Basler A504k User Manual

Camera Interface
Basler A500k Series 2-13
PRELIMINARY
2.5 Output Signals
Data is output from the A500k using the Camera Link standard. The Pixel Clock signal is described
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 2.5.5 and
2.5.6. Section 2.5.7 describes the Flash trigger output signal.
The
A504k/kc uses a modification of the Camera Link standard. The Camera Link standard was
modified to be able to transmit 80 bits of data in parallel. Framegrabbers are available for the
Basler-specific bit assignment.
2.5.1 Pixel Clock
As shown in Table 2-7 for the A501k/kc and in Table 2-6 for the A504k/kc, the pixel clock is assigned
to the XClk, and for the
A504k/kc also for the YClk and ZClk pins (called strobe) of the Channel
Link transmitter, 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
A500k cameras
require pixel data to be sampled and transmitted on the rising edge of the clock.
The frequency of the pixel clock is 67.58 MHz for the
A504k/kc and 50 MHz for the A501k/kc. With
each Pixel Clock signal, 10 pixels for the
A504k/kc and 2 pixels for the A501k/kc are transmitted at
a depth of 8 Bits.
2.5.2 Line Valid Bit
As shown in Figures 2-7 to 2-10, the line valid bit indicates that a valid line is being transmitted.
Pixel data is only valid when this bit is high. 640 (
A504k/kc) or 128 (A501k/kc) Pixel Clocks are
required to transmit one full line. As in the camera link standard, line valid is connected to Channel
Link transmitter/receiver pair X, and in the
A504k/kc also Y and Z (see Table 2-6 and Table 2-7).
In contrast to the camera link standard, line valid is assigned to different pins in the
A504k/kc.
2.5.3 Frame Valid Bit
As shown in Figures 2-7 to 2-10, the frame valid bit indicates that a valid frame is being
transmitted. One frame can contain 2 to 1024 Line Valid signals. Line valid and pixel data is only
valid when this bit is high. In contrast to the camera link standard, frame valid is only connected
to Camera Link X in the
A504k/kc (see Table 2-6).
2.5.4 Video Data
Table 2-6 and Figure 2-5 show the assignment of pixel data bits to the input pins on the 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
A504k/kc. They also show
the 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 framegrabbers are
available for the Basler-specific pin assignment.
Table 2-7 and Figure 2-6 show the assignment of pixel data bits to the input pins on the Channel
Link transmitter X of the Camera Link in the camera and the corresponding output pins on the
Channel Link receiver X in the frame grabber for the
A501k/kc. They also show the assignment for
the frame valid bit and the line valid bit.

Basler A504k Specifications

General

Brand	Basler
Model	A504k
Category	Security Camera
Language	English