Operation Manual
LCD MENU STRUCTURE
VORTEX EF2280 Reference Manual 30 Technical Support: 800.932.2774
I
NPUTS
The input menu allows the user to adjust functions related to the input signals to the
EF2280. This menu contains A
COUSTIC ECHO CANCELLATION, AUTOMATIC GAIN
C
ONTROL, AGC MAXIMUM, AGC MINIMUM, GAIN ADJUST, LEVEL MIC/LINE,
M
UTE, NOISE CANCELLATION, NOISE CANCELLATION LEVEL, PHANTOM POWER,
R
EFERENCE ASSIGN, and AEC SUPPRESSION. The menu is organized around the
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. This allows you to enable or disable the acoustic
echo canceller on a particular channel. The default is On.
Automatic Gain Control. This enables automatic gain control (AGC) on
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 INDICATOR on the front panel automatically reflects the
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.
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). This allows you to select the level of noise
Figure 20. EF2280
Inputs submenu
Inputs 1-8, A-D
Mute
Acoustic Echo
Cancellation (In 1-8)
Gain
AGC Maximum
(In 1-8)
Level Min/Line
(In 1-8)
Automatic Gain Control
(AGC), In 1-8
Noise Cancellation Level
(In 1-8)
Phantom Power
(In 1-8)
Noise Cancellation
(In 1-8)
AEC Suppression
(In 1-8)
Reference Assign
(In 1-8)
AGC Minimum
(In 1-8)
Figure 21. Gain adjust and matrix crosspoints of Inputs 1-8 and A-D.
Mic Preamp
Adjustable 33 to 53 dB
Output
Matrixer
Matrix Cross Point
Adjustable 20 to -100dB
Input Channel (1 of 8) Matrix Cross point Output Channel (1 of 12)
Input Level
Adjustable 0 to 20dB
Output
Matrixer
Matrix Cross Point
Adjustable +20 to -100dB
Input Channel (A, B, C, or D) Matrix Cross point Output Channel (1 of 12)
Gain Adjust
+20 to -100dB
Gain Adjust
+20 to -100