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Crown Broadcast FM 20/100 W, user manual– 05/2013
Page 57
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FREQ
(INPUT.AUDIOGEN.FREQ) – read/write
With this parameter, set the internal generator audio frequency.
From 0 to 100000.00 Hz
5.4.8. Modulation
menu
These parameters are available as MEAS.DEV and CONF serial commands (see section 6.2.2 and 6.2.3).
RMS
(MEAS.DEV.RMS) – read only
This parameter indicates the average value of the transmitted signal’s excursion in kHz.
From -150 to +150 kHz
DEV MPX
(CONF.DEV.MPX) – read/write
With this parameter, set the maximum MPX deviation in kHz generated when the audio source is at the
nominal level. (The nominal level is set with the LEVEL parameter of the menus: LINE1, LINE2, MPX1 or
MPX2.) It is often set at 75 kHz but this value may vary according to the country and relevant regulatory
authorities. To ensure the sub-carrier levels remain stable, this parameter directly changes the audio
deviation.
From 0 to 150.00 kHz
DEV AUDIO
(CONF.DEV.AUDIO) – read/write
With this parameter, set the maximum audio deviation in kHz generated when the audio source is at the
nominal level (the nominal level is set with the LEVEL parameter of the menus: LINE1, LINE2, MPX1 or
MPX2). The audio deviation is set automatically when the MPX deviation parameter is set; however, it is
possible to set the audio deviation rather than the MPX deviation. Increasing or decreasing the audio
deviation affects the total deviation and thus automatically adjusts the MPX deviation. Make sure to avoid
overmodulation.
From 0 to 150.00 kHz
DEV PILOT
(CONF.DEV.PILOT) – read/write
With this parameter, set the 19 kHz pilot deviation. For countries modulating at 75 kHz, the pilot deviation
should be 10% of the total deviation, i.e. 7.5 kHz without RDS or 7.1 kHz if RDS is used.
From 0 to 25.5 kHz
DEV RDS
(CONF.DEV.RDS) – read/write
With this parameter, set the RDS sub-carrier deviation. The most widely used value is 4 kHz.
From 0 to 25.5 kHz