The PIXCI® SV4 imaging board can capture and store full resolution color images to DRAM on a burst mode PCI motherboard
provided that other devices do not compete for PCI bus bandwidth. The data transfer capabilities of the motherboard may limit
the size of the image that the PIXCI® SV4 imaging board can transfer to memory on the motherboard. Some PCI motherboards
do not support burst mode on the PCI bus. Some PCI motherboards must have their configuration ROM set to enable PCI bus
burst mode. PCI bus transfers from other devices will compete for data transfer time with images to be transferred from the
PIXCI® SV4 imaging board to memory on the motherboard. ISA bus transfers will also compete for data transfer time with
images to be transferred from the PIXCI® SV4 imaging board to memory on the motherboard. If a PC or motherboard has not yet
been selected, contact EPIX for suggested motherboards.
The capabilities of the S/VGA board may limit the number of images that can be displayed per second, the number of colors that
can be displayed, or the size of the image that can be displayed. An AGP bus VGA board is preferred and at least a PCI bus
S/VGA board is recommended to display images from the PIXCI® SV4 imaging board. If an S/VGA board has not yet been
selected, contact EPIX for suggested S/VGA boards.
EPIX can provide a complete imaging system including camera, cables, power supply, and computer with the PIXCI imaging
board and XCAP software installed.
2. Connectors
The PIXCI® SV4 imaging board has four connectors which are accessible thru the bracket that mounts the board to the computer
chassis. From the top of the bracket to the bottom, the connectors are: Y/C, BNC1, BNC2, and DSUB. Silkscreen labels identify
each connector on the PIXCI® SV4 imaging board.
2.1. The PIXCI® SV4 Imaging Board Video Signal Descriptions
YC, is the S-Video signal input connector. The ''Y'' signal level is 0 to 1V terminated with 75Ohm to ground. The ''C'' signal level
is 0 to 0.714V terminated with 75Ohm to ground. The Y and C inputs have low pass filters in the video path.
S-Video Connector
BNC1 is an analog video input connector. The analog video input signal level should be 1 volt peak to peak with the video portion
positive and the sync tips negative. The minimum composite video input signal that can be amplified to provide 0 thru 255 grey
levels is 0.4 volts peak to peak. The maximum composite video input signal that can be amplified to provide 0 thru 255 grey
levels is 2.5 volts peak to peak. The input is terminated in 75Ohm to ground. The BNC1 video input has a low pass filter in the
video path.
BNC2, is identical to BNC1.
2.2. DB15 Connector
The connector is a female 15 pin D-Subminiature connector (AMP PN 748390-5). Eight pins are used for external inputs and
outputs. Seven pins are connected to ground. The signal levels are TTL. Each signal has a 1K ohm pull-up resistor to +5 volts.
EPIX' XCAP software treats bits 0 thru 3 as inputs and bits 4 thru 7 as outputs.
PIXCI® SV4 User's Manual
http://www.epixinc.com/manuals/pixci_sv4/index.htm
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