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  3. Antenna Tuning Unit

Antenna Tuning Unit

Lub kav hlau txais xov Tuning Unit (ATU) yog ib qho khoom siv hluav taws xob siv los ua kom haum rau lub impedance ntawm lub kav hlau txais xov rau lub transmitter lossis receiver. Lub impedance ntawm lub kav hlau txais xov muaj peev xwm sib txawv nyob ntawm seb yam xws li qhov zaus ntawm kev ua haujlwm, qhov ntev ntawm lub kav hlau txais xov, thiab ib puag ncig ib puag ncig.

 

ATU pab txhim kho qhov ua tau zoo ntawm lub kav hlau txais xov los ntawm kev kho cov impedance kom haum rau qhov xav tau ntau zaus. Qhov no yog ua tiav los ntawm kev siv cov capacitors adjustable, inductors, los yog ob qho tib si los kho cov hluav taws xob ntev ntawm lub kav hlau txais xov.

 

Saib peb 10kW AM transmitter ntawm qhov chaw tsim kho video series hauv Cabanatuan, Philippines:

 

 

Qee lub ntsiab lus rau Antenna Tuning Unit (ATU) suav nrog:

 

  • Kav hlau txais xov Matcher
  • Kav hlau txais xov Tuner
  • Impedance Match Unit
  • Kav hlau txais xov Coupler
  • Kav hlau txais xov Matching Network
  • SWR tuner lossis SWR choj (cov no xa mus rau qee hom ATUs uas ntsuas qhov ntsuas qhov ntsuas qhov ntsuas qhov ntsuas).

 

Feem ntau, ATU nyob nruab nrab ntawm lub transmitter lossis receiver thiab kav hlau txais xov. Thaum lub kaw lus qhib, ATU tuaj yeem siv los "tune" tus kav hlau txais xov mus rau qhov xav tau ntau zaus. Qhov no yog ua los ntawm kev kho cov khoom nyob rau hauv ATU kom txog rau thaum lub impedance ntawm lub kav hlau txais xov sib phim lub impedance ntawm lub transmitter los yog receiver.

 

ATUs tau siv ntau yam kev siv, suav nrog kev sib txuas lus hauv xov tooj cua, tshaj tawm hauv TV, thiab kev sib txuas lus satellite. Lawv muaj txiaj ntsig tshwj xeeb tshaj yog nyob rau hauv cov xwm txheej uas lub kav hlau txais xov tsis yog tsim los rau qhov tshwj xeeb zaus siv, xws li hauv cov khoom siv txawb lossis cov khoom siv txawb.

 

Zuag qhia tag nrho, ATU yog ib qho tseem ceeb hauv txhua lub kav hlau txais xov, vim nws pab kom ua tau zoo tshaj plaws thiab ua haujlwm tau zoo.

Cov qauv ntawm lub kav hlau txais xov tuning yog dab tsi?
Lub kav hlau txais xov Tuning Unit (ATU) tuaj yeem muaj cov qauv sib txawv nyob ntawm tus qauv tsim thiab daim ntawv thov, tab sis lawv feem ntau muaj kev sib xyaw ua ke ntawm cov khoom hauv qab no:

1. Capacitor: Cov no yog siv los kho qhov capacitance ntawm ATU Circuit Court, uas tuaj yeem hloov qhov resonance zaus ntawm tag nrho Circuit Court.

2. Inductors: Cov no yog siv los kho qhov inductance ntawm ATU Circuit Court, uas tuaj yeem hloov pauv qhov zaus resonance ntawm tag nrho Circuit Court.

3. Variable Resistor: Cov no yog siv los kho qhov tsis kam ntawm lub voj voog, uas tuaj yeem cuam tshuam rau qhov resonance zaus ntawm Circuit Court.

4. Transformers: Cov Cheebtsam no tuaj yeem siv los ua cov kauj ruam nce lossis nqis nqis ntawm qhov impedance ntawm lub kav hlau txais xov kom phim cov impedance ntawm lub transmitter lossis receiver.

5. Relays: Cov no yog siv los txuas lossis txiav cov khoom sib txuas hauv ATU Circuit Court, uas tuaj yeem muaj txiaj ntsig zoo rau kev hloov ntawm ntau zaus bands.

6. Circuit Board: Lub Cheebtsam ntawm ATU tej zaum yuav raug ntsia rau ntawm lub rooj tsavxwm Circuit Court kom yooj yim rau kev sib dhos.

Kev sib xyaw tshwj xeeb ntawm cov khoom siv tuaj yeem sib txawv nyob ntawm qhov xav tau ntawm daim ntawv thov, qhov xav tau ntau zaus, qhov chaw muaj, thiab lwm yam uas yuav cuam tshuam rau kev tsim. Lub hom phiaj ntawm ATU yog kom phim lub impedance ntawm lub kav hlau txais xov system mus rau lub transmitter los yog receiver, thiaj li yuav ua tau siab tshaj lub hwj chim hloov thiab teeb liab zoo.
Vim li cas kav hlau txais xov tuning unit tseem ceeb rau kev tshaj tawm?
Lub kav hlau txais xov tuning unit (ATU) xav tau rau kev tshaj tawm vim tias nws yuav pab txhim kho kev ua haujlwm ntawm lub kav hlau txais xov, uas yog qhov tseem ceeb rau kev ua tiav cov teeb liab zoo thiab txais tos. Cov kav hlau txais xov tshaj tawm feem ntau yuav tsum tau ua haujlwm dhau ntawm ntau zaus, uas tuaj yeem ua rau lub impedance ntawm tus kav hlau txais xov sib txawv. Qhov no yog qhov tseeb tshwj xeeb rau kev tshaj tawm xov tooj cua, qhov twg txawm tias me me tsis sib haum xeeb hauv impedance tuaj yeem ua rau muaj teeb meem loj.

Los ntawm kev kho cov khoom ntawm ATU, xws li cov capacitors, inductors, thiab transformers, impedance ntawm tus kav hlau txais xov tuaj yeem ua kom zoo kom haum rau qhov sib txawv ntawm lub transmitter lossis receiver. Qhov no tuaj yeem pab txo qis cov teeb liab poob thiab xyuas kom cov khoom xa tawm tau zoo, meej meej rau cov neeg mloog lossis cov neeg saib.

Rau qhov chaw tshaj tawm xov xwm tshaj lij, qhov zoo tshaj plaws ATU yog qhov tseem ceeb tshwj xeeb vim nws feem ntau yog siv los xa cov teeb liab hla kev deb thiab muaj lub zog siab. Ib qho kev tsim tsis zoo lossis tsim tsis zoo ATU tuaj yeem qhia ntau yam teeb meem uas tuaj yeem cuam tshuam qhov kev ua tau zoo ntawm kev tshaj tawm, suav nrog cov teeb liab distortion, cuam tshuam, thiab txo cov teeb liab lub zog.

