Centralized audio applications
EST3 Installation and Service Manual 4.15
In addition to the terminals listed above, two groups of terminals
are provided for connection of audio signals, one for each channel
WARNING: Do not use the preamp in and out terminals on the
main body of the ATP if the 3-ATPINT Interface is installed.
Route all preamp wiring to the 3-ATPINT.
The following terminals are provided on the ATP for audio
channel 1 and channel 2.
PREAMP IN = Not used. Refer to 3-ATPINT terminal
connections.
PREAMP OUT = Not used. Refer to 3-ATPINT terminal
connections.
PREAMP OUT = Not used. Refer to 3-ATPINT terminal
connections.
AMP IN = From the 70 V or the 25 V output of the power
amplifier.
AMP OUT = to be connected to the Signature Series control
modules and terminated with a URSM Universal Riser
Supervisory Module. The URSM must be monitored by a
Signature Series input module configured as a supervisory circuit.
Each riser cannot supply a load greater than 180 W.
ATP jumper settings
Refer to Figure 4-9.
Table 4-5: 3-ATP Jumper Settings
Function Jumper Setting
Ground fault detection J1 = enable
No ground fault detection J1 = disable
Internal battery charger operable J2 = in
Internal battery charger disabled J3 = in
3-ATPINT terminal connections
Refer to Figure 4-9.
IN RISER = To audio source amplifier 25 or 70 Vrms output, or
previous 3-ATPINT riser output.
OUT RISER = 25 or 70 Vrms output to next 3-ATPINT IN
RISER or EOL resistor.
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