Nws yuav siv cov txuj ci los teeb lub theem kom zoo. Thaum cov duab thiab xim muab tso ua ke kom raug thiab ntws ua ke hauv ib txheej, nws tsim kev paub txog kev paub uas ua rau txhua yam ntawm theem sawv tawm. Txhawm rau ua qhov no, yuav tsum muaj kev sib koom ua ke ntau. Thaum lub sijhawm ua yeeb yam, tej zaum yuav muaj kaum lossis ntau pua qhov chaw teeb pom kev zoo. Kom paub tseeb tias lawv txhua tus ua haujlwm ua haujlwm zoo yuav tsum paub txog kev sib txuas ntau yam khoom siv hluav taws xob. DMX-512 tsis yog qhov zais cia loj hauv kev lag luam teeb pom kev zoo.

DMX-512 raws tu qauv yuav siv tau los ntawm yuav luag tag nrho cov lag luam muaj automated teeb fixtures los tham rau ib leeg. Nrog cov tswj sib txawv, koj tuaj yeem tswj tau ntau yam teeb pom kev zoo nrog cov "lus".

Ntau Ethernet-raws li qauv ua rau nws muaj peev xwm xa DMX-512 cov ntaub ntawv ntawm cov khoom siv thiab kev sib txuas lus (Art-Net thiab sACN). Cov neeg tsim khoom siv teeb pom kev zoo siv DMX-512 ntau heev, yog li txhua tus neeg ua haujlwm nrog cov khoom siv hluav taws xob niaj hnub no yuav tsum paub tias lawv tuaj yeem siv DMX-512 li cas hauv ob qho tib si fixtures thiab consoles.

DMX512 yog dab tsi?

DMX512 yog lub kaw lus tswj lub teeb tab sis nws tuaj yeem tswj tau lwm yam. "Digital Multiplex" qhia koj tias nws ua haujlwm li cas los ntawm lub npe nws tus kheej. Zoo li lub sijhawm sijhawm, cov pob ntawv uas ua rau feem ntau ntawm cov txheej txheem qhia cov khoom siv twg yuav tsum tau txais cov ntaub ntawv. Hauv lwm lo lus, tsis muaj chaw nyob thiab tsis muaj ntaub ntawv hais txog nws. Nyob rau hauv cov ntaub ntawv no, qhov chaw nyob yog txiav txim los ntawm qhov chaw ntawm lub pob ntawv.

Qhov tseeb, cov txheej txheem yog ncaj nraim. Koj tuaj yeem ua hluav taws xob sib txuas nrog 5-pin XLR connectors, thiab qhov sib txuas hauv kab sib npaug (nrog 0 V siv). Koj tuaj yeem xa cov bytes thiab cov khoom mus rau qhov chaw nres nkoj ntawm 250,000 bps. Tus qauv RS-485 yog hom hluav taws xob sib cuam tshuam.

Nws tseem ceeb heev uas yuav tsum nco ntsoov tias "512" hauv "DMX512" kuj tseem nco tau heev. Tus lej no qhia tau tias ib pob ntawv tuaj yeem muaj txog 512 bytes ntawm cov ntaub ntawv (513 raug xa mus, tab sis thawj zaug tsis siv). Ib pob tuaj yeem tuav tag nrho cov ntaub ntawv hauv DMX ntug.

Yog tias txhua lub teeb pom kev zoo tsuas yog txhawb nqa qhov yooj yim dimming rau ib qho xim, zoo li lub teeb dawb, ces ib cov ntaub ntawv byte tuaj yeem tswj lub teeb pom kev zoo thiab muaj txog li 255 qib ntawm qhov ci, los ntawm kev tawm (zero) mus rau tag nrho (255), qhov no txhais tau tias uas koj tuaj yeem tswj 512 li.

Ib qho RGB tswj cov tswv yim rau liab, ntsuab, thiab xiav lub teeb fixtures xav tau peb cov ntaub ntawv bytes. Hauv lwm lo lus, koj tsuas tuaj yeem tswj tau 170 RGB li vim tias pob ntawv (thiab, los ntawm kev txuas ntxiv, DMX ntug) tuaj yeem tuav tau 512 cov ntaub ntawv siv tau xwb.

Keeb kwm ntawm DMX

Ua ntej DMX 512, theem teeb pom kev lag luam tau siv ntau yam ntawm cov tswv thiab tsis sib xws, uas ua rau muaj kev tsis sib haum xeeb thiab txuas ntxiv. Tom qab ntawd tus qauv DMX 512 tau tsim.

Lub Tebchaws Asmeskas Lub Tsev Haujlwm Saib Xyuas Kev Ua Yeeb Yam (USITT) tau tsim DMX 512 hauv xyoo 1986, thiab USITT DMX 512/1990 tuaj tawm xyoo 1990.

Niaj hnub nimno DMX512, ntawm qhov tod tes, yog tsim los ntawm Kev Lom Zem Kev Pabcuam thiab Technology Association (ESTA). Xyoo 1998, ESTA pib xa DMX512 mus rau American National Standards Institute (ANSI). ESTA tau hloov pauv mus rau qhov kawg ntawm DMX512 hauv xyoo 2008.

