Network Related Camera Parameters and Managing Bandwidth
52 Basler pilot
Contact Basler technical support if you need further assistance.
Step 2 - Set the Packet Size parameter on each camera as large as possible.
Using the largest possible packet size has two advantages, it increases the efficiency of network
transmissions between the camera and the PC and it reduces the time required by the PC to
process incoming packets. The largest packet size setting that you can use with your camera is
determined by the largest packet size that can be handled by your network. The size of the packets
that can be handled by the network depends on the capabilities and settings of the network adapter
you are using and on capabilities of the network switch you are using.
Unless you have already set the packet size for your network adapter during the installation of the
Basler pylon software, check the documentation for your adapter to determine the maximum packet
size (sometimes called “frame” size) that the adapter can handle. Many adapters can handle what
is known as “jumbo packets” or "jumbo frames". These are packets with a maximum size of 16 kB.
Once you have determined the maximum size packets the adapter can handle, make sure that the
adapter is set to use the maximum packet size.
Next, check the documentation for your network switch and determine the maximum packet size
that it can handle. If there are any settings available for the switch, make sure that the switch is set
for the largest packet size possible.
Now that you have set the adapter and switch, you can determine the largest packet size the
network can handle. The device with the smallest maximum packet size determines the maximum
allowed packet size for the network. For example, if the adapter can handle 8 kB packets and the
switch can handle 6 kB packets, then the maximum for the network is 6 kB packets.
Once you have determined the maximum packet size for your network, set the value of the Packet
Size parameter on each camera to this value.
Tip
The manufacturer’s documentation sometimes makes it difficult to determine
the maximum packet size for a device, especially network switches. There is
a "quick and dirty" way to check the maximum packet size for your network
with its current configuration:
1. Open the pylon Viewer, select a camera, and set the Packet Size param-
eter to a low value (1 kB for example).
2. Use the Continuous Shot mode to capture several images.
3. Gradually increase the value of the Packet Size parameter and capture a
few images after each size change.
4. When your Packet Size setting exceeds the packet size that the network
can handle, the viewer will lose the ability to capture images. (When you
use Continuous Shot, the viewer’s status bar will indicate that it is
acquiring images, but the image in the viewing area will appear to be
frozen.)
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