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IN & OUT SETTINGS (FM VERSION) ENG
Page 30
1
Escape from the Output Level menu and enter the Output Mode menu.
2
Select the Peak Reference Tone option.
The Peak Tone identifies the maximum peak value of the audio and MPX signals reached by the processor while it is
operating. This peak corresponds to the maximum frequency deviation
. This allows you to set the levels for the entire sound
chain simply and safely.
The Peak Tone consists of a 500 Hz/ 0 dBm tone + a 19 kHz / - 20 dB pilot tone
(the pilot signal may be disabled by
selecting the Off option within the MPX Module menu before enabling the Peak Reference Tone mode).
3 Once you have enabled the Peak Tone, adjust the Mpx Output Level until You reach the desired
modulation deviation.
4
Select the Normal Operation option in the Output Mode menu
(Normal Operation mode allows a normal use of the equipment and all its functions)
NOTE: THE PROCESSOR FACTORY SETTINGS ARE 0 dB FOR BOTH INPUT AND OUTPUT.
TO ACHIEVE THE BEST AUDIO QUALITY, WE RECOMMEND NOT TO LOWER THE OUTPUT
LEVEL AND TO ADJUST THE EQUIPMENT CONNECTED TO THE PROCESSOR (STEREO
ENCODERS, EXCITERS, ETC.) RATHER THAN THE PROCESSOR ITSELF.
12.3.4 CALIBRATING THE PILOT LEVEL AND PHASE
The Mpx Module / Pilot Level menu allows you to adjust the amount of 19kHz pilot tone injected into the
composite signal (expressed in dB). Factory-default value is – 20 dB (+/- 7.5 kHz carrier deviation) compared to
the overall Stereo Composite MPX signal. Level may be adjusted within the range of -25 dB to -15.5 dB, in 0.1 dB
steps. Pilot tone may also be disabled by turning the jog-wheel anti-clockwise to Off.
The Mpx Module / Pilot Phase menu allows you to adjust the phase relationship between the 19 kHz pilot and
the 38 kHz modulator. This can be used to correct for inconsistencies among different transmitters. It may be
adjusted from -12.0 to + 12.0 degrees (Deg) in 1 deg steps
12.3.5 ENABLING SYNC OUTPUT
When required, Falcon 15 can supply TTL pilot synchro signal (19 kHz, square wave, 5 Vpp) on the Sync Out
connector.
To do this, enter the Mpx Module Setup / Output Sync menu and select Output Sync Enabled option.