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Basic Operation

19

Once the input and speaker connections
have been made, and the system has been
configured, the unit is ready for
operation. Note that some controls are
duplicated on both the front panel and
the remote control, while others appear
on one or the other, but not both.

To turn the unit on, press either the

button on the front panel 

^

or

b

on the remote.

When power is turned on, the amplifier
will return to the input source in use
when the unit was last turned on. The
front panel display will also illuminate to
provide status indicators of the unit’s
operation.

Source Selection
To select or change the input source,
press one of the 

buttons on the

front panel 

345678

or one of the

Source buttons on the remote 

c

. 

To listen to one source while you watch
another, first select the video source (

,

, 

, 

or 

), and then

select the desired audio source (

, 

, 

). 

The audio source will be displayed on the
Information Display, while the video
source will be displayed in the upper left
corner of the Fluorescent Display next to
the word 

VISUAL

¡

.

Volume Control
The AVI250’s volume is controlled using
either the front panel knob 

%

or the

buttons 

f

on the

remote. 

NOTE: Unlike conventional
mechanically driven volume controls,
this amplifier’s volume is set using digital
devices. This means that the volume
knob has no firm stopping point at either
end of its rotation. Depending on the
speed with which the knob is turned, it is
normal for as many as three complete
rotations to be required for full travel
from the loudest setting to the softest. 

When the volume is adjusted, the word

Master

will appear in the main

portion of the Information Display,
followed by a two digit number. The
number indicates the variation from the
reference point established when the
output levels are set. 

Surround Mode Selection
One of the most important features of 
the AVI250 is its ability to reproduce a
full multichannel surround soundfield
from both surround encoded programs,
and standard stereo programs. In
addition, this is one of the few products
available that is equipped for Home THX,
the ultimate in home theater. In all a
total of eight listening modes are
available on the AVI250.

Selection of a surround mode is based on
personal taste, as well as the type of
program source material being used. For
example, motion pictures bearing the
logo of one of the major surround
encoding processes, such as Dolby
Surround, SDDS, DTS Stereo or
UltraStereo may be played in either the
THX Cinema, Dolby Pro Logic or Movie
Surround Modes. TV or radio broadcasts
of programs in surround, but not
originally produced as theatrical motion
pictures should be played back in the
Dolby Pro Logic or Movie Surround
modes. Other mode selections are
described elsewhere in this manual.

NOTE: Once a program has been
encoded with surround information, it
retains the surround matrix as long as
the program is broadcast in stereo. Thus,
movies with surround sound will carry
surround information when they are
broadcast via conventional TV stations,
cable, pay TV and satellite transmission.
In addition, a growing number of made
for television programs, sports broadcasts,
radio dramas and music CDs are also
recorded in surround sound. You may
obtain a list of these programs and discs
from Dolby Laboratories Licensing Corp.,
Woothon Bassett, Wiltshire, SN4 8QJ,
England.

Surround modes may be selected in one
of three ways.

Engelsk manual AVI250  11/01/98 8:53  Side 19

Basic Operation

20

From the front panel, use the 

⁄

or 

¤

buttons 

#

to scroll through

the list of modes. The selected mode will
appear in large letters in the front panel
display, and in a two line reminder on
the video screen. Once the selection is
made, the mode will continue to appear
in a smaller indicator at the bottom of
the front panel display.

From the remote, modes may be selected
by simply pressing the button that
corresponds to the desired mode. 

e

Modes may also be selected using the on
screen display. Press 

r

on

the remote to display the 

MAIN MENU

.

Then press 

¤

q

twice so that the on

screen cursor is next to 

SURROUND

MODE

. Press 

r

again to

move to the next menu.

At the 

SURROUND MODE MENU

,

press the 

‹

or 

›

buttons 

r

until the

desired mode name appears on the
screen. Press 

¤

twice until the 

>

cursor

is next to 

and press 

. At the main menu

select 

MENU OFF

and press 

to exit the menus.

A different mode may be selected for
audio and video sources. Once a mode
has been selected, it will be attached to
those sources in memory. Thus, you may
select 

THX CINEMA

as the mode for

video and 

HALL SURROUND

for

audio. After the initial selections are
made, the unit will automatically return
to your preferred mode for each type of
input whenever it is chosen.

TV Auto Function
With the increasing sophistication of
today’s home entertainment systems, it
often takes numerous remote controls to
turn a system on. This product’s unique
“TV Auto” feature simplifies that task and
greatly reduces the actions needed to
bring your entire system to life.

If a video feed is connected to the TV
VIDEO IN jacks 

N

during the

installation, the signal at that jack is used
to trigger system turn on. Even when the
unit is turned off, the presence of a video
signal at the TV VIDEO jacks will
automatically cause it to turn on. As long
as the signal is present, the unit will
remain on. When the TV or other source
is turned off, it will automatically return
to a standby (“off”) mode within five
minutes.

Note that if the unit is turned on
automatically by this function, it will
remain on if another source is
subsequently selected. In that case, it
must be turned off manually even if the
TV source is turned off.

Engelsk manual AVI250  11/01/98 8:53  Side 20

On Screen Display

21

On Screen Menus

In addition to the information shown 
on the front panel display, it is also 
possible to obtain the unit’s current 
status through the use of on screen 
video messages. The on screen menus
may also be used to control many aspects
of the product and to make adjustments
and selections.

To activate the On Screen display system,
press and hold the 

s

button on the remote for three

seconds. This will cause a status
summary display to be shown on the
screen for ten seconds. (Figure #5). Once
the video displays are enabled, this status
screen will also appear when the unit is
turned on.

