Lectrosonics LCA16 Operating Instructions Manual page 5

ATTENUATION DIP SWITCHES (located behind front panel cover)
These switches are used to programs which microphone (or microphones) connected to the 16 LOGIC INPUTS will
trigger the "A" and "B" attenuation levels for each of the 16 output channels. Four banks of switches (eight
switches per bank) are allocated to each channel. Two of the switch banks (16 switches) trigger the "A" attenuation
level, the other two switch banks trigger the "B" attenuation level. The switch number is printed on the circuit board
alongside the switch assemblies (disregard the numbers printed on the switch assembly itself).
ATTENUATION LEVEL CONTROLS (located between the DIP switch assemblies)
These control the amount of "A" and "B" level attenuation for each output channel. "A" level attenuation always
takes priority over "B" level attenuation and, therefore, the "A" control must always be set to a higher setting than
the "B" control.
An enlarged view of the speaker #7 and #8 sections of the attenuation selection DIP switches and attenuation level
controls is shown below. The attenuation select switches provide the means to select which microphones will
attenuate each speaker and to what attenuation level. The output of each speaker amplifier may be attenuated
from 0dB to completely off by means of the two continuously variable preset adjustment potentiometers ("A" and
"B"). Therefore, each speaker may be attenuated by one or more microphones on either (or both) of the "A" or "B"
levels as shown in the examples on page 7 and 8.
SWITCH
NUMBERS
3A
0
1
1 1
2 2
2
3 O 3 O
3
P
P
4 4 4
E E
5 5 N 5 3B
N
0
6
6 6
7
7 7
8 8 8
0
1 1
9
1 0
2 2
1 1 O 3 O
3
P
P
4 A
12 4 4
E E
1 3 N N
5 5
4 B
0
1 4 6 6
1 5 7 7
1 6 8 8
3 A
0 5
1 1
9
2 2
O 3 O 3 O
15
P P
P
4 4
E
E E
5 N 5 N
N 3B
0 5
6 6
9
7 7
8 8 15
1 1 0 5
2 2 9
O 3 O 3 O
15
P
P P
4 4 4A
E E
E
5 N 5 N
N
0 5
6 6
9
7 7
8 8 1 5
4 B
ATTENUATION LEVEL
3 A 3 B
4A
3 A
1 1 0 5
2 2 9
O 3 O 3 1 5 O
P P P
4 4
E E
E
5 N 5 3 B
N N
0 5
6 6
9
7 7
15
8 8
1 1 0 5
2 2
9
O 3 3 O
O
15
P P
P
4 4 4A
E E E
N 5 N 5 N
0 5
6 6
9
7 7
15
8 8
4 B
LOGIC CONTROLLED AMPLIFIER.
ATTENUATION CONTROL POTS
5 1
1
