For accurate results, the BTS Master must be calibrated at the ambient temperature after allowing for warm up time and before making any measurements. The BTS Master must be re-calibrated whenever the setup frequency changes or when a test port extension cable is added, removed or replaced. If FlexCal for 1-port was performed, frequency changes do not require re-calibration.
Users can perform a standard open, short, load cal or a FlexCal for 1-port measurements. FlexCal eliminates the need to perform multiple calibrations after changing the frequency. It is more time efficient than the standard cal and is recommended for troubleshooting. For optimum accuracy, the standard cal should be used. FlexCal is appropriate for large frequency spans but will less precise at very narrow spans due to the fixed number of calibration points used during the FlexCal operation.