Details (Frequency Reference)

Click the arrow to open the Details portion of the Frequency Reference dialog box, listing the external reference state for each module. The state includes the presence or absence of an external reference signal and whether the module is locked to that signal.

A red X ( $image\redX.jpg$ ) next to the hardware indicates that the hardware is not properly configured and locked. In this case, the measurement hardware is not all referenced to the same frequency source. To change the configuration or lock status, click the Configure button in the corresponding tab in the Select Hardware dialog box.