Wheatstone TV-80, Техническое руководство

Страница: 29 / 120

M O N O M I C / L I N E I N P U T
page 2 – 5
TV80 / Sep 98
Main Module
Input section
The upper section of this input module selects between two mono
microphone and two mono line inputs. The microphone section pro-
vides a variable gain control, switched Mic 1 and Mic 2 pad circuits
(-20dB), and swit40V phantom power (labeled “V+”). The
electronically balanced line input section has a center detent input gain
control (with PCB-mounted calibration trimpots for fine adjustment).
The phase reverse switch affects both mic and line inputs. A patch point
INS switch (for both mic and line) allows insertion of any pre-patched
external processing gear (insert points are electronically balanced in
and out).
AUX Section
This section taps eight post-EQ auxiliary send signals from the
main input channel and routes them to the console’s send ACN busses.
There is a pre/post selector switch and an ON switch for each pair of aux
circuit. While aux pre/post switches normally switch before or after
both the channel fader AND channel On switch, special PCB-mounted
slide switches (four per module) permit dual AUX pairs to follow main
channel ON/OFF even when switched to “pre” (page 2-12).
PAN Control
This center-detent rotary control pans the module’s mono signal
left and right within assigned stereo submasters and masters signals.
Bus Assign
Each input module may have its output assigned to any combination
of the console’s two stereo MASTERS and/or eight mono
SUBMASTERS.
Equalization Section
A four-band EQ/filter section is included, employing 3 sweep
frequency peaking sections (each ±16dB with reciprocal curves) plus
sweep frequency (-12dB/octave slope) low pass (2.7KHz-26KHz) and
high pass (12Hz to 260Hz) filters. Note the three-band EQ and HI/LO
pass filter sections may be switched in and out separately.
Peak LED
A peak reading LED indicator lights to indicate overload conditions
within the channel circuitry (the indicator monitors both pre and post
fader points in the signal chain).
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
MIC
LINE
1 2
1 2
INSERT
Ø
1 2
1 2
1 2
3 4
5 6
7 8
EQ SOLO
CUE
P
R
E
P
R
E
P
R
E
P
R
E
C
LT
RT
P
A
N
1K
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
500
8K 400
3.5K
H
I
16 16
-
+
dB 16 16
LPF
HPF
3
0
3
11 11
15K
10K 4K
1K
16K 800
7K
-
+
dB 16 16
P
K
9K
35
5K
25
6 2 0
8 1
5 1
70
26K
7K . 2
.5K 3
Hz
H I/LO
V+
40
PAD
7
7
60
5
4
dB
5
0 5
5
M
I
C
MI
L
I
N
E
dB
+
15
9
1
1
6
3
6
2
9
-
5
12
S
U
B
M
A
S
T
E
R
S
MASTERS
ASSIGN