The start frequency cannot be set less than 2 MHz when the internal or external Bias Tee is turned On. Set the frequency to a value larger than or equal to 2 MHz, and then turn on the Bias Tee.
Bias Tee is not allowed for start freq < 2MHz.
Turn Off Bias Tee before changing the freq.
The internal or external Bias Tee cannot be turned on when the start frequency is set to less than 2 MHz. Turn off the Bias Tee, and then adjust the start frequency to the desired value less than 2 MHz.
Changing Source Power
Changing Source Power will affect the accuracy of the current calibration.
While Cal Correction is turned On, changing the source power level will affect the accuracy of the current calibration. The correction will remain On and can be used, but an indicator (?P) will appear next to the left‑hand status column (CAL: ON) to note that the current power setting is different from the one used during the calibration processes.
No valid calibration to change correction.
There is no valid calibration in volatile memory that can be used to turn Cal Correction On. A new calibration must be performed.
Cannot continue with calculating.
Cannot continue with calculating. Not all required cal steps are completed.
When performing a calibration, you must complete all of the required steps before applying the “Calculate and Finish Cal” step.
Bias Tee state cannot be changed during calibration.
While performing a calibration, and before completing all of the calibration steps, you cannot turn on the Bias Tee. You must wait till after all of the calibration steps are complete before turning on the Bias Tee. This precaution is enforced to protect the calibration components from getting damaged by the Bias Tee current.
Turning Bias Tee to OFF.
Bias Tee is turned on when a new calibration sequence is started. The Bias Tee is turned off to protect the calibration components. After all the calibration steps are completed, you can turn the Bias Tee back on as required.
Turning Bias Tee to OFF.
Turning Bias Tee to OFF. Recalling measurement does not match with current setup.
The recalled setup or measurement file does not match the current setup. To ensure DUT safety, the Bias Tee function is turned off.
Calibration will be lost after change.
Calibration will be lost after change. Press the button again to continue.
While performing a calibration, and before completing all the calibration steps, if you change any of the frequency parameters (start, stop, center, span) or the number of points, then the calibration must be invalidated.
Changes not allowed during calibration.
Changes not allowed during calibration. Press Esc to abort calibration.
Certain parameters (such as frequency and number of points) can be changed while the calibration process is underway. Changing these parameters is not allowed unless the calibration is aborted first.
Option 10 (Bias Tee) not enabled.
To turn on the internal or external Bias Tee, Option 10 must be enabled in the instrument. Contact your Anritsu Service Center to inquire about enabling this option.
No External Reference signal detected.
External Reference was switched to 10 MHz but no external 10 MHz signal was detected. The External Reference setting is turned back to Off. Check the external reference level and frequency, and then try again.
Limit is not available for this Graph type.
Limits are supported only for rectilinear graph types (not for Smith Charts, for example).