Lub hauv paus ntawm DMX tswj

Koj tuaj yeem saib "Digital Multiplex Signal" siv cov ntawv "DMX." Vim tias nws tuaj yeem ua haujlwm nrog 512 raws, nws feem ntau hu ua DMX 512. Lub teeb RGB muaj peb qhov sib txawv "channels" lossis xim. Yog tias koj xav txog lub teeb RGB, koj tuaj yeem nkag siab zoo dua qhov "channel" yog dab tsi. Ib lub ntiaj teb DMX tuaj yeem tswj tau txog 512 monochrome lossis 170 RGB teeb. Siv DMX Decoder/Driver, txhua qhov khoom siv tau txais qhov tshwj xeeb 512-ntiaj teb DMX chaw nyob, thiab tom qab ntawd teeb tsa koj lub teeb pom kev zoo los ua haujlwm nrog cov chaw nyob.

DMX chaw nyob yog dab tsi?

Ib channel yog lwm lub npe rau qhov chaw nyob DMX. Yog tias koj xav khiav ntau qhov kev sib tw sib cais, koj yuav tsum muab txhua qhov chaw pib tshwj xeeb uas tsis yog ib feem ntawm lwm qhov kev sib tw hauv pawg channel.

• Qhov chaw nyob, tseem hu ua qhov chaw nyob pib, qhia rau koj tias lub teeb lub teeb tam sim no tau kho rau qhov twg.

• Ib qho kev teeb tsa kev teeb tsa yog tswj hwm los ntawm tus cwj pwm DMX, uas yog cov channel lossis pab pawg ntawm cov channel.

Qee qhov DMX fixtures muaj qhov hloov pauv uas tso cai rau koj hloov qhov chaw nyob hauv lub Hoobkas.

Lub ntiaj teb yog dab tsi?

Hauv lub ntiaj teb DMX, muaj 512 console tso zis raws. Thaum koj tau pom tag nrho 512 lub ntiaj teb ua tau, koj tuaj yeem txav mus rau lwm qhov thiab pib dua los ntawm qhov pib.

Nyob ntawm lub console, "1.214" lossis "a.214" tuaj yeem siv los piav qhia qhov twg lub teeb nyob hauv thawj lub ntiaj teb. Qee lub consoles suav lub ntiaj teb thib ob ntawm 513 txog 1024.

Nyob rau sab nraum qab ntawm koj lub teeb pom kev zoo, koj tuaj yeem pom cov ntawv sau nrog cov lus xws li "Lub Ntiaj Teb 1," "Lub Ntiaj Teb 2," "DMX A," thiab "DMX B," Lub teeb liab los ntawm DMX ntug tawm los ntawm cov khoom sib txuas.

Txhua lub ntiaj teb xav tau nws tus kheej DMX cable, thiab lawv tsis tuaj yeem muab tso ua ke. Tsis txhob cia siab tias lub teeb yuav mob siab txog qhov muaj nyob ntawm ntug lossis txawm paub tias lawv yog dab tsi.

Rau lub teeb, txhua lub ntiaj teb zoo li "zoo ib yam," thiab txhua yam nws yuav tsum xav hauv tsev hauv ib qho ntawm lawv yog DMX teeb liab. Yog tias koj tsis txuas koj lub teeb pom kev zoo rau lub ntiaj teb, lawv yuav tsis ua haujlwm li koj xav kom lawv ua.

Dab tsi yog qhov txwv ntawm DMX 512?

Tsuas yog qee qhov teeb meem me me, DMX yog txoj hauv kev zoo los tswj peb lub teeb pom kev zoo. Ib txoj kab DMX ib leeg tuaj yeem txuas mus txog 32 cov khoom siv feem ntau.

Raws li DMX teeb liab mus dhau ntawm koj lub teeb, nws tau qaug zog thiab qaug zog. Thaum lub sij hawm, koj yuav tsis muaj peev xwm suav rau nws. Tus qauv hais tias 32 lub teeb yog tus lej zoo tagnrho. Nyob ntawm ntau yam, tus lej ntawd tuaj yeem qis dua 32 lossis siab dua li ntawd. Yuav kom muaj kev nyab xeeb, tsis txhob siv ntau tshaj 16 lub teeb. Yog tias koj yuav tsum tau kho qhov teeb meem hauv lub network uas yuav kom koj nce ntaiv lossis siv lub tshuab nqa kom tau mus rau lub qab nthab siab, ua kom koj pab pawg me me thiab ceev faj heev.

Txawm hais tias DMX cov teeb liab tuaj yeem mus txog 1800 ko taw, txhua yam ntau dua 500 ko taw yog kev ntxhov siab. Cov teeb liab DMX tej zaum yuav tsis ruaj khov nyob ntawm seb muaj pes tsawg lub teeb txuas. Yog tias koj lub teeb liab pib tsis zoo, koj tuaj yeem kho nws sai sai los ntawm kev faib nws thiab ua kom nws muaj zog.

Dab tsi yog DMX splitting thiab boosting?

Koj tuaj yeem yuav DMX splitter, tseem hu ua DMX Opto-split lossis DMX repeater. Yog tias koj muaj lub teeb ntau dua li ib txoj hlua daisy tuaj yeem ua tau tab sis tseem tsis tau sau koj lub ntiaj teb.

Txhua qhov kev faib tawm tuaj yeem xa cov ntaub ntawv mus txog 32 cov khoom siv, muab kev xaiv ntau rau koj. Nov yog tib txoj hauv kev los faib koj DMX pub rau ntau tshaj ib kab.

Yog tias koj sim txuas koj lub teeb liab DMX nrog kev sib cais passive (y-cable), koj yuav muaj teeb meem.