9 2 2
O 3 O 3
1 5
P
P
4 4
E E
N 5 N 5
5
6 6
9
7 7
1 5 8 8
1
5 1
2
2
9
3 O
3
O
1 5
P
P
4 4
E E
5 N
5
N
5
6 6
9
7 7
1 5 8 8
3 A
1 0 5 1 1 1
1 1 1 1
2 2 2 2 9 2 2 2
2
O O O 3 O
3 3 3 O 3 3 O 3 3
1 5
P P
P P P P
4 4 4 4 4 4 4 4
E
E E E E
E
5 N 5 5 N 5 N 5 3 B N 5 N 5 5 N
0 5
6
6 6 6 6 6 6 6
9
7 7 7
7 7 7 7 7
1 5
8 8 8 8 8 8 8 8
1 1 9 1 1 0 5 1 1 9
2 2 1 0 2 2 2 10
2 9
1 1 O 3 O 3 11 O
3 O 3 O 3 3 1 5 O
P
P P P P
P
4 4 1 2 4 4 4 A 4 4 1 2
E E E
E E E
5 5 1 3 N
5 N 5 13 5 N 5 N N
N
0 5
6 6 14 6 6 6 6 1 4
9
7 7 1 5 7 7 7 7 15
1 5 8 8 1 6
8 8 1 6 8 8
4B
ATTENUATION LEVEL
4B
3 A
1 1 1 1 1 0 5 1 1 1
2 2 2 2 2 9 2 2 2
3 O 3 3 O 3 O 3 1 5 O 3 O 3 3 O
P P P
P P P
4 4 4 4 4 4
4 4
E E E E E
E
5 N 5 5 5 N 5 3 B 5 N 5 5 N
N N
0 5
6 6 6 6 6 6
6 6
9
7 7 7 7 7 7 7 7
15
8 8 8 8 8 8 8 8
1 1 9 1 1 0 5 1 1 9
2 2 1 0 2 2 2 2 1 0
9
3 O 3 1 1 O 3 3 O 3 O 3 1 1 O
O
15
P P P P P
P
4 4 1 2 4 4 4A 4 4 1 2
E E E
E E E
N N
5 5 13 N 5 N 5 N 5 5 13 N
0 5
6 6 14 6 6 6 6 14
1 5 9 1 5
7 7 7 7 7 7
8 8 16 15 8 8 16
8 8
4 B
Figure 3 - Dip Switch Detail
DIP SWITCHES
3 A
1 0 5 1 1 1 1 1
1
2 2
2 2 9 2 2 2
3 O 3 O 3 O 3
3 O 3 1 5 O 3
P P P P
P
4 4 4 4 4 4 4
E E E
E E
N N 5 5
5 N 5 3B N 5 5 5 N
0 5
6 6 6 6 6 6 6
9
7 7 7 7 7 7 7
8 8
8 8 15 8 8 8
1
1 1 0 5 1 1 9 1
2 2 2 2 1 0 2 2
9
O
3 O 3 3 O 3 1 1 O 3 3
15 O
P P P P
P 4 4
4 4 4A 4 4 1 2
E E E E
E
N N 5 N 5
5 N 5 N 5 5 13
0 5 6 6
6 6 6 6 14
9 1 5 7 7
7 7 7 7
8 8 15 8 8 16 8 8
4 B
ATTENUATION LEVEL
3A
1 1 1
1 1 0 5 1 1
2 2 9 2 2 2 2 2
3 O 3 O 3 O 3 3 O 3 O 3
15
P P P P P
4 4 4 4 4 4 4
E E E E E
5 N 5 3 B 5 N 5 5 5 N 5
N N
0 5
6 6 6 6 6 6 6
9
7 7 7 7 7
7 7
8 8 15 8 8 8 8 8
1 1 0 5 1 1 9 1 1
2 2 9 2 2 10 2 2
3 O 3 1 1 3 O 3
3 O 3 15 O O
P P P P P
4 4 4 A 4 4 12 4 4
E E E
E E
N N
5 N 5 N 5 5 13 N 5 5
0 5
1 4
6 6 6 6 6 6
9
7 7 7 7 15 7 7
8 8 15 8 8 16 8 8
4 B
4
3A
0 5 1 1
9 2 2
O 3 O 3
15
P P
4 4
E E
3 B N 5 N 5
0 5
6 6
9
7 7
15 8 8
0 5 1 1
2 2
9
O 3 O 3
15
P
P
4 A 4 4
E
E
5 5
N N
0 5
6 6
9
7 7
15 8 8
4B
SIGNAL
POWER
PRESENT
ATTENUATION LEVEL
5
4 6
3A
0 5 1
1
3 7
2
9 2
3 O 3
O
15
P P
4 4 2 8
E E
N
3 B N 5 5
0 5
6 6
1 9
9
7 7
15 8 8 0 10
1
0 5 1
MAIN LEVEL
2 2
9
O 3 O 3
15
P
P
4A 4 4
E E
N 5 N 5
0 5
6 6
9
7 7
15 8 8
4 B
LECTROSONICS, INC
POWER