Art System AST-50 User manual

AST–50 KARAOKE SYSTEM
Owner’s manual

AST-50 Karaoke System. Owner’s manual
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Table of contents
1. Precautionary measures................................................................................................................................................................................................3
1.1. During installation .................................................................................................................................................................................................3
1.2. During exploitation ...............................................................................................................................................................................................3
1.3. During prophylaxis and cleaning .....................................................................................................................................................................4
2. Getting to know the device .........................................................................................................................................................................................5
2.1. Functional capabilities..........................................................................................................................................................................................5
2.2. Package content.....................................................................................................................................................................................................5
2.3. Front panel................................................................................................................................................................................................................5
2.4. Rear panel..................................................................................................................................................................................................................6
2.5. Remote control panel ..........................................................................................................................................................................................7
3. Initialising and connection............................................................................................................................................................................................8
3.1. Connection to home theatre ............................................................................................................................................................................8
3.2. Connection of background video external source...................................................................................................................................8
3.3. Installation of electronic certificate...............................................................................................................................................................9
4. Functional capabilities................................................................................................................................................................................................. 10
4.1. «Karaoke» function.............................................................................................................................................................................................10
4.1.1. Playback of songs......................................................................................................................................................................................10
4.1.2. Songs reservation......................................................................................................................................................................................10
Song reservation..............................................................................................................................................................................................10
Songs playback from the list of reserved songs................................................................................................................................. 11
Cancellation of reservation «on-the-fly» ............................................................................................................................................... 11
Review and editing of the list of reserved songs .............................................................................................................................. 11
4.1.3. Songs search................................................................................................................................................................................................ 11
Beginning of search........................................................................................................................................................................................11
Search results.................................................................................................................................................................................................... 11
Work with search results.............................................................................................................................................................................. 11
4.1.4. Additional capabilities.............................................................................................................................................................................11
Recording of song execution..................................................................................................................................................................... 11
Switching of source of background video............................................................................................................................................ 12
Selection of playback mode........................................................................................................................................................................ 12
New songs .......................................................................................................................................................................................................... 12
My songs.............................................................................................................................................................................................................. 12
Playback of tracks from USB drive........................................................................................................................................................... 13
Favorites..............................................................................................................................................................................................................13
TOP 100...............................................................................................................................................................................................................13
Applause.............................................................................................................................................................................................................. 13
4.2. Function «Media player» .................................................................................................................................................................................. 14
4.2.1. Playback of video tracks (tab «Video»)............................................................................................................................................. 14
4.2.2. Playback of audio tracks (tab «Music»)............................................................................................................................................. 14
4.2.3. Viewing images (tab «Slideshow»)..................................................................................................................................................... 14
4.3. Function «Setup»................................................................................................................................................................................................. 14
4.3.1. Main setup menu....................................................................................................................................................................................... 15
User ....................................................................................................................................................................................................................... 15
Administrator.................................................................................................................................................................................................... 15
Service .................................................................................................................................................................................................................. 15
Information ........................................................................................................................................................................................................ 15
Additional updates ......................................................................................................................................................................................... 15
4.3.2. Menu option «User»................................................................................................................................................................................. 15
Karaoke................................................................................................................................................................................................................15
Background video ........................................................................................................................................................................................... 16
Background audio ........................................................................................................................................................................................... 16
Settings by default..........................................................................................................................................................................................17
4.3.3. Menu option «Administrator».............................................................................................................................................................. 17
General Settings............................................................................................................................................................................................... 17
Microphone Processing ................................................................................................................................................................................ 17
MIDI ....................................................................................................................................................................................................................... 17
Video..................................................................................................................................................................................................................... 17
Network / Local area network (LAN)....................................................................................................................................................... 17
Network / Wireless network (Wi-Fi)......................................................................................................................................................... 18
Security ................................................................................................................................................................................................................ 18
Settings by default..........................................................................................................................................................................................18
5. AST Manager, the program to control the device using tablet PC.......................................................................................................... 19
6. Installation of updates (firmware)......................................................................................................................................................................... 20
7. Troubleshooting............................................................................................................................................................................................................ 21