ATU zoo tshaj plaws tsim tshwj xeeb rau kev tshaj tawm feem ntau yog tsim los tiv thaiv ib puag ncig hnyav, tuaj yeem kho tau thoob plaws ntau qhov ntau zaus, thiab tsim nrog cov khoom zoo uas tau xaiv rau lawv cov kav ntev thiab kev ua haujlwm. Qhov no tuaj yeem pab xyuas kom meej tias cov teeb liab tshaj tawm muaj zog thiab meej li sai tau, txawm tias muaj teeb meem nyuaj.
Dab tsi yog cov khoom siv ntawm cov kav hlau txais xov tuning?
Kav hlau txais xov tuning units (ATUs) muaj ntau yam kev siv hauv tshuab hluav taws xob thiab kev sib txuas lus. Qee qhov kev siv ntau tshaj yog:

1. Xov tooj cua sib txuas lus: ATUs feem ntau siv hauv kev sib txuas lus hauv xov tooj cua ua haujlwm kom phim qhov impedance ntawm tus kav hlau txais xov mus rau lub transmitter lossis receiver thoob plaws ntau zaus. Qhov no yuav pab txhim kho cov teeb liab zoo thiab txo cov teeb liab poob.

2. Kev Tshaj Tawm Hauv TV: Hauv kev tshaj tawm hauv xov tooj cua, ATUs tau siv los ua kom haum rau qhov impedance ntawm tus kav hlau txais xov tshaj tawm mus rau lub transmitter. Qhov no ua kom lub teeb liab xa nrog lub zog siab tshaj plaws thiab meej meej rau cov neeg saib.

3. Kev Tshaj Tawm FM: ATUs kuj tau siv hauv FM tshaj tawm kom phim qhov impedance ntawm tus kav hlau txais xov mus rau lub transmitter, tshwj xeeb tshaj yog nyob rau hauv cov xwm txheej uas qhov zaus tshaj tawm tsis yog qhov tseeb ntau yam ntawm tus kav hlau txais xov resonant zaus. Qhov no yuav pab txo cov teeb liab poob thiab txhim kho cov teeb liab zoo.

4. AM Broadcasting: Hauv AM tshaj tawm, ATU yog siv los ua kom haum rau qhov impedance ntawm lub kav hlau txais xov rau lub transmitter, uas yuav pab txo cov teeb liab distortion thiab ua kom lub teeb liab muaj zog.

5. Kev sib txuas lus dav hlau: Hauv kev sib txuas lus hauv dav hlau, ATUs feem ntau siv los ua kom zoo dua qhov kev ua tau zoo ntawm cov kav hlau txais xov onboard kom pom kev sib kis thiab txais tos.

6. Kev Sib Txuas Lus Tub Rog: ATUs kuj tseem siv rau hauv kev sib txuas lus tub rog kom phim qhov impedance ntawm tus kav hlau txais xov mus rau lub transmitter lossis receiver, uas pab txhim kho cov teeb liab zoo thiab txo cov teeb liab poob.

7. Kev sib txuas lus txawb: ATUs yog siv hauv kev sib txuas lus hauv xov tooj ntawm tes xws li xov tooj ntawm tes thiab wireless routers kom phim lub impedance ntawm tus kav hlau txais xov mus rau lub transmitter. Qhov no pab txhim kho cov teeb liab zoo thiab txo qis zog poob.

8. RFID: Hauv xov tooj cua zaus txheeb xyuas (RFID), ATUs tuaj yeem pab txhim kho kev ua haujlwm ntawm tus kav hlau txais xov los ntawm kev sib piv nws cov impedance rau RFID nyeem ntawv.

9. Wireless Sensor Networks: Hauv wireless sensor tes hauj lwm (WSNs), ATUs tuaj yeem siv los ua kom haum cov impedance ntawm cov sensor nodes rau wireless network, uas tuaj yeem txhim kho cov teeb liab zoo thiab txo qis kev siv hluav taws xob.

10. Tej thaj chaw deb hnov: Nyob rau hauv tej thaj chaw deb sensing daim ntaub ntawv, ATUs yog siv kom phim lub impedance ntawm lub kav hlau txais xov kom tau txais cov teeb liab los ntawm satellites los yog lwm yam tej thaj chaw deb sensing cov cuab yeej nrog siab rhiab heev thiab raug.

11. Xov tooj cua: Ntxiv nrog rau kev sib txuas lus hauv xov tooj cua, ATUs feem ntau siv hauv xov tooj cua ham rau kev lag luam lossis kev lag luam hauv kev ua haujlwm nyuaj uas cov kav hlau txais xov impedance yuav txawv heev.

12. Ob-txoj kev xov tooj cua: ATUs kuj tseem siv nyob rau hauv ob-txoj kev xov tooj cua tshuab rau kev lag luam xws li kev nyab xeeb rau pej xeem, kev thauj mus los, thiab kev ruaj ntseg los txhim kho kev ua tau zoo ntawm cov kav hlau txais xov hauv ntau qhov chaw kom paub meej thiab txhim khu kev sib txuas lus.

13. Kev Tshawb Fawb Txog Kev Tshawb Fawb: ATUs yog siv rau hauv kev tshawb fawb tshawb fawb los ntsuas thiab tswj cov electromagnetic teb nyob rau hauv ntau yam kev sim.

Feem ntau, cov ntawv thov ntawm ATUs tau dav thiab suav nrog txhua qhov xwm txheej uas yuav tsum tau muaj lub teeb liab zoo. ATUs tuaj yeem phim qhov impedance ntawm tus kav hlau txais xov rau lub transmitter lossis receiver, tso cai rau kev pom zoo ntawm cov teeb liab kis tau tus mob thiab txais tos, qhia txog qhov tseem ceeb ntawm kev sib piv cov impedance ntawm tus kav hlau txais xov mus rau lub transmitter lossis receiver rau kev pom cov teeb liab kis tau tus mob thiab txais tos hauv ntau qhov sib txawv thiab cov xwm txheej. .
Yuav ua li cas muaj ib tug kav hlau txais xov tag nrho nrog rau kav hlau txais xov tuning unit?
Txhawm rau tsim kom muaj lub kav hlau txais xov ua tiav rau lub chaw nres tsheb xov tooj cua, cov khoom siv sib txawv thiab cov khoom yuav tsum tau ua, nyob ntawm seb hom kev tshaj tawm (UHF, VHF, FM, TV, lossis AM). Nov yog qee qhov tseem ceeb ntawm cov kav hlau txais xov tshaj tawm:

1. Transmitter: Nws yog ib qho khoom siv hluav taws xob siv los tsim cov xov tooj cua hloov pauv zaus (RF) teeb liab thiab xa mus rau lub kav hlau txais xov, uas tom qab ntawd xa mus rau cov neeg mloog lossis cov neeg saib.

