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AMPTD Y Scale
NOTE The unit dBuA can also appear as an Antenna Unit. This will be used by customers
using current probes, because current probes are often supplied with conversion
tables that provide the transducer factors. When dBuA is used as an Antenna Unit
the normal conversion from power to amps for dBuA (based on the analyzer input
impedance) is not done, but instead the conversion is based solely on the
Correction that contains the transducer factors. This is what distinguishes dBuA as
a normal unit from dBuA as an antenna unit. When querying the Y-Axis unit, you
can query the Antenna Unit to distinguish between regular dBuA and the dBuA
antenna unit. If :CORR:CSET:ANT? returns NOC (for No Conversion), you are
using a normal Y Axis dBuA. If it returns UA you are using an Antenna Unit
dBuA.
dBpW
Sets the amplitude unit for the selected amplitude scale (log/lin) to dBpW.
Antenna Unit
When a Correction is turned on that uses an Antenna Unit, the Y Axis Unit changes to that Antenna Unit.
All of the keys in the Y-Axis Unit menu are then greyed out, except the Antenna Unit key. The unit being
used is shown on this key and is shown as selected in the submenu.
Key Path: AMPTD Y Scale, Y Axis Unit
Example: UNIT:POW DBUA
Dependencies: Grayed out if an Amplitude Correction with an Antenna Unit is ON.
Readback: dBμA
Initial S/W Revision: Prior to A.02.00
Modified at S/W Revision: A.02.00
Key Path:
AMPTD Y Scale, Y Axis Unit
Example: UNIT:POW DBPW
Dependencies: Grayed out if an Amplitude Correction with an Antenna Unit is ON.
Readback: dBμA
Initial S/W Revision: A.11.00
Key Path:
AMPTD Y Scale, Y Axis Unit
Dependencies: Grayed out if no Amplitude Correction with an Antenna Unit is on.
Readback line: Currently selected unit
Initial S/W Revision: A.11.00