Bose AV28 Manual page 12

3.3.1.4 RF Remote Control
The RF remote control contains a similar transmitter to the one described in section 3.3.1.2. The
remote's DIP switch functions are as follows:
Switches 1-4: 4-bit House Code. All AV28 media centers are shipped set to respond to House
Code 0000 (switches 1-4 all down).
To change the House Code of an AV28 media center, do the following:
1. Turn it OFF using the ALL OFF button on the media center.
2. Press and hold the STORE button on the console.
3. While holding the STORE button, press any button on an RF remote set for the desired House
Code. When the AV28 receives this RF message, it will adopt the new House Code as its own.
Switches 5-6: 2-bit Zone Code. If switch 6 is up, the remote will control Zone 1. If switch 5 is up, the
remote will control Zone 2. If BOTH switches are up, the remote will control BOTH zones.
Switches 7-9: 3-bit Room Code. The AV28 is capable of controlling up to 7 speakers in each zone.
Each speaker has a 3-bit Room Code. Zone 1, Room A (000) is defined as the primary room (the
console buttons will also control this room), and is the Room Code set as a default on all LS28/35
bass module speakers shipped with the AV28. To control the media center's variable analog out-
puts, the RF remote control needs to be set for Room G (110).
3.3.2 Infrared Transceiver
The AV28 media center contains a built-in IR Blaster capable of sending control commands out the
black lens along the bottom front of the product to other manufacturers' A/V equipment. Similarly,
an IR receiver is built-in which allows the media center to be controlled by any IR remote control
capable of sending Bose AV28 control commands.
3.3.2.1 Infrared Blaster IC
The IR Blaster IC (U704) is an 8-bit microcontroller located on the main board, sold by UEI elec-
tronics. The IC is pre-programmed with an extensive set of IR control commands for a number of
other manufacturers' devices. Devices able to be controlled are limited to TV's, VCR's, Cable Set-
Top Boxes and Satellite Set-Top Boxes. Over one hundred manufacturers are represented, cover-
ing the U.S./North American, European, South American and Asian markets. To enable sending IR
control commands, the user must select the desired Manufacturer and Device Codes from lists in
the OSD System Setup menus.
Additionally, the AV28 is capable of "teaching" an IR learning remote the commands required to
control the media center. When the user enables the Transmit IR function in the System Setup
OSD menu, the AV28 will automatically echo all received RF remote control messages out its IR
Blaster in Bose AV28 IR format. An IR learning remote can then be taught to control the AV28 by
holding it near the front of the media center as the user presses the desired RF buttons.
Theory of Operation
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