Chapter 3
Signal Connections
NI PCIe-1427 User Manual
3-2
ni.com
MDR 26-Pin Connector
The MDR 26-pin connector provides reliable high-frequency transfer rates
between the camera and the image acquisition device. To access this
connector, use a 3M Camera Link cable. Refer to the
Camera Link Cables
section of Appendix A,
Cabling
, for additional information about Camera
Link cables, including available cable lengths and ordering information.
Figure 3-2 shows the NI 1427 MDR 26-pin connector assignments. Refer
to Table 3-1 for a description of the MDR 26-pin signal connections.
Figure 3-2.
MDR 26-Pin Connector Pin Assignments
Table 3-1.
MDR 26-Pin Connector Signals
Signal Name
Description
X<3..0>±
LVDS Base configuration data and enable signals from the camera to the
image acquisition device.
XCLK±
Transmission clock on the Base configuration chip for Camera Link
communication between the image acquisition device and the camera.
SerTC±
Serial transmission to the camera from the image acquisition device.
SerTFG±
Serial transmission to the frame grabber from the camera.
CC<4..1>±
Four LVDS pairs, defined as camera inputs and image acquisition device
outputs, reserved for camera control.
On some cameras, the camera controls allow the image acquisition device to
control exposure time and frame rate.
1
2
3
4
5
6
7
8
9
10
11
12
1
3
14
15
16
17
18
19
20
21
22
2
3
24
25
26
DGND
CC(4)–
CC(
3
)+
CC(2)–
CC(1)+
S
erTFG+
S
erTC–
X(
3
)+
XCLK+
X(2)+
X(1)+
X(0)+
DGND
DGND
CC(4)+
CC(
3
)–
CC(2)+
CC(1)–
S
erTFG–
S
erTC+
X(
3
)–
XCLK–
X(2)–
X(1)–
X(0)–
DGND
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