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NORMA 6003/NORMA 6003+/NORMA 6004/NORMA 6004+
Users Manual
Item
Cur. Range
Ext. Sensor
Cur. Ratio (A/A, V/A)
Cur. Line Filter
18
Table 7. Range Configuration (cont.)
Current range options:
•
Shunt: Auto, 0.1A, 1A, 10A (when "Ext. Sensor" is not selected)
•
Ext. Sensor: Auto, 0.1V, 1V, 10V (when "Ext. Sensor" is selected)
Choose whether to use an external sensor.
When the external sensor is selected/deselected, you must reset the current
range.
If an external sensor is not selected, the current signal is directly connected
to the current channel of 10A, and the current is measured via the internal
shunt.
If an external sensor is selected, the current is measured by connecting the
current signal of external sensor output to the BNC interface.
Scale of an external current sensor (CT). After setting the scale of the
external current sensor correctly, the Analyzer automatically calculates the
actual current value of the measured signal based on the current scale and
the measured value.
The ratio settings are, A/A or V/A.
If the internal shunt is selected, the current scale represents the ratio of the
actual current (A) to the input current (A) on the shunt (that is A/A).
If an external sensor (BNC) is selected, the current ratio represents input
voltage (V) on the BNC port to the ratio of the actual current (A) of the
connected sensor (expressed as mV/A).
For example, when connecting a current sensor probe with an output
sensitivity of 1 mV/A, which represents a 1:1000 ratio, the Cur. Ratio (V/A) on
the Analyzer should be set to 0.001.
Current signal filter options:
•
Off: No current filter is used.
•
650 Hz: Automatically turn on the line filter, and the cutoff frequency is
650 Hz. Use to observe the synthesis frequency signal of the frequency
conversion system.
•
10 kHz: Automatically turn on the line filter, and the cutoff frequency is
10 kHz. Use for anti-aliasing.
Inserting a current measurement circuit has a direct impact on current and
power measurements. When the line filter is turned on, the measurements
do not contain high frequency components. Noise from the frequency
inverter or distorted waveform can be removed.
Description
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