LG Hospital TV Pillow Speaker Setup and Interface Guide

Pillow Speaker Connections

Set up Pillow Speaker after commercial mode setup and cloning procedures are complete

Pillow Speaker Setup

Pillow Speaker Control

PILLOW	NORMAL	SWITCH
SPEAKER	SPEAKER	SWITCH
SPEAKER	SPEAKER
	PILLOW	SPEAKER
	SPEAKER

Pillow Speaker used in your system? - Connect pillow speaker and slide con-

trol switch to ‘Pillow Speaker’ to con- trol TV and hear audio on pillow speaker.

-For TV speakers sound with pillow speaker control, set switch to ‘Normal Speaker’ on connections panel.

Controlling the TV with Mechanical Switches

Pin 4 (common) is momentarily con- nected 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 sup- plied and current draw was only 2.5 mA.)

Pillow Speaker Interface

This connector furnishes three control lines and an audio output. A patient-pendant remote control, or entertainment audio and nurse call system may be connected here. All lines are isolated from the AC power line and earth ground. (Opto-isolators isolate the control lines, and a transformer isolates the audio. There are no relays or inductive components in the control lines.)

6 3

1 TV ON/OFF

2OPEN

3 CHAN UP/DATA IN

4 COMMON

5 AUDIO OUT

6 CHAN DOWN

Pin No. Purpose

SPKR.

6 3

VOLUME CONTROL

(MALE

PLUG)

TV	CHAN	CHAN
ON/OFF	DOWN	UP

1External TV On/Off switch.

2(Not used.)

3External Channel Up switch or Data in.

4Common connection for control, data, and audio output. Impedance to earth ground is a 10-meg resistor in parallel with a 1100 pf capacitor.

5Isolated audio output. Nominal 14-ohm source impedance with short circuit protection. Intended for a pillow speaker with a low-impedance pad-type volume control.

6External Channel Down switch.

P A G E 1 6

206-4071

26-3DCH-UA, 32-3DCH-UA specifications

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