Inputs - Polycom Vortex EF2280 Reference Manual

I
NPUTS
Inputs 1-8, A-D
Acoustic Echo
Cancellation (In 1-8)
Automatic Gain Control
(AGC), In 1-8
AGC Maximum
(In 1-8)
AGC Minimum
(In 1-8)
Gain
Level Min/Line
(In 1-8)
Mute
Noise Cancellation
(In 1-8)
Noise Cancellation Level
(In 1-8)
Phantom Power
(In 1-8)
Reference Assign
(In 1-8)
AEC Suppression
(In 1-8)
Figure 20. EF2280
Inputs submenu
V EF2280 Reference Manual
ORTEX
The input menu allows the user to adjust functions related to the input signals to the
EF2280. This menu contains A
C , AGC M
ONTROL AXIMUM
M , N C
UTE OISE ANCELLATION
R A , and AEC S
EFERENCE SSIGN
Inputs (1-8) and (A-D), so that you first select an input and then select settings for that
input. You can also choose to apply the settings to all Inputs, Inputs 1-8, or Inputs A-
D.
Acoustic Echo Cancellation.
echo canceller on a particular channel. The default is On.
Automatic Gain Control.
Inputs 1-8. The default is On.
AGC Max.
Sets the maximum gain value that the AGC can apply.
AGC Min.
Sets the minimum gain value that the AGC can apply.
Gain.
This parameter adjusts the gain level of the 12 inputs. This is normally con-
figured during the calibration process. The default setting is 15 dB for microphone
signals and 0 dBu for line level signals. See "Level" above for setting mic/line level
for Inputs 1-8. The L
EVEL
level of the channel whose gain is being adjusted.
Figure 21 below shows the gain adjust on Inputs 1-8 and A-D and the matrix cross-
points.
Input Channel (1 of 8)
Mic Preamp
Adjustable 33 to 53 dB
Adjustable 20 to -100dB
Input Channel (A, B, C, or D)
Input Level
Adjustable 0 to 20dB
Adjustable +20 to -100dB
Figure 21. Gain adjust and matrix crosspoints of Inputs 1-8 and A-D.
Level.
Use this parameter to select mic or line level on Inputs 1-8.
Mute.
This selects which input channel (1-8, A-D) or the W, X, Y, or Z input is
muted. The default is not muted.
Noise Cancellation (Inputs 1-8).
30
E C
COUSTIC CHO ANCELLATION
, AGC M , G A
INIMUM AIN
, N C
OISE ANCELLATION
. The menu is organized around the
UPPRESSION
This allows you to enable or disable the acoustic
This enables automatic gain control (AGC) on
I on the front panel automatically reflects the
NDICATOR
Matrix Cross point
Matrix Cross Point Gain Adjust
+20 to -100dB
Matrixer
Matrix Cross point
Matrix Cross Point Gain Adjust
+20 to -100
Matrixer
This allows you to select the level of noise
Technical Support: 800.932.2774
LCD M S
ENU TRUCTURE
, A G
UTOMATIC AIN
, L M /L ,
DJUST EVEL IC INE
L , P P
EVEL HANTOM OWER
Output Channel (1 of 12)
Output
Output Channel (1 of 12)
Output
,