Operation Manual

EF2280 BLOCK DIAGRAM
© Polycom, Inc. 47 VORTEX EF2280 Reference Manual
EF2280 B LOCK D IAGRAM
Figure 30. Inside the EF2280
Trademark Notice: Vortex
®
is a registered trademark of Polycom, Inc.
Echo
Canceller
Noise
Canceller
EC1, EC2, Bus
EN (Echo Canceller, Noise Canceller)
RS-232 ASPI Bus Control/Status
Matrixing
PEQ GateMute
Gated
Ungated
AGC
EF Bus
Parameters
On OffOn OffOn Off
Parameters
Output 1
Delay
+-
PEQ
Line
Output D
Delay
+-
PEQ
Line
Output C
Delay
+-
PEQ
Line
Output B
Delay
+-
PEQ
Line
Output A
Delay
+-
PEQ
Line
Output 8
Delay
+-
PEQ
Line
Output 7
Delay
+-
PEQ
Line
Output 6
Delay
+-
PEQ
Line
Output 5
Delay
+-
PEQ
Line
Output 4
Delay
+-
PEQ
Line
Output 3
Delay
+-
PEQ
Line
Output 2
Delay
+-
PEQ
Line
Mic/Line 1
Mic/Line
Phantom
A/D
Level
adjust
+-
EN
Input D
Line
A/D
Level
adjust
+-
PEQ
Input C
Line
A/D
Level
adjust
+-
PEQ
Input B
Line
A/D
Level
adjust
+-
PEQ
Input A
Line
A/D
Level
adjust
+-
PEQ
Mic/Line 8
Mic/Line
Phantom
A/D
Level
adjust
+-
EN
Mic/Line 7
Mic/Line
Phantom
A/D
Level
adjust
+-
EN
Mic/Line 6
Mic/Line
Phantom
A/D
Level
adjust
+-
EN
Mic/Line 5
Mic/Line
Phantom
A/D
Level
adjust
+-
EN
Mic/Line 4
Mic/Line
Phantom
A/D
Level
adjust
+-
EN
Mic/Line 3
Mic/Line
Phantom
A/D
Level
adjust
+-
EN
Mic/Line 2
Mic/Line
Phantom
A/D
Level
adjust
+-
EN
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