June 2015 - Ed.2.1
Audio over IP decoders E411, E413, E415 & E417 technical manual
Page 9
3.4
IP address indication and default configuration recovery
The devices have an internal pushbutton (
) with two functions:
To indicate the IP address: When pressed momentarily (1 second), the IP address is said via the
audio outputs. Simply connect a headset to the output
to listen to the IP address.
To Reset to default settings: When pressed for more than 6 seconds, the default settings will be
restored.
To access the internal switch, use a small screwdriver or a wire (a paper clip can serve, for example).
3.5
Ethernet
The 10/100 Ethernet port
has Auto-MDIX capability.
The Auto-MDIX automatically switches from MDI to MDI-X and vice versa, allowing the connection of any
type of cable (straight or crossover) regardless of whether the module is connected directly to a computer, to
a switch / hub or other device.
There are two LEDs in the connector:
Green LED: indicates line activity. When blinking, the line is OK. If the LED is OFF, there is no link.
Amber LED: indicates the speed of the connection. If the LED is ON, the link is established at
100 Mb/s.; if OFF, at 10 Mb/s.
3.6
Digital I/O
The E413, E415 and E417 models have two digital inputs and two digital outputs located in terminal
.
The inputs can be used to trigger some audio sources activation. One of the most typical applications would
be to connect the “push to talk” button of a console to trigger the audio input in the E417.
Also can be used to control the volume of the background music being played as following:
Input 1, when activated (closed), increases the volume in 2 dB steps each 500 milliseconds.
Input 2 decreases the volume in the same way.
The outputs can control external devices triggered by the activation of one or several audio sources. For
instance, to control the power of an external amplifier in PA applications when audio is emitted and a
flashlight when the emergency channel is active.
3.6.1.
Inputs
Inputs are designed to be connected to a switch or dry contact and are optically isolated, as seen in the
schema:
GND
+5v
A
B
1
K
Figure 4: Digital inputs
8
1
6
10