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1. Precautionary measures
1.1. During installation
 For connection of AST-50 to electricity mains use only input power with the voltage 220 V and
alternative current frequency 50 Hz.
 Install AST-50 at sufficient distance from walls and other objects. Special attention to be in respect
of distance between the device and wall which must be not less than 10 centimeters. Breach of
this rule may cause overheating of the device and possible flaming.
 Do not install AST-50 in places with strong vibration, on surfaces with incline, on unsteady, high
surfaces, in dusty and/or insufficiently ventilated places.
 Do not install AST-50 in places with high humidity, do not put on AST-50 vases, glasses and other
objects with liquids.
 Do not install AST-50 close to electric heaters, radiators and other sources of heat, in places with
strong and/or frequent changes of temperature, in places with intensive solar heating. It may
cause device overhearing and its breakage.
 During connection of AST-50 to external equipment carefully read manual for its use. Before
connection turn off AST-50 and disconnect power cord from electric circuit.
 During transfer of AST-50 from outside to warm room at cold season in order to prevent
appearance of condensate, it is necessary to leave the device at room temperature for 1 – 2 hours
and only after that you may connect the device to electric circuit.
 Do not connect power cord to electric circuit before completion of final installation of AST-50.
 Do not connect AST-50 to one power board simultaneously with other devices consuming big
power. Check that the total consuming power of connected to power board devices do not
exceed 2000W.
 Do not put power cord close to electric heaters and other sources of heat. Do not put on power
cord any heavy objects. It may cause damage to power cord and injury by electric current.
1.2. During exploitation
 Avoid penetration of water and other liquids to surface and inside AST-50. Do not put objects with
liquids on device surface.
 Do not put in AST-50 foreign objects and do not leave them on device surface.
 Do not touch device and power cord by moist hands. Do not touch power cord during
thunderstorm.
 Do not deform, twist and heat power cord. In case of damage to power cord replace it
immediately.
 During disconnection of power cord from от electric circuit do not pull power cord, hold the plug.
 Do not cover ventilating holes and louvers on top and on each side of AST-50 housing. Do not
exploit device in poor ventilated places.
 Do not put on AST-50 heavy objects, do not step on and do not hang up the device.
 During movement of AST-50 to another place disconnect from the device connected units,
disconnect power cord from electric circuit. Do not carry the device to another place with foreign
objects on it.
 If you do not use AST-50 during long time disconnect power cord from electric circuit.
 In case of fall the device or damage to device housing switch off AST-50, disconnect connected
units, disconnect power cord from electric circuit.
 Do not push buttons hard.
 In case of strange sound or smell of smoke immediately disconnect power cord from electric
circuit, using thick gloves or dry cloth.

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 Do not dismantle and do not repair device independently. Repair to be arranged in authorized
maintenance shop.
1.3. During prophylaxis and cleaning
 Before cleaning of AST-50 turn off power, disconnect power cord from electric circuit.
 Use for cleaning of the AST-50 surfaces only special detergents for electronics. Do not use organic
compounds (gasoline, turpentine, etc.).
 It is recommended not less than once an year to make prophylaxis of the device in authorized
maintenance shop.

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2. Getting to know the device
2.1. Functional capabilities
The device AST-50 is designed for:
 playback of karaoke sound tracks and audio files. Supported audio formats: MP3, WAV, MIDI;
 video playback in format HD-Ready (720p), MPEG2, MPEG4, h.264, AVC, DivX, xvid.
2.2. Package content
Supply package of AST-50 is as follows:
 device AST-50;
 remote control panel;
 batteries for remote control panel (type АА, 2 pieces);
 songs list sorted out by name (title) of singer;
 USB storage with electronic certificate and this manual;
 composite audio/video cable, 3 m;
 HDMI cable, 1,8 m;
 unit package (box, seal, plastic case).
2.3. Front panel
Lay out of control elements and sight control on front panel of the device AST-50:
Figure 1
1. Button for turning on/off the device.
2. LED indicator of the device work.
3. Button for mode selection.
4. Button for levels control.
5. Information display of the device.
6. USB port.