2. Kav hlau txais xov: Nws yog ib qho khoom siv uas hloov hluav taws xob hluav taws xob rau hauv hluav taws xob (xov tooj cua) nthwv dej uas tuaj yeem taug kev los ntawm huab cua thiab tau txais los ntawm cov xov tooj cua. Tus tsim ntawm lub kav hlau txais xov yog nyob ntawm qhov ntau zaus, theem fais fab, thiab hom kev tshaj tawm.

3. Coaxial Cable: Nws yog siv los txuas lub transmitter mus rau lub kav hlau txais xov thiab xyuas kom muaj kev hloov pauv ntawm lub teeb liab nrog qhov tsawg kawg nkaus poob thiab impedance txuam.

4. Kav hlau txais xov Tuning Unit (ATU): Nws yog siv los phim lub impedance ntawm tus kav hlau txais xov mus rau lub transmitter los yog receiver. ATU yog qhov tshwj xeeb tshaj yog nyob rau hauv rooj plaub uas tus kav hlau txais xov impedance txawv ntawm ntau zaus, raws li nws sib npaug kev sib txuas los txhim kho kev ua haujlwm thiab hloov hluav taws xob.

5. Combiner/Div: Hauv kev tshaj tawm xov xwm nrog ntau lub tshuab xa hluav taws xob lossis cov teeb liab, cov khoom sib txuas / sib faib tau siv los ua ke ntau lub teeb liab rau hauv ib qho rau kev sib kis ntawm ib lub kav hlau txais xov.

6. Ntauwd: nws yog cov qauv hlau siab uas txhawb nqa lub kav hlau txais xov thiab nws cov khoom siv sib txuas.

7. Kis kab / Feeder: Nws yog ib lub xaim lossis cable uas txuas lub kav hlau txais xov mus rau lub transmitter lossis receiver, xa cov teeb liab los ntawm tus kav hlau txais xov mus rau lub transmitter / receiver yam tsis muaj kev cuam tshuam lossis cuam tshuam.

8. Kev tiv thaiv xob laim: Kav hlau txais xov systems muaj kev cuam tshuam rau xob laim puas, uas tuaj yeem ua rau raug nqi ntau dua. Yog li ntawd, xob laim tiv thaiv kab ke yog qhov tseem ceeb los tiv thaiv lub kaw lus los ntawm kev puas tsuaj thaum muaj cua daj cua dub.

9. Cov khoom siv saib xyuas thiab ntsuas: Cov teeb liab kis tau tuaj yeem raug soj ntsuam nrog kev pab ntawm ntau yam kev soj ntsuam thiab ntsuas cov cuab yeej, suav nrog spectrum analyzers, oscilloscopes, thiab lwm yam khoom siv ntsuas teeb liab. Cov cuab yeej no xyuas kom meej tias lub teeb liab ua tau raws li cov qauv kev cai thiab kev tswj hwm.

Hauv kev xaus, cov no yog qee yam ntawm cov khoom siv uas xav tau los tsim kom tiav lub kav hlau txais xov. Hom khoom siv thiab kev teeb tsa ntawm lub kav hlau txais xov yog txiav txim siab los ntawm cov kev xav tau tshwj xeeb tshaj tawm, suav nrog ntau zaus, qib zog, thiab hom kev tshaj tawm.
Muaj pes tsawg hom kav hlau txais xov tuning unit muaj?
Muaj ntau hom kav hlau txais xov tuning units (ATUs) muaj rau siv hauv xov tooj cua tshaj tawm thiab lwm yam kev siv. Cia peb tham txog qee yam ntawm lawv raws li lawv hom thiab lawv cov khoom:

1. L-Network Kav hlau txais xov Tuner: L-network kav hlau txais xov tuner yog raws li ib qho yooj yim Circuit Court uas siv ob lub capacitors thiab inductor kom phim lub impedance ntawm tus kav hlau txais xov mus rau lub transmitter lossis receiver. L-network ATUs yooj yim rau kev tsim thiab siv, kuj pheej yig, thiab muab cov qib siab ntawm kev hloov pauv raws li qhov sib piv impedance. Txawm li cas los xij, lawv muaj kev ua haujlwm tsawg ntawm cov zaus ntau zaus, thiab cov Circuit Court tuaj yeem ua haujlwm nyuaj rau kev tsim.

2. T-Network kav hlau txais xov Tuner: T-network kav hlau txais xov tuners zoo ib yam li L-network ATUs tab sis siv peb lub ntsiab lus capacitance nrog rau tus inductor los tsim 2: 1 impedance match. T-network ATUs muab kev ua tau zoo ntawm cov zaus ntau dua li L-network ATUs, tab sis lawv kim dua thiab nyuaj rau kev tsim.

3. Pi-Network Antenna Tuner: Pi-network kav hlau txais xov tuners siv peb lub capacitors thiab ob lub inductors los tsim 1.5: 1 impedance match. Lawv muab kev ua tau zoo nyob rau hauv ntau qhov ntau zaus thiab muab kev sib tw zoo dua thaum piv rau L-network thiab T-network ATUs. Txawm li cas los xij, lawv kim dua L-network thiab T-network ATUs.

4. Gamma Match Tuner: Gamma match tuners siv gamma match los kho qhov pub taw tes impedance ntawm tus kav hlau txais xov kom phim cov kev xav tau ntawm lub transmitter lossis receiver. Lawv ua tau zoo heev, thiab qhov sib txuam network yog yooj yim rau kev tsim, nrog me me los yog tsis poob rau lub teeb liab. Txawm li cas los xij, lawv tuaj yeem kim los tsim.

5. Balun Tuner: Balun tuners siv lub balun transformer los sib npaug qhov impedance ntawm tus kav hlau txais xov mus rau qhov xav tau ntawm lub transmitter lossis receiver. Lawv muab cov impedance zoo sib xws thiab muaj txiaj ntsig zoo, tsis muaj lossis tsawg. Txawm li cas los xij, lawv tuaj yeem kim rau nruab thiab tswj.

6. Nws pib-Tuner/Smart Tuner: Nws pib-tuner lossis ntse tuner siv lub microprocessor los kho qhov sib txuam network tau los ntawm kev ntsuas qhov impedance ntawm tus kav hlau txais xov hauv lub sijhawm tiag tiag, ua rau lawv yooj yim siv. Lawv muaj kev ua tau zoo nyob rau hauv ntau qhov ntau zaus, tab sis lawv tuaj yeem kim kim thiab xav tau lub zog los ua haujlwm.

7. Reactance Tuner: Reactance tuners siv lub capacitor sib txawv thiab inductor los kho qhov impedance ntawm lub kav hlau txais xov. Lawv yog cov yooj yim thiab tus nqi qis tab sis tej zaum yuav tsis haum rau kev siv hluav taws xob siab.

8. Duplexer: Lub duplexer yog ib qho cuab yeej siv los tso cai rau tib lub kav hlau txais xov siv rau kev sib kis thiab txais. Lawv feem ntau siv hauv kev sib txuas lus hauv xov tooj cua, tab sis lawv tuaj yeem kim thiab xav tau kev txhim kho.

