Chapter 5
Configuration Utility
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National Instruments Corporation
5-21
PCI/PXI-1408 and NI-IMAQ for Win95/NT
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CSYNC External Mode—In CSYNC external mode, the
PCI/PXI-1408 receives an incoming CSYNC to generate
the PCLK, HSYNC, and VSYNC signals. The 1408 device
acquisition control circuitry uses these signals to store the
acquired data in PCI memory. You can control each of these
signals in software. The board parameters adjust pixels per line
(to generate PCLK), horizontal start (to generate HSYNC), and
vertical start and lines (to generate VSYNC).
When you select CSYNC external mode, the CSYNC polarity
field also becomes valid. You can configure CSYNC to be
active high or active low (rising or falling edge sensitive).
Note:
The Signal Polarity, CSYNC Source, and PCLK Select options are active
in this mode.
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External Lock Mode—In external lock mode, the 1408 device
receives PCLK, HSYNC, and VSYNC from the external
connector. When you select external lock mode, the HSYNC
polarity, VSYNC polarity, and PCLK polarity fields also
become valid. You can configure each signal to be active high
or active low (rising or falling edge sensitive).
Note:
The Signal Polarity option is active and the CSYNC Source and
PCLK Select options are disabled in this mode.
•
CSYNC Source —You can specify the input source for the
CSYNC signal as either channel 0, channel 1, channel 2, channel 3,
or external.
•
Signal Polarity—You can control the signal polarity for the
CSYNC, HSYNC, VSYNC, and PCLK signals. The default is True
High.
•
Misc Settings—The miscellaneous settings let you adjust the
StillColor settings and include:
–
StillColor Mode—This control selects the acquisition mode.
Settings include:
• Disabled—Disables StillColor and enables
monochrome mode.
• RGB—Enables color mode with Tri-CCD cameras. This
mode uses channels 1, 2, and 3, but you need to select a
camera file only for channel 1.