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2.4. Rear panel
Lay out of ports on rear panel of the device AST-50:
Figure 2
1. Holder for installation of hard disk.
2. Port for connection to local area network.
3. HDMI port.
4. USB port.
5. Port for connection of external video source.
6. Port for connection of acoustic system.
7. RS-232 port.
8. Level control devices for microphone ports.
9. Component video output.
10. Composite video output.
11. Port for connection of microphones.

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2.5. Remote control panel
Figure 3
1. Button box for control of audio track playback.
2. Button box of digit keys.
3. Button for playback start / confirm the action.
4. Button for playback stop / cancel the action.
5. Button for playback of applause record.
6. Button box for playback queueing (reservation).
7. Button for songs searching mode.
8. Button box of coloured function pushbuttons.
9. Button for turning on/off the device.
10. Button box for control of additional functions «Karaoke».
11. Button box for control of «Media Player» functions.
12. Button box for switching the device functions.
13. Button box of navigation buttons.
14. Extended keyboard.

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3. Initialising and connection
 Before connection of AST-50 with other devices make sure that power of the device and
pluggable equipment switched off.
 Do not cover ventilating holes of AST-50 and pluggable equipment for natural air circulation.
 Before connection of AST-50 with other devices read carefully manuals for pluggable equipment.
 During connection of audio and video cables make sure that shape, size and color of plug
correspond to shape, size and color of connector.
3.1. Connection to home theatre
Approximate scheme of AST-50 connection to home theatre system.
Figure 4
3.2. Connection of background video external source
External source of background video (DVD player, satellite TV receiver) to be connected through
composite input VIDEO IN (BGV) ([5] on Figure 2). Supported devices are with video formats PAL or NTSC.

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3.3. Installation of electronic certificate
Installation of certificate to be done after connection of peripheral equipment (display or TV set) to
AST-50.
For installation of certificate the following actions to be done:
1. Turn on the device, wait for its download finish, insert included in delivery USB drive with the
certificate to USB port on the front panel of device.
2. On display (TV set) screen connected to the device will appear information message with offer to
install the new certificate. For installation press green button «Yes», to cancel installation press
red button «No» (button box of colored function pushbuttons [8] on Figure 3).
3. Certificate updating procedure will take a few seconds. Upon completion of updating procedure
in the upper right corner for a few seconds will appear the message «Certificate installed».
4. Remove USB drive from USB port. The device is ready to work.
Installation will not start in case that certificate with the same or later creation time than on USB drive
is already installed in the device.

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4. Functional capabilities
4.1. «Karaoke» function
Just after switching-on and during periods of time between songs playback the device is in standby
mode. In standby mode AST-50 produces background video to the screen of connected display or TV set and
background audio track to connected to the device acoustic system in case that in the device set up switched
on playback of background video (per default switched on) and audio. In case that playback of background
video is switched off to the screen of display transfers «black screen».
In order to enter karaoke function press button «Karaoke» on remote control (button box [12] on
Figure 3).
4.1.1. Playback of songs
In standby mode enter song number using button box of digit keys on remote control (button box [2]
on Figure 3). Entered number displays in upper left corner of connected to the device display or TV set and
also on data display of the device ([5] on Figure 1). On completing of entering on display screen will be short
summary of information about the song with entered number including track name and singer and also
parameters of track sound: type, melody, tone, tempo, and availability of backing vocal. At this moment
possible to make correction to some parameters of track sound: volume level of melody (only for MIDI
format), tone and tempo playback change using special buttons on remote control (button box [1] on Figure
3). Changing of these parameters is also possible «on-the-fly» during track playback. To put song to the list of
chosen songs press «blue» button on remote control (button box of coloured function pushbuttons [8] on
Figure 3).
In case of entering number of nonexistent song will appear information message «TRACK NOT
EXISTS».
To start song playback press button «START» on remote control ([3] on Figure 3). Press this button
during song playback to pause playback («pause») and second pressure will resume playback («pause
removal»). Press of this button in standby will start repeated playback of the last played song.
During song playback on information display of the device ([5] on Figure 1) displays countdown of the
total time of song’s playback.
To cancel song playback press button «STOP» on remote control ([4] on Figure 4). Press of this button
during song playback will stop playback.
4.1.2. Songs reservation
Reservation (postponed playback) is necessary for alternate songs playback. For songs reservation and
control the list of reserved songs is designed button box [6] on remote control (Figure 3).
Song reservation
In standby mode enter song number using in the same way as during usual playback. After completion
of entering number during displaying of referral information it is possible to change parameters of track
sound (for more details, see para. 4.1.1). Changing parameters will take effect during playback of reserved
song. Press button «Reserve» on remote control. It is also possible to put track to waiting list for playback
using button «RESERVE» on the front panel of the device. To put song involuntarily to the beginning of
reserve list («at the head of the queue») press button «Priority reserve» on remote control. After entering
song to reserve in the upper right corner of display will appear lettering «Reserve» with songs numbers lead
in reserve list and total quantity of reserved songs.

