User's Manual

M7X and M7R Page 5-4 Maintenance
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Checking the Internal Frequency Reference
The radio can operate from an internal frequency reference, or from an external frequency reference
connected to the rear panel 10 MHz connector. To set the radio’s internal frequency reference, use the
following procedure.
(1) Connect a frequency counter to the front panel 10 MHz Reference Frequency Out connector;
Fig 5-1.
Fig 5-1 10 MHz Frequency Reference Out Connector
(2) Switch on the radio and from the display’s Home page select Key 8 – Radio Config.
(3) Using Key 9 and Key 10 to scroll up and down the configuration list, highlight Reference Select
as shown in Fig 5-2. Ensure Internal is selected. If external is selected, press Key 13 – Change;
then press Key 9 or Key 10 to display External; finally, press Key13–Store.
Fig 5-2 Internal Frequency Reference Selected
10 MHz Reference Frequency Out Connector