![]() ![]() It is necessary to emphasize that this is not the world of long haul communication or Wide Area Networks-the world usually associated with long distance telephone dial-up circuits, leased lines, ISDN, packet switching, ATM or frame relay. This is the world of what is commonly called short haul, limited distance or local area data communication. The distances involved may vary from several inches to several thousands of feet. An example of this environment, the small office building, is shown in Figure 1. Premises data communications deals with data communications in the office building, factory, manufacturing plant site or campus. It is best to begin by describing the setting for the communications problems of interest. This book is written for the "hands on" user of data communication equipment, not the experienced design engineer. This book is a "Physician’s Desk Reference" not a "Gray’s Anatomy." Furthermore, we assume that our audience may or may not have a technical background in data communications. Either something needs to be fixed, expanded or protected. It has problems which need to be dealt with. The approach is very "results oriented." The view taken is not that of the academic network architect who has the opportunity and freedom of designing and specifying everything in advance by "starting with a blank page." Rather, for the most part, it is from the perspective of the person who has a premises data communications capability and for some reason or other is unhappy with it. In this book we will explore its many facets, expose the various problems encountered in this area of interest and illustrate the way that these problems can be solved. Welcome to the subject of premises data communications. ![]() Extending Distance - The Need For Short Haul ModemsĦ.2 Where Should You Worry About Lightning?Ħ.3 When Should You Worry About Lightning? AVI can be recompressed into DV type 1, plus you can also show the inlay, extract audio, overwrite a date code, and convert the aspect ratio.2.5 Factors Influencing The Choice Of An Interface ConverterĢ.6 Interface Conversion With Work StationsĤ. Any of these fields can be copied to the Clipboard including their full or short name, file date or size.ĭVdate enables you to work in full-screen mode, save the playlist as a plain text file, turn off sound, change the code, disable deinterlacing, read the RIFF header, add the date or time code, and adjust the frame rate. DVdate will display detailed regarding the file's date code and codes, resolution, frames per second, codec, duration, and audio properties such as format, bit rate, frequency, and channel mode. In the main window of the program, you can preview the clip as well as use a slider to navigate it frame by frame. The tool's graphical layout includes numerous features and AVI items can be opened via the built-in file browser or using the drag-and-drop method. Because DVdate is portable you can directly run the program from a USB flash drive or your PC's local hard drive. DVdate: Retrieves information about your AVI videos, such as the used codec, duration, FPS rate, etc, converts DV files, extracts audio, fixes video framerate, and moreĭVdate is a small and portable application that's free for personal use and allows you to view Audio Video Interleave file information. ![]()
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