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Songs playback from the list of reserved songs
To start songs playback from waiting list press button «START» on remote control ([3] on Figure 3).
After the end of playback of current song automatically starts playback of song located first in the list. To
cancel automatic playback use the function «Settings» (for more details, see para. 4.3).
Cancellation of reservation «on-the-fly»
Enter song number the same as during usual playback. After the end of entering number press button
«Reserve cancellation» on remote control (button box [6] on Figure 3). In case that one song with the same
number reserved a few times will be cancelled playback of the first song in reserve list. To cancel later
reservations use the reserve list (see below).
Review and editing of the list of reserved songs
Open reserve list using button «Reserve list» on remote control (button box [6] on Figure 3). For
navigation between list lines use arrows on remote control (button box [13] on Figure 3). In order to make
actions with the active line (highlights by color) use colored functional buttons on remote control (button
box [8] on Figure 3). Actions corresponding to pressing each functional buttons are shown in prompt
situated in the bottom of reserve list.
In review/editing mode of reserve list it is possible to change parameters of tracks playback (for more
details, see para. 4.1.1).
In order to exit the mode of reserve list review press button «STOP» on remote control ([4] on Figure
3).
4.1.3. Songs search
Beginning of search
For song search press button «Search» on remote control ([7] on Figure 3) or start to enter search text
using extended keyboard on remote control ([14] on Figure 3). Entered text will appear in search box
situated in the upper part of display. Using button box of colored function pushbuttons on remote control
(button box of colored function pushbuttons [8] on Figure 3) set area of search (in name, text of song, etc.),
input language, choose desired track format and song genre. Search results will appear automatically after
entering the third symbol.
Search results
Search results display in the form of list with the following positions: song name, name/title of singer,
song number, and track format. Maximum number of lines in the list – 1000. If the list with search results
contains maximum number of lines and necessary song is not in the list try to specify search parameters. For
example, limit area of search, enter more precise text line for search, etc. If no one song is found according
to these parameters during the search the list will be empty.
Work with search results
For navigation between lines of the list with search results use arrows on remote control (button box
[13] on Figure 3). Song in active line (highlights by color) may be put in reserve list, it is possible to immediate
start song playback, to change parameters of track playback (for more details, see para. 4.1.1). Changes
count towards during immediate song playback or during playback of track from reserve list in case that
song is in reserve.
In order to exit search mode press button «STOP» on remote control ([4] on Figure 3).
4.1.4. Additional capabilities
Recording of song execution
AST-50 may record and playback recordings of song execution. The device memory keeps up to 50 last
recordings of song execution, more old recordings delete automatically. Recording of song execution saves