9. Transmatch Kav hlau txais xov Tuner: Transmatch tuners siv high-voltage variable capacitor thiab inductor kom phim lub transmitter cov zis rau lub kav hlau txais xov system. Lawv muaj txiaj ntsig zoo, tab sis cov khoom siv hluav taws xob muaj peev xwm yuav kim heev los tsim thiab tswj.

10. Meanderline Kav hlau txais xov Tuner: Qhov no yog ib hom tshiab ntawm kav hlau txais xov tuner uas siv cov qauv meanderline, uas yog ib hom kab sib kis uas tuaj yeem etched ntawm lub substrate. Meanderline ATUs muab kev ua tau zoo heev thiab yog lub teeb yuag thiab qis profile, tab sis lawv yuav kim los tsim.

11. Network Analyzer: Thaum tsis yog technically ATU, lub network analyzer tuaj yeem siv los ntsuas qhov ua tau zoo ntawm lub kav hlau txais xov thiab hloov kho raws li qhov tsim nyog. Network analyzers tuaj yeem muab cov ntaub ntawv tseem ceeb hais txog qhov system impedance, SWR, thiab lwm yam, tab sis lawv tuaj yeem kim thiab xav tau kev cob qhia tshwj xeeb kom ua haujlwm tau zoo.

Hauv cov ntsiab lus, kev xaiv ntawm tus kav hlau txais xov tuner nyob ntawm cov ntawv thov tshwj xeeb thiab cov teeb liab yuav tsum tau ua. L-network ATU yog qhov yooj yim, pheej yig, thiab yoog raws, thaum lwm hom muab kev sib piv zoo dua nyob rau ntau qhov sib txawv. Gamma match tuners muaj txiaj ntsig zoo, thaum nws pib-tuners yooj yim tab sis kim. Txhua ATUs xav tau kev teeb tsa, kev saib xyuas, thiab kev kho nyob ntawm ib puag ncig thiab cov kev xav tau tshwj xeeb ntawm lub kav hlau txais xov, xaiv txoj cai ATU tuaj yeem pab ua kom lub kav hlau txais xov qhov ua tau zoo, ua kom ntseeg tau, muaj txiaj ntsig zoo thiab txais tos.
Dab tsi yog terminologies muaj feem xyuam rau kav hlau txais xov tuning unit?
Nov yog qee cov ntsiab lus hais txog cov kav hlau txais xov tuning units:

1. Kev cuam tshuam: Impedance yog qhov kev tawm tsam uas lub kav hlau txais xov muaj rau qhov ntws ntawm tam sim no thaum siv hluav taws xob. Tus nqi ntawm impedance yog ntsuas hauv Ohms.

2. Sib txuam Network: Lub network sib txuam yog ib qho khoom siv uas kho qhov impedance ntawm qhov chaw lossis kev thauj khoom kom zoo rau kev hloov pauv ntawm lub zog.

3. SWV: SWR (Standing Wave Ratio) yog qhov piv ntawm qhov siab tshaj plaws amplitude ntawm ib yoj sawv ntsug mus rau qhov tsawg kawg nkaus amplitude ntawm tib yoj. SWR tuaj yeem siv los txiav txim siab qhov ua tau zoo ntawm lub kav hlau txais xov, nrog qhov sib piv qis dua qhia cov tshuab ua haujlwm tau zoo.

4. Reflection Coefficient: Lub reflection coefficient yog tus nqi ntawm lub zog uas tau cuam tshuam thaum lub teeb liab ntsib qhov impedance mismatch. Nws yog ib qho kev ntsuas ntawm qhov ua tau zoo ntawm lub kav hlau txais xov thiab qhia tias yog tus lej lossis feem pua.

5. Bandwidth: Bandwidth yog qhov ntau ntawm cov zaus uas lub kav hlau txais xov tuaj yeem ua haujlwm tau zoo. Lub bandwidth nyob ntawm ntau yam xws li hom kav hlau txais xov, nws impedance, thiab qhov sib txuam network configuration.

6. Q-Factor: Q-Factor yog ib qho kev ntsuas ntawm qhov ua tau zoo ntawm lub kav hlau txais xov resonant. Nws qhia tau hais tias lub sharpness ntawm lub resonance nkhaus thiab lub degree ntawm lub zog poob raws li ib tug teeb liab kis los ntawm lub system.

7. Inductance: Inductance yog ib yam khoom ntawm hluav taws xob hluav taws xob uas tawm tsam kev hloov pauv hauv cov dej ntws tam sim no. Nws yog ntsuas hauv Henries thiab yog ib qho tseem ceeb ntawm ATU.

8. Capacitance: Capacitance yog ib qho khoom siv hluav taws xob uas khaws cov nqi hluav taws xob. Nws yog ntsuas hauv farads thiab yog lwm qhov tseem ceeb ntawm ATU.

9. Resistive Matching: Resistive matching yog cov txheej txheem ntawm kev sib piv qhov tsis kam ntawm tus kav hlau txais xov mus rau qhov system transmitter lossis receiver tso zis. Nws suav nrog kev kho cov khoom ATU kom txo qis zog poob.

10. Inductive Matching: Inductive matching yog tus txheej txheem ntawm kev sib piv cov reactance ntawm lub kav hlau txais xov system mus rau lub transmitter los yog receiver tso zis. Nws suav nrog kev kho ATU's inductance los muab kev pom zoo impedance txuam.

11. TSW: VSWR (Voltage Standing Wave Ratio) zoo ib yam li SWR tab sis tau qhia nyob rau hauv cov nqe lus ntawm voltage es tsis txhob siv fais fab. Nws yog ib qho kev ntsuas ntawm qhov ua tau zoo ntawm RF kis kab mob lossis kav hlau txais xov.

12. Insertion poob: Insertion poob yog qhov poob uas tshwm sim thaum lub teeb liab taug kev los ntawm ib lub cuab yeej lossis Circuit Court, xws li kav hlau txais xov tuner. Nws yog ntsuas hauv decibels (dB) thiab yog qhov tseem ceeb rau kev txiav txim siab thaum xaiv ATU.

13. Tuning Range: Qhov kev ncua deb yog qhov ntau ntawm cov zaus uas ATU tuaj yeem muab kev sib txuam txaus impedance. Qhov ntau yam txawv nyob ntawm seb hom kav hlau txais xov tuner thiab qhov ntau zaus ntawm lub kav hlau txais xov.

14. Lub zog ntsuas: Lub zog ntsuas yog lub zog siab tshaj plaws uas ATU tuaj yeem ua haujlwm yam tsis muaj kev puas tsuaj lossis kev puas tsuaj hauv kev ua haujlwm. Nws yog feem ntau ntsuas hauv watts thiab yog qhov tseem ceeb thaum xaiv ATU rau ib daim ntawv thov tshwj xeeb.

