Helios FM 20/100 W, user manual– 12/2011
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SCA STATE
(CONF. STATE.SCA) – read/write
With this parameter, enable or disable the SCA. When the SCA is enabled or disabled, the SCA deviation is
automatically subtracted from or added to the audio deviation to maintain the same total deviation.
Off/On
CLIP
(CONF. DEV.CLIP) – read/write
With this parameter, set the MPX hard clipper to prevent any possibility of overmodulation on the modulator
itself. This process is carried out digitally right before the RF generation, and is therefore enabled on all the
inputs. If the deviation is greater than the configured value (in kHz), the MPX hard clipper is automatically
enabled. Unlike FM limiters/clippers used in audio processing, this clipper cannot be used continuously for it
generates a noticeable audio distortion. It is therefore best to set it at 0, or at the maximum authorized
deviation, plus a few kHz to ensure additional security with the audio processor.
From 0 to 200
5.4.8. STEREO ENCODER Menu
These parameters are available as CODER serial commands (see section 6.2.6).
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
RDS CH
(CODER.CURRENT.RDS) – read only
This parameter indicates the channel used by the modulator for the RDS, as set with the RDS IN parameter.
NONE, MPX1, MPX2 or INTERNAL
RDS OP
(CODER.RDS.OPERATION) – read/write
With this parameter, on loss of RDS in the MPX, add RDS either automatically or manually.
Auto or Manu
RDS IN
(CODER.SELECT.RDS) – read/write
With this parameter, set the RDS component source of the broadcast signal either with an external source or
with the internal encoder.
MPX1, MPX2 or INTERNAL
SCA IN
(CODER.SELECT.SCA) – read/write
With this parameter, set the SCA component source of the broadcast signal
MPX1 or MPX2
