FM TRANSMITTER
TR
EM
1000
HE
DIG
PLUS
COMPACT
Technical Manual 1v2 November 2019
47
of the deviation, the value of the modulating signal will be indicated in dB, against the
nominal value set.
4) Ensure that the deviation measured does not exceed local regulations, then press the knob
to confirm the setting.
5) Using the knob, select
OK
to save the settings,
EDIT
to make further changes, or
ABORT
to
exit without saving the new settings, then press to confirm
- LIMITER setting
Used to limit the peak modulation at a maximum value.
The display shows the following:
•
Limiter
– followed by
OFF
if deactivated, or by a value expressed in dB, in reference to a
deviation of 75KHz (0dB = 75KHz)
•
Mpx
– measurement of the current peak deviation value, expressed in KHz (in the example,
0.0 KHz) in dB, in reference to a deviation of 75KHz (0dB = 75KHz)
In addition, the bar indicator graphically shows the current peak deviation value.
By changing the
Limiter
, you can set a maximum modulation value beyond which the limiter
will activate.
When the limiter begins to intervene, the modulation distortion increases. As such, the
modulation sensitivity should be adjusted so the limiter intervenes sporadically. Using this
approach, its operation is generally imperceptible.
- MODE setting
Used to define whether the transmitter operates in mono or stereo, and its pre-emphasis
value.
