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document without notice. The information herein is believed to
be accurate. No responsibility is assumed by AMG for its use.
Page 10 of 12
AMG5904A966B9 Instruction Sheet
D22153-00.doc
The alarm output circuit is designed for low dc voltage / low current operation and has minimal internal
protection. If an alarm output is used to drive an external relay circuit, the external crcuit MUST include
a protection (flyback) diode connected across the relay to prevent the high voltage generated from a
back EMF causing damage due to the AMG output transistor.
Alarm Interface Connections
Alarm Interfaces
Connector Pin
No.
Alarm IN
1-4, 5-8
Alarm OUT
1-4 , 5-8
1
ALARM 1/5 IN
ALARM 1/5 OUT
2
ALARM 2/6 IN
ALARM 2/6 OUT
3
GND
GND
4
ALARM 3/7 IN
ALARM 3/7 OUT
5
ALARM 4/8 IN
ALARM 4/8 OUT
Audio Channel Configuration
The
AMG5904A966B9
provides fourteen bi-directional audio channels.
Each audio channel input is a balanced pair and the impedance can be configured as 56kΩ or 600Ω.
The input impedance of each audio channel is individually selected using the DIL switch on the front
panel.
If an audio input is single ended or ground referenced input rather than a differential (balanced) input
pair, the Audio IN- signal should be connected to one of the GND pins available on the 37way D-type
connector. These GND inputs are common to all audio channels.
Echelon FTT-10A Data Channel Configuration
The
AMG5904A966B9
provides 2 Echelon FTT-10A Data channels.
The GND connection associated with any Data signal signal should be connected to one of the GND
pins available on the 37way D-type connector. These GND inputs are common to all audio / data
channels.
