> Calibration Procedures
> In Cable and Antenna Analyzer Mode, calibration is required when the “Cal Status Off” or “Cal Status X” message is displayed or when the test port cable has been changed. The following sections detail how to perform OSL and InstaCal calibration.

> Note | If a Test Port Extension Cable is to be used (recommended), it must be connected to the Site Master before calibration. Follow the same calibration procedures with the OSL components, the InstaCal module, or the External Sensor in place at the end of the test port extension cable.