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AM8
Installation
Installing the AM8 properly is simple, and only requires
attention to a few issues. The AM8 should be used in
a grounded metal rack. If only one AM8 is being used,
it should be placed in the Master mode, using the rear
panel switch. Erratic performance will result if the unit
is in the Slave mode, but no damage will be done to the
unit. Proper operation will be restored when the unit
is switched to the Master mode. If multiple AM8s are
used together, the first AM8 (i.e. the one with Expansion
In port used but not the Expansion Out port) should
be switched to the Master mode, while all other AM8s
should be in the Slave mode. Figure 2 shows the cor-
rect interconnection for multiple AM8s.
Microphone connections should be made with good
quality braid or foil shielded twisted pair. The shield
should be used for the ground (Pin 1) connection. If an
unbalanced signal is used, the unbalanced signal lead
should be connected to the "+" input terminal, while the
unbalanced ground lead should be connected to both
the "-" and ground terminals of the input connector.
Output connections to the Main Out connector can be
made balanced or unbalanced. If an unbalanced con-
nection is desired, simply connect the unbalanced sig-
nal lead to the "+" output terminal, and the unbalanced
ground lead to the output ground terminal. Leave the "-"
output terminal unconnected.
Access to the Remote Level Control port is accom-
plished using the DB-15 connector (supplied).
4
PWR
EXPANSION
IN
M
S
A
(CH40)
S
L
T
A
RS232
OUT
IN
E
V
20 VAC
R
E
Master
Switch in
MASTER Position
PWR
EXPANSION
IN
M
A
S
(CH40)
S
L
T
A
RS232
OUT
IN
E
V
20 VAC
E
R
Slave
Switch in
SLAVE Position
PWR
EXPANSION
IN
M
A
S
(CH40)
L
S
A
T
OUT
IN
RS232
E
V
20 VAC
R
E
Slave
Switch in
SLAVE Position
Interconnecting multiple AM8s
PWR
EXPANSION
IN
M
S
A
(CH40)
S
L
T
A
RS232
OUT
IN
E
V
20 VAC
R
E
Master
Switch in
MASTER Position
PWR
EXPANSION
IN
M
A
S
(CH40)
S
L
T
A
RS232
OUT
IN
E
V
20 VAC
R
E
Slave
Switch in
SLAVE Position
PWR
EXPANSION
IN
M
A
S
(CH40)
L
S
A
T
OUT
IN
RS232
E
V
20 VAC
R
E
Slave
Switch in
SLAVE Position
LECTROSONICS, INC.
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