15. Lub suab nrov: Lub suab nrov yog qhov ntsuas lub suab nrov ntawm ATU. Nws qhia txog cov suab nrov uas tau nkag mus rau hauv lub teeb liab thaum nws dhau los ntawm ATU thiab feem ntau qhia hauv decibels.

16. Phase Hloov: Theem hloov yog lub sij hawm ncua ntawm lub tswv yim thiab tso zis teeb liab hauv ATU. Nws tuaj yeem cuam tshuam rau lub teeb liab amplitude thiab theem yam ntxwv thiab yog ib qho tseem ceeb rau kev txiav txim siab thaum tsim thiab xaiv ATU.

17. Reflection Poob: Reflection poob yog tus nqi ntawm lub zog uas cuam tshuam rov qab mus rau lub transmitter vim qhov impedance mismatch nyob rau hauv lub kav hlau txais xov system. Nws yog feem ntau qhia hauv decibels thiab tuaj yeem cuam tshuam rau kev ua haujlwm thiab kev ua haujlwm ntawm lub cev.

Hauv cov ntsiab lus, cov ntsiab lus no yog qhov tseem ceeb rau kev nkag siab lub kav hlau txais xov tuning units 'kev ua haujlwm thiab kev ua haujlwm. Lawv pab txhais cov impedance thiab bandwidth yuav tsum tau ntawm lub kav hlau txais xov system, efficiency ntawm ATU Cheebtsam, thiab tag nrho cov kev ua tau zoo ntawm lub system. Los ntawm kev ua kom zoo dua cov kev txwv no, cov kav hlau txais xov tuaj yeem ua tiav qhov kev ua tau zoo tshaj plaws thiab muab kev ntseeg siab, zoo tshaj plaws thiab kev txais tos.
Dab tsi yog qhov tseem ceeb tshaj plaws ntawm cov kav hlau txais xov tuning tsev?
Qhov tseem ceeb tshaj plaws ntawm lub cev thiab RF specifications ntawm ib lub kav hlau txais xov tuning unit (ATU) yuav nyob ntawm seb cov ntawv thov tshwj xeeb thiab cov kev xav tau ntawm lub cev. Txawm li cas los xij, ntawm no yog qee qhov tseem ceeb ntawm lub cev thiab RF tshwj xeeb uas feem ntau siv los ntsuas ATU:

1. Impedance Matching Range: Qhov sib piv impedance yog qhov ntau ntawm impedance qhov tseem ceeb tshaj qhov uas ATU tuaj yeem muab kev sib txuam txaus impedance. Nws yog ib qho tseem ceeb uas yuav tau xaiv ib qho ATU uas tuaj yeem phim qhov impedance ntawm lub kav hlau txais xov rau lub transmitter lossis receiver tso zis.

2. Lub Hwj Chim Muaj Peev Xwm: Lub zog tuav lub peev xwm yog lub zog siab tshaj plaws uas ATU tuaj yeem daws yam tsis muaj kev puas tsuaj lossis kev puas tsuaj hauv kev ua haujlwm. Nws yog ib qho tseem ceeb heev uas yuav tau xaiv ib qho ATU uas tuaj yeem tswj lub zog theem ntawm lub transmitter lossis receiver yam tsis muaj kev qhia txog teeb liab distortion lossis lwm yam teeb meem.

3. Ntau zaus: Qhov ntau zaus yog qhov ntau zaus uas ATU tuaj yeem ua haujlwm tau zoo. Nws yog ib qho tseem ceeb uas yuav tau xaiv ib qho ATU uas tuaj yeem ua haujlwm nyob rau hauv qhov ntau zaus ntawm cov kav hlau txais xov thiab lub tshuab xa hluav taws xob lossis lub receiver.

4. TSW: VSWR (Voltage Standing Wave Ratio) yog ib qho kev ntsuas ntawm qhov ua tau zoo ntawm RF kis kab lossis kav hlau txais xov. Lub siab VSWR qhia qhov impedance mismatch thiab tuaj yeem ua rau lub teeb liab distortion lossis attenuation.

5. Insertion poob: Qhov kev poob qis yog qhov poob uas tshwm sim thaum lub teeb liab dhau los ntawm ATU. Nws yog ib qho tseem ceeb uas yuav tau xaiv ib qho ATU uas tsis tshua muaj qhov poob qis kom txo cov teeb liab attenuation thiab distortion.

6. Tuning Ceev: Qhov ceev ceev yog lub sij hawm nws yuav siv rau ATU kom phim lub impedance ntawm lub kav hlau txais xov system mus rau lub transmitter los yog receiver tso zis. Qhov ceev ceev yuav tsum ceev txaus kom ua raws li lub teeb liab zaus thiab lub zog hloov pauv.

7. Lub suab nrov: Lub suab nrov yog qhov ntsuas lub suab nrov ntawm ATU. Nws qhia txog cov suab nrov uas tau nkag mus rau hauv lub teeb liab thaum nws dhau los ntawm ATU. Lub suab nrov yuav tsum tsawg li tsawg tau kom txo cov teeb liab distortion thiab suab nrov.

8. Qhov loj thiab qhov hnyav: Qhov loj thiab qhov hnyav ntawm ATU tej zaum yuav yog qhov tseem ceeb rau kev txiav txim siab, nyob ntawm seb cov ntawv thov tshwj xeeb thiab cov tseev kom muaj. Cov ATU me me, lub teeb yuag tuaj yeem nyiam nyob rau qee kis, thaum loj dua, cov chav muaj zog ntau dua yuav tsim nyog rau kev siv hluav taws xob siab.

Hauv cov ntsiab lus, cov kev qhia tshwj xeeb ntawm lub cev thiab RF no yog qhov tseem ceeb thaum xaiv lub kav hlau txais xov tuning. Los ntawm kev xaiv ATU uas ua tau raws li cov kev qhia tshwj xeeb no, lub kav hlau txais xov tuaj yeem ua tiav qhov kev ua tau zoo tshaj plaws thiab muab kev ntseeg siab, zoo tshaj plaws kev xa xov thiab txais tos.
Dab tsi yog qhov sib txawv ntawm cov kav hlau txais xov tuning siv nyob rau hauv qhov chaw nres tsheb sib txawv?
Lub kav hlau txais xov tuning chav tsev (ATU) siv nyob rau hauv ntau qhov chaw tshaj tawm xov xwm tuaj yeem sib txawv nyob ntawm qhov tshwj xeeb daim ntawv thov thiab ntau zaus. Nov yog qee qhov sib txawv ntawm ATUs siv hauv ntau qhov chaw tshaj tawm:

1. UHF/VHF tshaj tawm cov chaw nres tsheb: UHF / VHF tshaj tawm cov chaw nres tsheb feem ntau siv ATUs uas tau tsim los rau ib qho kev sib tw tshwj xeeb, xws li 350-520 MHz rau VHF thiab 470-890 MHz rau UHF. Cov ATUs no feem ntau yog tsim rau hauv cov qauv kav hlau txais xov lossis mounted ze rau lub kav hlau txais xov. Lawv tuaj yeem siv ntau yam kev sib tw impedance, xws li lub quarter-wave transformer, gamma match, lossis balun. Qhov zoo ntawm kev siv ATU siab rau UHF / VHF zaus suav nrog kev txhim kho cov teeb liab zoo thiab ua haujlwm tau zoo, thaum qee qhov tsis zoo suav nrog tus nqi siab thiab tshwj xeeb kev teeb tsa thiab kev saib xyuas.