NOTE: In order to view the on screen
menu displays the unit must be
connected to the standard, composite
video input of a TV monitor or projector.
The on screen displays are NOT visible via
the “S” video output.

The status screen displays the following
information:

AUDIO SOURCE

: This is the input

currently selected for audio.

VIDEO SOURCE

: This is the input

currently selected for video.

TAPE1 OUT

: This is the source

currently routed to the Tape 1 audio
output for recording.

VCR1 OUT

: This is the source

currently routed to the VCR 1 video
output for recording.

MODE

: This is the currently selected

audio/surround mode.

MULTIROOM

: This is the source

currently selected for listening in
remote room locations.

MASTER VOLUME

: This is the

current volume level. Note that
volume appears as a horizontal scale.
The “0dB” reference level is indicated
by a solid block 

Í

, while volume

levels above or below the reference are
indicated by double vertical bars 

±

.

Function Displays and Messages
Once the On Screen Displays have been
activated, they appear when certain
functions are performed from the front
panel buttons or the remote control.
These messages are three line displays
with the current function shown on the
top line and information about the
selection or choice on the bottom two
lines. 

The following function/operation display
screens are available:

Surround Mode and Delay
When the surround mode is changed or
the delay timing is adjusted, this message
will appear at the bottom of the video
screen. The top line is the surround
mode, the bottom line is the delay time
for that mode. (Figure #6) Note that
delay time will not be displayed in the

MONAURAL

, 

STEREO

or 

DOLBY 3

STEREO

modes, as these modes do not

have rear channel information.

A U D I O   S O U R C E   :   T U N E R

V I D E O   S O U R C E   :   V C R 2

T A P E 1   O U T         :   C D

V C R 1     O U T         :   A U X

M O D E           :   D O L B Y

                      P R O   L O G I C

M U L T I   R O O M : T U N E R

        M A S T E R   V O L U M E

٠٠٠٠٠٠٠٠٠٠٠٠٠٠٠|| Ð Ð

M O D E               : T H X

                        C I N E M A

D E L A Y     T I M E : 2 0 m s e c

    < C O P Y   F U N C T I O N >

      T A P E   O U T : T U N E R

      V C R 1   O U T : V C R 2

  < F U N C T I O N   S E L E C T >

        A U D I O : T U N E R

        V I D E O : V C R 1

F R O N T     L       :   + 1     d B

F R O N T     R       :   Ð 2     d B

C E N T E R           :   + 5     d B

S U R R O U N D   L   :   Ð 1 0   d B

S U R R O U N D   R   :   + 3     d B

S U B   W O O F E R   :     0     d B

Engelsk manual AVI250  11/01/98 8:53  Side 21

On Screen Display

22

Input Selection
When the source input is changed, this
message will appear (Figure #7). The top
line is the audio input source, the bottom
line is the video input source. Remember,
when choosing an input, select the video
source first, and then the audio source if
a split input/simulcast listening session is
desired. Note that when the 

function is engaged, the

A U D I O

source is displayed in reverse

video.

Tape Copy Input Selection
When an input is selected for either

TAPE1

or 

VCR1

copy, the choices

appear as a message with the TAPE1
information on the top line and the VCR1
information on the bottom line. (Figure
#8)

Surround Output Levels
To obtain a status screen with the outputs
for each individual channel, press the

button 

v

on the remote. A

summary will appear for ten seconds.
(Figure #9)

Master Volume
When the volume is changed, a
horizontal scale will briefly appear at the
bottom of the screen with the volume
level. (Figure #10)

Mute
When the unit is placed in audio mute,
the word 

MUTE

will appear in the 

upper right corner of the screen as a
reminder that the volume has been cut.
(Figure #11)

On Screen Display Function
If you do not wish to have the on screen
displays appear, press and hold the

button 

s

on the

remote for three seconds. A reminder
message will appear on the screen for a
few seconds (Figure #12), and the
displays will then be canceled until they
are once again activated. 

NOTE: Additional display messages
appear as a part of the Multiroom system.
These are described in the portion 
of this manual dealing with that topic.

Using The On Screen Menus 
for System Control
Besides conveying status messages, the on
screen display system may also be used as
a means of controlling the operation of
the unit. To operate the control system,
always start by pressing 

r

on

the remote to bring up the Main Menu.
(Figure #1). Then, use the up/down
navigational arrow keys 

⁄

and 

¤

q

to move the cursor. Press 

r

to choose a menu, and then use the
left/right navigational arrow keys 

‹

and

› q

to view the choices in that current

option. Finally, when the desired choice
appears, press 

r

to enter the

choice and return to the 

MAIN MENU

.

To exit from the Menu Control System,
press 

¤

q

until the on screen 

>

cursor

is pointing to 

MENU OFF

and press

r

.

        M A S T E R   V O L U M E

٠٠٠٠٠٠٠٠٠٠٠٠٠٠٠|| Ð Ð

                              M U T E

O N   S C R E E N   D I S P L A Y

РO F F Ð

    > T A P E   * T U N E R *

      V C R 1   * L D *

R E T U R N   T O   M A I N   M E N U

R E C   O U T   S E L E C T O R

  > A U D I O   * L D *

    V I D E O   * L D *

    T A P E   M O N I T O R     O N

O F F

R E T U R N   T O   M A I N   M E N U

I N P U T   S E L E C T O R

Engelsk manual AVI250  11/01/98 8:53  Side 22