Over what voltage range will the voltage inputs on the DAM and DVM trigger?
The circuit is set up for 24 Volts, although the optos (with the 1K series resister installed) will operate down to 11.5 volts. This results in about 10mA, which is at the bottom of the opto's sp ...
- How can I make a playlist uninterruptible for the AM4 or DVM?
Select
"Uninterruptible Mode" after clicking the "new command" in Playlist Builder, or
just add a "U" to the beginning of the text file playlist.
- Is my Digital Video Machine compatible with White Book Video CD files?
White Book files are MPEG-1 system streams packetized to the White Book, or Video CD, specification. Like DVD VOB files, this extra information includes navigational menus, etc. To play a White ...
- Is my Digital Video Machine compatible with a DLP or D-ILA digital projector?
The DVM/HD and DVM2 both include analog component video outputs that are fully compatible with digital projectors that provide corresponding inputs. For more information on output configurations, ...
- How do I make MPEG-2 files for my Digital Video Machine?
The most important step in creating video for your application is to perform the highest quality MPEG encoding of your source material.
Encoding professional-quality MPEG material is more ...
- Will the DVM2 play DVD files?
The Digital Video Machine 2 plays MPEG-2 program streams that are very similar to the VOB files found on a DVD, but without the extra embedded navigational information. It is sometimes possible to ...
- How big a hard drive can I get with my Digital Video Machine?
The size of drives for the DVM2 and DVM/HD line are constantly increasing. Optional drives at least twice as big as the standard drive may be ordered along with your unit, or substituted for the s ...
- Why does my DVM2 lose audio/video sync over time?
Your audio bitrate may be 192Kbps. There is a known issue with 192Kbps audio that causes cumulative A/V sync loss. You can either re-encode the stream at another bitrate (e.g. 224Kbps) or use a se ...
- Videos that individay play correctly on the DVM2 dont play sequentially.
The type of encoding may be different from one video file to the next. Because playlists default to seamless operation, the DVM2 will not stop decoding the video stream between files. If encoding ...
- How can I implement an attract loop without a show controller?
You can use a looping playlist that contains the attract loop followed by your main show. The playlist would look like this:
L1, U, 2, I, ;
In the above example, file 1 is the attract loop and f ...
- My DVM2 plays audio and video out of sync and the output is jerky.
There are two common causes for this problem. First, you may be playing your material at the wrong sample rate. Our test material contains audio with 44.1KHz sample rates. The DVM2 uses the lowes ...
- Why do I need to reissue a play and loop command to start the DVM2 looping again?
Try turning on the 75 ohm termination switch, even though you may not be using the unit in external sync mode. Sometimes the sync input can pick up extraneous video signals and cause the unit to s ...
- How do I put video onto my DVM2?
Methods for transferring video onto a DVM2's hard drive are described in the http://www.alcorn.com/products/dvm2/manual.html]DVM2 manual, and a detailed description for how to FTP material onto th ...
- I just received my DVM2. How can I quickly get a video to play?
Several methods for quickly playing some test material on the DVM2 are described in the Getting Started Guide in the beginning of our http://www.alcorn.com/products/dvm2/manual.html]DVM2 Manual.
- The Video Sync LED on my Digital Video Machine 2 flickers on and off.
The sync signal should be terminated.
For the DVM2, move the 75 Ohm Term dip switch on the rear of the unit to the down or ON position. If multiple units are daisy chained together, and this unit ...
- How can I play video from multiple DVM2s in sync?
You'll need to connect all the DVM2s together using the sync circuit on the rear of the units. Connect the Video output (bottom, left BNC connector) of the first DVM2 to the sync input (top, right ...
- What kind of surround sound do you play?
Dolby 5.1 is available on the digital audio output of the DVM2 and the DVM/HD. It comes out as a digital bitstream which can be connected to an external decoder to provide analog left, center, rig ...
- How can I play video on the DVM2 with no audio?
The DVM2 plays MPEG-2 program streams. By definition, a program stream must include an audio stream as well as a video stream. If you do not want to use audio in your show, you must still create a ...
- Does the DVM2 lock to SMPTE or EBU timecode?
No. In order to use timecode in your show, you must record timecode onto one of the audio channels in the material for the DVM2. Other equipment can then lock to this timecode if they need to be s ...
- Why is the video output from my DVM2 jerky and pixelated?
Your material may be encoded at too high a bitrate. The DVM2 plays MPEG 2 program streams with a maximum multiplexed bitrate of 10Mbits/s. This means that after the video and audio elementary stre ...