Fagor Hires
- 1. ﻣﻜﺒﺮ ﻭﺇﺷﺎﺭﺍﺕ ﻟﻨﻈﺎﻡ ﺍﺳﺘﻘﺒﺎﻝ ﺍﻹﺭﺳﺎﻝ ﺍﻷﺭﺿﻰ 001 FAGOR MicroMATV pro ﻛﻤﺎ ﻗﻤﻨﺎ ﺑﺈﺟ ﺮﺍء ﻣﺤﺎﻭﻻﺕ ﺃﺧﺮﻯ ﻻﺳﺘﻘﺒﺎﻝ ﺍﻛﺒﺮ ( ﻓﻴﺪﻻ ﻣﻦ ﺃﻥ ﺗﻜﻮﻥ 25dBﻛﺎﻧﺖ 35dBﺃﻯ ﺇﻥ ﺍﻟﻤﻜﺒﺮ ﻣﻮﺩﻳﻞ 001 MicroMATV pro ﻣﻦ ﻋﺪﺩ 6 ﻗﻨﻮﺍﺕ ﻭ ﻛﺎﻧﺖ ﺍﻟﻨﺘﺎﺋﺞ ﺑﻮﺍﺳﻄﺔ ﺭﺑﻂ ﻓﻰ ﻛﻞ ﺩﺭﺟﺔ 1.7dBﻭ ﻋﻤﻮﺍ ﻓﺎﻧﻪ ﻋﻤﻠﻴﺎ ﻫﺬﺍ ﻳﺄﺗﻰ ﻣﺰﻭﺩ ﺑﻮﺣﺪﺓ ﺗﺤﻜﻢ ﺧﺎﺭﺟﻴﺔ ﺗﺴﻤﺢ ﺑﺈﺟ ﺮﺍء ﻋﺪﺩ 2 ﻓﻠﺘﺮ ﻓﻰ ﻣﺪﺧﻞ ﻭﺍﺣﺪ ﻭ ﺗﻢ ﺿﺒﻂ ﺍﻟﻔﻠﺘﺮ ﺍﻷﻭﻝ ﺍﻻﺧﺘﻼﻑ ﻻ ﻳﻤﺜﻞ ﺃﻯ ﻣﺸﻜﻠﺔ ﻋﻤﻠﻴﺎ ، ﻟﻘﺪ ﻗﺎﻡ ﻋﻤﻠﻴﺎﺕ ﺍﻟﻀﺒﻂ ﻭ ﻣﺰﻭﺩ ﺑﻜﺎﺑﻞ ﻃﺎﻗﺔ 032 ﻓﻮﻟﺖ ﻋﻠﻰ ﺍﻟﻘﻨﻮﺍﺕ 62-12 ) 474 – 415 ( MHz ﺍﻟﺠﻬﺎﺯ ﺑﺘﻜﺒﻴﺮ ﺍﻟﺘﺮﺩﺩ ﺑﺸﻜﻞ ﺟﻴﺪ ﻣﺜﻞ ﻣﻮﺟﺔ ﺍﻝ ، ﺇﻥ ﺍﻟﻤﻜﺒﺮ ﺛﻘﻴﻞ ﺍﻟﻮﺯﻥ ﻭ ﻣﺼﻤﻢ ﻟﻜﻰ ﻳﺘﻢ ﺗﺮﻛﻴﺒﺔ ﻭ ﺍﻟﻔﻠﺘﺮ ﺍﻟﺜﺎﻧﻰ ﻟﻠﻘﻨﻮﺍﺕ 23-72 ) 255 – 265 ( MHzﻭ ﻣﻊ ﻫﺬﻩ ﺍﻟﻄﺮﻳﻘﺔ ﻗﺪ ﻳﺘﻮﻗﻊ ﺍﻟﺒﻌﺾ ﺍﻟﺤﺼﻮﻝ ﻋﻠﻰ ﺗﺮﺩﺩ ﻣﻔﺘﻮﺡ ﻣﻦ ﺍﻟﻘﻨﻮﺍﺕ 23-12 ) 265-474 ( MHzﻛﻤﺎ ﺗﺮﻯ ﻓﻰ ﺍﻟﺸﻜﻞ ﺭﻗﻢ 8 ﻭ ﻟﻜﻦ ﺍﺳﺘﺠﺎﺑﺔ ﺍﻟﺘﺮﺩﺩ ﻟﻢ ﻳﻜﻦ ﻣﻔﺘﻮﺡ ﺗﻤﺎﻣﺎ ﻣﻤﺎ ﻳﺴﺒﺐ ﺍﺧﺘﻼﻑ ﻓﻰ ﺗﻜﺒﻴﺮ ﺍﻟﻘﻨﻮﺍﺕ ﻭ ﻟﺤﺴﻦ ﺍﻟﺤﻆ ﻓﺎﻥ ﺍﻻﺧﺘﻼﻑ ﻟﻴﺲ ﻛﺒﻴﺮ ﻭ ﻻ ﻳﺠﺐ ﺃﻥ ﻳﺤﺪﺙ ﻣﺸﻜﻠﺔ ﻓﻰ ﺟﻬﺎﺯ ﺍﻟﺘﻠﻴﻔﺰﻳﻮﻥ ﻓﻰ ﺍﻟﺘﻌﺎﻣﻞ ﻣﻊ ﻫﺬﺍ ﺍﻻﺧﺘﻼﻑ ) ﺍﻟﺸﻜﻞ ﺭﻗﻢ 8 ( . ﻭ ﻃﺮﻳﻘﺔ ﺿﺒﻂ ﻣﻘﺪﺍﺭ ﺍﻟﻜﺴﺐ ﻓﻰ ﻣﺪﻯ UHF ﻟﻜﻞ 5 ﺩﺭﺟﺎﺕ ﻳﺘﻢ ﺗﻐﻴﻴﺮ ﺍﻟﻘﺪﺭﺓ ﺑﻤﻘﺪﺍﺭ 5 dB ﻭ ﺑﻌﻴﺪﺍ ﻋﻦ ﺍﻟﺘﺮﺩﺩﺍﺕ ﻭ ﺿﺒﻂ ﻗﺪﺭﺓ ﺍﻟﻜﺴﺐ ﻗﺪ ﻗﻤﻨﺎ ﺑﻌﻤﻞ ﺍﻟﻌﺪﻳﺪ ﻣﻦ ﺍﻟﻘﻴﺎﺳﺎﺕ ﻟﻘﻴﺎﺱ ﻣﺴﺘﻮﻯ ﺍﻟﻀﻮﺿﺎء ﺇﻟﻰ ﺍﻹﺷﺎﺭﺓ ﻭ ﻛﻠﻬﺎ ﻟﻢ ﺗﻮﺿﺢ ﺃﻯ ﻋﻠﻰ ﺍﻟﺤﺎﺋﻂ ﺩﺍﺧﻞ ﺍﻟﻤﻨﺰﻝ ﻭ ﻳﻌﻄﻰ ﺍﻧﻄﺒﺎﻋﺎ ﺍﻧﻪ FMﺑﻤﻘﺪﺍﺭ ) 20dB/8MHzﺍﻟﺸﻜﻞ ﺭﻗﻢ 3 ( ﺍﻧﺤ ﺮﺍﻑ ﻓﻰ ﻣﺴﺘﻮﻯ S/Nﺑﻴﻦ ﻣﺨﺮﺝ ﺍﻟﻤﻜﺒﺮ ﻭ ﻣﺘﻴﻦ ﺍﻟﺼﻨﻊ ﺣﻴﺚ ﺗﻢ ﺗﺼﻨﻴﻌﻪ ﺑﻄﺮﻳﻘﺔ ﺟﻴﺪﺓ ، . ﻭ ﻓﻰ ﻣﻮﺟﺎﺕ ( BIII ( 174 – 230 MHzﻛﺎﻧﺖ ﻣﺪﺧﻞ ﺍﻟﻤﻜﺒﺮ ﻭ ﺑﻬﺬﺍ ﻓﺎﻥ ﺍﻟﻤﻜﺒﺮ MicroMATV ﻭ ﻳﺄﺗﻰ ﻣﻊ ﺍﻟﻤﻜﺒﺮ ﻛﺘﻴﺐ ﺗﺸﻐﻴﻠﻰ ﻣﻜﺘﺐ ﺑﺎﻟﻠﻐﺔ ﻋﻤﻠﻴﺔ ﺍﻟﻀﺒﻂ ﻣﻄﺎﺑﻘﺔ ﻟﻠﻤﻮﺍﺻﻔﺎﺕ ﻓﻌﻨﺪ ﺍﻟﺘﻨﻘﻞ ﺑﻴﻦ 001 proﻣﻜﺒﺮ ﻳﻌﻤﻞ ﻋﻠﻰ ﺍﻟﺘﻜﺒﻴﺮ ﺑﻀﻮﺿﺎء 02 ﺩﺭﺟﺔ ﻟﻠﻀﺒﻂ ﻛﺎﻥ ﺍﻟﻤﻘﺪﺍﺭ 1dBﺗﻤﺎﻣﺎ ﺑﻤﻘﺪﺍﺭ ﺍﻷﺳﺒﺎﻧﻴﺔ ﻭ ﺍﻟﻔﺮﻧﺴﻴﺔ ﻭ ﺍﻹﻧﺠﻠﻴﺰﻳﺔ . ﻗﻠﻴﻠﺔ ، ﻭ ﺃﺛﻨﺎء ﺍﻻﺧﺘﺒﺎﺭ ﻋﻠﻰ ﺍﻟﻘﻨﻮﺍﺕ ﺍﻟﺘﻠﻴﻔﺰﻳﻮﻧﻴﺔ ) 10dB/8MHzﺍﻟﺸﻜﻞ ﺭﻗﻢ 4 ( . ﺍﻟﺤﻘﻴﻘﻴﺔ ﻟﻢ ﻳﺤﺪﺙ ﺃﻯ ﺗﺸﻮﻩ ﻓﻰ ﺍﻟﺼﻮﺭﺓ ﺃﻭ ﺃﻯ ﺿﻮﺿﺎء . ﻭ ﺑﻌﺪ ﻣﺎ ﺍﻧﺘﺎﺑﻨﺎ ﺷﻌﻮﺭ ﺑﺎﻟﺨﻮﻑ ﻣﻦ ﻋﺪﻡ ﺳﻬﻮﻟﺔ ﻭ ﻗﺒﻞ ﺍﻟﺒﺪء ﻓﻰ ﺍﻟﺘﻌﺎﻣﻞ ﻣﻊ ﻣﻮﺟﺎﺕ UHF ﻋﻤﻠﻴﺔ ﺍﻟﻀﺒﻂ ﻭ ﻟﻜﻦ ﻋﻤﻠﻴﺎ ﻛﺎﻧﺖ ﺍﻟﻨﺘﻴﺠﺔ ﻋﻜﺲ ﻗﻤﻨﺎ ﺑﻔﺤﺺ ﺍﻟﻤﺪﺧﻞ ﺍﻹﺿﺎﻓﻰ ) 86-74, -031 ﺫﻟﻚ ﻓﺎﻥ ﻭﺣﺪﺓ ﺍﻟﺘﺤﻜﻢ ﺃﺗﺖ ﺑﺸﺎﺷﺔ ﻛﺮﻳﺴﺘﺎﻝ ﺇﻥ ﺍﻟﻤﻜﺒﺮ MicroMATV proﺍﻟﻤﺰﻭﺩ ﻗﺪﺭﺓ 268 ( MHzﻭ ﻛﺎﻧﺖ ﻧﺘﻴﺠﺔ ﺗﺴﻄﻴﺢ ﺍﻟﺘﺮﺩﺩﺍﺕ ﺍﻟﺴﺎﺋﻞ ﺑﻌﺪﺩ 2 ﺳﻄﺮ ﻭ ﺑﻬﺎ ﻋﺪﺩ 5 ﺃﺯﺭﺍﺭ ﻭ ﻋﻠﻰ ﺿﺒﻂ ﻣﺴﺘﻮﻯ ﺍﻟﺘﻜﺒﻴﺮ ﻳﻮﺟﺪ ﺑﻪ ﻣﻴﺰﺓ ﺃﺧﺮﻯ ﻭ ﻣﻔﺎﺟﺌﺔ ﺳﺎﺭﺓ ﺍﻧﻈﺮ ﺍﻟﺸﻜﻞ ﺭﻗﻢ 5 ، ﻳﺠﺐ ﺃﻥ ﺗﻀﻊ ﺗﺴﺘﻐﺮﻕ ﻭﺣﺪﺓ ﺍﻟﺘﺤﻜﻢ ﺑﻀﻊ ﺩﻗﺎﺋﻖ ﻓﻘﻂ ﻟﻤﻌﺮﻓﺔ ﻫﻰ ﺇﻣﻜﺎﻧﻴﺔ ﺿﺒﻂ ﻗﺪﺭﺓ ﺍﻟﺘﻜﺒﻴﺮ ﺃﺗﻮﻣﺎﺗﻴﻜﻴﺎ AES ﻓﻰ ﺍﻋﺘﺒﺎﺭﻙ ﺃﻥ ﻣﻮﻟﺪ ﺍﻟﻀﻮﺿﺎء ﺍﻟﺬﻯ ﺍﺳﺘﺨﺪﻣﻨﺎﻩ ﻃﺮﻳﻘﺔ ﺍﺳﺘﺨﺪﺍﻣﻬﺎ . ﻭ ﻋﻨﺪ ﺗﺸﻐﻴﻠﻬﺎ ﺗﺤﺼﻞ ﻋﻠﻰ ﺍﺣﺴﻦ ﻗﺪﺭﺓ ﻛﺴﺐ ﻛﺎﻥ ﻳﻌﻄﻰ ca. 5 dBﻭ ﻟﻬﺬﺍ ﻓﺎﻥ ﺍﻟﻤﻜﺒﺮ ﻟﻜﻞ ﻣﻮﺟﺔ ﻭ ﻫﺬﻩ ﺍﻟﻄﺮﻳﻘﺔ ﻣﺮﻳﺤﺔ ﺟﺪﺍ ﻟﻠﻤﺴﺘﺨﺪﻡ ﺳﻮﻑ ﻳﺼﺪﺭ ﻣﻦ 1 ﺇﻟﻰ 2dBﺍﺧﺘﻼﻑ ﻓﻰ ﺩﺭﺟﺔ ﻭ ﻓﻰ ﺃﺛﻨﺎء ﺍﻻﺧﺘﺒﺎ ﺭﺍﺕ ﺍﺳﺘﺨﺪﻣﻨﺎ ﻣﻮﻟﺪ ، ﻭ ﻋﻠﻰ ﺍﻟﻘﺎﺋﻢ ﺑﺎﻟﺘﺮﻛﻴﺐ ﺍﺳﺘﺨﺪﺍﻡ ﺟﻬﺎﺯ ﻗﻴﺎﺱ ﺍﻻﺳﺘﺠﺎﺑﺔ ﻟﻠﻤﻮﺟﺔ ﻛﺎﻣﻼ ) ﺍﻟﺸﻜﻞ ﺭﻗﻢ 5 ( . ﺿﻮﺿﺎء 182- NGﻭ ﻣﺤﻠﻞ ﺍﻟﻄﻴﻒ -Prolink ﻣﺜﻞ ﻣﺤﻠﻞ ﺍﻟﻄﻴﻒ ﻟﻴﻘﺎﺱ ﻣﺴﺘﻮﻯ ﻣﺨﺮﺝ ﺍﻹﺷﺎﺭﺓ ﻟﻜﻞ ﻗﻨﺎﺓ ﺃﻭ ﻣﺠﻤﻮﻋﺔ ﻗﻨﻮﺍﺕ . 4c Premiumﻣﻦ ﺷﺮﻛﺔ PROMAXﻭ ﻭ ﻋﻨﺪﻣﺎ ﺍﻧﺘﻘﻠﻨﺎ ﺇﻟﻰ ﺍﻛﺜﺮ ﺍﻟﻤﺪﺍﺧﻞ ﺃﻫﻤﻴﺔ ﻭ ﻫﻰ ﺑﺎﻹﺿﺎﻓﺔ ﺇﻟﻰ ﺫﻟﻚ ﻗﻤﻨﺎ ﺑﺘﺠﺮﺑﺔ ﻋﻤﻞ ﺍﻟﻤﻜﺒﺮ ﻋﻠﻰ ﻗﻨﻮﺍﺕ ﺗﻠﻴﻔﺰﻳﻮﻧﻴﺔ ﻭ ﺇﺫﺍﻋﻴﺔ ﺣﻘﻴﻘﻴﺔ ﺑﺘﺮﺩﺩﺍﺕ ﻣﺪﺍﺧﻞ UHFﻛﺎﻧﺖ ﺃﻭﻝ ﻣﻼﺣﻈﺔ ﻟﺪﻳﻨﺎ ﻫﻰ ﻛﺎﻥ ﻭ ﻳﻤﻜﻦ ﻟﻠﻤﻜﺒﺮ ﺃﻥ ﻳﺘﻌﺮﻑ ﺃﺗﻮﻣﺎﺗﻴﻜﻴﺎ ﻋﻠﻰ ﺍﻟﻔﻠﺘﺮ ﻳﻌﻄﻰ ﻧﺘﺎﺋﺞ ﺃﺳﻮء ﻣﻦ ﺍﻟﺘﻰ ﺣﺼﻠﻨﺎ ﻋﻠﻴﻬﺎ ﻣﺨﺘﻠﻔﺔ . ﺍﻹﺷﺎ ﺭﺍﺕ ﺍﻟﺮﻗﻤﻴﺔ ﻭ ﻳﺤﺘﻔﻆ ﺑﻤﺴﺘﻮﺍﻫﺎ ﺑﻤﻘﺪﺍﺭ ﻓﻰ ﺍﻟﻤﺪﺍﺧﻞ ﺍﻷﺧﺮﻯ ﻫﻠﻰ ﺍﻟﺮﻏﻢ ﻣﻦ ﺃﻧﻬﺎ ﺟﻴﺪﺓ 15dBﺗﺤﺖ ﻣﺴﺘﻮﻯ ﺍﻟﻘﻨﻮﺍﺕ ﺍﻟﺘﻤﺎﺛﻠﻴﺔ ﻭ ﺑﻬﺬﺍ ﻭ ﻟﻘﺪ ﺑﺪﺃﻧﺎ ﺑﻤﻮﺟﺎﺕ FMﻛﻤﺎ ﻳﻤﻜﻨﻚ ﺭﺅﻳﺔ 17dB/8MHzﻭ ﺍﻟﻔﻠﺘﺮ ﺍﻟﺜﺎﻧﻰ 9dB/8MHz ﻳﻤﻜﻦ ﺍﺳﺘﻘﺒﺎﻝ ﻣﻮﺟﺎﺕ ﺍﻹﺭﺳﺎﻝ ﺍﻷﺭﺿﻴﺔ ﺍﻟﺘﻤﺎﺛﻠﻴﺔ ﺫﻟﻚ ﻓﻰ ﺍﻟﺸﻜﻞ ﺭﻗﻢ 2 ﻭ ﻟﻘﺪ ﻗﺎﻡ ﺍﻟﺠﻬﺎﺯ ﺑﺘﻜﺒﻴﺮ ﻭ ﻋﻨﺪ ﺿﺒﻂ ﺍﻟﻔﻠﺘﺮ ﻻﺳﺘﻘﺒﺎﻝ ﻗﻨﺎﺓ ﺃﻭ ﺍﺛﻨﻴﻦ ﻓﺎﻥ ﻭ ﺍﻟﺮﻗﻤﻴﺔ ﻭ ﺑﻬﺬﺍ ﻓﺎﻥ ﺷﺮﻛﺔ Fagorﻗﺪ ﻗﺪﻣﺖ ﺍﻟﺘﺮﺩﺩ ﺑﺸﻜﻞ ﺟﻴﺪ 25dB/8MHzﻭ ﻗﺪ ﻏﻄﻰ ﺩﺭﺟﺔ ﺍﺳﺘﺠﺎﺑﺔ ﺍﻟﺘﺮﺩﺩﺍﺕ ﺟﻴﺪﺓ ﺟﺪﺍ ﻭ ﻟﻜﻦ ﺃﺛﻨﺎء ﻣﻜﺒﺮ ﻳﺴﺘﻄﻴﻊ ﺍﻟﻌﻤﻞ ﻣﻊ ﻭﺳﺎﺋﻞ ﺍﻹﺭﺳﺎﻝ ﺍﻟﺤﺎﻟﻴﺔ ﺍﻟﻔﻠﺘﺮ ﺍﻟﻤﻮﺟﺔ 801-5.78 ) MHzﺍﻟﺸﻜﻞ ﺭﻗﻢ ﻋﻤﻠﻴﺔ ﺍﻟﻀﺒﻂ ﻻﺳﺘﻘﺒﺎﻝ ﻋﺪﺩ ﺍﻛﺒﺮ ﻛﺎﻥ ﻫﻨﺎﻙ ﺍﻟﺘﻤﺎﺛﻠﻴﺔ ﻭ ﺍﻟﺮﻗﻤﻴﺔ . ﻓﺠﻮﺓ ﺑﻴﻦ ﺍﻟﻤﻮﺟﺎﺕ ﺍﻟﺸﻜﻞ ﺭﻗﻢ 6 ﻳﻮﺿﺢ ﺿﺒﻂ 2(. ﺍﻟﻔﻠﺘﺮ ﻻﺳﺘﻘﺒﺎﻝ ﻗﻨﺎﺓ ﻭﺍﺣﺪﺓ ﻭ ﺍﻟﺸﻜﻞ ﺭﻗﻢ 7 ﻳﻮﺿﺢ ﻭ ﻳﻤﻜﻦ ﺍﻟﺘﺤﻜﻢ ﻓﻰ ﻗﺪﺭﺓ ﺍﻟﻜﺴﺐ ﺑﻌﺪﺩ 52 ﺿﺒﻂ ﺍﻟﻔﻠﺘﺮ ﻻﺳﺘﻘﺒﺎﻝ ﻋﺪﺩ 6 ﻗﻨﻮﺍﺕ ) ﺍﻟﺸﻜﻞ 6 ﺩﺭﺟﺔ ﻃﺒﻘﺎ ﻟﻠﻤﻮﺍﺻﻔﺎﺕ ، ﺇﻥ ﻣﺪﻯ ﻋﻤﻠﻴﺔ ﺍﻟﻀﺒﻂ ( ﻭ ) ﺍﻟﺸﻜﻞ 7 ( . ﻳﺠﺐ ﺃﻥ ﺗﻜﻮﻥ 25dBﻭ ﻟﻘﺪ ﻗﻤﻨﺎ ﺑﻘﻴﺎﺱ ﻫﺬﺍ ﻭ ﻭﺟﺪﻧﺎﻩ ﺍﻛﺒﺮ ﻗﻠﻴﻼ ﻋﻦ 28dBﺃﻯ ﻛﻞ ﺩﺭﺟﺔ ﻋﻨﺪ . 1dBﻭ ﻛﺎﻥ ﺍﻟﻔﺎﺭﻕ ﺑﻴﻦ ﺍﻟﻤﻮﺍﺻﻔﺎﺕ ﺍﻟﺨﺎﺻﺔ ﺑﺎﻟﺠﻬﺎﺯ ﻳﺰﺩﺍﺩ ﻋﻨﺪ ﻣﻮﺟﺎﺕ BI ( 47-68 MHz TELE-satellite International — www.TELE-satellite.com 43 34-35_38_fagor_ara_far+MOTECK.indd 42:33:51 6002.20.71
- 2. Fagor Electronicaﻳﺴﻤﻰ 4- DISATﻭ ( ( 87.5-108 MHzﻭ (BI ( 47-68MHz ﻣﻨﺘﺠﺎﺕ ﻣﺎ ﻳﺴﻤﻰ FAGOR MicroMATV ﺑﻬﺬﺍ ﻳﻤﻜﻦ ﺗﻮﺻﻴﻞ ﺇﺷﺎ ﺭﺍﺕ ﺍﻹﺭﺳﺎﻝ ﺍﻟﻔﻀﺎﺋﻰ ﺇﻟﻰ ﻭ ( BIII/DAB ( 174-230 MHzﻭ ﻋﺪﺩ 3 proﻣﻮﺩﻳﻞ 001, 100C, 200Cﻭ 300C ﻫﺬﺍ ﺍﻟﺠﻬﺎﺯ ، ﻛﻤﺎ ﻳﻤﻜﻦ ﺍﺳﺘﺨﺪﺍﻡ ﻫﺬﺍ ﺍﻟﻤﺪﺧﻞ ﻣﺪﺍﺧﻞ ( UHF ( 470 – 862 MHzﻭ ﻟﻸﺳﻒ ﻭ ﺗﺨﺘﻠﻒ ﻫﺬﻩ ﺍﻟﻤﻮﺩﻳﻼﺕ ﻓﻰ ﺇﻋﺪﺍﺩ ﻣﺪﺍﺧﻞ ﺍﻹﺿﺎﻓﻰ ﺑﺘﻮﺻﻴﻞ ﺇﺷﺎ ﺭﺍﺕ ﺃﺧﺮﻯ ﻟﻠﺘﻠﻔﺰﻳﻮﻥ ﻭ ﻓﺎﻥ ﻫﺬﺍ ﺍﻟﻤﻮﺩﻳﻞ ﻻ ﻳﻮﺟﺪ ﺑﻪ ﻣﺪﺧﻞ ﻹﺷﺎ ﺭﺍﺕ ﺍﻹﺷﺎ ﺭﺍﺕ ﻭ ﻗﺪﺭﺓ ﻭﻇﻴﻔﺔ ﺍﻟﺘﺤﻜﻢ ﻓﻰ ﺍﻟﻜﺴﺐ. ﺍﻟ ﺮﺍﺩﻳﻮ ) ﻛﻤﺜﺎﻝ ﻳﻤﻜﻦ ﺗﻮﺻﻴﻞ ﻣﺨﺮﺝ ﻣﻜﺒﺮ ﺁﺧﺮ ﺍﻹﺭﺳﺎﻝ ﺍﻟﻔﻀﺎﺋﻰ IF ( 950 – 2150 MHz MicroMATVﺍﻟﻰ ﺍﻟﺸﺒﻜﺔ ﺍﻟﺤﺎﻟﻴﺔ ( . ( ﻭ ﻟﻜﻦ ﻫﺬﺍ ﺍﻟﻤﺪﺧﻞ ﻣﺘﺎﺡ ﻓﻰ ﺍﻟﻤﻮﺩﻳﻞ 200C ﻭ ﻟﻘﺪ ﻗﻤﻨﺎ ﺑﺈﻟﻘﺎء ﻧﻈﺮﺓ ﻣﻘﺮﺑﺔ ﻋﻠﻰ ﻣﻮﺩﻳﻞ ﻭ 300Cﻭ ﻟﻜﻦ ﺍﻟﻤﻮﺩﻳﻞ ﺍﻟﺬﻯ ﻧﺨﺘﺒﺮﻩ ﻳﻮﺟﺪ ﺑﻪ 001 FAGOR MicroMATV proﻭ ﺑﻪ ﺍﻟﺸﻜﻞ ﺭﻗﻢ 1 ﻳﻮﺿﺢ ﻃﺮﻳﻘﺔ ﺍﻟﺘﻮﺻﻴﻞ ﺑﺄﻧﻈﻤﺔ ﻣﺪﺧﻞ ﺇﺿﺎﻓﻰ ﻳﻌﻤﻞ ﺑﻤﺪﻯ ) 86-74 , 031 – ﻳﻤﻜﻦ ﺗﻮﺻﻴﻞ ﺣﺘﻰ ﻋﺪﺩ 6 ﻫﻮﺍﺋﻴﺎﺕ ﻣﺨﺘﻠﻔﺔ ﺍﻟﻬﻮﺍﺋﻴﺎﺕ ﻻﺳﺘﻘﺒﺎﻝ ﺍﻹﺭﺳﺎﻝ ﺍﻷﺭﺿﻰ ﻭ ﻟﻴﺲ ﻓﻘﻂ 268 ( MHzﻳﺴﻤﺢ ﺑﺘﻮﺻﻴﻞ ﻣﻨﺘﺞ ﺁﺧﺮ ﻟﺸﺮﻛﺔ ﺑﻤﺪﺍﺧﻞ ﺇﺷﺎ ﺭﺍﺕ ﻟﻌﺪﻳﺪ ﻣﻦ ﺣﺰﻡ ﺍﻟﻤﻮﺟﺎﺕ : FM ﻳﻤﻜﻨﻚ ﺗﻮﺻﻴﻞ ﻋﺪﺩ ﻣﻦ ﺍﻟﻬﻮﺍﺋﻴﺎﺕ ﺇﻟﻰ ﺍﻟﻤﻜﺒﺮ ﻭ ﻟﻜﻦ ﺃﻳﻀﺎ ﻳﻤﻜﻦ ﺍﻟﺘﺤﻜﻢ ﻓﻰ ﺿﺒﻂ ﻣﺴﺘﻮﻯ ﺍﻟﺘﻜﺒﻴﺮ ﻟﻺﺷﺎ ﺭﺍﺕ ﻟﻜﻞ ﻣﺪﺧﻞ ﻭ ﻫﺬﺍ ﻟﻴﺲ ﻛﻞ Fig. 1. Exemplary antenna system ﺷﻰء ﺑﻞ ﺃﻳﻀﺎ ﻓﻰ ﺣﺎﻟﺔ ﻣﻮﺟﺎﺕ UHFﻓﻴﻮﺟﺪ ﺍﻟﻌﺪﻳﺪ ﻣﻦ ﺍﻟﻔﻼﺗﺮ ﻭ ﺍﻟﺘﻰ ﺗﻤﺮﺭ ﺟﺰء ﻓﻘﻂ ﻣﻦ ﺗﺮﺩﺩ UHFﻣﻦ 074 – 268 MHzﻭ ﺑﻬﺬﺍ ﻳﻤﻜﻦ ﺗﺤﺪﻳﺪ ﺟﺰء ﻣﻦ ﺍﻟﻤﻮﺟﺔ ﻻﺳﺘﻘﺒﺎﻟﻬﺎ ﻟﺘﻔﺎﺩﻯ ﻋﻤﻠﻴﺔ ﺍﻟﺘﺪﺍﺧﻞ . ﻓﻤﺜﻼ ﻳﻤﻜﻨﻚ ﺍﺳﺘﻘﺒﺎﻝ ﻗﻨﺎﺓ ﺗﻌﻤﻞ ﺑﻴﻦ ﺣﻴﺰ ﺗﺮﺩﺩﺍﺕ ﻣﻦ 