User`s manual

LOLA: Low Latency Audio Visual Streaming System
the
– BitFlow ALTA-AN1 grabber with SDK 5.60 drivers
which supports both analog b/w and color cameras. A possible camera for LOLA for b/w service is
the
– Sony HR50 b/w analog.
In case of color video acquisition the video camera must provide component analog color
output (RGB or YpbPr). For color operation the PC running LOLA should provide enough CPU
performance to deal with data processing, i.e. an i5/i7 CPU based workstation is recommended. The
following color camera has been extensively tested with LOLA (and a camera files are provided):
– Hitachi KP-FD30 color analog.
– Toshiba IK-TF5 color analog.
To connect the cameras to the video grabber you need appropriate analog cables. Analog
cables length can vary, and up to now cables up to 12m have been successfully used. Longer cables
should work fine as well, but testing that the performance does not degrade is recommended. These
cables can be easily created starting from high quality VGA cables, both for b/w and color analog
cameras. A schematic of the various cables pinout is included in Appendix C.
LOLA also experimentally supports digital Camera Link grabber and cameras (B/W and
Color), and starting from the next version (1.4) it will support CoaXPress standard cameras. See
Appendix A for details. See also Appendix B for further considerations and a short list of
compatible video cameras.
2.3. Video output hardware requirements
LCD monitors introduce additional latency w.r.t. CRT monitors. Use a fast LCD monitor
with real low latency/response time (equal to or less than 5 milliseconds) or an old style, but faster,
CRT monitor/projector.
The way you connect the monitor to the PC may also cause additional latency. Use VGA,
DVI-D or RGB connectors, avoid HDMI. In case you use any additional device, like video splitters,
cable extenders, etc., please ensure that they do not add significant further latency to the video
output chain. If you need dual video output, try to use graphic cards in the PC which already have
native dual output, instead of using external splitting devices.
2.4. PC hardware requirements
The LOLA software runs on a typical mid/high-end multimedia PC. A suggested
configuration consists in an Intel dual/quad core based system (for color support we recommend i5
or better i7 processors with 4 core and Hyperthread support), with at least 4 GB RAM and the
following characteristics:
– Mid/High performance motherboard providing PCI Express bus and supporting DDR3 ram
technology.