品牌:施耐德 | 規格:AS-B984-100 | 材質:AS-B984-100 |
產地:法國 |
AS-B984-100
AS-B984-100
AS-B984-100
FSK採用兩個不同的頻率發送信號,電平“1”時用74kHz,電平“0”時用63.3kHz;而BPSK則採用相同頻率發送“1”和“0”,其相位差為180度。監控通信常用標準是CEA179,其指定BPSK發送頻率為131.5kHz,波特率是5.5kbps或每個碼元24個周期。雖然CEA-179沒有對FSK加以規範,但它完全兼容該標準的協議棧,因此也可以使用CEA-179進行傳輸。在滿足係統限制的前提下,數字信號控制器可以通過改變傳輸頻率來避開幹擾,從而提高通信性能。
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