Point Grey Flea3 GigE - Frame Rates; Calculating Maximum Possible Frame Rate

Point Grey Flea3 GigE Technical Reference 8 Flea3 GigE Attributes
8.4 Frame Rates
The tables on the following pages show the supported pixel formats and mode combinations, along with achievable
frame rates at varying resolutions, for each camera model.
In some cases, enabling Jumbo Frames on the NIC can help to achieve maximum frame rates. Jumbo Frames can be
enabled using the GigEConfigurator.
8.4.1 Calculating Maximum Possible Frame Rate
Theoretically, the maximum achievable frame rate for each camera on the network depends on available bandwidth,
bytes per pixel, and resolution.
Available bandwidth depends on Packet Size and Packet Delay. For information
about calculating available bandwidth, see Determining Bandwidth Requirements.
Bytes per pixel (BPP) is related to pixel format.
n 8-bit = 1 BPP
n 12-bit = 1.5 BPP
n 16-bit = 2 BPP
n 24-bit = 3 BPP
The theoretical frame rate (FPS) that can be achieved can be calculated as follows:
Frame Rate in FPS = (Bandwidth / (W x H xBPP)) / Number of Cameras
An example for FL3-GE-13S2:
Assuming a 1288 x 964 image, with an 8-bit pixel format, using 38.5 MB/s bandwidth, the calculation would be:
Frame Rate = (Bandwidth / (W x H x BPP)) / Number of Cameras
Frame Rate = (38500000 / (1288 x 964 x 1)) / 1
Frame Rate = 31 FPS
Revised 10/29/2013
Copyright ©2010-2013 Point Grey Research Inc.
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