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Parts Identifications ( con’t )
T
12. ADDRESS SWITCH
11. FAULT CONTACT AND DATA TEMINALS
10. DIP SWITCHES FOR UNUSED CHANNELS
8. POWER INPUT TERMINAL
9. AMPLIFIER INPUT AND OUTPUT TERMINALS
7. CASCADE LINK
Port to link more than one AX3800 to enable 1 standby to cater for up to 16 nos of amplifiers. Refer to
section “ Cascading AX3800 ” for details.
AX3800 operates on 24V DC. Use PS9400 power supply unit or regulated power adaptor with 1 A rating.
Outputs from amplifiers are terminated to the IN connectors and the OUT connectors going to zone selectors.
Sensing of amplifier faults shall be at input terminals. For the channels not connected, it should be switched off
at the DIP switch as per item 10.
Channel 1 shall have higher priority for standby takeover than subsequent channels. This is to ensure that ampli-
fier serving highest priority shall be connected to channel with lower number.
When there are channels not connected, push to ON at this DIP switch to bypass the detection activity.
A fault detected at any channel would trigger a relay to provide a dry contact. This contact can be used to link to
external alarm, indication light, etc.
Corresponding RS485 data shall be sent out and can be monitored remotely, such as at PMX Lan through
iPX5500 Comm Box. Refer to section “ Remote Monitoring via PMX LAN ”
For remote monitoring, it is required to address each AX3800 when there are more than one installed. Units
are addressed using BCD code, as shown below :
Unit no.1 1000 0000
Unit no.2 0100 0000
Unit no.3 1100 0000
Unit no.4 0010 0000
AX3800 Auto Amplifier Fault Changeover