Warning: mysql_query(): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) in /home/content/16/11852616/html/21say-com/wp-content/plugins/translate/translate.php on line 11

Warning: mysql_query(): A link to the server could not be established in /home/content/16/11852616/html/21say-com/wp-content/plugins/translate/translate.php on line 11

Warning: mysql_num_rows() expects parameter 1 to be resource, boolean given in /home/content/16/11852616/html/21say-com/wp-content/plugins/translate/translate.php on line 11

Warning: mysql_query(): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) in /home/content/16/11852616/html/21say-com/wp-content/plugins/translate/translate.php on line 20

Warning: mysql_query(): A link to the server could not be established in /home/content/16/11852616/html/21say-com/wp-content/plugins/translate/translate.php on line 20

Warning: mysql_query(): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) in /home/content/16/11852616/html/21say-com/wp-content/plugins/translate/translate.php on line 328

Warning: mysql_query(): A link to the server could not be established in /home/content/16/11852616/html/21say-com/wp-content/plugins/translate/translate.php on line 328

Warning: mysql_num_rows() expects parameter 1 to be resource, boolean given in /home/content/16/11852616/html/21say-com/wp-content/plugins/translate/translate.php on line 329

Warning: mysql_query(): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) in /home/content/16/11852616/html/21say-com/wp-content/plugins/translate/translate.php on line 335

Warning: mysql_query(): A link to the server could not be established in /home/content/16/11852616/html/21say-com/wp-content/plugins/translate/translate.php on line 335

Warning: mysql_num_rows() expects parameter 1 to be resource, boolean given in /home/content/16/11852616/html/21say-com/wp-content/plugins/translate/translate.php on line 336
有线电视放大器的斜率、均衡 | 骆驼调频
现在的位置: 首页 > Electron > 正文
有线电视放大器的斜率、均衡
2007年11月16日 Electron ⁄ 共 198字 暂无评论 ⁄ 被围观 419 views+

有线电视信号通过一定长度电缆的传输后所造成的高低频段电平差,如(45-750MHz 高低频段的衰减量相差约4倍,即45MHz频点衰减5DB时,750MHz频点则衰减20DB),请调整斜率、均衡钮,使放大器输出信号高低段平坦。电视节目分布在三段低中高(L/H/U),比如L段的节目都很清晰,U段的节目有雪花或条纹,这就是高低频电平差的原因,就可以用调斜率来改善,使它们都一样清晰度,后还可以调整增益。

给我留言

留言无头像?