3 functional description – Media Technology Systems STAGE 8.8 User Manual
Page 7
Page 7 of 22
Oct‐12
3 Functional Description
3.1 Signal Path
3.2 Analog Section
Each
analog
input
circuit
employs
a
fully
balanced
true
differential
topology
designed
to
maximize
CMRR
across
all
possible
input
connection
methods,
where
the
input
and
output
connectivity
has
been
designed
to
meet
AES48
standards
for
immunity
to
hum,
buzz
and
SCIN.
Each
input
stage
has
a
10kohm
input
impedance
and
can
accommodate
signals
of
up
to
+24dBu
peak,
where
the
input
channel
gain
is
adjustable
from
0dB
to
+60dB,
ie
–from
56dBu
(nominal)/+36dbu
(peak)
to
+4dBu
(nominal)+24dbu
(peak)
via
a
front
panel
mounted
rotary
potentiometer.
Each
input
channel
has
an
individual
front
panel
mounted
switch
that
form
phantom
power
(+24volts
DC).
Both
input
and
output
channels
have
front
panel
mounted
signal
(‐20dB
threshold)
and
peak
(‐3dB
threshold)
LED’s.
Each
output
channel
is
600ohm
impedance
and
drives
signals
of
up
to
+24dBu
peak.
3.3 Digital section
The
STAGE8.8
is
a
CobraNet™
interface
with
8
analog
Mic/line
input
channels
and
8
line
level
output
channels.
+ - G
+ - G