Installation
Folded Optics ➤ In rear screen applications where space behind the projector is limited, a mirror may be used to fold the optical path, as shown in Figure
Screen
Mirror
| Figure |
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Audio/Video ➤ | Due to its extraordinarily high level of video processing performance, the DHD Controller | |
Synchronization Issues | 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 | |
| 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. |
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| In addition, many video displays and A/V receivers introduce additional latency that needs | |
| to be compensated for during the installation. Table | |
| audio latency given different signal input timings. | |
| Table | |
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| Input Timing | Possible Audio Latency (milliseconds) |
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| 480i | 133 |
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| 480p | 83 |
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| 576i | 160 |
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| 576p | 100 |
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| 720p/50 | 100 |
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| 720p/60 | 83 |
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| 1080i/25 | 160 |
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| 1080i/30 | 133 |
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| 1080p/24 | 125 |
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| 1080p/50 | 80 |
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| 1080p/60 | 67 |
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20 |