System information
Previewing audio
External monitor previewing differs in one respect from  printing to tape from the timeline: no audio is sent 
through the IEEE-1394  card. As shown in the illustration in the previous heading, audio is sent  to the sound 
card and then on to the mixer (if present) and speakers so   you can mix your audio on better speakers than 
are typically found in  television monitors.
Before printing to tape, you may wish to preview the audio   through the television monitor speakers to 
ensure a good "TV mix." You  can use the print-to-tape feature to send the full video and audio to  the 
external monitor. Follow the steps for printing to tape from the timeline, but do not  set the camcorder to 
record. The video and audio streams are sent through  the IEEE-1394 card to the external monitor. For more 
information, see "Printing Video to Tape from the Timeline" on page 503.
Turning on external-monitor preview
1.  Use the Preview  Device tab in the Preferences dialog to configure the display you  want to use as a 
video preview monitor. For more information, see "Preferences - Preview Device Tab" on page 585.
2. 
Select the Preview on External Monitor button   in the Video Preview window.
You can turn off external preview by pressing Alt+Shift+4.
Video is sent to the external monitor and the Video Preview window at the same time. If you 
experience dropped frames, try clearing the Display frames in Video Preview window during 
playback check box on the Preview Device tab in the Preferences dialog.
External Monitor via SDI
You can send video directly from the timeline to a video monitor connected to an SDI card.
Important: Blackmagic  Design DeckLink HD Extreme/Intensity Pro/HD Extreme 3D and AJA Io 
Express,  KONA 3X, LH, LHe, LHi, LS, and LSe cards are supported. Please note that  AJA XENA cards are 
now branded as KONA cards. For more information, see 
http://www.aja.com/products/kona/transition.php.
For the latest information about supported hardware, see 
http://www.sonycreativesoftware.com/vegaspro/io#sdi.
Notes:  
n  Vegas Pro allows you to use one external video device at a time. The external monitor display 
will be unavailable during video capture.
n  When using  an external video monitor, you need to enable external-monitor preview  each time 
you start Vegas Pro. This  change was made to prevent the possibility of hiding the main Vegas 
Pro window behind the secondary display  when monitors are improperly configured.
1.  Use the Preview  Device tab in the Preferences dialog to configure your SDI card. For more 
information, see "Preferences - Preview Device Tab" on page 585.
PREVIEWING YOUR PROJECT477










