Crestron
DVPHD
High Definition Digital Video Processor
DVPHD Troubleshooting (Continued)
TROUBLE
POSSIBLE CAUSE(S)
CORRECTIVE ACTION
Incorrect
displayed time
and date.
Device recently
rebooted.
The device does not have an
internal real time clock. The
time and date resets to
01/01/00 12:00:00 when
rebooted.
HD sources do not
display (Black
Window), but
other sources do.
The display device does
not support HDCP.
Make sure the display is
HDCP compliant and the
device connected to the DVI
or HDMI port on the display.
When HD sources
are connected the
QM output only
displays a black
screen
HDCP requires all non-
encrypted outputs be
disabled when
displaying protected
content.
None.
Check Network Wiring
Use the Right Wire
To ensure optimum performance over the full range of the installation topology, use
Crestron Certified Wire only. Failure to do so may incur additional charges if
support is required to identify performance deficiencies because of using improper
wire.
Calculate Power
CAUTION:
Use only Crestron power supplies for Crestron equipment. Failure to
do so could cause equipment damage or void the Crestron warranty.
CAUTION:
Provide sufficient power to the system. Insufficient power can lead to
unpredictable results or damage to the equipment. Use the Crestron Power
Calculator to help calculate how much power is needed for the system
(
).
When calculating the length of wire for a particular Cresnet run, the wire gauge and
the Cresnet power usage of each network unit to be connected must be taken into
consideration. Use Crestron Certified Wire only. If Cresnet units are to be daisy
chained on the run, the Cresnet power usage of each network unit to be daisy
chained must be added together to determine the Cresnet power usage of the entire
chain. If the unit is run from a Crestron system power supply network port, the
Cresnet power usage of that unit is the Cresnet power usage of the entire run. The
wire gauge and the Cresnet power usage of the run should be used in the following
equation to calculate the cable length value on the equation’s left side.
Cable Length Equation
L = Length of run (or chain) in feet
R = 6 Ohms (Crestron Certified Wire: 18 AWG (0.75 mm ))
or 1.6 Ohms (Cresnet HP: 12 AWG (4 mm ))
P = Cresnet power usage of entire run (or chain)
2
2
L <
40,000
R x P
Where:
Make sure the cable length value is less than the value calculated on the right side of
the equation. For example, a Cresnet run using 18 AWG Crestron Certified Wire and
drawing 20 watts should not have a length of run more than 333 feet (101 meters). If
Cresnet HP is used for the same run, its length could extend to 1250 feet (381
meters).
Operations Guide – DOC. 6545C
High Definition Digital Video Processor: DVPHD
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Содержание DVPHD
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