OM5721 datasheet(13/20 Pages) PHILIPS

13 / 20 page

1999 May 05

Philips Semiconductors

Product speciﬁcation

STB5660 (Set-Top Box) STB concept

OM5721

5.5

Application layer

This layer has been limited only to demonstrate the

possibilities that can be implemented at the application

layer.

5.5.1

TOP LEVEL MENU

Main menu options:

• Installation menu

• Tuning menu

• Feature demonstration menu.

5.5.2

INSTALLATION MENU

The installation menu is used to select the board

configuration options. The selected options are stored to

NVM.

Table 3

Board conﬁguration options

Note

1. With non-DiSEqC LNBs the control is simply by

14/18 V switching for polarity and in the case of a Dual

band the use of 22 kHz signal (no modulation)

selecting the High Band. With DiSEqC LNBs the

control is by sending DiSEqC commands via

modulation in the 22 kHz signal. (This means DiSEqC

level 1).

ITEM

CONFIGURATION OPTION

LNB setup

On/off DiSEqC LNB and Single or Dual

band; note 1.

Video standard PAL or NTSC; default PAL.

SCART

Pin 16 control (RGB or composite

video signalled).

Display

Allows selection of 16 : 9 or 4 : 3 TV

screen.

5.5.3

TUNING MENU

5.5.3.1

Transponder setup

The transponder can be setup automatically or manually.

Selecting the automatic option gives the user the

possibility to sweep the band over a particular frequency

range at all symbol rates. All transponders found will be

logged and stored to NVM. The sweep can be started by

pressing the start button via the user controls.

Selecting the automatic network option will give the user

the possibility to sweep the band over a particular

frequency range at a user defined symbol rate.

The Network Information Table (NIT) from the first

transponder found will be read and the services known in

this NIT will be logged and stored to NVM.

Table 4

Program setup

Selecting the manual option provides the user with the

ability to enter additional transponder data, or to adjust

transponders found with an auto setup. To add a

transponder the correct frequency, symbol rate,

polarisation and Forward Error Correction (FEC) rate are

required.

ITEM

OPERATION

Source

The source of the transport stream can be

selected between tuner and stream server.

In Tuner mode the ability to change the

selected transponder is available.

Listing

Shows the current transport stream and the

possible audio PIDS for the selected service.

The service can be selected and the audio

PID chosen.

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