Nws yog kev sib cais tsis sib haum, yog li siv ob qho tib si 3-pin thiab 5-pin kev sib txuas ntawm cov khoom siv sab nraud uas muaj ob qho tib si yuav ua rau muaj teeb meem. Siv 3-pin cable nkag mus rau qhov sib tw thiab 5-pin cable kom tso nws kom txo tau cov adapters uas koj xav tau.

Nws tseem ceeb heev uas yuav tsum nco ntsoov tias qee zaum koj yuav khiav mus rau hauv cov khoom siv uas tsis ua haujlwm nrog lwm cov khoom.

Qee cov khoom pheej yig dua tuaj yeem nkag mus rau hauv hom kev siv tshuab thaum lawv poob cov ntaub ntawv. Cov khoom pheej yig no xa tawm cov ntaub ntawv uas tsis yog ib txwm raug rau lwm cov khoom siv. Qhov no yuav tsum tsis txhob tshwm sim hauv nruab nrab ntawm koj qhov yeeb yam.

Lub DMX splitter tuaj yeem tso txhua lub teeb rau ntawm nws txoj kab, kom nws tsis txhob cuam tshuam los ntawm lwm lub teeb. Koj yuav tsum muaj ib qho ntawm cov no nrog koj ib txwm vim koj tsis paub thaum twg koj yuav xav tau.

RS-485 yog dab tsi?

Tus qauv RS-485 yog ib txoj hauv kev los txuas cov khoom siv hluav taws xob. Ib qho ntawm nws peb cov xov hlau yog hauv av lossis 0V siv, thiab ob qho tib si yog siv los xa cov teeb liab hauv kev sib npaug. Ntawm lub npav hlau no, muaj chaw rau ntau tshaj ib lub cuab yeej, tab sis DMX teeb pom kev zoo tsuas yog siv tus tswv thiab tus qhev xwb.

Vim tias cov teeb pom kev zoo tuaj yeem tsim los ntawm ntau tshaj ib feem, txhua chav teeb pom kev zoo tuaj yeem muaj ob qhov kev sib txuas RS-485. Ib qho kev sib txuas ntawm tus maub los rau lwm lub teeb pom kev zoo hauv cov saw daisy ua raws li RS-485 qhev, thiab lwm yam kev sib txuas ua raws li tus tswv RS-485.

Txog tam sim no, tsuas yog ib qho khoom siv tswv thiab ib tus qhev ntaus ntawv yuav raug saib (feem ntau yog lub teeb pom kev zoo ntawm cov khoom siv).

A thiab B qee zaum hu ua Non-inverting thiab Inverting, lossis tsuas yog "+" thiab "-" (tab sis tsis txhob sib xyaw nrog DC fais fab mov txuas yog tias koj hu rau lawv!). Ob lub xov hlau no xa cov teeb liab tawm ntawm theem thiab ua kom muaj lub teeb liab sib npaug. Thaum ib lub teeb liab xaim nyob rau ntawm qhov hluav taws xob siab piv rau 0V siv xaim, lub teeb liab thib ob yuav nyob ntawm qhov tsis tshua muaj hluav taws xob, thiab lwm yam.

Kev Sib Txuas Lus

Los ntawm kev sib txuas lus serial, ib byte ntawm Cov Ntaub Ntawv raug xa mus ua ib txoj hlua ntawm yim cov khoom, nrog rau qhov pib me ntsis thiab nres me ntsis hauv nruab nrab. Thawj me ntsis yog ib txwm 0, uas txhais tau hais tias ib lub sij hawm ntawm ib ntsis nyuam qhuav pib. Thaum siv DMX, ob qhov khoom uas tau teem rau logic 1 yog hu ua "stop bits."

suav thawj me ntsis, yim bytes, thiab ob qhov kawg, muaj tag nrho ntawm kaum ib ntsis. Qhov koj yuav tsum tau hu nws yog ib tug ncej. Txhua me ntsis yog 4us ntev vim hais tias tus ncej xa 250,000 zaug ib ob (qee zaum hu ua 250,000 baud).

Cov ntsiab lus ntawm DMX raws tu qauv

DMX raws tu qauv xa ib qho pib-ntawm-pob ntawv txiav txim thiab ib txheej ntawm thav ntawv hla lub tsheb npav serial. Tus cwj pwm xav tau yog pib lub pob ntawv, xa 513 thav ntawv, thiab tom qab ntawd tos (tsis ua haujlwm) ib ntus ua ntej pib txheej txheem dua. Nco ntsoov tias tsis yog txhua tus tswj hwm DMX tuaj yeem xa 513 thav ntawv raws li qhov tseeb.

DMX Raws

Ntawm nws theem pib, DMX-512 yog ib pawg ntawm cov ntaub ntawv hu ua "channels." "Lub ntiaj teb" qee zaum siv los piav txog tag nrho cov channel no. Tag nrho cov channel hauv "Lub Ntiaj Teb" ntxiv txog 512. Txhua channel tau ib txwm ua ib lub hnub qub sib txawv hauv galaxy. Tab sis nyob rau hauv niaj hnub teeb pom kev zoo systems nrog complex fixtures, txhua DMX channel feem ntau txuas nrog rau lwm qhov ntawm ib tug automated teeb fixture.

