Pixel Data; Ieee 1394 Device Information - Basler A101f User Manual

Camera Interface

2.2.2.3 Pixel Data

Pixel data are transmitted as isochronous data packets according to version 1.20 of the "1394 -
based Digital Camera Specification" issued by the 1394 Trade Association. The first packet of
each frame is identified by a 1 in the sync bit of the packet header.
The video data for each pixel is output in an 8 bit format. Thus the range of intensity for each pixel
includes 256 gray levels. The digital gray value of 0 corresponds to black and the digital gray value
of 255 to white.

2.2.3 IEEE 1394 Device Information

The A101 uses an IEEE 1394a compliant physical layer device to transmit pixel data. Detailed
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spec sheets for devices of this type are available at the Texas Instruments web site (www.ti.com).
Figure 2-3: I/O Schematic
2-4
DRAFT
1
16
2
15
PC3Q64Q
1 16
1
2 15
PC3Q64Q
2.7 K
1 16
1
2 15
PC3Q64Q
2.7 K
Camera
Housing
Shield
Shield
To 1394a
TPA+
Compliant
TPA-
Physical
TPB+
Layer
TPB-
Controller
VG
VP
Gnd
+12 VDC Input
Socket
390 Ω
ExTrig
ExTrig
IntEn+
IntEn-
TrigRdy+
TrigRdy-
3
BC847
2
3
BC847
2
6
5
4
3
2
1
IEEE
1394
1
6
2
7
3
8
4
9
5
9-Pin
Plug
BASLER A101
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