LG 32LG3DCH Setup Guide - Page 11

Pillow Speaker Setup Set up pillow speaker after Commercial Mode Setup and Cloning procedures are complete. SPEAKER SWITCH Connect a Pillow Speaker to the LCD TV/Monitor 1. Connect the Pillow Speaker to the output jack on the back of the TV. 2. Either: • Slide the control switch to PILLOW SPEAKER on the rear panel of the TV to control TV and hear audio on pillow speaker. • For TV speakers sound with pillow speaker control, set the control switch to NORMAL SPEAKER. Use a pillow speaker that is a UL recognized pendant control bearing the warning: "Risk of fire if used in oxygen enriched atmosphere. Keep pendant control away from oxygen equipment." Controlling the TV with Serial Data The TV is capable of being controlled by a single-wire, serial data signal. This is an LG patented technology and is being implemented by certain brands of "smart" pillow speakers. Controlling the TV with Mechanical Switches Pin 4 (common) is momentarily connected to pin 1, 3, or 6 via push-action switches to control Power On/Off and Channel Up/Down. These pins are at +13 volts DC (when measured from pin 4) with the switches open. Current draw is 8 mA when a switch is closed. (This operation is identical to previous models using the 5-wire interface, except that only +7 volts DC was supplied and current draw was only 2.5 mA.) Pin No. 1 2 3 4 5 6 Description External TV On/Off switch. (Not used) External Channel Up switch or Data in. Common connection for control, data, and audio output. Impedance to earth ground is a 10-meg resistor in parallel with a 1100 pf capacitor. Isolated audio output. Nominal 14 ohm source impedance with short circuit protection. Intended for a pillow speaker with a low-impedance pad-type volume control. External Channel Down switch. PILLOW NORMAL SPEAKER SPEAKER PILLOW SPEAKER TV SPKR VOLUME CONTROL TV ON/OFF CHAN DOWN 4 5 63 1 2 (MALE PLUG) CHAN UP 1 4 2 5 3 6 3 1 4 2 5 6 TV ON/OFF OPEN CHAN UP/DATA IN COMMON AUDIO OUT CHAN DOWN 206-4096 11