8
CM900
1
AUX Power Out (12Vdc, 1.0A)
Used to power other components . Most
often used in ezRoom applications to
power the TB-14 .
2
Channel 1 Audio Line In (switchable)
Connect other classroom media sources
(computer, wireless mic receiver, DVD) to
play audio through connected speakers .
3
Channel 1 Switch (Stereo/Balanced)
Use these switches to change the input for
Channel 1 . Set both switches to stereo for
stereo input or both switches to Balanced
& Mono for mono input . Do NOT have one
switch on stereo and one on balanced .
4
Channel 2 Audio Line In (stereo)
Connect other stereo classroom media
sources .
5
Channel 3 Audio Line In (stereo)
Connect other stereo classroom media
sources .
6
Channel 1 Switch (Stereo/Mono)
Use these switches to change the input for
Channel 1 . Set both switches to stereo for
stereo input or both switches to Balanced
& Mono for mono input . Do NOT have one
switch on stereo and one on mono .
7
PA Out
Terminal to connect speakers. 2 x 8w (8Ω),
2 x 16w (4Ω).
8
Line Out
Audio output for lesson capture or to send
audio to another device .
9
Main Power In (12Vdc, 5.0A)
10
PoE Power In (12Vdc, 2.0A)
Power jack to connect separate PoE
extractor module . Provides power in event
of a mains interruption .
11
LAN (RJ45)
Provides network connection to device .
10/100Mb/s (auto sensing) using either
TCP/IP or UDP protocols .
12
RS232
Can be used to control two RS232 devices .
The second serial port can also be config-
ured as an input to allow the CM900 to be
controlled via RS232 .
13
PGO Detect
Page override interface with 20/70/100V
analog paging systems . Automatically mutes
audio coming from CM900 system during a
paging event .
14
Alarm Detect
Connect to an alarm system to trigger events
or mute audio when the alarm is triggered
15
Intercom (RJ45)
Connect the CB75 intercom panel micro-
phone for communication with front office
when push-to-talk is required (can also be
used with CB85) . Connect a CB50 volume
control with a TB8 cable for basic volume
and mute control . Connect the CMBT
Bluetooth audio receiver for wireless audio
streaming and pass-through support for
CB85 mic and CB55 volume control .
16
IR Blaster
Routes IR control signals to devices
connected via an IR emitter cable .
17
Relay (2.0A)
Allows triggering of third party devices,
like strobes or door locks . Can be wired for
“Always Open” or “Always Closed” .
18
PA Fault LED*
Indicates the mute/unmute status of the
local audio (“CH1 Line In” and “CH2 Line
In” ports) . Normal operation: solid amber
(muted), unlit (unmuted) .
19
Error LED*
Indicates firmware error . Normal operation:
unlit .
20
Status LED*
Indicates the overall operational status of
the CM900 . Normal operation: green LED
blinks ½ second on + ½ second off .
21
LAN In
Used with #22 CLAN Out; connect to a net-
work switch .
22
CLAN Out
Used with #21 LAN In to add power to the
network connection; connect to a CB6000
or CB2000 wall control .
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