Philips AD905W Users manual

IFU AD905W Author: JDR/EDN Date: 30/11/2002

Instruction For Use (IFU) for Wireless Audio set AD905W

a) Unpack all parts: transmitter, receiver/amplifier, 14V adapter, table stand b) Connect the rear speakers terminals to the appropriate connector sockets of the

receiver/amplifier.

c) Place the receiver/amplifier unit at a minimum of 30cm above ground to avoid bad

wave propagation; use the table stand as shown in the picture d) Connect receiver/amplifier to mains by use of power cord. e) Green led receiver/amplifier should light f) If led is not lighting, shift small power switch next to the connectors to the ON

position. Green led should light now. g) Place the transmitter unit at a minimum of 30cm above ground to avoid bad wave

propagation. Make sure transmitter and receiver are not closer than 2m from each

other. h) Connect the 14V power adapter to the transmitter i) Connect transmitter-inputs to DVD surround – output. Be sure to connect right input

to right output connector of DVD, idem for left channel? Mach the Blue and Grey

colour. j) Power up the transmitter. Red led of transmitter unit should light now. k) Make sure that transmitter and Receiver/amplifier are using same audio

transmitting/receiving channel. Please select same channel by use of the 4-position

switch on both units. l) Start the audio source, be sure that surround - mode is enabled. Set volume to position

5; surround sound should be audible in the rear speakers. m) Rotate antenna of both receiver/amplifier and transmitter into vertical position for

good reception n) Red led on transmitter is on for at least 4 minutes. After switching off the DVD player,

the transmitter goes automatically to standby mode after 4 minutes= red led off; when

there is an incoming audio-signal from the DVD, the transmitter starts automatically.

The transmitter is also enabled at power – up for at least 4 minutes. o) Receiver-amplifier combination is always on for at least 10 minutes = green led on.

When the transmitter stops (red led off), the receiver -amplifier will mute, green led

stays on, and after ten minutes the amplifier-receiver goes into sleep-mode = red led

on p) When distorted audio is noticed, please select different channel as the interference

could be caused by other equipment in your house using same freq. channel or even by

one of your neighbours. q) The metal table stand can be used for slightly upright position of the receiver/amplifier

unit. If used, make sure you rotate the antenna towards vertical position.

NOTE: THE MANUFACTURER IS NOT RESPONSIBLE FOR ANY RADIO OR TV INTERFERENCE CAUSED BY UNAUTHORIZED MODIFICATIONS TO THIS EQUIP MENT. SUCH MODIFICATIONS COULD VOID THE USER’S AUTHORITY TO OPERATE THE EQUIPMENT.

1. GENERAL

The Mark-3 transmitter is designed specifically for use with a TV set as a surround signal (Digital Dolby or ProLogic) transmitter towards wireless surround speakers. As such the transmitter can be connected via a cable assy. towards the TV set. Audio, supply and I²C signals can be extracted out of the TV chassis. The transmitter is designed for high quality stereo audio from 20Hz to 20kHz and has a compander to enable high S/N ratios. The basic version is intended for the European freq. band of 863-865 MHz. Derived versons are available for 433 and 914 MHz. The pilot and subcarrier frequency have been set to 23.4375 kHz and 46.875 kHz. (3th harmonic related to 15.625 kHz). This way interference whistling in TV sets with 15625 Hz is avoided. Further the translitter has improved pulling behaviour which results in additional immunity to picking up stray EM-fields from the TV hardware. The Mark-3 module needs proper I²C signals from the host controller at hex C6 to properly set the synthesiser and other functions on board of the Tx. For details on I document " I

C commands for Mark-3 Transmitter" archived under 3104 217 07110 sheet 112.

C commands to send refer to our

2. USED TECHNOLOGIES AND DIMENSIONS

The design platform is MentorGraphics with CE design rules acc. UAND1829 & UAND1833. The pb technology used is class 5 on FR4 1.6mm thickness, 2 layers Component management system : LSDB Archiving system : PALS / CORDIS Stuffing technologies : SMD in 0603/0805 size and SMD elcaps manual for some remaining components

The pb is set up as 1/6 of a 141 by 240 mm workboard . The exact dimensioning is 80mm by 62.5mm per unit. See last sheet for sketch drawing.

3. INPUTS / OUTPUTS

The connectable transmitter has to be connected to the driving set by a shielded 8 fold flatcable . Connector type at transmitter side : 8-fold jst type EH vertical

Wire function Jst on pcb , pin no

R input 1 Signal ground 2 L input 3 Supply input +12V 4 Power ground + shield wire 5 Power ground 6 SCL of I2C 7 SDA of I2C 8

Note : drain wire of shield connected to pin 5 (as wiring of MG98 cable)

Input sensitivity for max deviation (50 kHz) : 0.42 Vrms Input impedance : typ. 12 kohm Driving impedance (from TV source) : < 100 ohm

3XX000

1 0 2002-02-22

2 0 2002-03-05 3

Mark 3 Wireless Transmitter

version 0.3

Name: Felix Elsen PDSL_L 5 190 - 1 10 A4

PL Or. date 2002-01-12

3104 217 0711

2002-02-04

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