T E CH N I C A L S U P P O RT:
1.800.283.5936 (USA) OR 1.801.975.3760
8
OV E R V I E W •
PRODUCT DESCRIPTION
Front Panel
The AP400 front-panel LCD window and the push-button controls
(Figure 2) enable you to view or modify current AP400 status and set-
tings.
The numbered items in Figure 2 correspond to the following descrip-
tions. (For more detail on using the front-panel control, refer to the
Installation section.)
1.
LCD window: The two-line, 16-character-per-line LCD display is used
for AP400 setup and level adjustments in conjunction with the four
associated front-panel buttons [2, 3 and 4]. Functions that can be
accessed through the front-panel LCD include setup, programming,
troubleshooting, and numeric audio level and gain readouts.
2.
Enter. This button is used to move deeper within a menu, or to edit or
store a selected parameter.
3.
▲
/
▼
. These buttons scroll up and down through menu options with-
in a specific parameter; these buttons also increase or decrease a
numeric value.
4.
Esc. This button steps out of a selected parameter without changing
its value, or moves the display to the next higher menu level.
5.
LED Meter. This LED bar meter displays the audio level of any input
or output of the AP400 as well as displaying Echo Return Loss (ERL)
and Echo Return Loss Enhancement (ERLE) for microphone channels
1–4. The LED meter also displays Telco Echo Return Loss (TERL) and
Telco Echo Return Loss Enhancement (TERLE) for the telephone
hybrid.
6.
Meter. This button displays the Meter branch of the AP400’s LCD
menu tree from which you can view or enter settings.
7.
System. This button displays the System branch of the AP400’s LCD
menu tree.
1
2 3 4
5
6
9
10
7
11
8
12 13
Meter
System
Inputs
Outputs
Routing
+12
+8
+4
0
-4
-10
-30
Esc
Mic On
Enter
LCD DISPLAY
1
2
3
4
On
Off
Telephone
Figure 2. AP400 front-panel controls
