ARCHOS AV420 - Manual (Page 24)

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You can fill these in by hand. Or, if you use the My Yahoo! ® personal
calendar to set your recording scheduler, any unknown station name
will be indicated in the scheduler with a ?. You then have the
possibility to assign a channel number to the station name by clicking
on the center function button Set Channel. This avoids having to fill in
all the station names and channel numbers by hand.
7.2
Part 2: Testing the Emitter codes
1. Tune channel select: These four
parameters usually do not need to
be set. Keep the default values to
start with. See the table below for an
explanation of each.
2. Tune device code (one code
available): Some manufacturers use
only one set of codes for all of their
products. Their codes do not change
from one model to another or from one year to another. In this case,
there will only be one single code. You can now test the channel
select.
3. Tune device code (multiple codes available): Some makers of
video equipment don’t use the same set of control codes for all of
their products. They have various code sets for various models and
various years. You will have to try each of the codes to find out which
code works with your device. In the example screen, you see the
code C109. If this code does not work when doing the Test: channel
select, advance it to the next code and then test to see if that next
code works.
4. Test channel select: When you press the Test channel select button
(Highlight test channel select and press ENTER  button – on AV400),
the AV400 will send a signal through the cradle to the Infrared Emitter
stuck to your device and changes the channel. If the Number of digits
parameter is set to three, it will try to select channel 123. If that
parameter is set to 2 or 1, it will send the code for channel 12 and
channel 1 respectively.
5. Test ON/OFF: When you click on the Test On/Off button, the AV400
will send a signal to the TV Cradle, which will then send a signal out to