User`s guide
Quick Reference: V4HD Rear Panel
1
1. The analog video I/O section of the V4HD is equipped
with 12-bit converters that deliver 10-bit capture and
playback, with support for both RGB or YPbPr color
space. Once you’ve connected your SD and HD video
device(s) to the appropriate jacks, you can choose any
input (analog or digital) as a source (from the LCD or
software console) and the V4HD converts to all SD and
HD output formats simultaneously, including the
digital outputs discussed below.
2. The V4HD is packed full of state-of-the-art technology
mounted on no less than six separate circuit boards. It
gets hot in there. Be sure to leave plenty of room for
the fan to move air through the V4HD enclosure. Try to
avoid placing the V4HD above other heat sources.
3. Connect time code input and output here, to the LTC IN
and LTC OUT. The V4HD supports all standard time
code formats.
4. Connect blackburst or another video reference to the
VIDEO REF IN. If the V4HD is at the end of the video
sync daisy chain, flip the THRU/TERM switch to the
75
Ω
TERM
position. If you are daisy-chaining another
device, flip it to THRU. This jack also supports
HD Tri-level sync.
5. If you only need 2 or 4 channels of AES/EBU digital
audio I/O, connect them to these XLR jacks. If you
need 8 channels, connect a breakout cable to the
DB25 connector below.
6. If you only need 1 to 4 channels of analog audio input
and output, connect them to these 4 XLR input and
output jacks. If you need 8 channels, connect a break-
out cable to the DB25 connectors below. These analog
inputs and outputs are equipped with 24-bit convert-
ers that support sample rates from 44.1 kHz up to
192kHz.
7. If you need more than 4 channels of AES/EBU input/
output and/or analog input/output, connect an
8-channel DB25 to XLR breakout cable to these DB25
connectors. When you do so, the rear panel XLR jacks
become disabled. In other words, you can use either
the XLRs or the breakout, but not both at the same
time (8 channels maximum for each bank).
8. Connect a plasma, LCD, DLP or other HDMI-equipped
monitor here. Alternately, you can connect a DVI-
equipped device with an adapter cable. The V4HD
supports 8-channel PCM (uncompressed) embedded
audio over HDMI, so you could also connect this
output to an HDMI-equipped home theater receiver to
deliver both picture and multi-channel audio.
9. The two ADAT optical (“lightpipe”) ports labeled IN/
OUT provide 8 channels of digital audio input and
output at 44.1 and 48 kHz. At the 2x sample rates
(88.2 or 96 kHz), they provide channels 1-4 (in and
out) and the second set (labeled in blue) provides
channels 5-8 (in and out). When operating the optical
ports at a 2x sample rate, be sure to choose either Type
I or Type II operation, as explained in “ADAT Type” on
page 99.
10. Connect the V4HD to the computer here using any
standard FireWire A (1394a) or FireWire B (1394b)
cable. If you plan to use Apple ProRes 422 HQ (High
Quality) as your HD codec of choice in Final Cut, you
must use FireWire B. If you plan to use DVCProHD, or if
you are working in SD (any supported format), you
can use either FireWire A or B: it doesn’t matter. You
can use the two FireWire B ports to daisy-chain the
V4HD and other FireWire 800 devices to the computer,
with the computer serving as the Firewire host. But be
careful not to overload the FireWire bus with too much
I/O bandwidth.
11. For 9-pin machine control over an RS-422 equipped
device, such as a VTR or camera, connect it here. This
allows you to control the transport of the device from
Final Cut Pro and use features such as Batch Capture
and Edit to Tape.
12. In the event that a firmware update becomes avail-
able for the V4HD, you would connect this USB port to
your computer and then use software to download
the new firmware into the V4HD hardware.
13. Make audio WORD CLOCK connections here. The V4HD
supports word clock sample rates up to 192kHz. If you
need to daisy chain another word clock-equipped
device from the V4HD, connect it to the middle BNC
connector and flip the THRU/OUT switch to THRU.
14. The V4HD has an internal, international, auto-switch-
ing power supply. Connect any AC power source from
100V to 240V.
2 3 4 5 6
79 81011121314