Manual

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OPERATION:
The DG-25 Audio Alarm Base Station is normally paired with the DG-MA Monitor/Talkback
Amplifier for utilizing the monitor and talk back capabilities of the unit. The operation
below includes the DG-MA unit.
The Keyswitch[16] has three functions. At position 1, it turns “OFF” the power to
the DG-25III. At position 2, it turns “ON” power as indicated by the Power Indicator
LED[3]. At position 3, it turns “ON” the Sonalert Buzzer[4] while the power is still
“ON”. At Position 4, it again turns “OFF” the unit. Returning back to Position 3, turns
the power as well as the Sonalert Buzzer[4] “ON”. The key can be pulled out at any
of these positions for security purposes.
When a microphone picks up sound within its vicinity, the bi-color zone Alarm
Indicator LED[2] will start to glow “green”, the brightness of which depends on the
intensity and type of audio the microphone is picking up. As long as there is noise
present near the microphone, the green light will continue to blink. This would signal
the operator that somebody is out there in that particular zone. When the audio
exceeds the threshold level setting, the unit will go into alarm. At this time, the
Alarm Indicator LED[2] for that zone will change color from “green” to “red”
indicating an alarm condition and produce a 3-second audio alert from the Sonalert
Buzzer[4]. When the alarm has occurred, the audio from that zone can be
monitored on the DG-MA Speaker[36] or headphone by moving the alarmed Zone
Selector Switch[1] to “monitor” (UP position). Monitor level is adjusted with the
Monitor Level Control Knob[34] on the DG-MA panel. The alarm is canceled by
pressing the Reset Switch[12].
Selecting the “monitor” position for one or more zones allows the audio to be
monitored without an alarm occurring whenever the Non-Alarm Monitor Switch[14]
is in the “ON” position. The level is controlled by the Monitor Level Control[34] on
the DG-MA.
When a Zone-Selector Switch[1] is in the “Monitor” position (UP) and an alarm
occurs, audio is immediately present on the built-in Monitor Speaker[36] or optional
Headphones[35].
Alarm threshold settings can be adjusted by pushing the Night Sensitivity Setting
Pushbutton[20] or Day Sensitivity Setting Pushbutton[21]. When the Day/Night
Sensitivity Switch[9] is in the UP position, all the Night Threshold Sensitivity
switches[20] are activated. The switches can now be adjusted to their proper
settings. When the Day/Night Sensitivity Switch [9] is in the DOWN position, all
the Day Threshold Sensitivity Switches[21] are activated. The sensitivity setting
pushbutton switches are factory preset to a certain threshold. This can be used as a
reference setting.
The Alarm Delay Setting Pushbutton[19] is factory set to 0.1 second (minimum or
no delay). It can be adjusted to the desired time (up to 3.2 seconds) by placing the
Time Delay Switch[5] UP and pushing the Alarm Delay Setting Pushbutton[19]
one step at a time to increment the increase. The DG-25III can be triggered using
the Tester Trigger Pushbutton[10] to determine the alarm delay as seen on the
Alarm Delay Indicator[18].
III
LOUROE ELECTRONICS 6955 VALJEAN AVENUE, VAN NUYS, CA 91406 TEL [phone] FAX [phone]
Website: www.louroe.com Email: [e-mail]
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INSTALLATION AND OPERATING INSTRUCTIONS
DG-25III 2/08