Ef2280 Block Diagram - Polycom Vortex EF2280 Reference Manual

EF2280 B
LOCK
Output 1 Output 2 Output 3
Line Line Line
+ - + - + -
D/A D/A D/A
Delay Delay Delay
PEQ PEQ PEQ
EN EN EN
A/D A/D A/D
Level Level Level
adjust adjust adjust
Phantom Phantom Phantom
Mic/Line + - Mic/Line + - Mic/Line + -
Mic/Line 1 Mic/Line 2 Mic/Line 3
EN (Echo Canceller, Noise Canceller)
Echo
Canceller
EC1, EC2, Bus
Figure 30. Inside the EF2280
© Polycom, Inc.
D
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Output 4 Output 5 Output 6 Output 7
Line Line Line Line
+ - + - + -
D/A D/A D/A
Delay Delay Delay
PEQ PEQ PEQ
Matrixing
EN EN EN
A/D A/D A/D
Level Level Level Level
adjust adjust adjust adjust
Phantom Phantom Phantom Phantom
Mic/Line + - Mic/Line + - Mic/Line + - Mic/Line
Mic/Line 4 Mic/Line 5 Mic/Line 6 Mic/Line 7
Noise
AGC PEQ
Canceller
On Off On Off
Parameters
Output 8 Output A Output B
Line Line Line
+ - + - + - + -
D/A D/A D/A D/A
Delay Delay Delay Delay
PEQ PEQ PEQ PEQ
PEQ PEQ
EN EN
AGC AGC
A/D A/D A/D A/D
Level Level Level
adjust adjust adjust
Phantom
+ - Mic/Line + - Line + - Line + -
Mic/Line 8 Input A Input B
Ungated
Mute Gate Gated
On Off
Parameters
57 V
EF2280 B D
LOCK
Output C Output D
Line Line
+ - + -
D/A D/A
Delay Delay
PEQ PEQ
RS-232
Control/Status
EF Bus
PEQ PEQ
AGC AGC
A/D A/D
Level Level
adjust adjust
Line + - Line + -
Input C Input D
EF2280 Reference Manual
ORTEX
IAGRAM