Specifications
38
Prosilica GT Technical Manual V3.2.0
Number of frames
The number of frames (
StreamHoldCapacity
) depends on resolution, pixel
format, and GVSP packet size. The stated number of frames is typical for full
resolution, 8-bit pixel format (
Mono8
or
Bayer8
), and a
GevSCPSPacketSize
=
8192
bytes per packet.
Resolution and ROI frame rate
Resolution and ROI frame rate is listed after the specification table. The resulting
frame rate from changing sensor height from full image to a single line. Unless
otherwise noted, sensors do not give an increase in readout speed with a
reduction in width. However, in cases where a camera is limited by frame rate due
to bandwidth restrictions, a reduction in width provides a frame rate increase.
Cameras with a “burst mode” frame rate are able to output more data than the
maximum available bandwidth (
124 Mbps
), and have a frame rate increase with a
reduction in width.
Resolution and ROI measurements
•
Data was generated using
StreamBytesPerSecond
=
124
Mbps
(full
bandwidth), minimum exposure, full resolution, and an 8-bit pixel format.
Frame rate may be lower if using network hardware incapable of 124 Mbps.
•
For maximum speed advantage on quad-tap CCD sensors, ROIs are center
image, where feature
OffsetY
= (full sensor height – ROI height)/2.
•
BinningVertical
is vertical row summing of charge on sensor sensors before
readout. The frame rate for an ROI at the same effective height as binning is
slower because the sensor still needs to read out the “fast readout rows” in
ROI mode.
Frame rate and readout
Although the sensor is capable of higher frame rates, readout is limited by GigE
bandwidth and exposure value. You can improve frame rates with an ROI and
shorter exposure values.
