Idler Monitor Acquisition

While acquiring data the traffic lights indicate the condition of the Idler being monitored.

* Mark - insert a marker into the CSV file (a single '*' in the Notes column)

* Analysis - show bargraphs for each of the four measurements instead of the overall traffic light indicator

* Notes - enter a descriptive note (using the alpha-numeric keypad)

* Alert Mute - Activating this suppresses the audio alert noise that is heard in headphones when the traffic lights indication moves from Green to Amber or Red. Useful during initial setup, but not recommended during normal headphone operation.

* Back - finish the measurement and return to the Setup screen
