HASSEB Audio over Ethernet User manual

November
7, 2017
HASSEB AUDIO OVER ETHERNET INSTRUCTIONS MANUAL
VERSION 1.1
hasseb Inc.
[e-mail]
www.hasseb.fi
HASSEB AUDIO OVER ETHERNET
hasseb Audio over Ethernet is an easy to use and portable device used to send
and receive lossless, realtime audio using Ethenet network. The device is
compatible with AES67 standard and can be used as a standalone device or
together with other AES67 compatible devices.
The device can operate as a stream sender or receiver. Standard 3.5 mm audio
plug is used to convert any external speaker or audio source to a network audio
receiver or source. The device is configured using a web user interface and mDNS
(multicast Domain Name System) protocol is supported to easily find the device
IP addresses from the network. For professional grade network audio systems
PTP (Precision Time Protocol) based time synchronization is required. The device
can act as IEEE1588 grand master to provide synchronization clock signal to the
network.
INSTALLATION
The device is powered through the USB connector using a 5 volts USB power
supply.
DHCP (Dynamic Host Configuration Protocol) support is enabled by default, so
the device will assign an IP address automatically. All Ravenna devices and their
names and IP addresses connected to the network can be found using any
software, capable of searching the network for mDNS supported devices. If you
have normal domestic network router, the web user interface of you router can
also be used to find the IP addresses of the connected devices.
WEB USER INTERFACE
The device can be configured for network, audio, and stream settings using any
web browser. Writing the IP address of the device to the address field of your
web browser, the configuration page will be opened. You can find the IP address
of the device from your network router or using free third party software such as
Bonjour Browser or MT Discovery.

November
7, 2017
HASSEB AUDIO OVER ETHERNET INSTRUCTIONS MANUAL
VERSION 1.1
hasseb Inc.
[e-mail]
www.hasseb.fi
Figure 1: A web browser is used to configure the device.
NETWORK SETTINGS
The hostname, IP address, subnet mask, and default gateway can be set using
the web interface. The DHCP can also be enabled or disabled. By default the
device uses DHCP to assign the network settings. The default hostname for the
device is hasseb-AoE-XX-XX, where XX-XX are the last two octets of the device
MAC address.After configuration of new network settings, the device will reboot
automatically.
STREAM SETTINGS
Stream settings are used to choose the AES67 stream received from the network.
The chosen stream name is stored to the internal memory of the device and will
be used by default after power down. The streams sent by hasseb Audio Over
Ethernet device will be named as AES67-stream (on ‘network_hostname’), where
‘network_hostname’ is the hostname of the device as defined in network
settings (for example AES67-stream (on hasseb-AoE-AB-CD)).
AES67 standard defines the audio stream following RTSP (Real Time Streaming
Protocol) used also for example in internet radio stations. The address of the
output stream is visible on the “RTSP stream address” field. In addition to
another hasseb Audio Over Ethernet device, the output stream can be listened
using any media player supporting RTSP protocol, such as VLC media player.

November
7, 2017
HASSEB AUDIO OVER ETHERNET INSTRUCTIONS MANUAL
VERSION 1.1
hasseb Inc.
[e-mail]
www.hasseb.fi
AUDIO SETTINGS
The audio settings are used to configure the analog audio signal as input or
output.
When the audio mode is configured as input, the device will convert the analog
audio signal to a 24-bit digital signal at a sampling rate of 48 kHz and send it out
as an AES67 stream. The name of the stream is shown in stream settings in the
“RTSP stream address” field.
When the audio mode is configured as output, the device will receive the AES67
stream as defined in stream settings, in the “Stream name” drop down box. The
input stream should be a 24-bit digital signal sampled at a sampling rate of 48
kHz.
The “Gain” slider can be used to adjust the gain of the input/output analog signal
between -100 and 100, where a gain of -100 means full attenuation and a gain of
100 means maximum amplification. If the gain is set to 0, the analog signal is not
amplifier or attenuated.
STATUS LED
There is an LED inside the device to indicate the status of the device. The LED will
blink once a second when the device is operating properly.
RESET FACTORY DEFAULTS
If something goes wrong with the network settings and you cannot access the
device anymore through the network, you can reset the factory defaults using
the push button on the circuit board. To access the button you need to open the
enclosure.
To reset the factory default settings, press the push button and power up the
device. Keep the push button pressed for 10 seconds. This will reset the setting
to factory defaults. The default network configuration is DHCP on.

November
7, 2017
HASSEB AUDIO OVER ETHERNET INSTRUCTIONS MANUAL
VERSION 1.1
hasseb Inc.
[e-mail]
www.hasseb.fi
Specifications
Input voltage
5 VDC
Input current
300 mA
Input audio voltage
2.1 VRMS
Output audio voltage (1 kΩload)
2.1 V
RMS
Operating temperature
0 – 50 °C
Dimensions
65 mm x 65 mm x 30 mm
Weight
100 g