iPAM400 – Product Manual
U-0629-0171.doc – Issue: 04 complete, approved
Page 127 of 138
11.3.2.3 Access Granted Signal for routing Audio Input Signal 1 into Zone 1
• Driven by an ASL PA system control output.
• Connected to a control input on the source system.
• Isolated at the ASL PA end.
• Configured to indicate: see Figure 27 (page 128) and Figure 28 (page 128):
Active =: 'Source system broadcast in progress', if the source system has requested a broadcast,
and the route is now open for it to broadcast = closed contact pair.
Inactive = 'Source system broadcast not in progress' at all times when the source system cannot
broadcast into the zone, e.g. because of a higher priority broadcast into the same zone =
open contact pair.
11.3.3 Routing Audio Input Signal 1 into Zone 2, Zone 3, etc
Repeat the three line control interface as required for routing audio input signal 1 into additional PA zones
or zone groups.
11.3.4 Audio Signals 2, 3, 4, etc
Repeat the audio input and three line control interfaces as required for routing additional audio input
signals into additional PA zones or zone groups.
Figure 26 LLPA connectivity overview
LLPA SYSTEM
PA SYSTEM
AUDIO
ACCESS GRANTED
BUSY
ACCESS REQUEST / SELECT
THREE LINE LLPA
INTERFACE
CONNECTIVITY
OVERVIEW
AMPLIFIER(S)
(ONE AMPLIFIER FOR
EACH ADDRESSED ZONE
IN THE LLPA ZONE
GROUP)
LLPA SYSTEM
ASL iPAM400
ALL SYSTEM INTERCONNECTION LINES
SHOWN ARE COPPER TWISTED PAIRS
OUTPUTS FROM THE ASL PA SYSTEM ARE
EITHER VOLTAGE FREE CONTACT PAIRS, OR
+V AND OPEN COLLECTOR DRAIN VOLTAGE
OUTPUT PAIRS
CONTROL INPUTS TO THE ASL PA SYSTEM
ARE TO OPTO ISOLATED INPUTS
AUDIO INPUTS TO THE ASL PA SYSTEM ARE
0dB 600R BASE BAND AUDIO
ASL BMB01
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