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Crown Broadcast FM 20/100 W, user manual– 05/2013
Page 59
Crown Broadcast, a division of International Radio & Electronics Corporation 25166 Leer Drive, Elkhart, Indiana, 46514-5425 USA
Ph +1 (574) 262 8900
Ex 3: inject stereo MPX with:
Audio = 67.5 kHz
Pilot = 7.5 kHz
If the RDS is disabled:
Audio = 67.5 kHz
Pilot = 7.5 kHz
With internal RDS:
Audio = 67.5 kHz
Pilot = 7.5 kHz
RDS = 4.0 kHz
!
The total modulation 67,5+7,5+4,0 = 79 kHz is too high!
5.4.9. Stereo Encoder menu
These parameters are available as CODER and CONF serial commands (see sections 6.2.6 and 6.2.3).
MO/ST
(CODER.MOST) – read/write
With this parameter, set the stereo generator in mono or stereo mode. For mono, there are 3 options: Left
channel broadcast in mono (Mono_L), right channel broadcast in mono (Mono_R), the sum Left+Right
broadcast in mono (Mono). Otherwise left and right channels are broadcasted in stereo.
STEREO, MONO, MONO_L or MONO_R
AUDIO CH
(CODER.SELECT.AUDIO) – read only
This parameter indicates the channel used by the modulator for the audio, as set with the INPUT.SELECT
menu.
NONE, AUTO, LINE1, LINE2, MPX1, MPX2 or GENE
PHI 19k
(CONF.PHASE.PILOT) – read/write
With this parameter, set the pilot sub-carrier phase. We recommend setting it at 0°.
From -180° to +180°
19k OUT LEVEL
(CODER.19KOUT.LEVEL) – read/write
With this parameter, enable/disable the rear panel 19 kHz clock and set its output level. 0=off; between 1
and 7: set a level between 0.9 and 1.1 V peak-to-peak. 5 corresponds to 1 V.
From 0 to 8 V