Optimus M130 Installation And Operating Instructions Manual page 33

M130
8x8 Audio Matrix
13. Switch for setting zones of the fire alarm.
Used to set the zones to be activated, by dry contact closure, when the fire alarm is activated.
The range is from N+ / -1 to N+ / -4.
14. Fire alarm activation terminal.
You can connect up to 8 dry contacts at this terminal to activate the fire alarm. When a contact
terminal is closed, the pre-recorded message will play during eight minutes automatically to the
related zones.
The Led indicators for the related zones, show "F" indicating that the fire message is playing.
15. Volume controls for music sources (AUX 1 ~ AUX 8).
It is used to control the input volume level for the auxiliaries AUX 1~8, the range is from 0 dB to
-10 dB.
Note: If you set a proper input gain, you will avoid distortions and you will obtain an optimum
sound quality.
16. Input connectors AUX1 ~ AUX8.
Input connectors RCA type for auxiliary inputs AUX1-8.
AUX 8 input is used as input timing.
17. Phantom power switch for the emergency microphone.
24VDC supplied to the emergency microphone.
When the switch is pressed, the LED lights up to indicate that phantom power is on.
Warning: Do not activate the switch when using a dynamic microphone.
18. XLR connector for the emergency microphone.
Connect the emergency microphone and adjust the input volume at an appropriate level to
avoid distortion.
19. Volume input control of the emergency microphone.
Adjust the audio level of emergency microphone until a proper level to avoid distortion.
20. Treble control of the emergency microphone.
It is used to adjust the treble level of emergency microphone. The range is from -12 dB to +12
dB, 0 dB being the midpoint.
21. Bass control of the emergency microphone.
It is used to adjust the bass level of emergency microphone. The range is from -12 dB to +12
dB, 0 dB being the midpoint.
M130 Version 1.0 Page 10 of 23