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in case that the following two conditions will be executed: 1. soundtrack to be played until the end and 2.
sound of the voice to be transmitted to the microphone input. To see the list of presented recordings,
playback, copying of recordings to external storage, switching on or off the function of recording of song
execution press the button «Record» on remote control (Figure. 3). For navigation in the list of recordings
use buttons with arrows (button box [13] on Figure. 3). To perform the actions related to recordings of song
execution use the button box of function pushbuttons (button box of colored function pushbuttons [8] on
Figure. 3).
Switching of source of background video
If external source of background video connected to AST-50 (for more details, see para. 3.2) it is possible
using button «BGV» on remote control (button box [10] on Figure 3) to switch between external sources and
record of background video on hard disk of the device.
Selection of playback mode
AST-50 may automatically play all songs recorded on hard disk of the device. Apart from normal
playback mode (for more details, see para. 4.1.1) there are two modes of automatic playback: serial mode
and random playback. Selection of the necessary playback mode to be done by serial push of button
«Playback mode» on remote control (button box [10] on Figure 3). Current mode displays in information
message in upper right corner of display. In serial mode and random playback information message displays
constantly, in normal mode this message will disappear after a few time.
To start playback in selected automatic playback press button «START» on remote control ([3] on
Figure 3), to stop playback press button «STOP» on remote control ([4] on Figure 3).
New songs
During exploitation repertoire may be widen using downloading and installation of updates. In order
to see songs lists containing in update press button «New songs» (button box [10] on Figure 3) on remote
control. Information about work with lists and possible actions see in para. 4.1.3, section «Work with search
results». For navigation between updates use buttons «<» (left) and «>» (right) (button box [13] on Figure 3).
My songs
В In this model of karaoke system it is possible to add to repertoire up to one hundred tracks not
included in the main songs catalogue. To see the list of earlier downloaded tracks press button «My songs»
(button box [9] on Figure 3) on remote control.
For navigation between lines of the list use arrows on remote control (button box [12] on Figure 3).
With the song in active line (highlights by colour) it is possible to make the following actions:
 to start playback (button «START»);
 to put in reserve list (buttons «Reserve» or «Priority reserve»);
 to enter or edit song name and name (title) of singer (yellow button in button box of colored
function pushbuttons [7] on Figure 3);
 to delete song from the system (red button in button box of colored function pushbuttons [7] on
Figure 3).
To download new track make the following actions:
1. Record track and (in case of using CD+G format) supporting image file to root directory of USB
drive.
2. Connect USB drive to USB port on the front panel of karaoke system.
3. Press button «USB drive» (blue button in button box of colored function pushbuttons [7] on Figure
3).
4. Locate cursor on the name of necessary file, press button «Add to my songs» (green button in
button box of colored function pushbuttons [7] on Figure 3). Will start copying of the necessary
files.

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5. Wait for the end of copying procedure. For backspacing to the list «My songs» press button
«Return to my songs» (blue button in button box of colored function pushbuttons [7] on Figure 3).
To every downloaded track automatically assigns a number within the limits from 11000 to 11099.
This number afterwards may be used to start track playback (for more details, see para. 4.1.1).
Playback of tracks from USB drive
In case that on the connected to USB port of karaoke system USB drive available files with supported
format of musical tracks, then each of these tracks will receive internal number within the limits from 11500
to 11599. This number may be used to start track playback (for more details, see para. 4.1.1) for as long as
USB drive will be disconnected from USB port of the system.
To see the list of tracks available for playback and also definition of current number of one or another
track press button «My songs» (button box [9] on Figure 3) and after that button «USB drive» (blue button in
button box of colored function pushbuttons [7] on Figure 3).
Favorites
To display the list of favorites (songs) press button «Favorites» on remote control (button box [10] on
Figure 3). Information about work with lists and possible actions see in para. 4.1.3, section «Work with search
results».
TOP 100
Pressing on button «TOP 100» on remote control (button box [10] on Figure 3) will display on display
screen list of the most frequently playing songs by the device. The most frequently playing songs are
situated at the top of list.
Applause
During pressing the button «Applause» on remote control ([5] on Figure 3) AST-50 will play recording
of the sound of applause. Sound of applause do not interrupt song playback, it plays simultaneously with
track playback (overlap). Applause also may be started in standby mode. The next pressings during applause
record playback ignores.