Txhua channel tuaj yeem muaj tus nqi nruab nrab ntawm 0 thiab 255. Ua ntej tshaj plaws, DMX-512 tau tsim los tswj tsuas yog cov dimmers yooj yim tshaj plaws, yog li 0-255 qhov tseem ceeb ntawm txhua channel tau siv los tswj cov teeb pom kev zoo ntawm 0-255. Nyob rau hauv txoj kev no, tus neeg siv tuaj yeem hloov pauv qhov ci ntawm cov teeb pom kev zoo li cas. DMX channels tam sim no tau siv los tswj cov khoom xws li ci ntsa iab, yias, thiab qaij ntawm cov khoom siv hluav taws xob siv hluav taws xob thiab lwm yam khoom siv lom zem.

Ib DMX ntug tuaj yeem xav tias yog ib pawg ntawm 512 raws. Txhua DMX ntug tuaj yeem muaj ib qho ntawm 256 qhov tseem ceeb (255 Ntxiv 1 rau 0).

Tswj teeb pom kev zoo siv cov channel

Txhua hom kev siv lub teeb pom kev zoo yuav tsum muaj ib ntu ntawm DMX ntug muab tso rau nws. Nrog rau ntau cov channel no, koj tuaj yeem hloov txhua feem ntawm lub teeb (feem ntau ntawm 12 thiab 30 channels). Qhov ci ntsa iab yog tswj los ntawm channel ib qho ntawm DMX system, thaum lub lauj kaub thiab qaij yog tswj los ntawm cov channel ob thiab peb, feem. 

Txhua lub teeb muaj nws tus kheej qhov chaw pib DMX, uas qhia peb cov channel twg hauv DMX ntug nws yuav pib tau txais cov lus txib los ntawm. Lub fixture cov ntawv qhia zaub mov sab hauv feem ntau siv los hloov qhov chaw pib DMX.

Tus neeg siv yuav tsum xub "patch" lub teeb pom kev zoo kom muab txhua qhov kev sib tw rau qhov chaw nyob DMX tshwj xeeb. Tam sim no hais tias lub console thiab lub teeb tuaj yeem sib tham, txhua yam kev ua khawv koob tuaj yeem tshwm sim. Lub console coder tuaj yeem xaiv lub teeb, hloov qee qhov ntawm nws qhov chaw, thiab txuag cov kev hloov pauv. 

Txawm hais tias lub console cov zis feem ntau qhia meej cov ntaub ntawv hauv tib neeg-nyeem tau qhov tseem ceeb rau tej yam xws li xim, siv, txoj hauj lwm, thiab ntau dua, cov lej no ib txwm txhais rov qab rau cov txheej txheem DMX thiab lawv cov txiaj ntsig sib xws.

DMX-512 yog xav tau los sib txuas lus nrog lub teeb vim nws xa cov ntaub ntawv tswj tseem ceeb. Txog thaum hloov pauv rau DMX-512 raws tu qauv, nws yog qhov tseem ceeb rau txhua tus neeg ua haujlwm hauv teeb pom kev zoo kom paub tias DMX-512 siv li cas hauv kev lag luam.

Kho vajtse Txheej

Vim tias lub rooj teeb pom kev zoo nyob deb ntawm theem, DMX512 feem ntau siv nyob rau qhov ntev. Thaum muaj suab nrov electromagnetic nyob ib puag ncig, lub teeb liab mus deb dua yog tias nws tuaj yeem nqa tau los ntawm qhov deb. Qhov no, nrog rau qhov tseeb tias DMX feem ntau siv nyob rau hauv qhov chaw uas muaj hluav taws xob ntau. Qhov no yog vim li cas vim li cas RS-485 tau raug xaiv los ua tus txheej txheem zoo tshaj plaws rau nws.

Txhawm rau txheeb xyuas qhov teeb meem no txhais li cas, koj yuav tsum muaj peev xwm qhia qhov txawv ntawm cov ntaub ntawv xaim (D +) thiab cov ntaub ntawv rov qab (D-) (D-). Peb hu qhov no "differential signal" vim peb ntsuas qhov sib txawv. Yog li ntawd qhov sib txawv ntawm ob lub teeb liab nyob twj ywm tib yam. 

Cov teeb liab sib txawv xws li RS485 zoo li tuaj tos lub suab nrov ntawm tib tus nqi ntawm ob lub teeb liab kab. Los ntawm muaj peev xwm qhia qhov sib txawv ntawm ob lub teeb liab, kev sib txuas lus ntev yog siv tau. Tus qauv DMX hais tias qhov ntev tshaj plaws yuav tsum tsis pub tshaj 1,000 ko taw, tab sis RS-485 yog ntsuas rau 4,000 ko taw.

Txawm hais tias feem ntau DMX cov ntaub ntawv xa mus dhau XLR-5 cables, DMX-enabled XLR-3 cables kuj tau siv. Rau RS-485, koj tsuas xav tau peb kab: hauv av, Data +, thiab Data-. Cov peb kab no feem ntau tau siv tag nrho. Txhawm rau npaj rau kev loj hlob yav tom ntej, yuav tsum tau ntxiv ib khub ntawm cov ntaub ntawv kab ntxiv, yog li XLR-5 cable tau tsim.

Pob ntawv qauv

Asynchronous serial cov ntaub ntawv tsis muaj parity thiab ob qhov chaw nres tsheb yog xa raws li DMX cov ntaub ntawv ntawm 250 kbit / s. Yog li, ib me ntsis los yog zuam ntawm lub moos yuav siv sij hawm plaub vib nas this xa. Cov qauv pob ntawv yog qhov zoo, thiab nws pib nrog lub sijhawm ntev BREAK thaum uas tsuas yog cov ntaub ntawv nrov raug xa mus.

