ZES ZIMMER LMG450, User Manual

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CE-Flicker measuring mode (option L45-O4) LMG450
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Per. This is the number of short term periods for the long term measurement. The standard
value is 12 periods for a long term time of 2 hours.
Figure 35: Measuring menu in CE-Flicker mode
7.1.2 Ztest/Zref tab
This is only available when EN61000-3-11 is selected.
With Ztest you have to enter your actual used test impedance in
Ω
.
With Zref you have to choose, if your reference impedance is (0.24+j0.15)
Ω
or (0.4+j0.25)
Ω
.
The values for d
c
, d
max
, P
st
and P
lt
are recalculated as described in EN61000-3-11:2000
7.2 Measuring ranges (Range)
The settings are the same like in ‘5.2, Measuring ranges (Range)’. Please note that the
standards require a continuous measuring without gaps. For that reason the auto range
function should be deactivated to prevent a range change, because this will cause a short
measurement with invalid values.
7.3 Definition of measuring values
The following basic definitions are used:
n
The harmonic order.
T The time of an integer number of the periods of the synchronisation signal. The integer
factor depends on the standard IEC61000-4-7. Actually 16 periods are measured.