June 2015 - Ed.2.1
Audio over IP decoders E411, E413, E415 & E417 technical manual
Page 10
When the “A” and “B” terminals are connected, the input is considered active.
As said, the inputs are designed to be driven by dry contacts (i.e. switches), but can also be controlled by
other interfaces like open collector. In those cases, special care must be taken to assure that the input is
activated properly. If needed, please, contact us at
for more information.
3.6.2.
Outputs
Each output has a SPDT relay. So, it can be used as “normally open” or “normally closed”.
The drawing in the rear plate of the device show the status when the output is inactive: The center
terminal is connected to the right one:
C
NO
NC
Figure 5: Digital outputs
The characteristics of the relays are:
Maximum operating current: 1A
Maximum operating voltage: 125VAC or 60VDC
3.7
Audio Outputs
As previously said, decoders accept several audio input channels, but can only play one at a time.
The resulting audio output is sent simultaneously to the three possible audio outputs: Headphone, line out
and amplified output (only in E415 and E417).
3.7.1.
Headphone Output
All models have a 3.5 mm stereo jack headphone output (
). This output is particularly useful to retrieve
the IP address of the decoder by pressing the internal button 'IP / RD' (
).
3.7.2.
Line Out
The stereo audio line out, also present in all decoders, is accessible via two RCA connectors (
), with a
level of 1.8Vpp on 10kΩ.
The white connector corresponds to the left channel and the red one to the right channel.
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