The PROLINK3 Premium (B/W monitor) and PROLINK3C Premium (LCD monitor) are instruments for the installation, verification and maintenance of video and data systems for Terrestrial, CATV and Satellite transmissions. Developed under the OSD concept, any of the functions is described on the monitor showing the available configuration parameters. At the same time, the buttons on the keyboard used to access a particular function are symbolized by means of graphical icons. It takes direct readings for the evaluation of the quality of signals and incorporates different options for measuring digital signals. It incorporates a Datalogger for fast and easy acquisition of data. Optionally a Li+ set of batteries can be installed that will provide more than four continuous operational hours in terrestrial band, and more than two hours powering a 5 Watt LNB. Charging time is 2.5 hours from the line or the car lighter.