ATB-300 Addendum – Loss of Audio Alarm Status Board
+5V
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K4
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CIT J1031C5VDC.15S
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CIT J1031C5VDC.15S
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CIT J1031C5VDC.15S
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CIT J1031C5VDC.15S
DB25 Female
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CIT J1031C5VDC.15S
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CIT J1031C5VDC.15S
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CIT J1031C5VDC.15S
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CIT J1031C5VDC.15S
DB25 Male (User Supplied)
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AUDIO ALARM RELAY 1
AUDIO ALARM RELAY 2
AUDIO ALARM RELAY 3
AUDIO ALARM RELAY 4
AUDIO ALARM RELAY 5
AUDIO ALARM RELAY 6
AUDIO ALARM RELAY 7
AUDIO ALARM RELAY 8
AUDIO ALARM
Description - ATB-300 Audio Alarm
The ATB-300 provides audio failure alarm status contacts for each of the eight
inputs. Each relay is held closed when audio is present. If audio is removed for at
least five seconds the respective relay will de energize. If audio is restored for at
least five seconds the respective channel relay will re energize. Relay 1-8
provide audio status for inputs 1-8 respectively.
Note that the connector for the alarm relay board is designated as “
GPIO 2
” on
the rear of the ATB-300 chassis.
