ST/SR-1W2A2C1G/2A2C1G, this module in the DigiSlim product family incorporates an all digital encoding technology that transmits one real-time, simplex,10-bit composite video, two full duplex 24-bit audio, and two user selectable, full duplex RS-232, RS-422, Manchester, bi-phase or in combination. RS-485 (2 or 4-wire) is also supported, but only as a single full duplex channel. In addition, two full duplex contact closure channels are included. These single fiber, laser based systems are available in both, multi-mode and single-mode modules. The versatility of the DigiSlim series is enhanced by SpectraView, an on-screen video diagnostic/setup firmware system and SpectraSmart, an optional PC based network diagnostic system. SpectraView monitors the integrity of the video signal and the fiber link. A break in the fiber path will cause a loss of fiber alarm to be displayed on an associated monitor while loss of video sync will generate a loss of sync alarm on the monitor. SpectraView is easy to use, always active and eliminates the need for additional test equipment. SpectraView also includes a selectable on-board audio and data test signal generator with built-in local and remote loop-back functions. In addition a video grey scale function is included to assist in monitor and system setup. If greater diagnostic capability is required, the DigiSlim series is also available with Meridian’s SpectraSmart network management and diagnostic PC based system. SC product family is available as rack mount cards and modules that can be installed in any of Meridian’s desk chassis or in 19-inch racking frames. This system can be configured in either star (module to rack) or trunking (rack to rack) configurations. These systems can be transformed in to a standalone module by utilizing an SR-500/S (standard configuration) or an SR-1000/S.