Meyer Sound CAL 32, Operating Instructions Manual

Page: 19 / 44

CAL OPERATING INSTRUCTIONS
19
Override and Mute
For installations where CAL is part of a fire alarm or
evacuation system, the loudspeaker’s active audio input
(main program source) can be muted or replaced with an
override input (alarm or emergency announcement source).
The mute or override can be triggered with a relay closure
attached to the Mute or Override pins.
The Mute pin is triggered when it receives a voltage of 3 to
20 V DC greater than its associated COM pin. When
triggered, the Mute pin instructs CAL to mute its audio
output.
The Override pin is triggered when it receives a voltage of 3
to 20 V DC greater than its associated COM pin. When
triggered, the Override pin instructs CAL to override the
active audio input with the override input. Both the active
input and override input are specified in Compass control
software.
+5 V DC Power Source
CAL offers a local +5 V DC power source as a convenient
means for controlling its Logic I/O features. The +5 V DC
pins provide an is5 V DC output that can be
connected to any of the Logic I/O pins through an external
relay or switch, eliminating the need for an external control
voltage. The +5 V DC pin is fused at 0.35 A.
ETHERNET AND AVB PORTS
CAL’s Ethernet and AVB ports use RJ-45 Ethernet
connectors and allow the loudspeaker to be connected to a
standard computer Ethernet port, network router, or switch
with a CAT-5e (or better) cable. Each port uses the IPv6
protocol for network communication and has an
independent Media Access Control (MAC) address that is
static and preassigned.
NOTE: The Ethernet and AVB ports do not
provide loop output and do not allow looping
of multiple CAL loudspeakers from a single audio
source.
When CAL is connected to a Mac or Windows-based
computer, Compass Control Software lets you configure
beam spread and beam angle, and upload these settings as
a preset to CAL. Compass Control Software also includes
an RMS tab for remote monitoring of all CAL loudspeakers
on the network.
The Ethernet and AVB ports accept AVB-enabled Ethernet
connections for integrated AVB audio and Compass control.
AVB audio stream inputs can be used as audio sources. In
Compass control software, AVB audio streams for the port
can be specified as the active input or override input.
NOTE: For more information, see the AVB
Networking Guide, available at
https://meyersound.com/documents .
Ethernet and AVB Port LEDs
The yellow and green LEDs on each port indicate
connection status and data traffic, as on standard Ethernet
ports.
Override and Mute Pins
+5 V DC Pins
Com
Mute
Override
+5 Vdc
Com
Com
Mute
Override
+5 Vdc
Com
Ethernet and AVB Ports