52-02 ﻭ 73-63 ﺃﻭ 06-55 ﻣﻦ ﺃﻭﻝ ﻫﻮﺍﺋﻰ ﻳﻌﻤﻞ ﻋﻠﻰ ﺣﻴﺰ UHFﻭ ﺍﺧﺘﻴﺎﺭ ﺗﺮﺩﺩﺍﺕ 24-04 ﻭ 56-36 ﻣﻦ ﺍﻟﻬﻮﺍﺋﻰ ﺍﻟﺜﺎﻧﻰ ﺍﻟﺬﻯ ﻳﻌﻤﻞ ﻋﻠﻰ UHFﻭ ﺍﺧﺘﻴﺎﺭ ﺍﻟﺘﺮﺩﺩ ﻣﻦ -92 23 ﻋﻠﻰ ﺍﻟﻬﻮﺍﺋﻰ ﺍﻟﺜﺎﻟﺚ ﺍﻟﺬﻯ ﻳﻌﻤﻞ ﻋﻠﻰ UHF ﻭ ﻳﻌﻤﻞ ﺍﻟﻔﻠﺘﺮ ﻋﻠﻰ ﺍﻟﻤﺮﻭﺭ ﺧﻼﻝ ﻋﺮﺽ ﺍﻟﻤﻮﺟﺔ ﻟﻘﻨﺎﺓ ﻭﺍﺣﺪﺓ ﺑﻤﻘﺪﺍﺭ 8 MHzﺇﻟﻰ ﻋﺪﺩ 6 ﻗﻨﻮﺍﺕ ﺑﻤﻘﺪﺍﺭ 84 . MHz www.TELE-satellite.com — TELE-satellite International 53 34-35_38_fagor_ara_far+MOTECK.indd 42:33:51 6002.20.71
- 3. ﻣﻜﺒﺮ ﻭﺇﺷﺎﺭﺍﺕ ﻟﻨﻈﺎﻡ ﺍﺳﺘﻘﺒﺎﻝ ﺍﻹﺭﺳﺎﻝ ﺍﻷﺭﺿﻰ ﻣﻊ ﻭﺣﺪﺓ ﺗﺤﻜﻢ ﺧﺎﺭﺟﻴﺔ ﻋﻠﻰ ﺷﻜﻞ Fig. 2. FM input frequency Fig. 5. Auxiliary input frequency response response ﺳﻜﻴﻨﺔ ﺍﻟﺠﻴﺶ ﺍﻟﺴﻮﻳﺴﺮﻯ ﻋﻨﺪ ﺍﻟﻜﺘﺎﺑﺔ ﻋﻦ ﻧﻈﺎﻡ ﺍﻟﻬﻮﺍﺋﻴﺎﺕ ﻓﻰ ﻣﺠﻠﺔ ﺗﻴﻠﻰ ﺳﺘﻼﻳﺖ Fig. 3. BI input frequency Fig. 6. UHF filter set to one response channel bandwidth ﻓﻨﺤﻦ ﺩﺍﻣﺎ ﻧﻘﺼﺪ ﺍﻻﺳﺘﻘﺒﺎﻝ ﺍﻟﻔﻀﺎﺋﻰ ﻭ ﻟﻜﻦ ﺣﻴﺚ ﺃﻥ ﻣﻌﻈﻢ ﺍﻟﺬﻳﻦ ﻳﺴﺘﺨﺪﻣﻮﻥ ﺃﻧﻈﻤﺔ ﺍﺳﺘﻘﺒﺎﻝ ﺍﻷﻗﻤﺎﺭ ﺍﻟﺼﻨﺎﻋﻴﺔ ﻟﻢ ﻳﺘﺨﻠﻮﺍ ﺗﻤﺎﻣﺎ ﻋﻦ ﺍﺳﺘﻘﺒﺎﻝ ﺍﻹﺭﺳﺎﻝ ﺍﻷﺭﺿﻰ ﻓﻘﺪ ﺗﻜﻮﻥ ﻫﻨﺎﻙ ﻗﻨﺎﺓ ﺃﺭﺿﻴﺔ ﺟﻴﺪﺓ ﺗﺒﺚ ﻣﺠﺎﻧﺎ ﻣﻦ ﻣﺤﻄﺔ ﺃﺭﺿﻴﺔ ﻭ ﻗﺪ ﺗﻜﻮﻥ ﻫﺬﻩ ﺍﻟﻘﻨﺎﺓ ﻏﻴﺮ ﻣﺘﺎﺣﺔ ﻋﻠﻰ ﺍﻟﻘﻤﺮ ﺍﻟﺼﻨﺎﻋﻰ ) ﻣﺜﺎﻝ : ﻣﺤﻄﺔ ﺍﻷﺧﺒﺎﺭ ﺍﻟﻤﺤﻠﻴﺔ ( ﺍﻭ ﻗﻨﺎﺓ ﺗﺒﺚ ﻣﺠﺎﻧﺎ ﺿﻤﻦ ﺑﺎﻗﺔ ﻣﺸﻔﺮﺓ ، ﻛﻤﺎ ﺃﻥ ﻫﻨﺎﻙ ﻗﻨﻮﺍﺕ ﺭﻗﻤﻴﺔ ﺃﺭﺿﻴﺔ ﺟﺪﻳﺪﺓ ﺑﺪﺃﺕ ﻓﻰ ﺍﻟﻈﻬﻮﺭ . ﻭ ﺍﻋﺘﻤﺎﺩﺍ ﻋﻠﻰ ﺍﻟﻤﻜﺎﻥ ﺍﻟﺬﻯ ﺗﻌﻴﺶ ﻓﻴﻪ ﻳﻤﻜﻨﻚ ﺍﺳﺘﻘﺒﺎﻝ Fig.4. BIII/DAB frequency Fig. 7. UHF filter set to ﺍﻹﺭﺳﺎﻝ ﺍﻷﺭﺿﻰ ﺑﻮﺍﺳﻄﺔ ﻫﻮﺍﺋﻰ ) ﺍﺭﻳﺎﻝ ( ﻋﺎﺩﻯ ﺃﻭ ﺗﻘﻮﻡ response six channel bandwidth ﺑﺘﺮﻛﻴﺐ ﻋﺪﺩ ﻣﻦ ﺍﻟﻬﻮﺍﺋﻴﺎﺕ ﻋﻠﻰ ﺍﺗﺠﺎﻫﺎﺕ ﻣﺨﺘﻠﻔﺔ ﻭ ﻓﻰ ﺍﻟﺤﺎﻟﺔ ﺍﻟﺜﺎﻧﻴﺔ ﻳﺠﺐ ﺗﺠﻤﻴﻊ ﺇﺷﺎ ﺭﺍﺕ ﺍﻟﻬﻮﺍﺋﻴﺎﺕ ﺇﻟﻰ ﺩﺍﺧﻞ ﺇﺷﺎﺭﺓ ﻭﺍﺣﺪﺓ ﻭ ﺇﺭﺳﺎﻟﻬﺎ ﺇﻟﻰ ﺟﻬﺎﺯ ﺍﻟﺘﻠﻴﻔﺰﻳﻮﻥ ﻭ ﻓﻰ ﺍﻟﻤﻨﺰﻝ ﺍﻟﻌﺎﺋﻠﻰ ﻳﺘﻢ ﺗﻮﺯﻳﻊ ﻫﺬﻩ ﺍﻹﺷﺎ ﺭﺍﺕ ﺇﻟﻰ ﺍﻟﻌﺪﻳﺪ ﻣﻦ ﺍﻟﻐﺮﻑ ﻭ ﻓﻰ ﺍﻟﻤﺒﺎﻧﻰ ﻳﺘﻢ ﺗﻮﺯﻳﻊ ﺍﻹﺷﺎ ﺭﺍﺕ ﺇﻟﻰ ﺍﻟﻌﺪﻳﺪ ﻣﻦ ﺍﻟﺸﻘﻖ . ﻭ ﻏﺎﻟﺒﺎ ﻓﺎﻥ ﻋﻤﻠﻴﺔ ﺗﺠﻤﻴﻊ ﺍﻹﺷﺎ ﺭﺍﺕ ﻣﻦ ﻫﻮﺍﺋﻴﺎﺕ ﻣﺨﺘﻠﻔﺔ ﻭ ﺩﻣﺠﻬﺎ ﻣﻌﺎ ﻳﺘﻢ ﻣﻦ ﺧﻼﻝ ﺟﻬﺎﺯ ﻣﻜﺒﺮ ، ﻣﻮﺯﻉ ﻭ ﻓﻠﺘﺮ ﻭ ﻟﻜﻦ ﺃﻯ ﻧﻮﻉ ﻣﻦ ﺃﻧﻮﺍﻉ ﺍﻷﺟﻬﺰﺓ ﻳﺠﺐ ﺍﺳﺘﺨﺪﺍﻣﻪ ﻭ ﻛﻴﻒ ﺗﻘﻮﻡ Fig. 8. Interaction between two adjoining 6-channel wide filters ﺑﺘﻮﺻﻴﻞ ﻫﺬﻩ ﺍﻷﺟﻬﺰﺓ ﻣﻌﺎ ﻭ ﻟﻜﻦ ﻫﺬﻩ ﺍﻟﻤﺸﻜﻠﺔ ﻻ ﻭﺟﻮﺩ ﻟﻬﺎ TECHNICAL ﻋﻨﺪ ﺍﺳﺘﺨﺪﺍﻣﻚ ﺍﻟﺠﻬﺎﺯ ﺍﻟﻤﻜﺒﺮ ﺍﻟﺬﻯ ﻳﻤﻜﻦ ﺑﺮﻣﺠﺘﻪ ﺍﻟﻤﻘﺪﻡ DATA Manufacturer ,Fagor Electronica, S.Coop., San Andres ﻣﻦ ﺍﻟﺸﺮﻛﺔ ﺍﻷﺳﺒﺎﻧﻴﺔ . Fagor Electronica Mondragon, Spain www.fagorelectronica.es ﻭ ﻛﺎﻥ ﺃﻭﻝ ﺇﻧﺘﺎﺝ ﻟﻬﺬﻩ ﺍﻟﺸﺮﻛﺔ ﻇﻬﺮ ﻓﻰ ﺍﻷﺳﻮﺍﻕ ﻛﺎﻥ ﻋﺎﻡ E-mail [email protected] 2991 ﻭ ﻣﻨﺘﺠﺎﺕ ﺍﻟﺸﺮﻛﺔ ﺍﻵﻥ ﻫﻰ ﻣﻦ ﺍﻟﺠﻴﻞ ﺍﻟﺜﺎﻟﺚ ، ﺇﻥ Phone 625217 34 43+ ﺷﺮﻛﺔ Fagor Electronicaﺗﻘﻮﻡ ﺑﺘﺼﻤﻴﻢ ﻭ ﺗﺼﻨﻴﻊ ﻋﺎﺋﻠﺔ Fax 398217 34 43+ Model 001 MicroMATV pro Description Programmable Selective Amplifier ﺗﻌﻠﻴﻖ ﺍﻟﺨﺒﺮﺍء Inputs FM, BI, BIII/DAB, AUX, 3xUHF Number of programmable 01 ﺍﻹﻳﺠﺎﺑﻴﺎﺕ amplifiers/filters in UHF band ﻣﻜﺒﺮ ﻣﺘﻌﺪﺩ ﺍﻻﺳﺘﻌﻤﺎﻻﺕ ، ﻳﺤﻞ ﻣﺤﻞ Programmable filter bandwidth )8 - 48 MHz (1-6 channels ﺍﻟﻌﺪﻳﺪ ﻣﻦ ﺍﻟﻔﻼﺗﺮ ﻭ ﺍﻟﻤﻜﺒﺮﺍﺕ ﻭ ﺍﻟﻤﺠﻤﻊ Maximum gain )23-53 dB (depending on band Peter Miller ﻟﻺﺷﺎﺭﺍﺕ ، ﺳﻬﻞ ﺍﻟﺒﺮﻣﺠﺔ ، ﺑﻪ ﻭﻇﻴﻔﺔ TELE-satellite Input adjustment )23-25 dB (depending on band Test Center ﺿﺒﻂ ﻣﺴﺘﻮﻯ ﻗﺪﺭﺓ ﺍﻟﻜﺴﺐ ﺃﺗﻮﻣﺎﺗﻴﻜﻴﺎ ، Poland Output adjustment )20-25 dB (depending on band ﻣﻨﺨﻔﺾ ﺍﻟﻀﻮﺿﺎء . Noise factor )6-8 dB (depending on band ﺍﻟﺴﻠﺒﻴﺎﺕ Output level 116 dBµV (DIM –35dBc) for FM 121 dBµV (DIM –60dBc) for other bands ﺍﺧﺘﻼﻑ ﺣﺴﺎﺳﻴﺔ ﺿﺒﻂ ﻗﺪﺭﺓ ﺍﻟﻜﺴﺐ ) ﺩﻳﺴﻴﺒﻞ ﻟﻜﻞ Power supply %51± 230 Vac ﺩﺭﺟﺔ ( ﻓﻰ ﺍﻟﻌﺪﻳﺪ ﻣﻦ ﺍﻟﻤﻮﺟﺎﺕ . Ambient temperature 0-50ºC TELE-satellite International — www.TELE-satellite.com 83 34-35_38_fagor_ara_far+MOTECK.indd 62:33:51 6002.20.71