A/d conversion, Color decoding, Accuracy – National Instruments PCI-1411 User Manual

Page 28: External connections

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Appendix A

Specifications

IMAQ PCI/PXI-1411 User Manual

A-2

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A/D Conversion

Quantity ..................................................One 8-bit 2X oversampling

for composite video
Two 8-bit 2X oversampling
for Y/C (S-Video)

Dynamic range........................................46 dB typ

Sampling Frequency

RS-170/NTSC..................................27.54 MHz (double rate

of square pixel

CCIR/PAL .......................................29.5 MHz (double rate

of square pixel)

Color Decoding

Composite video

Luma path........................................Chroma trap filter and/or

line comb

Chroma path ....................................Bandpass filter and/or line comb

Accuracy

Calibrated

Luma level at DC.............................+/– (1% of value and 1% of white)

(tentative)

Demodulated chroma level at DC ...+/– 2% (tentative)

Memory

Onboard memory ....................................16 MB synchronous

dynamic RAM

LUTs .......................................................Three 256

×

8 (RGB only)

External Connections

Trigger sense...........................................TTL

Trigger level ...........................................Programmable (rising or falling)

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