What type of cable does Sealevel recommend?
The demands of the application will determine the quality and type of components needed. A quality shielded cable is always a good place to start. If you are terminating your own cables, connect one end of the shield to chassis ground and leave the other end of the shield floating. If using RS-422, RS-485, RS-530 or another differential signal use twisted pair cable. Connect each twisted pair to the same set of signal pins (i.e., TX+/TX- would be one twisted pair of conductors and RX+/RX- another set of twisted pair conductors). This helps to cancel out noise or voltage differences that are induced or radiated into untwisted cables. If running long distances choose a low capacitance cable. Try to avoid running communication cables near AC power lines, fluorescent lights, transformers or any devices with a strong magnetic field. Make sure connections are clean and secure and thumbscrews are tightened. High-quality shielded cables are included with certain Sealevel serial devices and are