R.V.R. Elettronica SDC20, Technical Manual

Page: 9 / 44

SDC20 Stereo Digital Coder
R.V.R. Elettronica S.r.l. (Bo) Pag. 9
SECTION 1
SDC20 STEREO DIGITAL CODER
DESCRIPTION
1.1 EXTERNAL DESCRIPTION
The SDC20 is contained in 19" 1U rack. This stereo digital coder
is engineered for high performance stereo FM broadcasting.
It's an equipment that integrates in a cheap model, but without quality
compromises, all technical characteristics of the expansive Coders.
On the front panel there are: the Power ON/OFF luminous switch (8 Fig.1),
the two led bars for left and right channels (1-2 Fig.1) and a trimmer
for phase adjustment (14 Fig.1).
Moreover, there is a commands section with relative led indicators
composed of: a preenphasis command switch (3-9 Fig.1), a left channel
switch (4-10 Fig.1), a command to put in phase left and right channels
(5-11 Fig.1), a right channel switch (6-12 Fig.1), a 19 KHz tone selector
(7-13 Fig.1) and a trimmer for fine tuning of the phase.
On the rear panel there are: the mains voltage inlet (1 Fig.2), a MPX
output connector with its level selector (2-3 Fig.2), a RDS input
connector (4 Fig.2), a SCA input connector (5 Fig.2), a RIGHT input
connector with its level selector (8-9 Fig.2) and a LEFT input connector
with its level selector (6-7 Fig.2).
1.2 ELECTRICAL DESCRIPTION
This Stereo Coder uses a frequency sinthesized internal digital
circuitry that allows very linear modulation, high stereo separation,
high input level capability.
The input/output analog section of good quality integrates oneself with
digital system answering for high input dynamics, high signal/noise rate
and very low distorsion.
1.3 TECHNICAL SPECIFICATIONS
Refer to Table (A) for electrical specs and to Table (B) for
dimensional and environmental specs.