Topfield TF 5510 PVR - Manual (Page 27)

3.2 Video and audio settings 21
3.2.4 Television aspect ratio
If you have a wide-screen television, set the TV Aspect Ratio
option to 16:9.
Otherwise, if you have a normal-screen television, set the TV
Aspect Ratio option to 4:3.
You cannot fully enjoy wide-screen programmes with your
normal-screen television as the above figures show. The left
figure shows a normal picture displayed in the normal screen.
To watch wide-screen programmes in the shape like the centre
figure, set the 16:9 Display Format option to Letter Box. Wide-
screen pictures then will be reduced to fit to the width of the
normal screen. Otherwise, to watch them in the shape like the
right figure, set it to Center extract. Wide-screen pictures then
will be cut out on the left and right sides equally to fit to the
width of the normal screen.
3.2.5 Sound mode
Basically, there are two audio sources as you can find two audio
sockets on the back panel of the digital receiver. You can enjoy
only one source or both of them in either stereo or mono. Set
the Sound Mode option as you desire.
Apart from this setting, you can change the sound mode with
the button. See § 5.2.4 for detailed description.
3.2.6 Radio frequency output
If you have connected your television to the RF OUT socket,
you should configure the radio frequency output. The digital