68 Keysight X-Series Signal Generators Error Messages
Error Messages
List of Error Messages
only one modulation at a time. If a modulation requests a source
while it is in use by an active modulation, the first modulation is
turned off, and the second modulation is turned on.
-221 Settings conflict; External data cannot be selected for multiple
channels. PN9 is automatically selected for {name}.
The current hardware only supports one external data source at any
given time. The <CHANNEL NAME> data source has been changed
PN9, the default data source.
-221 Settings conflict; The external input attenuator cannot compensate for
the low signal voltage on the analog I/Q inputs.
As the voltage level on the external I/Q inputs is decreased, the
external input attenuation also decreases to keep the I/Q modulator
voltage level constant. When the attenuator reaches zero, it can no
longer provide compensation for the input voltage and further
decreases in input voltage will result in decreased power out of
the I/Q modulator. If the ALC is off this will be observable in the
RF output power. If the ALC is on, the ALC will compensate for the
decreased input voltage and there will be no observable change in
RF output power. For very low voltages the ALC will not be able to
compensate and the RF output power will become unleveled.
-221 Settings conflict; FFCH/OCNS and QPCH cannot be on at the same time.
QPCH has been turned off.
QPCH is generated using both channel 3 and 4. Channel 3 has been
turned on to generate FFCH or OCNS. Channel 4 can no longer
generate QPCH. Therefore, QPCH must be turned off.
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