Penny+Giles Digital T-Bar controllers incorporate a high quality optical incremental encoder, generating two channels of quadrature output at 256 counts per channel.
This data can then be decoded by the host computer into directional movement.  

Key Features    
• Smooth precise control
• Digital output
• Maintenance free
• Compact and rugged
• Proven durability      
• Specification

 PGF5000 Digital Brochure (english)