LEM NORMA 5000 - Channel Configuration

Configuration
28 Power Analyzer NORMA 4000, NORMA 5000
EO1111G REV G
The synchronisation source determines the frequency on which
the analysis is based. In factory configuration 1:W3, the
synchronisation source is U1, as this signal tends to be reliable in
most cases.
The following options are available:
- Input at device (channel 1 ... 6), current or voltage
respectively (U1 ... U6, I1 ... I6)
- Ext for external synchronisation signal (connection to port
for external synchronisation signal)
- OFF, if no synchronisation source is used (e.g. measuring
of direct current)
+
Note
To measure the start-up of a machine, you might opt for an external
synchronisation signal (0,2Hz to sample rate, max. 50V), as there is
otherwise no signal at the beginning of the measuring procedure,
and thus no measured values.
 Value in column Src is highlighted.
 Press Enter.
 Select a source or OFF and confirm with Enter.
The selected source or OFF is shown in column Src.
 Save the settings with SAVE in the desired configuration.
The trigger level is in percentages of the measuring range, and
measured from the end value of the range. In factory configuration
1:W3, the trigger level is set to 0%.
Note
By increasing the trigger level, the level of the average is also
increased. In other words: if there are several positive slopes in the
zero crossing, a higher modulated signal can be triggered.
 Value in column Level is highlighted.
 Press Enter.
 Enter the desired power and confirm with Enter.
The value is displayed in column Level.
 Save the settings with SAVE in the desired configuration.
The value entered here determines the zero crossing at which the
measurement begins, i.e. zero crossing with positive or with
negative slope. In factory configuration 1:W3, a positive slope is
set. The arrow symbol "
↑ " indicates to a positive slope; symbol " ↓ "
indicates a negative slope.
 Value in column Slope is highlighted.
 Press Enter.
 Select the desired arrow symbol and confirm with Enter.
The selected arrow symbol is shown in column Slope.
 Save the settings with SAVE in the desired configuration.
The low-pass filter enables you to modify signals with high
harmonic content (e.g. PWM) so that they are synchronised to the
resulting fundamental. This ensures that all measured values refer
Select
synchronisation
source
Set trigger level
Select slope
direction
Select lo
w
-pass
filter