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He aha te mea o te kaupapa matua o te kaapene reo irirangi FM?

He maha nga rereketanga o te Kaihuri FM a Digital FM.

Mo te poto, ka whakamahia e te Kaihoko FM Analog te hangarau hangarau VCO + PLL, engari ko te Digital FM Whakawhiti te whakamahi i te hangarau hangarau irirangi rorohiko ahokore DSP + DDS, te hoahoa penei i raro nei:

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Kaupapa Mahi:

Kei roto i te Mamati FM FM nga waahanga 6 o te waahanga: Huringa Whakauru Tohu Ororongo; Huringa Tohu Maatauranga Tohu Mamati; Digital FM Tauira me te Band Pass Filter Tātari; Huaputa mana whakaputa me te iti-pass kōwae tātari; Tihi Tauhokohoko-Whakahoahoa tangata-Tahi me te waahanga Tauhokohoko me te Taha Taha & Paahi Taha.

Huringa Whakauru Tohu Ororongo: Ka whiwhi i te tohu whakaurunga oro me te oro mamati (AES / EBU). Ko te huringa oro whakahoahoa ka huri ki te oro mamati na (A / D) ka whakauruhia, ka whakauru a DSP. Ka mau tonu te tāuru oro ā-mati DSP. Ka tohua e te DSP te tohu ka taea te tohu oro whakauru.

Huringa Tapaahinga Tapa Mamati: Koinei te waahanga matua ki te Exciter / Whakawhiti, ko te mahi he nui te mahinga 550MHz pungarererangi tohu mamati (DSP), ka taea te whakahaere ma tenei DSP e te raupaparorohiko me te tukatuka tohu tohu oro a-a-ringa kia puta ai te whakatikatika; tātari mamati; mua-whakatuturu; ka puta nga paerongo a-mati; tohu hiko stereo mamati, katahi ka waihangatia te rerenga tohu hiko whakaata, i muri i te mahi matawharau, ka rere te rerenga ki te rerenga baseband FM tuuturu, ka puta te tohu rererangi a FM, ka tukuna tenei tohu rere ki te 1000MHz Direct Digital Synthesizer (DDS) , ka hurihia ki FM RF Signal.

Tauwehe FM Mamati me te Pae Whiriwhiria Taonga: Ko te matua o tenei kohinga ko te Digital Synthesizer Digital (DDS), ka whiwhi i te tohu rererangi a FM mai i te DSP, a ka haangai ki te tohu RF FM mamati na roto i te taahiraa inamata tika a te roopu, ona ahuru ā-roto / Ka taea e te kaitahuri taapiri te waihanga i te tohu hangarua a te FM FM, ka tae mai te tohu RF FM parakore mai i te Tae-pass Tātari.

Huaputa mana whakaputa me te iti-pass kōwae tātari: Ko tenei kōwae ka katia te Aunoa Tauhokohoko Tauhokohoko (AGC) FM RF mana whakahoahoa me te paahitanga tātari-iti. Ka taea e ia te whakarite kia pumau te mana whakaputa i te waa mahi roa.

Atanga Miihini Tauhokohoko-tangata & Whakahoahoa Whakawhitinga: Ma te whakamahi i tenei waeine kotahi te Pūnaha-i runga-a-Chip (SOC) ki te tukatuka i te Whakawhiti me te Kaituku-a-Maama Kohikohinga raraunga whakahaere; Paruru whakaohooho; Te whakawhitiwhiti korero me etahi atu mahi. Ko nga raupapa whakahaere he whakauru ma te paatene; Mata LCD me te whakaaturanga marama te Tuku Whakawhiti. Ka taea e ia te whakamahi i te rorohiko whakawhiti RS232 / RS485 / CAN / TCPIP te hono atu ki te PC mamao mo te tuku raraunga me te mahinga mamao.

Te Taha Whakarau me te Pahi Whakatika: ka tohaina e ia te mana hiko uuru DC mo ia waahanga mahi i Te Kaihuri.

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