AITech HDTV USB User Manual

							
Playback setting 
 
z MPEG2 accelerator setting 
If your VGA card supports DxVA function, you may enable this function to share 
CPU loading 
z VBI setting 
If your TV program has pixel mixing in video edge, you may select here to cut it out 
z Force Decoding noisy video frames setting 
You may select here to force software to play TV program with bad reception 
z AC3 Audio Pass_Through (SPDIF output) 
If you have Dolby sound card, you may enable this function to get 5.1 ch\
annel 
sound effects. (Not all TV program carry Dolby sound) 
z Subtitle setting 
NOT available under ATSC 
z OSD  
Enable “Auto play on star up” and then the OSD will show on the screen when you 
start the player. 
z Auto play setting 
You may select to play TV program directly after launching software 
z Mute setting 
You may mute it when software is in minimum mode 
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z  Aspect ratio setting/ Full screen setting 
You may select TV program to show in different aspect ratio 
z  Stop playback while signal quality below 
You may stop playing TV program when signal  strength is below a specific degree    
						

							
System setting 
 
z Capture setting 
You may select to capture signal or multiple frames in native resolution or aspect 
ration (small size picture) format. You can set time and interval for multi-capture. 
z Power management 
If you choose “Reject”, Digital TV will stop your system from getting into hibernate 
mode. 
z Predefined Program Classes 
You may change Predefined program classes to classify program in “Program List” 
page. 
z Remote Controller LCN channel selection support 
You may set remote controller as “Logic Channel Number” mode (Recommended 
for UK, France) or “Normal” mode (Recommended for other areas). 
z Remote Controller channel switch waiting delay 2 seconds 
Channel changes 2 seconds after you press on the up or down button. 
z Start in full screen mode 
You may select to start program as “full screen” mode or “normal size” mode 
z Time-Shifting buffer size 
You may select maximum Time-Shifting time; the longer time you set, the bigger 
disk space will be required. 
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z  Parental control password 
You may set password to specific channels to avoid children from watching adult 
programs. Password will be  required when anyone want to watch these specific 
channels. 
z   Control panel setting 
You may the size of the screen as”  Windows mode” or “Full screen mode” 
z TV Application Priority 
You may select TV program as first priori ty program of your PC. If other application 
programs are used when playi ng TV, they will take CPU resource and slow down 
the player.  
						

							
Recording setup 
 
You may create/modify/delete schedule recording here
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4.4 Right Click Menu 
Right click your mouse over the DIGITALTV interface to open a pop up menu: 
Play: Play video 
Pause: Pause the video you are currently watching 
Stop: Stop the video you are currently watching 
Record: Record the video program you are currently watching
Rewind: Rewind when you are watching recorded video 
Fast Forward: Fast forward when you are watching recorded 
video 
Time Shifting: Start or pause the “Time Shifting” function 
Channel Up: Change to previous channel 
Channel Down: Change to next channel 
Last Channel: Change to the last channel 
EPG: Show EPG window 
Preview: Multi-channel preview (only for FTA channels) 
Capture: Capture a still frame of the video 
Teletext: Show “Teletext” window. 
Apid (SAP): Switch audio from different sources 
Mute: Turn the sound off 
Configuration: Show configuration page 
Channel Scan: Show Channel Scan setting page. 
Record List: Open record list 
Favorite List: Open favorites list 
Control Panel: Show control panel 
Top Most: Place DIGITAL TV always on the top 
About: Display version information of DIGITAL TV. 
 Exit: Turn off DIGITAL TV. 
 
 
 
 
 
 
 
 
 
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4.5 Keyboard Shortcuts 
 
Function  Keyboard Shortcut  
Play  Enter  
Stop  End  
Pause  Space bar 
Full Screen   Z   
Properties windows O 
Record  Home  
Stop Record  End  
Program list L 
Time Shifting  T  
Channel up   Page up   
Channel down   Page down   
Volume up   Shift + Arrow up   
Volume down   Shift + Arrow down   
Help  F1  
Key cancel   Esc   
Key enter  Enter  
DIGITAL TV Exit  X  
Mute  M 
Right Speaker   Ctrl + R   
Left Speaker   Ctrl + L 
Favorites List  V  
EPG  E  
Preview  K  
Fast Forward   F 
Rewind  R 
  
						

							
Appendix 1  Trouble Shooting 
 
General 
1. Windows cannot recognize Digital TV USB correctly  
You may switch to a different USB slot and try again.  Please make sure that your 
USB plug and USB port is clean 
 
2. Error message shows up Setting error! Fail to play the program! or Fail 
to play your program: 
 Please check the driver of VGA card and sound card 
 Please make sure the hardware and software settings are correct, and try TV 
channel scanning again  
 Please install Microsoft DirectX9.0C and Media Player 9.0 or higher version 
 Might be due to poor signal quality so that DIGITAL TV can not receive enough 
data of program or received wrong data.  
 It is a paid channel and you are not authorized to see 
  Make sure to use the latest DIGITAL TV software version for decoder.  
Register C:\Program Files\PC-TV\Common\Bin\claud.ax and CLVSD-dtv.ax 
again with regsvr32.exe in C:\Windows\System32. 
 
3. Screen blacked out when playing or playback freezes on first picture. 
Find and install the latest VGA driver and DirectX 9.0C and check if any other DTV 
players are installed.  If yes, remove them and uninstall all the filter drivers  
 
4. Which format is recorded by DIGITAL TV?  Why do I have problem with 
converting/burning this file? 
MPEG2.  However, since some broadcasters have problems at Kpbs rate in their 
TS (which is over DVD format limit), you will need to use MPEG editing software to 
adjust Kpbs rate. 
 
5. Error message “Hardware setting error” 
Please reinstall driver  
 
6. Video playing but Audio failed  
Please checks the sound card or the volume setting. 
 
7. Why my EPG, Teletext and Subtitle cannot be shown? 
In some areas, the broadcasters do not provide the mentioned services, please 
contact you broadcaster for confirmation.   
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8. Cannot find driver for R/C receiver. 
Please re-plug the receiver or change different USB port.    You do not need to 
install additional drivers because it will install the built-in HID driver in your OS. 
 
9. Remote control does not work 
Check remote control batteries.    Check remote receiver: the red light on receiver 
will remain ON as it is getting signal from the remote control.    Also, point your 
remote control to the receiver when in use.         
 
 
AT S C  
1.    Why cannot I lock any channels when auto-scanning? 
„   Check whether the antenna connec ts to the device correctly. 
„  Check whether the signal in your area is strong enough.   
 
2.  When the pictures are  not playing smoothly,   
Set application thread priority to  “High” from System Setting. 
Enable “Max CPU power required on  playback from System Setting. 
Enable “MPEG2 DxVA Accelerator” from System Setting. 
 
3.  Digital Cable : All digital Cable signal,  including HDTV through cable, are       
controlled by the cable companies. They usually require additional “DCR” – Digital 
Cable Ready Equipment and a monthly fee  in order to get digital HDTV signal 
through cable. Please contact your TV  cable company on the details of “DCR” 
equipment. Digital TV support off the ai r ATSC digital broadcast, but does not 
support digital TV signal through cable at this time. 
 
For even better reception, you may attach  the unit to a larger indoor or outdoor 
ATSC/HDTV antenna. By doing so, you ma y receive more ATSC channels and 
have few drop outs.    
						

							
 
 
Power 
Channel UP/DOWN
Volume UP/DOWN 
FAVORITE 
Mute 
Full Screen 
Stop 
Record 
ATSC/Analog Switch 
Time Shifting 
Play Back 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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