Lub ncov tom ntej yog hu ua Mark Tom Qab So, uas tsuas yog siv sijhawm luv luv (MAB). Qhov tom ntej no yog Start Code (SC), uas yog xa mus ua 11-ntsis serial ncej nrog tus nqi 0x00 raws li cov ntaub ntawv. Muaj ib qho qis me ntsis, ib byte ntawm cov ntaub ntawv nrog yim ntsis, thiab ob lub siab. Cov ntaub ntawv ntau ntxiv hauv Start Code kuj tseem tuaj yeem qhia tias DMX cov ntaub ntawv zoo li cas hauv pob ntawv.

Pib Code 0x17 qhia txog pob ntawv ntawv, thaum Start Code 0xCC qhia txog pob khoom tswj chaw taws teeb. Tom qab pib Code, tus so ntawm DMX cov ntaub ntawv raug xa mus rau hauv 512 thav ntawv uas yog tag nrho tib yam. Cov thav duab no yog hu ua SLOTs (RGB qhov tseem ceeb, CMY qhov tseem ceeb, servo txoj hauj lwm, pos huab tshuab siab, thiab lwm yam ...). 

Ib Lub Sijhawm Nruab Nrab Nruab Nrab (MTBF) uas tuaj yeem kav ntev txog li ob thib ob yog qhia ntawm txhua tus ncej. Tom qab cov ntaub ntawv thav ntawv los lwm MTBP uas tuaj yeem kav ntev txog ib pliag. Tab sis lawv tsis tshua siv los ua kom tus ncej tus nqi ruaj khov.

Decoding cov ntaub ntawv

Lub cuab yeej paub li cas lub pob ntawv qhov yuav qhib rau? Koj tuaj yeem siv A DIP hloov los xaiv thawj cov ntaub ntawv qhov rau DMX fixtures.

Tom qab ntawd, lub fixture yuav mloog rau tus naj npawb ntawm cov ntaub ntawv slots xaiv. Piv txwv li, yog tias peb xaiv qhov 12 raws li qhov pib, qhov yooj yim RGB dimmer yuav coj mus rau qhov 12, 13, thiab 14 thiab raug kho rau cov ntaub ntawv ntawm cov channel. DMX fixtures yuav tsum ntxiv ib qho rau lawv lub qhov rooj ntawm qhov chaw nres tsheb thib ob, qhov no qhia rau lub microprocessor uas cov ntaub ntawv nkag mus rau hauv thaum lub thav duab tom ntej pib. 

Yog li, koj tuaj yeem rov pib lub txee thaum twg koj pom qhov sib cais thiab cim. Koj tuaj yeem rov pib dua lub sijhawm sib txawv, yog li DMX pob ntawv tsis tas yuav sau tag nrho 512 qhov. Tab sis tus naj npawb ntawm qhov chaw xav tau los ntawm txhua qhov kev sib tw txwv tsis pub muaj pes tsawg qhov chaw koj tuaj yeem nruab rau hauv ib lub Ntiaj Teb.

Kev Tswj Cov Chaw Taws Teeb (RDM)

Ib txoj kev tswj cov cuab yeej tej thaj chaw deb (RDM) uas siv DMX raws tu qauv yuav tsum tau siv los nrhiav cov ntaub ntawv hais txog lub teeb fixtures. RDM pib code (0xCC) thiab tus ID ntawm cov khoom siv uas tus txheej txheem xav tham yog xa mus rau hauv DMX512 pob ntawv.

Ua ntej cia cov kab ntawv mus, tus maub los yuav tos cov lus teb. Yog tias tus maub los ua tsis tiav, nws yuav rov sim dua tom qab qee lub sijhawm lossis tso tseg thiab txav mus. RDM yog ib txoj hauv kev zoo los nrhiav seb txhua qhov kev sib tw tuaj yeem ua tau li cas thaum koj nyuam qhuav pib hauv lub ntiaj teb tsis meej.

Lub network topology ntawm DMX 512 yog dab tsi?

Lub network DMX512 tau teeb tsa zoo li cov saw daisy, nrog rau ntau lub tsheb npav txuas nrog ob peb lub pob. Hauv DMX512 network, yuav muaj ib tus tswv tswj hwm thiab nyob qhov twg los ntawm 0 mus rau ntau yam qhev. Lub teeb pom kev zoo uas tswj hwm lub network ntawm dimmers, pos huab tshuab, txav taub hau, thiab lwm yam khoom siv uas tuaj yeem ua haujlwm nrog DMX yog ib qho piv txwv ntawm tus tswv thiab qhev ntaus ntawv.

Txhua tus qhev ntaus ntawv muaj ib qho DMX tawm tswv yim thiab ib qho DMX tso zis lossis cov khoom sib txuas. Tus maub los lub tswv yim txuas nrog thawj tus qhev nrog DMX512 cable, thiab thawj tus qhev cov zis txuas nrog rau tus qhev tom ntej hauv cov saw daisy nrog rau lwm lub cable.

DMX lub cev txheej - Connectors thiab hlau

8-ntsis binary cov ntaub ntawv yog siv los xa cov ntaub ntawv digital hla kev tiv thaiv kev sib tw twisted-wiring network. Ntawm 0 thiab 255, cov ntaub ntawv 8-ntsis tuaj yeem khaws 256 qhov sib txawv. Hauv binary, cov lej muaj nyob ntawm 00000000 (zero) txog 11111111 (ib lab) (255).

