Functional Description
VIM301
V I M 3 0 1 U s e r M a n u a l
26
© 2 0 1 5 F a s t w e l v . 0 0 2
3.2.11
Video Input: Four Channels
Up to four analog video cameras (NTSC/PAL/SECAM) can be connected to XP11 header
(versions -03 and -05). Their signals are routed to Philips Semiconductor
SAA7111A EVIP
(Enhanced Video Input Processor); digital signal is then transmitted to the Video Input Port of
L video processor.
Video data stream can be sent to screen directly using the Hardware video window function
realized in SM722 controller. The video window is scalable and its position on screen can be
adjusted to combine the video image with software-generated information.
Video frame can also be saved to disk or processed (e.g. compressed), however, video capture
frame rate is limited by the performance rate of VIM301 operating in Slave mode via PCI bus and
CPU processing power: at maximum resolution of 720
×576 video capture frame rate is not more
than 4 fps. Thus, the Hardware video window output is considered the main purpose of the video
input subsystem.
For WinXP/WinXPe operating systems the video capture function of VIM301 is enabled with
DirectShow driver from Silicon Motion.
+12 V power voltage for video cameras is supplied to XP11 connector from PC/104-Plus
connectors. If +12 V voltage is not supplied via the stack connectors, an auxiliary power supply unit
can be used to supply this voltage via the optional XP1 connector. A common ground bus is
required for an external power supply and for the power supply unit in stack.
NTSC, PAL or SECAM video signals are received from four multiplexed analog channels. Video is
captured with the following parameters:
Video input frame rate: NTSC
– 30 fps, PAL/SECAM – 25 fps;
Maximum resolution and color depth: NTSC
– 720×504, 16 bpp, PAL/SECAM –
720×576, 16 bpp;
Video capture frame rate in PCI-slave mode for NTSC/PAL/SECAM signal with
maximum resolution
– not more than 4 fps.
XP11 connector type is Leotronics 4447-3120. Recommended mating connectors for the cable:
Leotronics 2040-3122 IDC connector or Leotronics 2067-2122 connector with Leotronics 2066-
2000 contacts for crimping
XP11 connector pinout is presented in the table below.
Table 3.13:
XP11 Connector Pinout
Contact
Signal
Contact
Signal
1
+12V
2
AI11
3
GND
4
+12V
5
AI12
6
GND
7
+12V
8
AI21
9
GND
10
+12V
11
AI22
12
GND
Figure 3.13:
XP11 Connector
