Philips 231T1SB/00 Service Manual page 67

ATV RF input system
Channel Coverage:
Band Analog channels, Picture Carrier (MHz)
Low Band
Mid Band
High Band
Intermediate Frequencies:
For Europe set:
System Picture (MHz )
B, G 39.875
L 39.875
L' 33.625
D, K 39.875
I 39.875
TV RF input level
10mV (80dBuV) typical, terminated with input impedance of 75Ω
Transient response: < 250 ns
Sound (5.5MHz) suppression: > 55dB.
Chroma (4.43MHz) suppression: > 25dB.
Y/C separation: > 20dB.
Tuner sensitivity≧25 dBuV, no skipping of channels & signals
DTV input system
DTV Middleware
Parental Control
Install
Zapping
Aerial or cable via RF connector supports PAL B/G, D/K, I and SECAM B/G, D/K, L/ L'.
45.25 – 154.25
161.25 – 439.25
447.25 – 858.25
Chroma (MHz)
35.445
35.445
38.055
35.445
35.445
DVB-T (EN 300 744 V1.5.1) supports MPEG-2 ISO/IEC 13818 MP@ML transport
stream up to 25Mbps (DTV Only)
MHEG5 profile 1.06 (optional for target market) (DTV only)
Respect the age stetting sent in the transmission. If the parental rating is higher
than the current setting, then the channel is blocked until a pin code is entered.
How to search through the services. Order them, and update over time: See 4.4
Let the user to step through the available services and select the required service.
Zapping also includes the actual steps for tuning to another channel. It performs
activities such as blanking audio and video, setting the right frequency, retrieving
the actual channel content from the PSI/SI tables (if a digital channel is selected). It
also enables selection of the right virtual channel to be decoded (depending on the
language setting, for example) and also unblinking of video/audio. The selector has
to dynamically react to any changes in the active transport stream – such as a
change in the rating of the currently running virtual channel from the transport
stream or even the actual disappearance of the selected virtual channel. The
underlying software therefore notifies it of any such changes. (DTV only)
Digital Channels, Center Frequency (MHz)
Sound 1 (MHz) Sound 2 (MHz)
34.375
33.375
40.125
33.375
33.875
Meridian 1
51.00-156.500
162.00- 442.00
450.00- 858.00
NICAM (MHz)
34.135 34.025
- 34.025
- 39.525
- 34.025
- 33.323
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