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      <page pageid="150" ns="0" title="Terminal block connections, recommended practice">
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          <rev xml:space="preserve">The following recommendations apply to spring and screw cage terminal blocks (TBs) on Sensoray products.

==Strain relief==

It is recommended to secure all wires with strain reliefs. This is especially important if the wires will be flexed or subjected to vibration or pulling forces.

==Wire ferrules==

Wire ferrules are recommended to prevent contact loss due to oxidation or wire deformation and, in the case of stranded wire, to avoid shorts caused by splayed or broken strands.

&lt;gallery mode=packed widths=250px heights=110px&gt;
File:Wire ferrule.jpg|Wire ferrule crimped onto a stranded conductor
File:Twin wire ferrule.jpg|Use a twin wire ferrule such as this to connect two wires to a common terminal 
&lt;/gallery&gt;

When choosing a ferrule, ensure that:
* Ferrule inside diameter is large enough to accommodate the wire.
* Ferrule outside diameter is not too large to fit into the TB.

A crimping tool is used to secure the wire to the ferrule. Always use the proper tool, which will:
* Crimp without damaging the ferrule or wire.
* Leave a textured surface that is readily gripped by the terminal.

To assemble:
# Insert the wire (or wires, in the case of a twin ferrule) into the ferrule and crimp.
# Insert the ferrule into the TB and tighten it in place.

==Stranded wire==

* Always use a wire ferrule.
* Do not insert bare strands directly into the TB.
* Do not apply solder to the strands.

==Solid wire==

* The use of a wire ferrule is recommended.
* It ''may'' be acceptable to insert bare wire into the TB. This should be avoided if the wire is subjected to vibration or pulling force, or if it would be significantly deformed by the compressive force of the TB jaws.
* Do not apply solder to the wire.</rev>
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      <page pageid="17" ns="0" title="UDP">
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          <rev xml:space="preserve">=== Streaming Video to VLC ===

VLC needs to be started first, before starting the capture device.  From the menu, select Media-&gt;Open Network Stream..., then enter the network URL '''udp://1234''', where 1234 is the UDP port number to use.  From the command line, you can use a capture program to pipe the video stream to the netcat utility: '''capture ... | nc -u localhost 1234''' where -u means to use UDP packets.

=== UDP buffer size ===

== Linux ==

On Linux, the UDP send and receive buffers sizes may be too small for high bandwidth video, which can result in corrupted video due to dropped packets.  Use the sysctl utility to set the '''net.core.rmem_max''' for max receive buffer size and '''net.core.wmem_max''' for the send buffer.  The value is in bytes.  For example, edit '''/etc/sysctl.conf''' to add the following lines, and use '''sysctl -p''' to load the new settings.

  net.core.rmem_max = 26214400
  net.core.wmem_max = 26214400

== Windows ==

The same issue may occur on Windows 8, Windows 10 or later versions.  To improve performance, create the DWORD values DefaultReceiveWindow and DefaultSendWindow under the registry key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AFD\Parameters.

    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AFD\Parameters]
    &quot;DefaultReceiveWindow&quot;=dword:00040000
    &quot;DefaultSendWindow&quot;=dword:00040000

These entries may be created by using regedit, or by creating a .reg file with the above text.  After these registry entries are created, reboot the machine for the new settings to take effect.</rev>
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