67
Meridian 1
y
ATV RF input system Aerial or cable via RF connector supports PAL B/G, D/K, I and SECAM B/G, D/K, L/ L’.
Channel Coverage:
Intermediate Frequencies:
For Europe set:
y
TV RF input level
10mV (80dBuV) typical, terminated with input impedance of 75
Ω
¾
Transient response: < 250 ns
¾
Sound (5.5MHz) suppression: > 55dB.
¾
Chroma (4.43MHz) suppression: > 25dB.
¾
Y/C separation: > 20dB.
Tuner sensitivity
≧
25 dBuV, no skipping of channels & signals
y
DTV input system
DVB-T (EN 300 744 V1.5.1) supports MPEG-2 ISO/IEC 13818 MP@ML transport
stream up to 25Mbps (DTV Only)
y
DTV Middleware
MHEG5 profile 1.06 (optional for target market) (DTV only)
y
Parental Control
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.
y
Install
How to search through the services. Order them, and update over time: See 4.4
y
Zapping
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)
Band
Analog channels, Picture Carrier (MHz)
Digital Channels, Center Frequency (MHz)
Low Band
45.25 – 154.25
51.00-156.500
Mid Band
161.25 – 439.25
162.00- 442.00
High Band
447.25 – 858.25
450.00- 858.00
System
Picture (MHz )
Chroma (MHz)
Sound 1 (MHz)
Sound 2 (MHz)
NICAM (MHz)
B, G
39.875
35.445
34.375
34.135
34.025
L 39.875 35.445 33.375
-
34.025
L’ 33.625 38.055 40.125
-
39.525
D, K
39.875
35.445
33.375
-
34.025
I 39.875 35.445 33.875
-
33.323