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4.2. Function «Media player»
Function «Media player» allows to playback video tracks, audio tracks and to view image files in
«slideshow» mode from external USB drive connected to USB port of the device. To switch to «Media player»
mode press button «Media» on remote control (button box [12] on Figure 3).
For navigation between tabs «Video», «Music» and «Slideshow» use navigating buttons on remote
control (button box [13] on Figure 3).
4.2.1. Playback of video tracks (tab «Video»)
Supported formats of video files: AVI, MKV, MP4.
Insert USB drive to USB port of the device ([6] on Figure 1). For navigation between file catalogs and
files, presented on USB drive use navigating buttons on remote control (button box [13] on Figure 3).
Choose video file to see and press button «OK» to start playback.
Playback control to be done by navigating buttons on remote control (button box [13] on remote
control). Buttons with arrows right/left «rewind» video to 30 seconds forward and backward
correspondingly. Buttons with arrows up/down «rewind» video approximately to 2% of the total length of
film. Button «OK» turns on pause and resumes playback.
4.2.2. Playback of audio tracks (tab «Music»)
Supported formats of audio files: MP3, WAV.
Insert USB drive to USB port of the device ([6] on Figure 1). For navigation between file catalogs and
files presented on USB drive use navigating buttons on remote control (button box [13] on Figure 3). Choose
audio file to listen and press button «OK» to start playback. Playback of the next audio file in current file
catalog on USB drive starts automatically.
Playback control to be done by navigating buttons on remote control (button box [13] on remote
control). Buttons with arrows right/left «rewind» audio track to 30 seconds forward and backward
correspondingly. Buttons with arrows up/down «rewind» audio track approximately to 2% of its total length.
Button «OK» turns on pause and resumes playback.
Playback control to be done by navigating buttons on remote control (button box [11] on remote
control). Buttons >>| and |<< start playback of the next or previous audio track correspondingly.
4.2.3. Viewing images (tab «Slideshow»)
Supported formats of image files: JPG.
Insert USB drive to USB port of the device ([6] on Figure 1). For navigation between file catalogs and
files presented on USB drive use navigating buttons on remote control (button box [12] on Figure 3). Choose
image to view and press button «ОК» to start slideshow. Images automatically change every 15 seconds.
Playback control to be done by navigating buttons on remote control (button box [11] on remote
control). Buttons >>| and |<< start playback of the next or previous image correspondingly. Button >||
suspends («pause») or resumes automatic image changing.
4.3. Function «Setup»
To enter setup menu press button «Setup» on remote control (button box [12] on Figure 3).
All actions in «Setup» mode to be done with remote control (Figure 3). For navigation between setup
menu options use buttons with arrows (button box [13] on Figure 3). To enter the necessary setup menu
option use button «OK» (button box [13] on Figure 3) or «START» ([3] on Figure 3), to go to previous menu
option use button «STOP» ([4] on Figure 3).

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For navigation between setup menu options use buttons with arrows up/down, for changing settings
use buttons with arrows right/left (button box [13] on Figure 3). If necessary, use extended keyboard
(button box [14] on Figure 3) or buttons with figures (button box [2] on Figure 3).
4.3.1. Main setup menu
User
In this menu section presented global configuration influenced over the work of karaoke system in
«Karaoke» mode.
Administrator
There are extended setup options of the device in this menu section. This menu section is protected
by password. To enter the section type the password «1234». Password request will be one time after every
restart of karaoke system.
Service
This menu section designed only for employees of specialized maintenance shops.
Information
Summary information about karaoke system’s main data.
Serial number. Serial number of the device. Also available on rear panel of AST-50 (Figure 2).
Sale date / Warranty. Date of sale and warranty period AST-50.
Firmware Version. Current number of firmware version installed to AST-50.
Network. Assigned to AST-50 IP address in local area network (by default 192.168.1.101), connection
method (wired or wireless), MAC address of net adapter.
Songs Played. Statistical information about quantity of songs played by the device.
Last Certified Month. Month and year of the last certified repertoire update. May mismatch with
month and year of the last installed to the device repertoire update. For more details about installation of
electronic certificate see para. 3.3.
Last Update Month. Month and year of the last installed to the device repertoire update. May
mismatch with month and year of the last installed to the device repertoire update.
Additional updates
Displaying of additional updates list using national languages installed to karaoke system.
4.3.2. Menu option «User»
Karaoke
Countdown. Switching on/off the countdown. Countdown warns about beginning of painting over
text among other after long solo.
Color Theme. Selection of karaoke system user interface color scheme and painting over song’s text.
Reserve Playback Delay. Selection of pause duration before start of playback the next song from list
of reserved songs. For more details about reservation, see para. 4.1.2.
Lyrics Rows Count. Adjustment of quantity of simultaneously displayed on the screen lines of playing
song. Four lines take more space on the screen, but simplify vision of text.
Rows Alignment. Selection of version of song text lines adjustment in horizontal direction.
Lyrics Text Placement. Selection of version of song text lines adjustment in vertical direction.
Lyrics Text Underlay. Selection of translucent song text platter intensity. The more saturated (dark)
platter, the better text readability. At the same time dark platter overrides background video.
Extended Song Information. Switching on/off detailed information about song in standby mode,
before its playback.
Mic Scoring. Switching on/off scoring function for allowing the mark for song execution.