Tus qauv EIA-485-A thiab DMX512 yuav luag zoo ib yam, tab sis DMX512 ua rau me me hloov mus rau EIA-485-A tus qauv. Cov ntaub ntawv binary tuaj yeem xa los ntawm kev ua raws li EIA-485 tus qauv rau qib voltage.

Hauv DMX512 system, lub tsheb npav tuaj yeem ncav cuag 1200 meters ntev tab sis tuaj yeem txuas tau 32 nodes (3900 ft). Thaum DMX network muaj ntau dua 32 nodes, DMX splitters yuav tsum tau ua kom lub network tsis loj dhau.

Tus thawj DMX512 tus qauv hu rau kev siv tsib-pin XLR hluav taws xob connectors (XLR-5) nrog poj niam connectors rau xa thiab txiv neej connectors rau tau txais. Hloov chaw ntawm cov khoom qub DMX512, lub yim-pin modular (8P8C, tseem hu ua "RJ-45") txuas tuaj yeem siv rau hauv cov tshuab ruaj khov uas Cov Khoom Siv tsis tas yuav tsum tau ntsaws thiab tawm ntau zaus.

Lwm daim ntawv-factor connectors raug tso cai nyob rau hauv qhov chaw uas tsis yog XLR lossis RJ-45 yuav ua haujlwm. Tab sis qhov no tsuas yog rau thaj chaw uas lawv yuav raug teeb tsa mus tas li.

Yuav ua li cas kom tsis txhob DMX pitfalls?

Ib daisy-chained cov ntaub ntawv network nrog lub tsheb npav architecture yog doomed ua tsis tau yog tias tsis muaj txoj hauv kev los nrhiav thiab kho qhov yuam kev. Feem ntau cov teeb meem nrog kev teeb tsa tuaj yeem taug qab rov qab mus rau cov cables uas luv luv lossis phem dhau, lossis cuam tshuam rau electromagnetic (kev cuam tshuam thiab kev tawm zoo li qub).

Ntawm no yog ib daim ntawv teev cov lus qhia ntxiv.

1. Tau txais ib chav kuaj DMX512. Qhov no yog qhov yuav tsum tau yog tias koj xav nrhiav thiab kho qhov yuam kev.

2. Kev siv cov kab hluav taws xob zoo yog qhov tseem ceeb. Nrog DMX512, nws tsis yog ib lub tswv yim zoo los siv cov kab microphone sib npaug.

3. xyuas txhua lub cable kom paub tseeb tias nws zoo zoo ua ntej koj muab tso rau hauv.

4. Txhawb rov qab-theem tsib-pin XLR rau peb-pin XLR adapter cables thaum ua haujlwm nrog peb-pin DMX512 txais.

5. Xyuas kom tseeb tias koj tau teeb tsa lub ntiaj teb pins ntawm lub receiver. Xyuas kom tseeb tias tsis muaj kev cuam tshuam ntawm kev sib txuas ntawm PIN 1 thiab lub chassis los ntawm kev siv lub ntsuas txuas txuas ntxiv lossis multimeter. Muab ib qho DMX cais tawm ntawm chav tsev thiab lwm qhov ntawm cov saw hlau kom cov saw txuas mus. Qhov tsuas yog qhov chassis yuav tsum txuas mus yog qhov chaw tso zis ntawm lub console.

6. Siv cov choj zoo, raws li tus lej rau hais. Ib qho kev sib txuas uas tsis ruaj ntseg tuaj yeem tawg.

7. Cais cov kev sib txuas DMX. Koj yuav xav tau lub tshuab txiav tawm yog tias koj chav zaum kawg tsis muaj qhov txiav tawm.

8. Tshawb nrhiav seb koj yuav tau txais DMX tsheb ntau npaum li cas thiab, yog tias tsim nyog, siv cov kab tsav tsheb lossis cov kab sib cais. Txoj hauv kev yooj yim tshaj plaws kom koj DMX512 khiav tau zoo yog siv lub splitter. Koj yuav tsum txuas txhua yam khoom siv rau ib sab ceg ntawm lub splitter uas xaus rau hauv lub terminator.

9: Xav txog seb koj qhov chaw nyob tau teeb tsa li cas tam sim no. Nws yog ib qho tseem ceeb kom nco ntsoov tias qee lub teeb muaj DIP keyboards uas tau teeb tsa txawv dua li feem ntau.

10. Tsis txhob khiav DMX cables ntawm lub hwj chim thiab dimmer load cables.

11. Nco ntsoov nyeem cov khoom cov lus qhia ua ntej siv nws. Tsis muaj leej twg tau raug mob vim lawv nyeem phau ntawv.

Daisy chaining yog dab tsi?

Vim tias DMX teeb tuaj yeem txuas ua ke hauv cov saw hlau, ib qho DMX channel tuaj yeem tswj tau txog li 32 lub teeb. Yog li, qhov tso zis ntawm ib qho khoom siv tuaj yeem txuas nrog rau lwm qhov kev tawm tswv yim txog 32 zaug! Yog li, koj tuaj yeem tswj tau ntau lub teeb ntxiv yam tsis tas siv lub maub los loj (lossis muaj qhov xwm txheej vwm vwm). Nco ntsoov tias kev daws teeb meem ntawm 32 lub teeb yuav nyuaj. Nws tuaj yeem nyuaj, tshwj xeeb tshaj yog thaum lub sijhawm ua haujlwm nyob, tom qab ntawd daws teeb meem ntawm cov saw hlau nrog tsawg lub teeb.