2. TV tshaj tawm: TV tshaj tawm xov xwm siv ATUs uas yog optimized rau ib tug tshwj xeeb channel zaus, xws li 2-13 rau VHF thiab 14-51 rau UHF. Cov ATUs no tuaj yeem siv cov txheej txheem sib txawv kom phim cov impedance, xws li lub latching relay, tsis siv neeg sib txuam network, lossis kev sib txuas ruaj khov. Lawv feem ntau yog mounted nyob rau hauv ib tug nyias muaj nyias ib chav tsev los yog lub tsev thiab txuas nrog lub transmitter ntawm ib tug coaxial cable. Qhov zoo ntawm kev siv TV-tshwj xeeb ATU suav nrog kev txhim kho cov teeb liab zoo thiab kev sib raug zoo nrog lub transmitter, thaum qhov tsis zoo yuav suav nrog cov nqi siab dua thiab ntau dua kev txhim kho thiab kev saib xyuas.

3. AM Broadcast Stations: AM cov chaw tshaj tawm xov xwm siv ATUs uas tau tsim los ua kom haum rau qhov impedance ntawm tus kav hlau txais xov mus rau lub transmitter tso zis impedance, uas feem ntau yog 50 Ohms. Cov ATUs no tuaj yeem siv ntau yam txuj ci, xws li pi-network, L-network, lossis T-network. Lawv kuj tseem tuaj yeem suav nrog cov khoom siv lim kom tshem tawm cov zaus tsis xav tau. Lawv feem ntau yog nyob rau hauv ib chav tsev sib cais los yog lub tsev thiab txuas nrog lub transmitter ntawm ib txoj kab sib txuas, xws li qhib hlau los yog coaxial cable. Qhov zoo ntawm kev siv AM-tshwj xeeb ATU suav nrog kev txhim kho cov teeb liab zoo thiab kev sib raug zoo nrog lub transmitter, thaum qhov tsis zoo yuav suav nrog cov nqi siab dua thiab ntau dua kev txhim kho thiab kev saib xyuas.

4. Cov chaw tshaj xov xwm FM: FM tshaj tawm cov chaw nres tsheb siv ATUs uas tau kho kom zoo rau cov zaus ib ntus, xws li 88-108 MHz. Cov ATUs no tuaj yeem siv cov txheej txheem sib txawv kom haum rau qhov impedance, xws li lub taub hau tuner, npauj npaim capacitor, lossis folded dipole kav hlau txais xov. Lawv kuj tseem tuaj yeem suav nrog cov khoom siv lim kom tshem tawm cov zaus tsis xav tau. Lawv feem ntau yog nyob rau hauv ib chav tsev sib cais los yog lub tsev thiab txuas nrog lub transmitter ntawm ib tug kis tau tus mob kab, xws li coaxial cable los yog waveguide. Qhov zoo ntawm kev siv FM-tshwj xeeb ATU suav nrog kev txhim kho cov teeb liab zoo thiab kev sib raug zoo nrog lub transmitter, thaum qhov tsis zoo yuav suav nrog cov nqi siab dua thiab ntau qhov tshwj xeeb ntawm kev teeb tsa thiab kev saib xyuas.

Hauv kev xaus, kev xaiv ntawm ATU rau qhov chaw tshaj tawm xov xwm nyob ntawm ntau yam, suav nrog ntau zaus, lub zog xa hluav taws xob, teeb liab zoo, thiab kev teeb tsa thiab kev saib xyuas. Los ntawm kev xaiv qhov tsim nyog ATU thiab optimizing nws qhov kev ua tau zoo, qhov chaw tshaj tawm xov xwm tuaj yeem ua tiav qhov siab tshaj plaws ntawm cov teeb liab zoo thiab kev ntseeg siab, kom ntseeg tau tias cov teeb liab kis tau zoo thiab txais tos.
Yuav ua li cas xaiv tus kav hlau txais xov tuning unit rau ntau qhov chaw tshaj tawm?
Xaiv qhov zoo tshaj plaws kav hlau txais xov tuning unit (ATU) rau lub xov tooj cua tshaj tawm xov tooj cua yuav tsum tau ua tib zoo xav txog cov kev thov tshwj xeeb, ntau zaus, lub zog xa hluav taws xob, thiab lwm yam yuav tsum tau ua. Nov yog qee cov lus qhia rau kev xaiv ATU zoo tshaj plaws rau kev tshaj tawm xov xwm sib txawv:

1. UHF Broadcasting Chaw Nres Tsheb: Thaum xaiv ATU rau lub chaw nres tsheb UHF tshaj tawm, nrhiav ATUs uas yog tsim los rau ntau zaus siv los ntawm chaw nres tsheb, uas feem ntau yog 470-890 MHz. Lub ATU yuav tsum tau ua kom zoo rau qhov tsis muaj qhov tsis zoo thiab lub zog tuav lub peev xwm kom txo tau cov teeb liab distortion thiab xyuas kom muaj kev sib kis tau zoo. Lub siab ATU uas tau tsim rau hauv cov qauv kav hlau txais xov lossis txuas ze ntawm lub kav hlau txais xov yuav yog qhov kev xaiv zoo tshaj plaws rau UHF tshaj tawm xov xwm chaw nres tsheb.

2. VHF Broadcasting Station: Rau qhov chaw nres tsheb VHF tshaj tawm, xaiv ATU uas yog qhov zoo rau qhov tshwj xeeb VHF zaus siv los ntawm chaw nres tsheb, uas feem ntau yog 174-230 MHz. ATU yuav tsum muaj qhov poob qis thiab muaj peev xwm tuav lub zog siab kom ntseeg tau tias kev sib kis tau zoo. Lub siab ATU uas tau tsim rau hauv cov qauv kav hlau txais xov lossis txuas ze ntawm tus kav hlau txais xov yuav yog qhov kev xaiv zoo tshaj plaws rau VHF tshaj tawm xov xwm chaw nres tsheb.

3. Xov tooj cua FM: Rau qhov chaw nres tsheb FM xov tooj cua, xaiv ATU uas yog qhov zoo tshaj plaws rau qhov tshwj xeeb zaus siv los ntawm chaw nres tsheb, uas feem ntau yog 88-108 MHz. ATU yuav tsum muaj qhov poob qis thiab muaj peev xwm tuav tau lub zog kom txo tau cov teeb liab distortion thiab xyuas kom muaj kev sib kis tau zoo. Lub siab ATU uas nyob rau hauv ib chav tsev sib cais los yog lub tsev thiab txuas nrog lub transmitter ntawm ib tug kis tau tus mob kab, xws li ib tug coaxial cable, tej zaum yuav yog ib qho kev xaiv zoo tshaj plaws rau lub xov tooj cua FM.

