IBM AC453A User Manual

For channels requiring only one
digit, a short delay confirms that
the whole channel number has
been entered. If you don’t enter
a second digit before a certain
amount of time, the channel is
set using just the single digit. If
you select an invalid channel,
the number entered is reflected
on the display, but after a few
seconds the current channel
number is redisplayed. For two-
digit channels, no delay is
needed. Only the currently
selected channel number is
shown at the top right corner 
of the TV screen. The number
disappears after a few seconds.
The delay required for a three-
digit number is slightly greater
than for a two-digit number. 

Use the Channel button to move
up and down through the
channels. Pressing the top of the
channel button increases the
channel number and pressing
the bottom decreases it. Only
those channels available in the
currently selected broadcast
standard are displayed. For
example, for USA Broadcast the
range of channels is 2-69. At the
bottom and top of the range, the
channel number wraps around. 

Use the up and down arrows on

the keyboard. This works the
same as using the channel
button on the remote. 

The Jump button on the remote
switches between the last two
channels selected. The J key can
also be used to jump between
channels.

When the TV input is selected, the
current channel number (displayed
in the LCD panel) can also be
displayed on the top right corner of
the TV Board screen by activating
the Display key on the remote.

The power key turns off the power
to the TV Board. In order to view the
picture again, you must  turn the
power back on.

You can adjust the fine tuning in two
ways:

Use the Fine Tune button on the

remote. Pressing the top of this
button increases the frequency
and pressing the bottom
decreases it. 

Use the Control + and 

key combinations on

the keyboard in order to
increase or decrease the tuning
frequency. Use the +/- keys from
the number keypad.

To access your favorite channels
quickly, there is a Favorite button 
on the remote that behaves like the
Channel button except that it only
tunes in the favorite channels. The
Presets/Tuner

dialog box lets you

add, delete, or change favorite
channels. You can also use the ALT
key along with the +/- keys from the
number key pad to move up and
down through these channels.