Troubleshooting ntau DMX teeb meem

Thaum siv DMX hauv qhov hnyav sab nraum zoov, nws tsis yog qhov txawv txav uas yuav tsum tau kho cov teeb meem nrog DMX tswj.

Nov yog yuav ua li cas kho nws:

1. Puas yog DMX tua? Txawm hais tias muaj coob tus neeg xav tias koj tsis xav tau ib tug termination resistor. Kev hloov pauv me me rau DMX network, zoo li ntxiv cov kab hluav taws xob, tuaj yeem ua rau lub cev tawg lossis ua rau muaj kev cuam tshuam tsis zoo. Cov teebmeem zoo li lub dimmers flickering los yog lub teeb jerking thaum lawv yuav tsum du thiab khov kho.
2. Lub xeev ntawm cov xov hlau yog dab tsi? Kev txiav tawm yuav ua kom yooj yim tshem tawm cov teebmeem no. Yog tias tsuas yog ib qho ntawm cov ntaub ntawv khub tau tawg, DMX tseem tuaj yeem ua haujlwm hauv qee txoj kev. Yog hais tias lub teeb fixture tus maub los tau tawg, koj tuaj yeem siv lub jumper cable los txuas ncaj qha rau DMX kab. Yog tias nws ua haujlwm tam sim no, cov xaim yog qhov teeb meem.
3. Cov khoom puas ua haujlwm raws li lawv yuav tsum tau ua? Ntau yam tuaj yeem ua rau DMX receivers puas, tab sis xob laim tshwm sim ntau zaus. Yog tias lub cuab yeej txuas ncaj qha mus rau qhov chaw DMX txhim khu kev qha los ntawm kev txhim khu kev qha cable tab sis tsis teb rau DMX, nws yuav xav tau kev pabcuam.
4. Lub hardware txhawb DMX zoo li cas? Nws puas tuaj yeem mus rau qhov siab tshaj plaws? Raws li tus qauv DMX512, lub sijhawm ntawm DMX teeb liab lub zog tuaj yeem teeb tsa ntau yam. Tsis yog txhua lub cuab yeej tuaj yeem ua haujlwm puv sijhawm. Txhawm rau txhim kho qhov no, koj tuaj yeem hloov qhov nrawm ntawm koj cov khoom siv ETC cov khoom siv los ua haujlwm nrog cov khoom siv qeeb. Cov kab tam sim no ntawm ETC cov khoom ua haujlwm nrog DMX tso zis nrawm Max (default), Ceev, Nruab Nrab, thiab qeeb. Yog tias koj lub cuab yeej DMX tseem ua tsis ncaj ncees txawm tias nws txuas ncaj qha mus rau DMX tso zis tso zis, sim ua kom nrawm nrawm ntawm DMX tso zis kom pom tias qhov teeb meem ploj mus. Saib ntawm [DMX Ceev] tsab xov xwm kom paub ntau ntxiv txog DMX ceev.

Dab tsi yog qhov zoo thiab qhov tsis zoo ntawm DMX512?

Kev teeb tsa DMX tuaj yeem pab tau ntau lub sijhawm. Nws tuaj yeem ua qhov sib txawv loj hauv koj lub teeb pom kev zoo, tab sis nws kuj muaj qee qhov kev txwv.

Ib qho teeb meem nrog DMX yog tias nws xav tau kev xaim ntau dua. Kev xaim ntau dua yuav siv sijhawm ntau los teeb tsa. Nws yuav siv sij hawm ntau dua los npaj lub teeb pom kev ua ntej. Nws kuj yuav siv sij hawm ntau dua los kho lub teeb thaum lub sijhawm tshwm sim, uas tuaj yeem ua teeb meem. Tej zaum koj yuav xav tau ntau tus neeg los khiav lub teeb pom kev zoo, yog li nco ntsoov tias thaum ua nyiaj txiag.

Muaj lub caij nyoog uas lub suab-rau-lub teeb ib ntus uas tuaj nrog lub cuab yeej. Cov kev npaj suab-rau-lub teeb yuav zoo dua li txhua yam uas koj tuaj yeem npaj koj tus kheej. DMX tsis tuaj yeem siv los tswj lub teeb uas tsis zoo.

Ib qho ntawm ntau cov txiaj ntsig ntawm DMX yog tias nws ua haujlwm nrog ntau hom kev sib tw thiab hom, yog li koj tuaj yeem npaj lawv txhua tus ua tib yam. Koj tuaj yeem sib pauv tawm lub neej ntawd, feem ntau ua tsis zoo. Cov qauv uas tuaj nrog qee qhov teeb pom kev zoo rau koj tus kheej los ua kom chav tsev zoo dua thiab siv cov teeb pom kev zoo dua. Tsiv taub hau los yog scanners tuaj yeem ua teeb pom kev zoo uas tuaj yeem taw tes rau hauv kev tshwj xeeb.

Yuav kom tswj tau lub teeb kom yooj yim dua, lawv mus nrog cov suab paj nruag thaum lub suab paj nruag pib qeeb qeeb, thiab feem ntau cov kev pab cuam uas tuaj nrog lub khoos phis tawj khov, muaj peev xwm ua tau raws li qhov xav tau ntawm zaj nkauj lossis kev ua yeeb yam rau lub teeb pom kev zoo. Tig lub strobing ntawm zaj nkauj pib yog ib txoj hauv kev zoo los txhim kho cov yeeb yam rau cov neeg coob coob.

