Sigma LBA-708, LBA-710, LBA-714PC, LBA-300, LBA-712, LBA-500PC Digital Camera Option, I/O Connections

Chapter 7 DIGITAL CAMERA OPTION

7.1 Digital Camera Option

This section will discuss how to interface a Digital Camera with an LBA- 400/500/700/708/710/712/714PC-Dequipped with the Digital Camera Option. This option is identified by the presence of a –Din the title bar model designation. The frame grabber will also be provided with a short ribbon cable adapter that plugs into the frame grabber and has a 50 pin connector attached to a PC mounting bracket.

7.2 I/O Connections

The digital camera connector is a 50 pin standard SCSI-2 style, however the circuit connections are NOT SCSI compatible. A typical compatible cable assembly is AMP 750254-2. Sample compatible connector / cable components are:

•	Plug	AMP 750913-5 for .032”-.036” OD, 28 awg wire
•	Plug	AMP 1-750913-5 for .029”-.031” OD, 28 awg wire

•HousingAMP 749193-2 for .400” max. cable OD

• Cable Madison SPEC4084-5A, or 50SD08TIA

The signal inputs to the LBA must be differential RS-422 or RS-644 (LVDS) compatible. Each input pair is terminated into 110 ohms at the LBA-PC. For good noise immunity and signal integrity, we recommend a twisted pair cable with a characteristic impedance of about 100-120 ohms per pair with an overall shield.

There is not an industry standard for digital camera connectors, so each camera type will require a custom interface cable assembly. Consult your camera operator’s manual for particular connector requirements. Most cameras will have similar output signal functionality, while each will have slightly different signal timing properties.

The Figures below describes the signal pin outs for the 50-pin digital camera connector based on the model frame grabber in use. The first figure is for the older LBA-400/500 models while the second figure is for the newer LBA-7XX models.

Note: Cables for LBA-400/500 models that support 12 bit cameras will work as is with the LBA-7XX models. Cables for 8 or 10 bit cameras are not compatible with the LBA-7XX models and must either be rewired or replaced with newer designs. Contact the Spiricon Service or Sales department to resolve any camera cable compatibility issues.

Operator’s Manual 148 LBA-PC