4-input frame grabber | Model 311
- High frame rate transfers to PC/104+
- Color or monochrome: PAL, SECAM, NTSC, RS-170, CCIR compatible
- 4 composite video inputs or 3 composite and one S-video
- 8 TTL I/O lines for camera control
- Programmable AGC, hue, contrast, saturation
Model 311 is a legacy product and is not recommended for new designs. Some of legacy products may be available but may have significant lead times and minimum order requirements. For new designs, use our Product Finder to find a comparable product or contact our Design Support Team.
Description
Model 311 is a PC/104+ board that captures uncompressed video from one analog NTSC/PAL input. It has four video inputs that allow up to four composite, or three composite and one S-video source to be connected to the board. A programmable video switch selects the input to be captured. Eight general-purpose digital I/Os (four in, four out) are provided for applications such as capture triggering and camera/illumination control.
Model 311 with 311TA termination board
Frame rate
Model 311 can transfer 30 frames per second with the supplied software. It supports a variety of digital formats including RGB24 and Y8 that are directly compatible with Windows bitmaps.
Synchronization
The Model 311 uses special circuitry to achieve horizontal and subcarrier synchronization to incoming video. It guarantees generation of the required pixel/line from a video source in which line length can vary by several microseconds. This circuitry allows the 311 adapter to quickly and accurately lock on to video signals, regardless of source. Since the technique is completely digital, the 311 can recognize unstable signals caused by VCR head switching and adapt the locking mechanism to accommodate the source.
Image scaling
Under software control, the 311 adapter can independently scale the X and Y dimensions of the captured frame. Full-resolution video may be reduced to any size down to the size of an icon. A software selectable digital filter is available to minimize aliasing artifacts induced by scaling.
A/D Conversion
The 311's signal processor uses two flash analog-to-digital converters; one for chrominance and one for luminance. Each A/D provides 2x over sampling of the camera signal. Over sampling, combined with analog anti-aliasing filters, significantly reduces the overall sensitivity to unwanted aliasing signals and enhances the 311's digital filtering.
The 311 is capable of sending just the luminance data to the host's image buffer. This feature speeds capturing monochrome images.
Specifications
| Capture rate | 30 frames/sec (NTSC, RS-170, CCIR)
25 frames/sec (PAL, SECAM) |
| A/D resolution | 8 bits luminance
8 bits chrominance |
| FIFO size | 560 bytes (280 pixels) |
| Output resolution | 768x576 (PAL, SECAM)
640x480 (NTSC, RS-170) |
| Y bandwidth error | 0.6 dB |
| Board dimensions | (W x H x D): 4.07 x 3.77 x .98 inches |
| Output format | Several |
| Input power | 5 V (at 280 mA) |
| Bus structure | PC/104+ |
| Video | ||
|---|---|---|
| Number of cameras | NTSC per channel frames/second | PAL per channel frames/second |
| 1 | 30 | 25 |
| 2 | 8 | 6 |
| 3 | 3 | 2 |
| 4 | 1 | 1 |
Model 311 board layout
Model 311TA dimensions
Documentation
| File | Version | Date M-D-Y | Type | Size |
|---|---|---|---|---|
| Model 311 Instruction Manual | 1.0.0 | 10-17-24 | 240 KB | |
| SDK Application Note | 1.0.0 | 10-17-24 | 2 KB | |
| Application Notes | ||||
| 311 Verified Computers | — | 10-17-24 | 40 KB | |
Downloads
| File | Version | Date M-D-Y | Type | Size |
|---|---|---|---|---|
| Windows 2000/XP Software Development Kit | 1.0.0 | 10-17-24 | ZIP | 973 KB |
| Updated Windows 2000/XP Driver Component | — | 10-17-24 | ZIP | 9 KB |
| Windows CE Software Development Kit | 1.0.0 | 10-17-24 | ZIP | 50 KB |
| Linux Software Development Kit (for kernel 2.4) | 1.0.0 | 10-17-24 | ZIP | 170 KB |
| Linux Software Development Kit (for kernel 2.6) | 1.0.0 | 10-17-24 | ZIP | 19 KB |
| QNX Software Development Kit | 1.0.0 | 10-17-24 | ZIP | 68 KB |
| Other Operating Systems | ||||
| Need a software development kit for another operating system? We can port our SDK to your OS for a NRE fee or, with a volume commitment, at no additional cost. Contact Sales for details. | ||||