Specifications

Installation
D-113d Projection System Installation/Operation Manual 27
PRE
L
IMINAR
Y
Table 3-4 lists the lens shift limits for each available D-113d lens, as percentages and
absolute measurements with a 120 x 67.5 inch (1.78:1) screen.
Audio/Video
Synchronization Issues
Due to its extraordinarily high level of video processing performance, the DHD Controller
may distribute video signals with a perceptible level of audio latency. In order to easily
solve this issue, Runco recommends using the DHD Controller with a high-quality audio
receiver that has the ability to effectively synchronize audio and video signals.
Most mainstream audio receiver/switchers have the ability to synchronize the audio and
video to the Advanced Television Systems Committee (ATSC) prescribed tolerances.
According to the ATSC, the sound program should never lead the video program by more
than 15 milliseconds, and should never lag behind the video program by more than 45
milliseconds.
In addition, many video displays and A/V receivers introduce additional latency that needs
to be compensated for during the installation.
Table 3-5 shows the amount of possible audio latency given different signal input timings.
Table 3-4. Vertical and Horizontal Lens Shift Limits
Lens Option
Athena Uno
Athena Dos
Athena Tres
Athena Cuatro
Athena Cinco
Lens Shift Limits, as Percentages of Screen Height or Width (Note)
Vertical
(Note 2)
Up 17% 60%
Down 17% 60%
Horizontal
Left 6% 25%
Right 6% 25%
Lens Shift Limits in Inches, with a 120-by-67.5 inch (1.78:1) Screen
Vertical
Up 11.48 40.50
Down 11.48 40.50
Horizontal
Left 7.20 30.00
Right 7.20 30.00
Note: Vertical shift limits are percentages of the screen height. Horizontal shift limits are
percentages of the screen width.
Table 3-5. Possible Audio Latency for Various Input Timings
Input Timing Possible Audio Latency (milliseconds)
480i 133
480p 83
576i 160
576p 100
720p/50 100
720p/60 83