4. TV Tshaj Tawm: Thaum xaiv ib qho ATU rau TV tshaj tawm, xaiv ATU uas yog optimized rau cov channel zaus siv los ntawm qhov chaw nres tsheb, uas feem ntau yog 2-13 rau VHF thiab 14-51 rau UHF. ATU yuav tsum muaj qhov poob qis thiab muaj peev xwm tuav lub zog siab kom ntseeg tau tias kev sib kis tau zoo. Lub siab ATU uas nyob rau hauv ib chav tsev sib cais los yog lub tsev thiab txuas nrog lub transmitter ntawm ib tug coaxial cable tej zaum yuav yog qhov kev xaiv zoo tshaj plaws rau TV tshaj tawm hauv xov tooj cua.

5. AM Broadcasting Station: Rau qhov chaw nres tsheb AM tshaj tawm, xaiv ATU uas yog qhov zoo tshaj plaws rau qhov tshwj xeeb zaus siv los ntawm chaw nres tsheb, uas feem ntau yog 530-1710 kHz. Lub ATU yuav tsum tau tsim kom phim lub impedance ntawm tus kav hlau txais xov mus rau lub transmitter tso zis impedance, uas feem ntau yog 50 Ohms. Lub pi-network lossis T-network ATU yuav yog qhov kev xaiv zoo tshaj plaws rau AM tshaj tawm xov xwm.

Hauv kev xaus, xaiv qhov zoo tshaj plaws ATU rau lub xov tooj cua tshaj tawm xov tooj cua yuav tsum tau ua tib zoo xav txog qhov tshwj xeeb zaus, lub peev xwm tuav lub zog, qhov poob qis, thiab impedance txuam cov cai. Los ntawm kev xaiv qhov tsim nyog ATU thiab ua kom nws qhov kev ua tau zoo, qhov chaw tshaj tawm xov xwm tuaj yeem ua tiav qhov siab tshaj plaws ntawm cov teeb liab zoo thiab kev ntseeg siab, kom ntseeg tau cov teeb liab kis tau zoo thiab txais tos.
Yuav ua li cas kav hlau txais xov tuning unit yog tsim thiab ntsia?
Nov yog cov ntsiab lus ntawm cov txheej txheem tsim thiab txhim kho Antenna Tuning Unit (ATU) hauv qhov chaw tshaj tawm:

1. Tsim thiab Engineering: Cov txheej txheem pib nrog theem tsim thiab engineering, qhov twg cov kev qhia tshwj xeeb thiab cov cai ntawm ATU tau txiav txim siab. Qhov no suav nrog qhov ntau zaus, lub zog tuav lub peev xwm, qhov sib txawv, thiab lwm yam.

2. Component Sourcing: Tom qab tsim theem, cov khoom xws li capacitors, inductors, thiab resistors yog los ntawm cov neeg muab kev ntseeg siab kom ntseeg tau zoo.

3. Printed Circuit Board (PCB) Tsim thiab tsim khoom: Lub rooj tsav xwm hauv Circuit Court yog tsim los ntawm cov qauv tsim ntawm ATU thiab yog tsim los ntawm cov tshuab siv tshuab.

4. Kev sib dhos: Lub rooj tsav xwm Circuit Court thiab lwm yam khoom siv nrog rau kev sib xyaw ua ke yog sib sau ua ke los ntawm cov kws tshaj lij hauv cov kauj ruam meej. Lub rooj tsavxwm raug kuaj hluav taws xob los xyuas kom meej ua haujlwm.

5. Tuning lub ATU: ATU yog tom qab ntawd kho kom zoo rau kev ua haujlwm zoo hauv kev tsim khoom.

6. Kev Tswjhwm Zoo: Kev tshuaj xyuas zaum kawg los ntawm cov neeg ua haujlwm tswj xyuas kom zoo yog ua kom ntseeg tau tias ATU ua tau raws li txhua qhov kev qhia tshwj xeeb.

7. Kev tsim khoom thiab ntim khoom: Tom qab dhau qhov kev tswj xyuas zoo, ATUs tau tsim nyob rau hauv ntim thiab ntim rau cov khoom xa tuaj.

8. Shipping thiab xa khoom: Tom qab ntawd cov ATUs raug xa mus rau qhov chaw tshaj tawm xov xwm lossis tus xa khoom.

9. Kev teeb tsa thiab kev sib koom ua ke: Tom qab kev xa khoom, ATUs raug teeb tsa, sib xyaw ua ke, thiab txuas nrog lub tshuab xa tawm. Cov txheej txheem no yuav suav nrog kev hloov cov khoom qub lossis txhim kho ATU rau hauv qhov chaw nres tsheb qhov sib txuas uas twb muaj lawm.

10. Kev kuaj thiab teeb tsa: Tom qab ntawd ATU raug kuaj xyuas kom ntseeg tau tias nws ua haujlwm raug thiab muab qhov ua tau zoo tshaj plaws uas yuav tsum tau ua rau nws daim ntawv thov. Nws kuj yog configured optimize nws tuning thiab impedance txuam peev xwm.

11. Fine-tuning thiab Optimization: Tom qab kev teeb tsa, ATU's impedance txuam yog tuned thiab optimized los xyuas kom meej tias nws phim cov zis impedance ntawm lub transmitter thiab kav hlau txais xov system, maximizing lub teeb liab tso zis ntau zog.

12. FCC Daim Ntawv Pov Thawj: Thaum kawg, ATU tau lees paub los ntawm cov tub ceev xwm tsim nyog, xws li FCC, kom ntseeg tau tias nws ua tau raws li cov qauv kev cai rau kev faib cov zaus, qib siab tshaj plaws, thiab lwm yam.

