®1. LCD DisplayThe backlit LCD display of the ZonePro 640 provides the end-user with all the necessary con-trols including source selection, page steering, zone volume and mute.2. Parameter Select 1-3These three buttons (when pressed) are used in conjunction with the Data Wheel to selectand edit parameters.3. Data WheelThe Data Wheel is used to edit parameter values.4. Page Buttons 1-2The Page buttons are used to adjust the page signal path and can be used to steer paging toselected zones.5. Zone SelectThese buttons are used to select output zones for front panel control.6. Output MetersThe ZonePro 640 provides the user with four independent six-segment Lightpipe output metersthat range from -30 to +20 dBu. These meters monitor the signal level directly before the D/Aconverter.7.Threshold MetersThe threshold meters indicate that the threshold level has been exceeded within the outputCompressor, Auto Gain Control, or Limiter sections, and gain reduction may be taking placewithin the specific output channel.1. PC ConnectionThis DB-9 connection is used to communicate to the PC via RS-232 protocol.2. Power LEDThis LED (when lighted), indicates that the ZonePro 641 is currently powered.1 21.3 - Front Panel (641)1 2 3 4 5 6 71.2 - Front Panel (640)Getting Started Section 1ZonePro ™ZonePro™ User Manual 3