Suppressing Interference; Optimising The Modulator - Philips VR507 User Manual

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Suppressing interference

OPTIMIZE MODULATOR
OPTIMIZE FREQUENCY 583
MODULATOR ON
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EXITpMENU STOREpOK
Suppressing interference

Optimising the modulator

In some reception locations it is possible that a TV channel will be sent on the same or similar
frequency as the video recorder.
Result: As soon as the video recorder is switched on, the reception quality for this or several
other TV channels will decreased.
The following steps will show you how to change the pre-set 'transmission' (modulator)
frequency on the video recorder.
What is a modulator?
This electronic component in the video recorder allows the device to transmit
audio and video signals via the aerial cable. These signals can be received TV
set just like TV channels.
What is an modulator frequency?
This frequency or channel indicates the frequency or channel on which the
audio or video signal is transmitted.
1
Switch on the TV set. Select the programme number used for video
recorder playback (see TV operating instructions).
2
Press STOP/EJECT ? to eject any cassette that might be in the
device.
3
Hold the STOP h button on the remote control.
In addition press the STOP/EJECT ? button on the video
recorder until the pre-set modulator frequency e.g. 'M583' (583MHz
or UHF channel 35) appears in the display.
The video recorder will now transmit a test image on UHF channel
35/Frequency 583MHz.
4 Select line 'OPTIMIZE FREQUENCY' using P ;q or P =r . Enter
the new modulator frequency with the number buttons 0-9 .
p
Can the modulator frequency be changed automatically?
Pressing
recorder finds a 'free' channel (not used be a TV channel), the frequency of
this channel will be shown in the display.
5
Tune in the TV set to the new modulator frequency (channel 21 - 69)
shown in the video recorder display.
6
Confirm with OK .
'STORED' will appear briefly on the screen.
Optimising the modulator is now complete.
SqP
starts the automatic channel search. When the video
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