TC XXMSERIALControl systems for audio-visual and industrial applications use RS-232 which is a 2-way standard which allows the control system to send commands and receive feedback. RS-232 (and RS-485) uses serial cable which has 9-pin d-sub connectors which look like a VGA connector but instead of three rows of pins they only have two. – 9-pin D-sub (female) to 9-pin D-sub (female) – Colour: White – Nickel-plated connectors – Sheath: PVC, outer diameter: 5 mm (0.20?) – Conductor thickness: 28 AWG – Pins wired straight through (i.e. 1 to 1, 2 to 1, etc) – Drain wire laid between aluminum mylar and braid – Al-Mg alloy wire overall – Shield: > 65% coverage braided shield – Impedance: at 10 MHz, 75? (coaxial cable) – Resistance 20?(?/1000 m) 237.25