Videonics MXPro DV, Руководство пользователя

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I
NSTALLING
MXP
RO
DV S
OURCES AND
O
UTPUT
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Source — A source is an input device. Each source provides a video signal, audio sig-
nal, or both. You use MXProDV to combine these signals. Sources can be DV (Digital
Video), Y/C (S-Video) or composite video devices.
The preceding illustration shows that you can connect up to 10 input sources to
MXProDV at the same time. However, you can only use four input devices at any
given time.
Using the MXProDV Route function (see “Route” beginning on page 92) you can
select the input sources to use in a given situation. You can even use the Learn mode
to have MXProDV remember various configurations for you. When you want to use
a particular configuration, use the Learn function to select the one you want.
DV Sources — DV Sources can be camcorders, VCRs and some computer cards. The
camcorders and VCRs can be DV, miniDV, DVCAM, DVCPRO or Digital 8 devices
that output standard 25 Mb/s DV 4:1:1 (NTSC) or 4:2:2 (PAL). Digital-S, DVCPRO50
and other devices using 4:2:2 or 50 Mb/s sampling can NOT be used.
DV audio is delivered along with the video via a FireWire cable. DV audio inputs can
be 2-channel or 4-channel, 32 kHz audio or 2-channel, 48 kHz audio. 32 kHZ audio
may be called 12-bit audio in your camcorder/VCR documentation; 48 kHz audio
may be called 16-bit audio. 44.1 kHz audio cannot be used.
Output — An output is a device on which you record and/or broadcast a signal. The
signal might contain video, audio, or both. This signal is often a mix of signals com-
ing into MXProDV from one or more sources. The output device might be a VCR
with an optional monitor attached, or it might be a live broadcast.
The preceding illustration shows that you can connect up to five output devices to
MXProDV at the same time. You can use all of these devices simultaneously for video
output; audio output will be limited to DV plus one or two analog devices, depend-
ing on how you set the 2-channel audio output parameter in the Setup function.
DV Output vs. DV Sources — In the Setup function, select whether you want your
audio output to be 4-channel (default) or 2-channel. For DV, 4-channel audio is out-
put at 32 kHz, 12-bit samples; 2-channel is output at 48 kHz, 16-bit samples. If you
select 2-channel output, your DV audio inputs must also be 48 kHz audio; 32 kHz
inputs will be muted or distorted. If you select 4-channel output, your DV audio
inputs can be 32 kHz or 48 kHz audio.