Hauv kev xaus, lub kav hlau txais xov tuning chav tsev (ATU) yog ib qho tseem ceeb ntawm cov khoom siv hauv kev tshaj tawm xov xwm uas yuav tsum muaj kev tsim vaj tsev thiab kev tsim khoom kom ntseeg tau tias kev ua haujlwm zoo. Cov txheej txheem ntawm kev tsim thiab txhim kho ATU suav nrog ntau cov kauj ruam sib txawv, los ntawm kev tsim thiab kev tsim vaj tsev mus rau kev sim, ntawv pov thawj, kev teeb tsa, thiab kev ua kom zoo. Tag nrho cov theem no yuav tsum ua kom tau raws li cov qauv siab tshaj plaws ntawm kev ua haujlwm thiab kev nyab xeeb los tsim cov khoom lag luam zoo thiab tsis muaj kev cuam tshuam cov teeb liab uas ncav cuag cov neeg tuaj saib.
Yuav ua li cas koj thiaj tswj tau lub kav hlau txais xov tuning unit?
Kev tuav lub kav hlau txais xov tuning unit (ATU) hauv qhov chaw tshaj tawm xov xwm yog qhov tseem ceeb los ua kom cov cuab yeej ua haujlwm tau zoo thiab tsim cov teeb liab zoo. Nov yog qee cov lus qhia txog yuav ua li cas thiaj tswj tau ATU kom raug:

1. Kev tshuaj xyuas: Tsis tu ncua tshuaj xyuas ATU rau cov cim qhia ntawm kev puas tsuaj, hnav thiab tsim kua muag, thiab cov cim qhia ntawm corrosion los yog xeb. Tshawb xyuas cov xaim, txuas, thiab cov xaim hauv av kom pom cov cim ntawm oxidation, thiab kev puas tsuaj.

2. Ntxuav: Khaws ATU kom huv los ntawm kev so tsis tu ncua siv cov ntaub huv huv, qhuav. Koj tseem tuaj yeem siv txhuam txhuam txhuam kom tshem tawm cov plua plav thiab av uas tuaj yeem ua rau ntawm qhov chaw ntawm ATU.

3. Kev saib xyuas lub zog: Saib xyuas cov qib fais fab kom ntseeg tau tias ATU tsis puas los ntawm lub zog ntau dhau. Kev saib xyuas lub zog kom zoo kuj tseem tuaj yeem tiv thaiv kev puas tsuaj emitter, uas tuaj yeem cuam tshuam rau kev ua haujlwm ntawm ATU.

4. Tsis tu ncua Tuning: Lub Tuning unit xav tau qee qhov kev kho kom zoo rau kev ua haujlwm zoo kom tswj tau qhov xav tau impedance nyob ze ntawm qhov sib txuam thiab kho qhov zaus.

5. Kev tiv thaiv huab cua: Lub ATU yog nyob rau hauv ib qho chaw tiv thaiv huab cua tiv thaiv huab cua xws li nag, plua plav, thiab cov khib nyiab hauv huab cua, uas tuaj yeem ua rau nws cov khoom siv sab hauv puas. Kev tiv thaiv huab cua kom zoo tuaj yeem tiv thaiv kev puas tsuaj thiab xyuas kom lub ATU ua haujlwm zoo raws sijhawm.

6. Kev siv hauv av: Xyuas kom meej tias lub hauv paus system zoo thiab zoo ib yam kom tso tawm ib qho oscillation lossis static build-ups. Qhov no ua kom ruaj khov RF teb, uas yog qhov tseem ceeb rau kev ua haujlwm ntawm ATU.

7. Cov ntaub ntawv: Khaws cov ntaub ntawv kom raug rau kev ua haujlwm tseem ceeb xws li kev saib xyuas tsis tu ncua, kev hloov pauv ntawm zaus, lossis hloov chav tsev kom taug qab ATU cov xwm txheej dhau sijhawm.

Los ntawm kev ua raws li cov txheej txheem tu kom raug, ATU yuav ua haujlwm tau zoo thiab tsim cov xov tooj cua zoo thiab tsis muaj kev cuam tshuam uas ncav cuag cov neeg xav tau. Kev tshuaj xyuas tsis tu ncua, tu, tu, tu, cov ntaub ntawv tsim nyog, kev saib xyuas hluav taws xob, kev siv hauv av zoo, thiab kev tiv thaiv huab cua kom pom kev ua haujlwm zoo thiab txuas ntxiv ATU lifespan.
Koj yuav kho lub kav hlau txais xov tuning li cas yog tias nws tsis ua haujlwm?
Yog hais tias lub kav hlau txais xov tuning unit (ATU) ua tsis tau zoo, koj tuaj yeem ua raws li cov kauj ruam no los kho chav tsev:

1. Txheeb xyuas qhov teeb meem: Thawj kauj ruam yog txhawm rau txheeb xyuas qhov tshwj xeeb ntawm ATU ua haujlwm tsis zoo. Koj tuaj yeem ua qhov no los ntawm kev soj ntsuam lub kaw lus tus cwj pwm, thiab ua ib qho kev ntsuam xyuas nrog ib tug multimeter los txiav txim lub hauv paus ntawm qhov teeb meem.

2. Hloov cov Faulty Component: Thaum koj tau txheeb xyuas qhov yuam kev, hloov nws thiab sim ATU dua kom pom tias nws ua haujlwm raug. Cov khoom hloov pauv feem ntau suav nrog fuses, capacitors, inductors, diodes, lossis transistors.

3. Txheeb xyuas cov khoom siv hluav taws xob: Xyuas kom tseeb tias ATU tau txais lub zog los ntawm qhov chaw, xws li AC lub zog, thiab qhov hluav taws xob thiab qhov tam sim no nyob hauv ATU qhov kev teev tseg.

4. Tshawb xyuas kev sib txuas: Tshawb xyuas cov xaim ntawm ATU, suav nrog kev sib txuas hauv av, teeb liab thiab lub zog nkag, thiab cov khoom tawm, thiab cov ntsaws ruaj ruaj tamper pov thawj. Tighten ib qho xoob terminals lossis kev sib txuas thiab rov sim ATU.

5. Ntxuav: Lub ATU cov khoom tuaj yeem khaws cov plua plav, cov khib nyiab, lossis lwm yam khoom paug thaum lub sijhawm, ua rau luv luv lossis lwm yam ua haujlwm tsis zoo. Siv txhuam thiab dej cawv los ntxuav cov khoom no thiab tshem tawm cov kab mob los ntawm cov kab txuas los yog hauv av.

6. Kho lub Printed Circuit Board (PCB): Yog tias ATU PCB puas lawm, kho lossis hloov nws. PCBs tuaj yeem kho tau los ntawm tus kws tshaj lij kws tshaj lij uas txawj kho cov khoom siv hluav taws xob nyuaj.

7. Kev Kho Kom Zoo: Rau kev kho dua tshiab lossis teeb meem nyuaj dua, nws yuav tsum tau sab laj nrog tus kws tshaj lij. Lawv muaj cov kws tshaj lij thiab cov cuab yeej los kuaj xyuas thiab kho qhov tsis xws luag dhau ntawm qhov nruab nrab ntawm cov kws tshaj lij.

Hauv kev xaus, kev kho ATU yuav tsum muaj txoj hauv kev thiab meej. Nws suav nrog kev txheeb xyuas qhov teeb meem, hloov cov khoom tsis raug, tshuaj xyuas kev sib txuas, tu, thiab qee zaum kho PCB. Nrog rau kev saib xyuas thiab kho kom zoo, ATU tuaj yeem muab cov kev pabcuam txhim khu kev qha xyoo, txhim kho cov teeb liab zoo thaum txuag nqi kho thiab poob sijhawm.

NCO NTSOOV

NCO NTSOOV

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