Polycom Vortex EF2280, Reference Manual

Page: 41 / 76

I
NTEGRATING THE
EF2280 I
NTO
Y
OUR
S
YSTEM
© Polycom, Inc. 39 V
ORTEX
EF2280 Reference Manual
NOM Bus.
The W, X, Y, and Z busses on the EF Bus contain NOM informa-
tion. See “NOM Active” on page 23 for more information on how NOM attenu-
ation is applied.
4. Configure Your
Echo Canceller
Reference
Review what inputs need to be included in your echo canceller reference —
See “Build Your Echo Canceller Reference” on page 31. Remember that each
microphone needs to have an echo canceller reference. If all microphones are
in the same room and use the same reference, configure the echo canceller
reference on one Vortex device and assign it to the EF Bus as the EF Bus Ref-
erence. Only one Vortex device out of multiple units linked together can put
an echo canceller reference on the EF Bus. For each additional unit, assign
the echo canceller reference to use the EF Bus Reference.
For systems with more than one room, you will need to use the W, X, Y, or Z
sub-busses to share the echo canceller reference in your additional rooms if
the EF Bus Reference has already been assigned to the EF Bus.
P
RESETS
After configuring your Vortex device, save your settings to a User Preset (P
RE
-
SETS
16-47). Also, set the P
OWER
O
N
P
RESET
to the User Preset you have saved
to. The P
OWER
O
N
P
RESET
determines how the unit is configured upon power
up.
If you have multiple Vortex devices in your system, save to a User Preset on
each unit and set the P
OWER
O
N
P
RESET
accordingly.
O
THER
EF2280 F
EATURES
For information on Macros, Logic Inputs, Logic Outputs, Input Filters and Out-
put Filters, please refer to the Conference Composer User Guide.
Note.
The EF Bus must be connected so that the EF B
US
O
UT
of
one Vortex device is connected to the EF B
US
I
N
of another
Vortex device. Connecting EF B
US
I
N
to another EF B
US
I
N
(or
EF B
US
O
UT
to EF B
US
O
UT
) will not work. See“Connector Pin-
outs” on page 58 for pinout of Cat 5 cable.