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5
Introduction ~ Controls and Connections
Technical Services Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760
C. LED Meter. The LED bar meter is displays the audio level of any selected
input or output on the AP400, as well as displaying echo return loss (ERL)
and echo return loss enhancement (ERLE) for mic channels 1–4.
D. Meter. The Meter button takes you directly to the Meter branch of the
AP400’s LCD programming tree.
E. System, Inputs, Outputs, Routing. These buttons provide direct access to
the corresponding sections in the LCD menu.
F. Mic On LED. These LEDs indicate microphone gate status.
G. On. The On button connects and adapts the AP400 to the telephone line.
Pressing and holding the On button for more than two seconds while the
AP400 is active readapts the unit.
H. Off. The Off button disconnects the AP400 from the telephone line and
mutes all audio to and from the telephone line.
Rear panel
A. Power. This power module accommodates power ranging from
100–240VAC, 50/60Hz, 30W. No switching is required.
B. Inputs A–D. These connectors are used with line-level inputs. Inputs can
include video codecs, AP10 Telephone Interfaces, VCRs, or CD players, or
other audio sources. These inputs can be mixed in any combination with the
gated inputs to any of the eight outputs. Nominal input is 0dBu. Mix level
can be easily set for each non-gated input.
C. Outputs A–D, 1–4. These connectors allows eight line-level outputs to be
connected to the unit. Outputs can include video codecs, AP800s, AP10
Telephone Interfaces, and VCRs. These outputs can be configured to contain
any combination of gated and non-gated inputs. The nominal output level is
0dBm.
AB
C
DE
F
G
H
I
The front panel buttons are
also used to enter the front
panel passcode. See Lock
Panel (page 17) for more details.
The front panel passcode can also
be created in AP-Ware. Refer to the
AP-Ware help file for more
information.
✍
For electrical
specifications, see
Specifications, page 37.
✍
Figure 1.3. AP400 rear panel connectors