User Manual
Connecting signals
To connect a transducer with a voltage output
These transducers contain active circuits that help to improve performance at high
bandwidth. They can be of the Hall e ffect or Rogowski coil type.
The procedure is s imilar to that of installing an external shunt as described above.
1. Follow the manufacturer’s instructions for the safe use and installation of
the transducer.
2. Connect the voltage output to the EXT AHI and EXT ALO terminals of the
PA3000 channel as above.
3. Set up the PA3000:
Press
Select Inputs and press
Select Shunt and press
Select External and press .
Press
to return to the measurement display.
4. Select and input a scale factor. These types of transducers are often rated in
terms of mV / A. For example a transducer with an output of 100 mV / A
is th
e equivalent of a 100 mΩ external shunt resistor. To convert the rated
scaling from volts-per-amp to the desired amps-per-volt, invert the value.
Using the above example, 100 mV / A is equivalent to 10 A / V.
Press
.
Select
Inputs and press .
Select
Scaling and press .
Select
External Shunt and press .
Use
to clear the entry.
Enter the new scale factor (such as 0.1)
Press
.
5. Press
to return to the measurement display.
The PA3000 is now ready to make measurements using a current transducer with
a voltage output.
PA3000 Power Analyzer User Manual 33