User`s manual

Camera Interface
2-4 BASLER A101f
DRAFT
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 A101f uses an IEEE 1394a compliant physical layer device to transmit pixel data. Detailed
spec sheets for devices of this type are available at the Texas Instruments web site (www.ti.com).
Figure 2-3: I/O Schematic
To 1394a
Compliant
Physical
Layer
Controller
Gnd
6
5
4
3
2
1
Shield
Shield
TPA+
TPA-
TPB+
TPB-
VG
VP
Camera
Housing
IEEE
1394
Socket
+12 VDC Input
2.7 K
16
15
1
3
2
BC847
PC3Q64Q
1
2
2.7 K
16
15
1
3
2
BC847
PC3Q64Q
1
2
16
15
1
6
2
7
3
8
4
9
5
390
Ω
1
2
ExTrig
ExTrig
IntEn+
IntEn-
TrigRdy+
TrigRdy-
PC3Q64Q
9-Pin
Plug