Output Signals; Pixel Clock; Line Valid Bit; Frame Valid Bit - Basler A500k User Manual

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Camera Interface

2.5 Output Signals

Data is output from the A500
in section 2.5.1, the Line Valid signal in section 2.5.2, the Frame Valid signal in section 2.5.3, and
the video data in section 2.5.4. How the Video Data is output is described in sections
2.5.7. Section
The A504
uses a modification of the Camera Link standard. The Camera Link standard was
k
modified to be able to transmit 80 bits of data in parallel. Frame grabbers are available for the
Basler-specific bit assignment.

2.5.1 Pixel Clock

As shown in Figures
pins (see also Table 2-6, Table 2-7, and Table 2-10). For the A504
assigned to the YClk and ZClk pins of the Channel Link transmitter (see also Table 2-8 and Table
2-9), as defined in the Camera Link standard.
The pixel clock is used to time the sampling and transmission of pixel data. The Channel Link
transmitter(s) used in A500
rising edge of the clock.
The frequency of the pixel clock is 67.58 MHz for the A504
With each Pixel Clock signal, 10 pixels for the A504
are transmitted.
k
A501

2.5.2 Line Valid Bit

As shown in Figures
Pixel data is only valid when this bit is high. 128 (A504
are required to transmit one full line. In accord with the Camera Link standard, line valid is
connected to the Channel Link transmitter/receiver pair X, and in the A504
and Z (Figures

2.5.3 Frame Valid Bit

As shown in Figures
transmitted. One frame can contain 2 to 1024 Line Valid signals. Line valid and pixel data are only
valid when the frame valid bit is high. In contrast to the Camera Link standard, frame valid is only
connected to Camera Link X in the A504

2.5.4 Video Data

Table
2-6
and Figure
Link transmitters X, Y, and Z of the Camera Link in the camera and the corresponding output pins
on the Channel Link receivers X, Y, and Z in the frame grabber for the A504
assignment for the frame valid bit and the line valid bit.These signals and the data transmitted via
the three Channel Link transmitter/receiver pairs is not assigned according to the Camera Link
standard. The Basler-specific connection is described in Table 2-6. Note that frame grabbers are
available for the Basler-specific pin assignment.
Tables
2-7
to
Channel Link transmitters X, Y, and Z of the Camera Link in the camera and the corresponding
output pins on the Channel Link receivers X, Y, and Z in the frame grabber for the A503
2-14
PRELIMINARY
using the Camera Link standard. The Pixel Clock signal is described
k
2.5.8
describes the Flash trigger output signal.
2-5
to
2-7
the pixel clock (PClk, also called strobe) is assigned to the XClk
cameras require pixel data to be sampled and transmitted on the
k
2-8
to 2-13, the line valid bit indicates that a valid line is being transmitted.
2-5
to 2-7, see also Tables
2-8
to 2-13, the frame valid bit indicates that a valid frame is being
2-5
show the assignment of pixel data bits to the input pins on the Channel
2-9
and Figure 2-6 show the assignment of pixel data bits to the input pins on the
and A503
k
, 8 pixels for the A503
k
), 160 (A503
k
2-6
to 2-10).
(see Table 2-6).
k
2.5.5
and A503
PClk is also
k
k
and 50 MHz for the A501
k
, and 2 pixels for the
k
) or 640 (A501
) Pixel Clocks
k
k
and A503
also to Y
k
k
. They also show the
k
k
Basler A500
and
.
k
. They
k

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