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Background video
In this menu section it is possible to see the list of downloaded to hard drive video files for
background video playback, activate or switch off necessary video file, to download new video files to hard
drive of the device (up to 10 video files).
Clip Binding. Switching on/off songs accompaniment by original singer’s music video as background
video.
Uploading of video files to be done as follows:
1. Download to USB drive one or a few video files in formats AVI, MKV or MPEG.
2. Insert USB drive to USB port ([6] on Figure 1 or [4] on Figure 2).
3. Locate cursor on one of free cells in the list of video files. If cursor locates on occupied cell video
file presented on hard drive of the device will be replaced by the new one.
4. Press yellow button «Add/change» (button box of colored function pushbuttons [8] on Figure 3).
Will display dialog box «Add file» with the list of connected to the device USB drives.
5. Locate cursor on line with name of necessary USB drive and press «OK» (button box [13] on Figure
3) for displaying of the list of files available for copying.
6. Locate cursor on line with file for copying and confirm option by pressing yellow button «Add file»
(button box of colored function pushbuttons [8] on Figure 3). Will start copying of video file to
hard drive of the device.
IMPORTANT: do not disconnect USB drive from USB port
before the end of copying process.
On completion of copying the name of downloaded video file will appear in the list of downloaded to
hard drive of the device video files.
In order to delete unnecessary video file set cursor on line with this file and press red button «Delete»,
then confirm deleting by pressing on green button «Yes». Press red button «NO» for rejection of deleting
(button box of colored function pushbuttons [8] on Figure 3).
For activation or stop of playback of background video file set cursor on line with the necessary video
file and press button «OK» (button box [13] on Figure 3).
Background audio
In this menu section it is possible to see the list of downloaded to hard drive catalogs with MP3 files,
which may be played as background audio, activate or switch off necessary file catalog, to download new
audio files to hard drive of the device or to delete unnecessary files.
Background Audio. Switching on/off playback of background audio in pauses between songs playback.
Background audio volume. Control of playback volume of background audio relatively to general
volume, set in karaoke system, in percents.
Uploading of catalogs with audio files to be done as follows:
1. Make on empty USB drive new folder, write to it audio files in MP3 format.
2. Insert USB drive to USB port ([6] on Figure 1 or [4] on Figure 2).
3. Locate cursor on one of free cells in the list of catalogs. If cursor locates on occupied cell
presented on hard drive of the device catalog will be replaced by the new one.
4. Press yellow button «Add/change» (button box of colored function pushbuttons [8] on Figure 3).
Will display dialog box «Add file» with the list of connected to the device USB drives.
5. Locate cursor on line with name of necessary USB drive and press «OK» (button box [13] on Figure
3) for displaying of the list of folders available for copying.
6. Locate cursor on line with folder for copying and confirm option by pressing yellow button «Add
file» (button box of colored function pushbuttons [8] on Figure 3). Will start copying of audio files
to hard drive of the device.

