This message acknowledges that the red Emergency Stop button (on top of the PIM Master) has been pressed. Refer to Emergency Stop Button.
Warning! High Reflection from measurement path!
This message occurs when the connection to the test port produces large reflections back into the instrument. This can compromise measurement accuracy. To fix this error, check all junction connections, or remove the RF connection or component that is causing the high reflection. If a cable or antenna is connected, then it could be an indication of poor RF transmission capability.