DIDX010 - BALBOX RS232 Data Inserter/Extractor
RS232 ½ÅÈ£¸¦ ÀÔ·Â¹Þ¾Æ À̸¦ SDI ½ÅÈ£¿¡ ½Ç¾î¼ ºñµð¿À ½ÅÈ£¿Í °°ÀÌ ¼Û¼ö½Å ÇÏ´Â Àåºñ ÃÖ´ë µ¥ÀÌÅÍ ÃßÃâ ¼Óµµ : 19,200b/s Local/GPI ÄÁÆ®·Ñ ÀÔ·Â : 1 x SDI, RS-232 Ãâ·Â : 2 x SDI
DIDX010 - BALBOX RS232 Data Inserter/Extractor. |
The DIDX010 allows RS232 data to be transported within SDI video signals. The insertion method allows the data to survive subsequent MPEG compression, particularly through MPEG encoders which can handle VBI as video. The user may chose where the data is carried within the SDI. Two SDI outputs are provided. RS232 data may be input at 9,600bps or 14,400bps, and extracted data is output at 19,200bps. The output data rate must be higher than the input data rate as the SDI link does not provide the usual RS232 handshaking mechanisms. Each unit may be set by the user to insert or extract data. One unit will be required at each end of the link. By cascading two or more units it is possible to achieve redundancy, or increase the data capacity. The units will not interfere with embedded audio data. A bypass relay is incorporated to route the SDI input to the ¡®main¡¯ SDI output to ensure signal continuity in the event of power discontinuity, or under user control. The DIDX010 is housed in a robust case designed to be free-standing but up to four BALBOX style units can be mounted in a 1U high tray. The unit has an integral mains power supply.
SDI INPUT CHARACTERISTICS Input signal 270Mb/s serial digital video to SMPTE RP259M Line standard: 625/50 or 525/60 automatically detected Cable equalization: up to 250m of Belden 8281 coaxial cable or similar Input impedance: 75 ohm terminating Input return loss: >15dB Input connector: BNC socket
DATA CHARACTERISTICS Data format: 8bit, no parity, 1 stop bit (2 stop bits at 14,400b/s). Data connector: 9way sub-miniature D-type socket, with screw-locks. Input rates: 9,600b/s (1stop bit) or 14,400b/s (2 stop bits) Extraction rate: 19,200b/s
SDI OUTPUT CHARACTERISTICS No of outputs: 2 Output signal 270Mb/s serial digital video to SMPTE RP259M Bypass: Power fail/user select between SDI input and main SDI output Output impedance: 75 ohm Output return loss: >15dB Output connectors: BNC socket x 2
CONTROLS DIP switches: Manual bypass Insert/Extract 9,600/14,400b/s Rotary control: Insertion point selection INDICATORS LED 1: Bi-colour, status LED 2: Power
INSTALLATION DATA Package: Standard BALBOX housing, with three 75ohm BNC signal connectors and one 9w D-type socket. Size: 184 x 103 x 42.4mm. Weight: 950g. Mains supply: 90 – 250Vac Consumption: <15VA
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