Operation Manual

PRE-INSTALLATION
© Polycom, Inc. 5 VORTEX EF2280 Reference Manual
EF2280 F RONT AND R EAR P ANELS
1. LCD DISPLAY. Displays menu instructions for configuration and operation of
the EF2280.
2. D
OWN BUTTON. Scrolls backward through menu items at a particular level or
decreases the value of a parameter.
3. U
P BUTTON. Scrolls forward through menu items at a particular level or increases
the value of a parameter.
4. E
NTER. Enters the menu and allows you to select and change parameter values.
5. E
SC. Returns to the next highest level of menus.
6. H
OME. Returns to the top of the menu structure.
7. L
EVEL INDICATOR. Indicates the level of the selected channel or parameter.
8. C
HANNEL ACTIVITY LEDS. Indicates gating activity of the 8 mic/line channel
inputs.
Figure 2. EF2280 Front and Rear Panels
134 5 7
10 1211 15 16 17 18 19
2 86
9 1413