18
INST
ALLA
TION
configur
A
tion
OPERA
TION
FUR
THER
INFORMA
TION
INDEX
RX (receiver) unit configuration
In the ALIF system, it is the RX unit (receiver) that determines where and how data
signals are sent (and received) by the
TX unit
. Although numerous topologies (one-
to-one, one-to-many, many-to-one, etc.) are made possible by the ALIF system, they
are all dependent on two underlying modes of operation: either
Unicast
or
Multicast
transmission. Where multicast transmission is not invoked for video and/or audio data,
operation will be automatically served by unicast network transmission technologies.
The RX unit setup (using the System Configuration page of its browser-based
configuration utility) is concerned with four main factors: Its own IP address details, the
data streams to enable/disable, the IP address of the TX unit and multicast transmission
details. Other pages, such as
USB Settings
,
System Messages
,
Firmware Upgrades
and
Reboot
are generally not used or altered during the majority of installations and are
discussed elsewhere in this guide.
Configuring the RX unit
1 Display the RX unit
System Configuratio
n
page.
2 In the System Configuration section, ensure that the System IP address and System
Netmask for this RX unit are correct. Their default settings are 169.254.1.32 and
255.255.0.0 respectively. Where changes are necessary, enter the new values and click
the
Update Now
button. The System IP Address that is set here will be sent to the
TX unit as the destination for transmitted data (when operating in unicast mode). The
Gateway entry is only necessary when the TX unit is located on a separate network to
the RX unit.
3 Check that the data streams (Enable Video, Enable Audio and Enable USB - plus Enable
Serial, if used) are enabled (ticked) or disabled (unticked) as appropriate. There are
similar options within the TX unit configuration; If one of these options is ticked in
one unit but unticked in the other, then that data stream will remain disabled. If you
make a change, click the Update Now button.
4 If necessary, alter the Audio Input Type to match your audio input. The
line
option is for
a stereo line input,
mic
and
mic boost
are for mono microphones, the latter benefiting
from a +20dB gain boost.
5 In the Target Transmitter Unit Settings section, enter the IP address for the TX unit that
will be supplying the video, audio, USB and serial data streams. (See also step 7 overleaf).
6 The
Use ETH2
setting controls an optional feature that can be used when the ALIF 1000
receiver is linked to an ALIF dual (2002 or 2112T) transmitter. This takes advantage
of the extra Teaming port of those transmitters to provide a secondary (redundant)
data feed. Once enabled, if the primary link fails for any reason, there will be a short
delay for a few video frames (and possibly some on-screen corruption) as all the data
packets are rearranged to be sent down the secondary link.
If required, tick the
Use ETH2
option to enable the feature and enter the IP address of
the Teaming port (ETH2) of the transmitter whose primary IP address is declared in the
field above. It is important that the primary and secondary ports are both derived from
the same ALIF dual transmitter otherwise both links will fail. (See also step 8 overleaf).
continued
See
Appendix B
for individual explanations of the controls.