FM Transmitter
Sistemas Electrónicos S.A EM 100 DIG
Technical Manual - v1.2 - November 2005 26
uncertainty. In this case the MPX level reading will anyway produce correct overall modulation
measure.
MENU # 04:LEFT &RIGHT SIGNAL LEVELS SEEN AS ANALOG MOVING BAR
L
r
This screen shows the actual left and right peak modulation as two moving bars.A vertical line marks
0dB position and the same considerations as the previous menu are still valid.
MENU # 05:AUXILIARY SIGNAL MODULATION LEVEL (SCA,RDS)
aux -11.0 db
This screen shows the actual modulation due to an auxiliary (SCA,RDS) signal in dB referred to 7.5kHz
or 10% of max peak modulation.Usual level for SCA signal is 0dB (7.5kHz) while a standard RDS
modulation is set at -11.5dB (2kHz).
Command mode,with the 2nd level password authorization, permits to set auxiliary input channel
sensitivity. See menu #25.
MENU # 06:AUX,LEFT,RIGHT AND MPX LEVEL IN DB
aux l r mpx
00.0 0.0 0.0 0.0
This screen simultaneously summarizes the actual modulation in dB due to auxiliary, left, right and
multiplex signal as seen in their own menu screens.
MENU # 07:TRANSMISSION MODES AND FREQUENCY.
m=mono pr=off
fm 101.10 mhz
This screen shows the transmission mode,i.e."MONO R", "STEREO", "MONO L+R", "EXT MPX". It also
displays the preemphasis constant time and the transmission frequency.
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