Art-Net

Art-Net yog kev sib txuas lus pub dawb. Lub Artnet xa DMX512-A teeb pom kev zoo tswj raws tu qauv thiab Chaw Tswj Xyuas Chaw Taws Teeb (RDM) raws li hauv Internet siv UDP.

[1] Nws cia "cov servers" thiab "nodes" (xws li lub teeb ntse ntse) sib tham.

Art-Net raws tu qauv yog ib qho yooj yim siv ntawm DMX512-A raws tu qauv tshaj UDP thiab siv nyob rau hauv ib cheeb tsam ntiag tug network xws li Ethernet. Nws yog siv los xa cov ntaub ntawv rau kev tswj lub teeb hla lub network. Nodes tuaj yeem "sau npe" rau "tus tshaj tawm" nodes, yog li nodes A thiab B tuaj yeem sau npe rau ntawm C, piv txwv. Lwm yam kev tswj hwm muaj xws li nrhiav cov nodes, hloov kho node tswj tsis tau, thiab xa cov lej sijhawm. Nws tseem tuaj yeem xa thiab tau txais cov ntaub ntawv hais txog lub teeb (C yuav unicast cov ntaub ntawv rau A thiab B).

KNX system info nyob rau hauv dmx512 tswj

KNX yog tus qauv qhib uas ua rau nws yooj yim dua rau cov tshuab hluav taws xob sib txawv hauv tsev sib tham thiab ua haujlwm ua ke.

• KNX tso cai rau koj tswj hwm ntau yam kev hloov kho tshiab, khoom siv, thiab kev ua ub no. Hauv koj lub tsev lossis kev lag luam, sai thiab ntseeg tau.

• KNX tshuab yog hloov tau thiab siv tau rau ntau hom tsev. Koj tuaj yeem siv nws rau tsev neeg ib leeg, cov tsev apartment loj, thiab chaw ua haujlwm.

• Kev tsim teeb pom kev zoo thiab kev tswj hwm kev ua haujlwm yog qhov tseem ceeb rau kev ua kom lub chaw ua haujlwm tau zoo dua. Nws txuag nyiaj ntawm cov nqi hluav taws xob thiab tiv thaiv ib puag ncig.

• Vim tias KNX teeb pom kev zoo yog hloov tau thiab muaj peev xwm ntau, lawv tuaj yeem pab txuag tau nyiaj ntau. Nws tuaj yeem txuag nyiaj ntawm cov nqi hluav taws xob thiab tuaj yeem txuag cov pa roj carbon emissions.

• Hloov lub ntim ntawm lub suab paj nruag lossis qhov ci ntawm lub teeb muaj qhov cuam tshuam zoo ib yam. Tsis yog qhov kev txiav txim hloov huab cua.

• Koj tuaj yeem ua kom sov, caw qhov chaw sab hauv tsev thiab cov teeb pom kev zoo nkauj sab nraud. Koj tseem tuaj yeem ua qhov chaw zoo rau kev ua haujlwm thiab nyob.Koj tuaj yeem teeb tsa lub teeb kom qhib thiab tawm ntawm qee lub sijhawm ua kom lub tsev lossis tsev muaj kev nyab xeeb dua.

• Koj tuaj yeem tswj hwm lub zog npaum li cas koj lub teeb siv los ntawm qhov deb nrog lub xov tooj ntawm tes thiab cov yam ntxwv tsis siv neeg.

FAQ

Ntsiab lus

Lub teeb pom kev zoo DMX tau ua tus qauv rau theem teeb pom kev zoo. Nws tuaj yeem tswj tau thiab sib txuas lus nrog cov teeb liab digital. Xyoo 1986, United States Institute of Theatre Technology (USITT) tuaj nrog nws. Lawv tsim nws kom cov teeb sib txawv ntawm ib theem lossis teeb tsa tuaj yeem sib koom ua haujlwm ua ke.

Feem ntau DMX maub los muaj 512 raws, thiab txhua tus tuaj yeem hloov qhov ci ntawm 0 mus rau 255. Rau nws ua haujlwm zoo, koj yuav tsum nkag siab tias nws ua haujlwm li cas. Koj kuj yuav tsum kawm cov kauj ruam uas koj yuav tsum tau ua ua ntej xa cov ntaub ntawv hla ib qho channel. Txhawm rau ua qhov no, koj yuav tsum paub cov hauv paus ntawm qhov system. Lub kaw lus zoo li yuav ua li cas hais txog ib qho kev sib tw lossis ua ib pawg ntawm cov khoom sib txuas uas nyob ze ua ke, zoo li cov nyob hauv ib lub taub hau pob los yog LED pobzeb vaj huam sib luag array.

Thaum koj paub cov hauv paus, koj tuaj yeem ua si ib puag ncig nrog ntau txoj kev xaiv. Koj tseem tuaj yeem ua koj cov teeb pom kev zoo. Koj yuav muaj peev xwm tswj tau koj lub teeb zoo li tus kws tshaj lij tom qab kev xyaum me ntsis.

LEDYi yog lub Hoobkas tshwj xeeb hauv kev tsim cov khoom siv zoo tshaj plaws LED strips thiab LED neon teeb. Peb muab DMX512 coj sawb teeb, DMX512 Neon Flex thiab DMX512 coj phab ntsa washer. Thov hu rau peb dawb yog tias koj xav tau.