Simplex 4100-9600 Installation Instructions Manual page 17

Wiring,
Continued
Amplifier and
The low level (1Vp‐p) audio output from the legacy controller to the local amplifiers must be
Harness
converted from an unbalanced signal to a balanced signal in order to pass the distortion
Connections
requirements for this configuration. This is accomplished by a new Isolation Transformer harness,
PN 0734‐231. If there is more than one amplifier on a channel, additional isolator harnesses must
be added between each link in the audio distribution. If the Legacy Controller uses two channel
audio, isolation harness's will be required for the second channel. See Fig. 10:
1 10
S A A S A A
RISER 1 RISER 2
TB1
4100-1210
ANALOG
AUDIO
CONTROLLER
(566-218)
Node 1
Host Panel
DASHED
LINES ARE
FOR CLASS A
OPERATION
Node 1
Miniplex
Transponder
4100-0620
BASIC TIC
(566-093)
OR 4100-0625
LOCAL
MODE TIC
(566-094)
HARNESS
733-997
P3
P2
4100-0621
ANALOG
AUDIO
RISER
RISER 2 RISER 1
SEC PRI SEC PRI
TB1
S S
1 10
MODE 1
4100U/4100ES MINIPLEX
TRANSPONDER
Figure 10. Amplifier and Harness Connections
17
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PHONE TO
OUTPUT 1 AUDIO OUTPUT 2 AUDIO OUTPUT 3
ADDITIONAL
734-231 HARNESS
IF 2 CHANNELS
NEW AUDIO
ISOLATOR
HARNESS
PN 734-231
MODE 2
LEGACY MINIPLEX
TRANSPONDER
NEW AUDIO
ISOLATOR
HARNESS
PN 734-231
LEGACY LEGACY
AMPLIFIER AMPLIFIER
TP6
AUDIO BD
ASSY NO.
562-894
C118
R90
R85
R88
IN OUT
S S
AUDIO
LEGACY
AUDIO
CONTROLLER
ISOLATOR
EXISTING PRODUCT
742-302
AUDIO ISOLATOR
ASSEMBLY
TO ADDITIONNAL
AMPLIFIERS
(IF REQUIRED)
NEW AUDIO
ISOLATOR
HARNESS
PN 734-231