Polycom Vortex EF2280 User guide

Vortex EF2280
Applications and Presets Guide

Copyright © 2001 Polycom, Inc. All rights reserved. Printed in the United States of America. Because of technical
progress, specifications are subject to change without notice.
The Polycom logo and Vortex®are registered trademarks of Polycom, Inc..
Polycom, Inc.
Installed Voice Business Group
1720 Peachtree Street NW, Suite 220
Atlanta, GA 30309-2439
Phone: [phone]
Fax: [phone]
www.aspi.com
Technical Support:
[phone]
[email protected]
VORTEXAPPGUIDE-0100-01

VORTEX®APPLICATIONS AND PRESETS GUIDE
Polycom, Inc., Copyright 2001 Technical Support: [phone] 1
Introduction....................................................................................................2
Building Your System with Multiple Vortexes® ..........................................3
1. Assign Inputs....................................................................................................... 3
2. Assign Outputs.................................................................................................... 3
3. Configure the submatrix ..................................................................................... 3
4. Configure Your Echo Canceller Reference ........................................................ 4
Automixer Settings for Multiple Vortexes............................................................... 5
Connecting Multiple Vortexes ................................................................................ 7
Presets ............................................................................................................10

INTRODUCTION
Vortex®Applications and Presets Guide 2 Technical Support: [phone]
INTRODUCTION
This manual describes useful application information and the factory presets of the
Vo r t e x ®. The following is an overview of each section:
• Building Your System with Multiple Vortexes® outlines things you need to con-
sider as you build a system with mulitple Vortex units.
•Presetsshows Factory Presets 0-6 in block diagram form and matrix settings.
These are meant to be used as examples. Vortex Factory Presets include the fol-
lowing:
• Factory Preset 0: DEFAULT. Inputs 1-8 direct out; Inputs A-D mix minus to
Outputs A-D for room audio, codec, Phone Add, and/or program audio.
• Factory Preset 1: DEFAULT, STEREO. Default configuration with stereo.
• Factory Preset 2: SPLIT. Vortex split between 2 rooms. Inputs 1-4, Output 1
go to Room 1; Inputs 5-8, Output 5 to Room 2. Input/Output A-B and Input/
Output C-D for codec and Phone Add in each room.
• Factory Preset 3: RESERVED.
• Factory Preset 4: 8 MICS/ZONE. For applications with 8 microphones per
loudspeaker zone.
• Factory Preset 5: 8/ZONE, STEREO. 8 mics/zone with stereo.
• Factory Preset 6: 4 MICS/ZONE. For applications with 4 microphones per
loudspeaker zone.
• Factory Preset 7-12: RESERVED for future use.
• Factory Preset 13: PASSTHROUGH MIC. Passthrough mode (Inputs 1-8, A-D
are direct out) with Inputs 1-8 set to Mic level. Everything else is disabled.
• Factory Preset 14: PASSTHROUGH LINE. Passthrough mode (Inputs 1-8, A-D
are direct out) with Inputs 1-8 set to Line level. Everything else is disabled.
• Factory Preset 15 BLANK SLATE. All crosspoints muted. Everything dis-
abled.

BUILDING YOUR SYSTEM WITH MULTIPLE VOR-
© Polycom, Inc. 3 Vortex®Applications and Presets Guide
BUILDING YOUR SYSTEM WITH MULTIPLE VORTEXES®
The following is a checklist for building a system with multiple Vortexes:
1. Assign Inputs.
2. Assign Outputs.
3. Configure submatrix (the EF Bus).
4. Configure your echo canceller reference.
1. ASSIGN INPUTS
Assign each audio source to an input. Remember to include the conferencing equip-
ment such as the EF200 Phone Add or a video codec and any program audio.
2. ASSIGN OUTPUTS
Try to assign as many outputs as you can to each Vortex to make a simpler submatrix.
Remember that Outputs 1-8 can also be used as outputs of the matrix. The bussing
can get very complicated very quickly if you choose to spread your outputs over sev-
eral units.
3. CONFIGURE THE SUBMATRIX
To link multiple Vortex devices together, use the submatrix on the EF Bus.
The EF Bus The EF Bus is a high speed, low delay digital bus that includes the W, X, Y, and Z
audio busses as well as the echo canceller reference and remote control information
(for other Vortexes) and can link up to 8 Vortex devices. All busses include NOM
information and can be used for sharing microphone inputs, or for sharing mono or
stereo program information.
Crosspoint Mix Minus Bus. Each Vortex device in the system can create four
output mixes (W, X, Y, and Z) and place them on the bus. Each device also can create
three input mixes each from the W, X, Y, and Z busses of the other devices (for a total
of 12 mixes). The mixes can have crosspoint gains on the signals from the other
devices. See Figure 1 below. All 12 mixes become inputs to the main matrix and can

BUILDING YOUR SYSTEM WITH MULTIPLE VOR-
Vortex®Applications and Presets Guide 4 Technical Support: [phone]
be mixed with the other inputs to create Outputs 1-8, A-D, Ref 1, Ref 2, and W, X, Y,
and Z bus outputs.
EF Bus Reference. In a system with multiple devices, if all devices need the
same echo canceller reference, one device should be designated to put its echo cancel-
ler reference (either Ref 1 or Ref 2) on the EF bus to be used as the EF Bus Reference.
All other Vortexes may use the EF bus reference as the reference for their echo can-
cellers, or they can use their own internal references. The references may include a
mix of any input, with crosspoint gains, including W, X, Y, and Z busses.
NOM Bus. All busses on the EF Bus contain NOM information. See “NOM
Active” on page 29 of the Vortex Reference Manual for more information on how
NOM attenuation 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 (if not using Preset 0)” on page 13. of the Vor-
tex Reference Manual. Remember that each microphone needs an echo canceller ref-
erence. If all microphones are in the same room and use the same reference,
configure the echo canceller reference on one Vortex and assign it to the EF Bus as
the EF Bus Reference. Only one Vortex out of multiple units linked together can put
Figure 1. W, X, Y, and Z submatrices.
Submatrix
Bus W WB0W
B1W B2W B3W B4W B5W B6W B7
Bus X XB0X
B1X B2X B3X B4X B5X B6X B7
Bus Y YB0Y
B1Y B2Y B3Y B4Y B5Y B6Y B7
Bus Z ZB0Z
B1Z B2Z B3Z B4Z B5Z B6Z B7
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.
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 Pinouts” on
page 43 for pinout of Cat 5 cable.

