User`s manual

Alcorn McBride Digital Video Machine HD User’s Manual Rev 1.0
15
Power Connector
The power input is a captive 2.5x5.5x10mm barrel connector with center pin (+) and
the outer rim (-). The Digital Video Machine requires 9.0 VDC to 36.0 VDC at 2 Amp.
This is useful for mobile applications where an automotive battery is used to power a
DVMHD. An external 100-250 VAC 50/60Hz input universal switching power supply is
provided with the unit.
DO NOT EXCEED THE SPECIFIED INPUT VOLTAGE RANGE!
Audio/Video Outputs
The audio RCA
outputs provide a
standard -10dbu
unbalanced signal.
The video output
format (1080i, 720p)
can be configured
using the front-panel
menu or with Serial or
Ethernet command.
The composite video
output always
provides a scaled
down Standard-
Definition output. No
configuration
necessary.
Every DVMHD comes equipped with many audio and video outputs. Audio is
available on the unbalanced RCA, digital coax, HDMI, and HD-SDI connectors. Video
is available on the YPbPr component, Composite, HDMI, and HD-SDI connectors.
In most circumstances, all of these outputs are on simultaneously. The only
exception is when you are playing content that is encoded with a surround sound
format, such as Dolby or DTS. In this case, the analog audio outputs will remain
silent.
With the exception of the composite video output, all of the video connectors will
output High-Definition video using the configured video format. The composite
output, on the other hand, always scales the current output down to a Standard-
Definition NTSC or PAL video format. This makes this connector ideal for interfacing
to monitoring equipment like rack monitors or touch-panel control systems that accept
composite video.
Serial Port: DB-9 Connector
A serial cable is
provided with each
Digital Video Machine.
This input is a standard DB-9 male RS-232C connector. This port is designed to
connect to a Show Controller, Computer, or other control device using a straight-
through (not null-modem) 9-pin cable. The connector pin assignments are listed in
the table below.
Pin Function
2 TXD (data from DVMHD)
3 RXD (data to DVMHD)
5 GND