Agilent Technologies E5071C Manual page 238

Since the "RF ranging" is hold during the measurement, the
•
system dynamic range of the E5071C will degrade by 6dB, as a
result of the 8-term calibration performed externally. However,
there is NO dynamic range degrade by 8-term error model
calibration with internal calibration of the ENA.
Example
Assume you perform 4-port TRL calibration on channel1, you need to send
following command before calibration. Also, you need to keep this state all
the time for calibration and measurement.
SYSTem:CORRection:STATe OFF 'system correction off
SERVice:ADJust:VIRTual:BRIDge:STATe OFF 'virtual bridge off
SERVice:ADJust:SENSe1:SWEep:RF:RANGe:PORT1:AUTO OFF 'RF ranging
mode to manual on port1
SERVice:ADJust:SENSe1:SWEep:RF:RANGe:PORT2:AUTO OFF 'RF ranging
mode to manual on port2
SERVice:ADJust:SENSe1:SWEep:RF:RANGe:PORT3:AUTO OFF 'RF ranging
mode to manual on port3
SERVice:ADJust:SENSe1:SWEep:RF:RANGe:PORT4:AUTO OFF 'RF ranging
mode to manual on port4
Once you preset the system, you need to resend all of the
•
above commands.
Once you save and recall the state using this method, you need
•
to resend all of the above commands except for system
correction off.
Measurement
237