Labels:box | bulletin board | clock | crt screen | dialog box | earth | monitor | poster | reckoner | sky | windowpane OCR: 50 100 m Signal ou interval of silence m 1 Sending duration Transmission BINARY CODE Reception SIGNALS (limit values) Safety margin (duration) Recognition time of signal or or interval f silence t 100 ms CCITT 46930 FIGURE 2/0.121 Numerical Signal Flements 3/Q.121 Sianeltine timung druyrams tigures and give diagiams showing .0r tine signal clements (Figure 1} and Tor numerical signal clemeus T (Fiqure 21: the senlirg dratict itransnission at voice f'requcncy the linc} : tie reeeived duration (direct curr ent xignals at the signal Feceivcr (ndnO the Har'gins that allow for equipment lou being in adji ustment, etc the recognition time (which assumex an operating margin} of the receiving switching cquiptent : this tnarpl detined ber lower iiuit and a upper titit The switehing eaipmsnt must cu ...
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