Basic Operation & Standard Features
BASLER A102
f
3-35
DRAFT
3.13 Available Video Formats, Modes and
Frame Rates on Color Cameras
3.13.1 Standard Formats, Modes and Frame Rates
The following standard video formats, modes and frame rates are available on
A102
fc
color
cameras:
Format 2, Mode 0, FrameRate 2
( 1280 x 960, YUV 4:2:2, 16 bits/pixel ave, 7.5 fps )
Format 2, Mode 2, FrameRate 3
( 1280 x 960, Y Mono, 8 bits/pixel, 15 fps )
3.13.2 Customizable Formats and Modes
Format 7, Mode 0 and Format 7, Mode 1 are available on
A102
fc
color cameras.
Format 7, Mode 0
Format 7, Mode 0 is used to enable and set up the area of interest (AOI) feature described in
Section
3.6
. Format 7, Mode 0 is parameterized by using the Format 7, Mode 0 control and status
registers (see page
4-27
).
When the camera is operating in Format 7, Mode 0, the frame rate can be adjusted by setting the
number of bytes transmitted in each packet. The number of bytes per packet is set by the Bytes
Per Packet field of the Bytes Per Packet control register.
The value that appears in the Max Bytes Per Packet field of the Packet Para Inquiry register will
show the maximum allowed bytes per packet setting given the current AOI settings. When the
bytes per packet is set to the maximum, the camera will transmit frames at its maximum specified
rate. By default, the AOI is set to use the full sensor area and the bytes per packet is set to 4096.
If you set the bytes per packet to a value lower than the maximum, the camera will transmit frames
at a lower rate. The rate is calculated by the formula:
Keep in mind that when you lower the bytes per packet setting, the number of bytes needed to
transmit a frame (the packets per frame) will increase. Due to limitations in the DCAM structure,
a maximum of 4095 packets per frame is allowed. If you set the bytes per packet too low, the
number of packets per frame will exceed the 4095 packet limit and the camera will not transmit
frames properly.
L
When the
A102
fc
is operating in Format 2, Mode 2, it outputs the
raw data
for each
pixel, not the Y component as indicated in the DCAM specification. This is done so that
the
A102
fc
will have a standard output mode equivalent to the
A101
fc
. This type of output
is sometimes called “Bayer 8.”
L
When the camera is operating in Format 7, the Current Video Frame Rate control reg-
ister is not used and has no effect on camera operation.
Frames/Sec.
1
Packets per Frame x 125 µs
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