Black Box AC076A Скачать руководство пользователя страница 12

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VIDEO CONVERTER PRO FOR MAC

• When you make VCR recordings,

use either (1) a “Pro” or
“Broadcast” grade, name-brand
tape, or (2) an S-VHS (Super-
VHS) tape (these will play in
standard VHS machines). Also,
record using the fastest speed
(the speed corresponding to the
shortest total time per tape—
2 hours on a T-120 cassette). 
You will have less noise and 
tape jitter in your recording.

• Almost all TVs and video

monitors overscan images,
resulting in some of the picture
being “cropped” off the edges 
of the picture tube. The
Converter’s UNDERSCAN mode
will shrink images to compensate
for this overscan, which will vary
in amount from  one TV or
monitor to another. To ensure
that the useful parts of your
images are visible on TVs and
monitors, keep all text and other
informational content at least
5% in from the sides, top 
and bottom.

• By far the most annoying effect

that occurs when a computer
image is converted to video is
“flicker.”  This rapid flashing of
images’ brightness can appear 
to be pervasive throughout the
screen or localized to one
particular area. It is most
noticeable on thin horizontal
lines, particularly on bright lines
against a dark background. It is
not seen on computer monitors
because all the horizontal lines
that make up the image are
drawn on the screen in one pass
from top to bottom, 60 or 70
times a second. When the same
image is converted to video, a
single line will only be drawn on
the screen either 30 (NTSC) or
25 (PAL) times a second. This
rate is not rapid enough to make
your brain register each 

drawing

of the line as the same 

continuous

line, so the line appears to
flicker. The anti-flicker filter 
in your Video Converter Pro 
for Mac employs an advanced
design technique to overcome
this problem with only a very
slight loss in vertical detail.

Содержание AC076A

Страница 1: ...hours a day 7 days a week Call 724 746 5500 or fax 724 746 0746 Mail order Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 Web site www blackbox com E mail info blackbox com AUGUST 2000...

Страница 2: ...to take whatever measures may be necessary to correct the interference Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operat...

Страница 3: ...2 VIDEO CONVERTER PRO FOR MAC...

Страница 4: ...Hooking Up Video Output 5 3 3 Selecting Your Video Standard 6 3 4 Booting your Converter System 6 4 Operation 7 4 1 Indicators 7 4 2 Front Panel Controlss 7 4 3 Other Features 8 5 What to Expect from...

Страница 5: ...mounted toggle switches Underscan Flicker Reduction Freeze Image Indicators LEDs 1 Power 1 Lock Connectors 1 Mac Input VIDEO IN DB15HD female 4 Video Output Mac VIDEO OUT DB15HD female NTSC PAL Compo...

Страница 6: ...mputer Chapters 3 and 4 of this manual show you how to install and operate your Converter Chapter 5 gives you some guidelines on what you should and shouldn t expect from your converted computer image...

Страница 7: ...ment VIDEO OUT This output is a passthrough of the MAC IN input You can connect a standard computer monitor or a multi sync monitor if your system supports these to this output VIDEO Feed this single...

Страница 8: ...sure the FREEZE IMAGE switch on the front panel is in the NORMAL position so that your computer image sequences will flow smoothly Your Video Converter Pro for Mac is now ready for normal operation Op...

Страница 9: ...mages that the Coverter outputs in Composite S Video and RGBS formats will fill the entire viewable screen area But because some monitors overscan their screens some desirable parts of your images cou...

Страница 10: ...eceived through VIDEO IN will be displayed 4 3 Other Features If the computer input signal is no longer present on VIDEO IN because the computer has been turned off or the input cable has been disconn...

Страница 11: ...r images whose sharpness and detail are clearly visible on today s monitors and displaying them on TVs or recording them on VCRs that can t do them justice But all is not lost There are a few things y...

Страница 12: ...5 in from the sides top and bottom By far the most annoying effect that occurs when a computer image is converted to video is flicker This rapid flashing of images brightness can appear to be pervasiv...

Страница 13: ...direct connection to a Mac monitor If the monitor s display looks OK call us No video outputs 1 Is the FREEZE IMAGE switch in the FREEZE IMAGE position If not go to Step 2 2 Is your video equipment i...

Страница 14: ...ith your Video Converter Pro for Mac In this TV signal system there are actually two signals The LUMINANCE Y signal carries the sync and brightness components of the picture while the CHROMINANCE CHRO...

Страница 15: ...H Sync In MAC OUTPUT VIDEO OUT 1 Red 2 Green 3 Blue 5 Ground 6 Red Ground 7 Green Ground 8 Blue Ground 9 ID Bit LO Res In 10 Ground 12 N C 13 Comp Sync Out 14 V Sync Out 15 H Sync Out COMPOSITE VIDEO...

Страница 16: ...1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746 Copyright 2000 Black Box Corporation All rights reserved...

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