Bosch Security Systems | 2008-12
PRS-1AIP1 IP Audio Interface | Installation and User Instructions | Introduction en | 7
6 Control Inputs 1..4
Default: open contacts (non isolated, 0 is connected to
ground)
• 1-2: CI1
• 3-4: CI2
• 5-6: CI3
• 7-8: CI4
7 Control Inputs 5..8 and Fault Relay out
Default: open contacts (non isolated, shared 0 is
connected to ground, internal pull-up current source)
• 1-2: CI5
• 3-2: CI6
• 4-5: CI7
• 6-5: CI8
Fault Relay out
Default (no fault): open contacts (voltage free relay
contact)
• 7-8: Fault contact
8 Audio Output 2
Balanced, line level with pilot tone generation
•1: -
• 2: ground
•3: +
9 Audio Output 1
Balanced, line level
•1: -
• 2: ground
•3: +
10 Audio Input 2
Balanced, line level with pilot tone detection
•1: -
• 2: ground
•3: +
11 Audio Input 1
Balanced, microphone/line level, microphone
supervision
•1: -
• 2: ground
•3: +
12 RS-232 serial port
D-Sub, 9-pole male
13 Ethernet 1
RJ45 for network connection 10/100 Mbps with status
indicators
• Green ON: network connection established
• Green OFF: no network connection
• Yellow ON/flashing: data communication
• Yellow OFF: no data communication
14 Ethernet 2 (back-up connection for redundancy)
RJ45 for network connection 10/100 Mbps with
indicators as for Ethernet 1
15 RS-485 bus
For future use; RS-485 interface is not supported
• 1: A (TxD-/RxD-)
• 2: C (reference). Connected via a 100 ohm resis-
tor to the ground, which is connected to the nega-
tive input terminal of the power supply.
• 3: B (TxD+/RxD+)
16 Back-up power supply input
with battery under-voltage detection
•1: +
• 2, 3: ground
17 Mains power supply input
with mains power failure detection
• Centre: +
• Ring: ground
Caution
Do not connect a voltage or current source to
the Control Input contacts.
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