Mirage Digital Evolution
AEV Broadcast Srl via della Tecnica 33, 40050 Argelato Bologna ITALY
www.aev.eu [email protected]
16
4.2.6
Page ANALOG OUTPUT
Using this mask, some important values and functions of the audio signal on the analog output
are determined.
•
FILTER 15 KHz
command: enabling/disabling the 15 KHz filter, typical of the frequency
modulation transmissions.
•
ON
: filter activation, the audio signal will be limited to the 20 Hz band up to 15 KHz;
•
50 us:
the preenphasis is setted to 50 usec.
•
75 us:
the preenphasis is setted to 75 usec.
•
OFF
filter deactivation, the audio signal is used throughout its spectral excursion, from 20 Hz
to 20 kHz. In this mode, the Pre-Phase selection is disabled.
By positioning the cursor on the box, you activate the mode modification by pressing the knob,
after selecting the desired mode (
ON / OFF
), the additional pressure sets the value indicated in
the box.
•
PREEMPHASIS
command: enabling/disabling the preephasis, typical of the frequency
modulation transmissions. With FILTER 15 KHz in OFF setting Preenfasis is OFF also.
•
ON
: Pre-phase activation, the pre-phasing will be applied to the audio signal
;
•
50 us:
the preenphasis is setted to 50 usec.
•
75 us:
the preenphasis is setted to 75 usec.
•
OFF
deactivation of the pre-phase, the audio signal will be deactivated.
By positioning the cursor on the box, you activate the mode modification by pressing the knob,
after selecting the desired mode (
ON/OFF
), the additional pressure sets the value indicated in
the box.
•
CLIPPER
: to adjust the value of Clipper, the range is from 0 to 40 (26 to manage the max
deviation to 75 KHz).
•
LEV
adjusts the output signal level. It allows to adjust the output signal from -12 dB to + 12
dB,
A horizontal bar graphically displays the adjustment;
The numeric value in dB is displayed in the box below.
By placing the cursor on the box, the modification of the mode is activated by the knob
pressure, then, with the rotation of the knob, the adjustment is made, by rotating
counterclockwise decreasing values are applied, clockwise, however, increasing values are
applied. The additional pressure sets the value indicated in the box; The next knob pressure
