Product Manual

Product Manual for Tornado Radio Unit
34
7.5 REFERENCE CALIBRATION
For the radio to maintain an accurate frequency reference calibration of the radio’s frequency reference is
recommended to be checked after three years.
7.5.1 EQUIPMENT REQUIRED FOR REFERENCE CALIBRATION
• An accurate 10 MHz source is needed, with a level between -5 and +20 dBm
• A Mimomax GPIO/Ref/Alarm cable
• A connection to the radios CCMS
7.5.2 HOW TO CALIBRATE THE REFERENCE
1. Feed the 10 MHz source into the reference inputs of the GPIO/Ref/Alarm connector (Brown and Red wires
on the Mimomax GPIO/Ref/Alarm cable). Note: the reference signal is differential, but it does not normally
cause any problems if a non-differential signal is used, treat one of the differential connections as ground
in this case.
2. In CCMS, navigate to ‘Calibration’ > ‘Reference Calibration’.
3. Click ‘Start’.
If the calibration is successful the message, ‘A 10 MHz reference has been found. The calibration process
was successful’ will be displayed.
Reference calibration