Wheatstone TV-80, Technical Manual

Page: 37 / 120

S T E R E O L I N E I N P U T
page 2 – 13
TV80 / Sep 98
Stereo Line Inputs
General
SI-80 input modules accept and output stereo signals; each
module can select one of four stereo line level source signals.
Each input channel consists of three separate panels mounted
in a single mainframe position:
a) the main module itself (far right),
b) a fader panel directly in line with and below the main module
(physically separated by the console’s alpha-numeric source display
strip), and
c) an (optional) 8-bank preselector switching panel located
directly above each channel in the meterbridge overbank section.
Input channel audio I/O (input/output) connections are
made via two DB-25 multi-pin connectors (“A” upper; “B”
lower) located on the back rear panel of each main module.
Input channel logic and control signals are made through a DB-
9 “Control” connector directly below the two DB-25 audio
connectors (see page 2-35). An additional DB-9 connector,
“mute follow”, is mounted on each rear panel; it is used to allow
preselector sources to activate the console’s four mute/tally
signals.
Note console preselector panel switches do not control
audio directly. Instead, they send control pulses to separate
rackmounted switching cages (“Smart Select
® ” cages). Actual
audio source signals are wired directly to the rackmounted
Smart Select
® cages (via rear chassis-mounted DB-25 connec-
tor pairs); the cages then feed selected source signals back to the
main input modules.
For a better understanding of the text that follows, please
refer to the signal flow diagram on page 19 of the Technical
Drawings.
PRESELECTOR
FADER PANEL
C
1 2
1 2
3 4
5 6
7 8
P
K
EQ SOLO
CUE
RT
L BA
M
O
D
E
L
T
R
T
S
T
LT
L
O
W
-
+
3
0
3
11 11
dB
dB
Hz
900
600 250
60
450
M
I
D
3
0
3
11 11
dB
Hz
7K
5K 2K
.5K
8K 400
3.5K
H
I
3
0
3
11 11
15K
10K 4K
1K
16K 800
7K
16 16
-
+
dB 16 16
-
+
dB 16 16
9K
35
5K
25
6 2 0
8 1
5 1
70
26K
7K . 2
.5K 3
LPF
HPF
Hz
H I/LO
1K 40
M
N
SI
L
1 2
3 4
INSERT
Ø
9
1
6
3
0
3
6
5 1
Ø
L
I
N
E
2
L
R
-
+
9
1
6
3
0
3
6
2
T
R
T
-
dB
dB
+
15
8
0
9
7
6
5
4
3
2
1
0 1
8
0
9
7
6
5
4
3
2
1
0 1
8
0
9
7
6
5
4
3
2
1
0 1
8
0
9
7
6
5
4
3
2
1
0 1
8
0
9
7
6
5
4
3
2
1
0 1
8
0
9
7
6
5
4
3
2
1
0 1
8
0
9
7
6
5
4
3
2
1
0 1
8
0
9
7
6
5
4
3
2
1
0 1
A
U
X
1
A
U
X
2
A
U
X
3
A
U
X
4
A
U
X
5
A
U
X
6
A
U
X
7
A
U
X
8
O
N
O
N
O
N
O
N
P
R
E
P
R
E
P
R
E
P
R
E
1
9
5
12
1
9
5
12
S
U
B
M
A
S
T
E
R
S
MASTERS
ASSIGN
15
12
-
-
-
-
3
0
3
+
-
6
9
VU
STEREO INPUT
28
0
5
10
15
20
30
40
50
60
70
00
READY
MUTE
A
B
C
D
M
I
X
M
I
N
U
S
8
7
6
5
4
3
2
1
M
U
T
E
G
R
O
U
P
S
ON
SUM