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IMPORTANT: do not disconnect USB drive from USB port
before the end of copying process.
On completion of copying the name of downloaded folder with audio files will appear in the list of
downloaded to hard drive of the device folders.
In order to delete unnecessary catalog with audio files set cursor on line with the name of this catalog
and press red button «Delete», then confirm deleting by pressing on green button «Yes». Press red button
«NO» for rejection of deleting (button box of colored function pushbuttons [8] on Figure 3).
Settings by default
This menu section is designed to reset main parameters of user-definable AST-50 settings to
recommended by manufacturer settings (delivery settings). Resets of settings do not affect changes done in
the menu option «Administrator».
4.3.3. Menu option «Administrator»
To enter this menu option type the password «1234». Password request will be one time after every
restart of karaoke system.
General Settings
Language. Selection of the language of interface and karaoke system messages.
Songs Counter. Control of songs counter dwell from the beginning of track playback.
Microphone Processing
Input gain. Increases the sensitivity of the microphone inputs. Do not use with wireless systems.
Limiter. Limits maximum volume level of signal received from microphone port of the device.
Limitation is designed for overload protection of acoustic equipment.
HB/MB/LB/LB2 Frequency. Selection of central frequency from HB (100 Hz – 10000 Hz) / MB (80 Hz –
4100 Hz) / LB (80 Hz – 1700 Hz) / LB2 (40 Hz – 350 Hz) frequency range for adjustment.
HB/MB/LB/LB2 Level. Volume of amplification/signal depression in the selected frequency range
HB/MB/LB/LB2.
MIDI
Melody. Control of playback volume of prompt melody accompanied the track.
Reverberation Type. Selection of simulation algorithm of acoustic model of room.
Reverberation Level. Tuning of effect intensity.
Video
HDMI/Component Mode. Selection of mode of operation of component and HDMI outputs of karaoke
system.
Composite output(s) mode. Information about the format of video signal at the composite video
output of the device. Depends on the selected mode of operation of component and HDMI outputs.
A/V delay. Setting of video signal delay time relatively to audio, in milliseconds. Designed for
compensation of uninterruptible post processing of signals in some models of TV and home theatre
receivers.
Network / Local area network (LAN)
IP Address Mode. Selection of network settings determination method for connection of AST-50 to
local area network. For automatic determination of connection parameters to local area network use value
«Assigning». For independent setting of parameters values use the «Static» method of IP address receiving.
IP address. Setting of IP address of built-in network adapter of AST-50.
Netmask. Setting of net mask.
Gateway. Setting of IP address of gateway by default.

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Primary DNS. Setting of IP address of initial DNS server.
Secondary DNS. Setting of IP address of secondary DNS server.
Network / Wireless network (Wi-Fi)
Connection using wireless network is impossible if AST-50 is already connected to local area network
by the cable.
Status. Displays the current status of connection to wireless network.
Available networks. The list of available for connection wireless networks. In order to connect to
wireless network locate cursor using arrows on the line with necessary network and press button «OK»
(button box [13] on Figure 3).
Security
Password on Boot. Field for entering password, requesting during start of AST-50. Password to be
composed only with figures and may contains from 1 to 10 symbol.
Ask Password on Boot. Activation or switching off password request during start of AST-50.
Settings Password. Field for password requesting during entering settings mode. Password to be
composed only with figures and may contains from 1 to 10 symbol.
Protect Settings with Password. Activation or switching off password request during entering settings
mode.
Settings by default
This menu section is designed to reset main parameters of administrative AST-50 settings to
recommended by manufacturer settings (delivery settings). Reset of settings do not affect changes done in
the menu option «User».

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5. AST Manager, the program to control the device using tablet PC
By means of the special program «AST Manager» it is possible to control the device AST-50 using
tablet PC. The program gives the full control interface substituting screen of connected to the device TV set.
References for downloading and installation of «AST Manager» available on the web site of the
company Art System (http://www.art-system.ru) in the section «Service and support / Software».

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6. Installation of updates (firmware)
It is recommended to regularly check availability of the new versions of software (firmware) updates
for the device and to renew these updates timely.
For independent updating of firmware make the following actions:
1. Download file with the last firmware update in Personal Area (http://www.astupdate.com/),
section «Software and documentation».
2. Save the file with update on empty USB drive.
3. Turn on the device, wait for it's loading, insert USB drive with update to USB port on the front
panel of the device.
4. On display (TV set) screen connected to the device will appear information message with request
to renew software. For continuation press green button «Yes», for rejection of installation press
red button «NO» (button box of colored function pushbuttons [8] on Figure 3).
5. Updating process takes a few minutes. On completion of the procedure the device will
automatically reload, whereupon it is ready to work.
IMPORTANT: do not disconnect USB drive from USB port
before the end of copying process.
6. Disconnect USB drive from USB port.
In case that later version of software (firmware), than presented on USB drive, is already installed to
the device, update will not start.