The term postmodernism has been applied both to the era following modernity, and to a host of movements within that era (mainly in art, music, and literature) that reacted against tendencies in modernism.
A CSU/DSU (Channel Service Unit/Data Service Unit) is a hardware device about the size of an external modem that converts a digital data frame from the communications technology used on a local area network (LAN) into a frame appropriate to a wide-area network (WAN) and vice versa.he Data Service Unit (DSU) manages line control, and converts input and output between RS-232C, RS-449, or V.xx frames from the LAN and the time-division multiplexed (TDM) DSX frames on the T-1 line. The DSU manages timing errors and signal regeneration.
The DCU-2 advanced digital controller can be used with any HAM or Tailtwister series rotators. Large, graphic LCD screen (1 3/8. W x 2 5/8 H) with large bright numbers and letters on an easy-to-the-eye blue background blends in with most modern stations.LCD displays rotator heading, external controller heading and even your callsign. DCU-2 has automatic or manual control.Dial in your heading with the internal control and press 'Rotate', the antenna will automatically rotate to your direction.arge, graphic LCD screen (1 3/8. W x 2 5/8 H) with large bright numbers and letters on an easy-to-the-eye blue background blends in with most modern stations. LCD displays rotator heading, external controller heading and even your callsign.