BUILDING YOUR SYSTEM WITH MULTIPLE VOR-
© Polycom, Inc. 5 Vortex®Applications and Presets Guide
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.
AUTOMIXER SETTINGS FOR MULTIPLE VORTEXES
When using more than one Vortex in your room system, you have several possibilities
for how you configure the automixer. Each Vortex can operate as one of the follow-
ing:
• One automixer, independent of other Vortexes linked to it
• Two automixers, independent of other Vortexes linked to it
• One large automixer, sharing automixer functions with other Vortexes linked to it
• Two large automixers, sharing automixer functions with other Vortexes linked to
it
Automixer and Bus
Mixer Settings To operate the Vortex in any of the above possibilites, two global parameters need to
be changed: the AUTOMIXER and the BUS MIXER (see Figure 2). The AUTOMIXER
parameter chooses which automixer the input channel will be on (this is changed
either on the AUTOMIXER page in Conference Composer or on the MATRIX MIXER
page).
The BUS MIXER parameter is used to assign one of the two internal automixers to one
of the eight EF Bus automixer groups. For example, consider three Vortexes each of
which has four microphones assigned to Automixer 1 and 4 microphones assigned to
Automixer 2. Now, if each of these Vortexes sets their Automixer 1 to have Bus
Mixer 5 (the Bus Mixer is also referred to as the Bus ID), then the three automixers
(one from each Vortex) will work as a single automixer containing 12 (3 x 4) micro-
phones. Setting BUS MIXER to 0 means that the automixer is not grouped on the EF
Bus.
Operating as an
Independent
Automixer
To set the Vortex to operate as an independent automixer (or two independent mix-
ers), set the BUS MIXER parameter to 0, or to a number that is different from any other
automixer group currently in use on the EF Bus.
Figure 2. Vortex Automixer Global Parameters in Conference Composer Software

BUILDING YOUR SYSTEM WITH MULTIPLE VOR-
Vortex®Applications and Presets Guide 6 Technical Support: [phone]
Operating as One
Automixer with
Multiple Vortexes
To set the Vortex to operate as one automixer across several Vortexes, set the BUS
MIXER parameter on all Vortexes to the same automixer group.
Example: Room
Combining Let’s take a room combining setup as an example. You have 3 rooms, each with 8
microphones, therefore needing 3 Vortexes. For the purposes of this example, the 3
rooms can operate as 3 separate rooms, 2 rooms with 12 mics each, or one large room.
When the system is split into 3 Rooms, the BUS MIXER option should have the fol-
lowing settings:
When split into 2 Rooms:
And finally, all combined into one room:
The various room setups can be saved in the user defined presets or can be changed
with macros.
ROOM V
ORTEX ID AUTOMIXER BUS MIXER MICS
100 AM1 0 1-8
201 AM1 0 1-8
302 AM1 0 1-8
Table 1: BUS MIXER settings for 3 separate rooms each with 8 microphones operating
independently
ROOM V
ORTEX ID AUTOMIXER BUS MIXER MICS
100 AM1 1 1-8
201 AM1 1 1-4
201 AM2 2 5-8
302 AM2 2 1-8
Table 2: BUS MIXER settings for 2 rooms with 12 microphones each
ROOM V
ORTEX ID AUTOMIXER BUS MIXER MICS
100 AM1 3 1-8
201 AM1 3 1-8
302 AM1 3 1-8
Table 3: BUS MIXER settings for one room with 24 microphones

BUILDING YOUR SYSTEM WITH MULTIPLE VOR-
© Polycom, Inc. 7 Vortex®Applications and Presets Guide
CONNECTING MULTIPLE VORTEXES
Up to 8 Vortexes 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 Vortexes together.
The following steps should be followed to connect the EF Bus:
• Connect the RS-232 remote control device to the first Vortex in the chain.
• Connect the provided Cat-5 cable between the EF BUS OUT of the first device,
and the EF BUS INof the second device.
• Connect another Cat-5 cable between the EF BUS OUT of the second device and
the EF BUS INof the third device, and so on.
• Terminate the chain of Vortexes using the instructions below.
Terminating the
Vortex The Vortex must be terminated with the provided EF Bus terminator. Place a termina-
tor in the EF BUS INof the first device in the chain and also in the EF BUS OUT of the
last device. If you lose the terminator provided with your Vortex unit, see “Making an
EF Bus Terminator” on page 45 for information and instructions on how to make one.
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.

BUILDING YOUR SYSTEM WITH MULTIPLE VOR-
Vortex®Applications and Presets Guide 8 Technical Support: [phone]
The Vortex does not have to be terminated if you are using a single unit not connected
together with another Vortex.
Figure 3. Connecting and terminating multiple Vortexes.
...
EF Bus Terminator
EF Bus Terminator
Cat-5 cable
Cat-5 cable
Cat-5 cable