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INSTALLATION
© Polycom, Inc. 9 VORTEX EF2280 Reference Manual
The following steps are typically used to setup the EF2280:
Connect a microphone to each of the 8 mic/line level inputs. The mic/line input
accepts mini-Phoenix connectors. See “Connector Pinouts” on page 48 for
pinouts of Phoenix connectors.
Connect one line output to an amplifier or powered loudspeaker.
Connect the reference input (Input A, B, C, or D) to T
O AEC on the EF200 (if
you have multiple EF200’s, connect only one reference) or to the output of the
codec.
Connect one line output to F
ROM AEC on the EF200 or to the input of your
codec.
If RS-232 remote control is desired, connect the RS-232 R
EMOTE CONTROL port
of the EF2280 to the remote control device, such as an RS-232 interface to a
touch panel or a COM port on a personal computer. If you are using an EF200
Phone Add, connect the ASPI B
US on the EF2280 to the ASPI BUS IN on the
EF200.
Connect the external power supply to the P
OWER SUPPLY INPUT jack of the
EF2280.
D
EVICE
ID
S
ON
THE
EF B
US
When considering which Device IDs can be used for which Vortex device, decide
how many devices have the ability to transmit on the W, X, Y, and Z busses, and how
many have the ability to transmit on the P Bus. The EF2280, for example can only
transmit on the W, X, Y, and Z busses while the EF2241 can transmit on the W, X, Y,
and Z busses as well as the P bus. Up to 8 devices can transmit on the W, X, Y, and Z
busses. Similarly, up to 8 devices can transmit on the P bus. Note that the EF2241
counts as one of both types.
C
ONNECTING
M
ULTIPLE
EF2280
S
Up to 8 EF2280s can be linked together at one time. Each unit in the chain must have
a unique Device ID. Use the EF Bus to link multiple EF2280s together.
The following steps should be followed to connect the EF Bus:
1. Set a unique Device ID for each EF2280
2. Power off all units
3. Connect the RS-232 remote control device to any EF2280 in the chain.
4. Connect the provided Cat-5 cable between the EF B
US OUT of the first device,
and the EF B
US IN of the second device.
Note. If you are linking multiple EF2280s, you must use the EF bus
to link the units. If you are linking a EF2280 to other EF
devices, such as the EF200 Phone Add, for RS-232 control,
use the ASPI bus. See Figure 8 on page 11.
Note. The EF Bus must be connected so that the EF Bus In of one
box is connected to the EF Bus Out of another. Connecting
the EF Bus In to another EF Bus In (or Out to Out) will not
work.
11


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