Basler SCOUT LIGHT User Manual download pdf (Page 146)

Using Multiple Cameras on a Single Bus and Managing Bandwidth

138 Basler scout light

10.2.1 Recommended Packet Size

When you change the value of the packet size setting on a camera, there is something that you

must keep in mind. If you lower the packet size setting, the camera takes longer to transmit each

acquired image. And if you lower the packet size enough, it will begin to restrict the maximum frame

rate that the camera can achieve. A read only parameter called the Recommended Packet Size can

help you avoid this problem.

The recommended packet size parameter indicates the lowest value you can use for the packet size

setting without restricting the camera’s maximum allowed frame rate. Assume, for example, that

you checked the packet size parameter value and you found it to be 2400. This would mean that if

you set the camera’s packet size to 2400 bytes or more, the camera’s maximum allowed frame rate

would not be affected by the packet size setting. And if you set the packet size lower than 2400, the

camera’s maximum allowed frame rate would be affected. The farther below 2400 you set the

packet size, the more restricted the maximum frame rate would be.

You read the value of the Recommended Packet Size parameter from within your application

software by using the pylon API. The following code snippet illustrates using the API to get the

parameter values:

// RecommendedPacketSize

int64_t recommendedPacketSize = Camera.RecommendedPacketSize.GetValue();

For detailed information about using the pylon API, refer to the Basler pylon Programmer’s Guide

and API Reference.

You can also use the Basler pylon Viewer application to easily set the parameters.

For more information about the pylon Viewer, see Section 3.1 on page 17.

For more information about the camera’s maximum allowed frame rate and how it can be restricted

by the packet size setting, see Section 6.10 on page 65.

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Basler SCOUT LIGHT User Manual Page 146