cause a potential shock hazard that could result in personal
injury.
Verify the safety earth ground functionality before operation.
3.5 Equipment cleaning
Use a clean, dry non abrasive cloth for external cleaning of the Pulse
Limiter.
To clean the equipment do not use any solvent, thinner, turpentine,
acid, acetone or similar matter to avoid damage to external plastic
and surfaces.
A
WARNING
A
WARNING
A
WARNING
A
WARNING
