A:
9300 S.W. Gemini Drive Beaverton, OR 97008 USA
T:
+1 503.641.7287
W:
www.biamp.com
8
CONNECTIONS AND CONTROLS
Power input port
Connect the Sierra II to the supplied AC power adaptor using
the supplied 2 pole screw block terminal. White/black wire
connects to 12V, black wire connects to GND.
The Sierra II adaptor incorporates a universal mains input which
accepts AC line input from 100 V to 240 V.
Note: If using the PoE functionality to power the Sierra II, do not
connect the AC power adaptor
I/O ports
The three I/O (Inputs/Outputs) can be configured as either output
or input. Each is available for connection to a PIR (movement) sen-
sor, keyboard lock, relays or for other compatible uses. The ports
are not potential free; you may need external relays to prevent
ground loops depending on your application.
When used as outputs, the I/O ports are active low.
When activated, the I/O ports are tied to GND through a FET tran-
sistor (also called open drain/collector function).
Each I/O can draw up to 24VDC/500mA.
When used as inputs, the applied voltage must be below 1 VDC
to be accepted as LOW, and above 4 VDC (but below 24 VDC)
to be accepted as HIGH. The inputs are default HIGH and must
be connected to ground in order to change state.
RS-232/IR ports
The RS-232 ports (TX-1, RX-1, TX-2, TX-3) are used for one- or two-
way communication. Port 1 is a two way port, which can be used for
devices for which a reply function is required, such as a projector.
All of the RS-232/IR ports can be configured in the Biamp Project
Designer software either as RS-232 or as IR emitter.
LAN
GND
+12V
RX-1
TX-1
GND
TX-2
TX-3
I/O 3
I/O 2
I/O 1
GND
GND
NCL
NDA
RoHS
PIN 2 <-> Tx
PIN 3 <-> Rx
PIN 5 <-> GND
LAN
GND
12V
X-1
X-1
GND
X-2
I/O 3
I/O 2
I/O 1
GND
GND
NCL
LAN
GND
+12V
RX-1
TX-1
GND
TX-2
I/O 3
I/O 2
I/O 1
GND
GND
NCL
