1. Taw qhia rau DMX

DMX (Digital Multiplexing) yog lub caj qaum ntawm cov theem niaj hnub thiab kev tswj vaj tsev teeb pom kev zoo. Keeb kwm los ntawm cov kev xav tau ntawm kev ua yeeb yam, nws tso cai rau ib tus maub los xa cov lus txib kom meej rau ntau pua lub teeb pom kev zoo, pos huab tshuab, LEDs, thiab txav taub hau ib txhij. Tsis zoo li cov analog dimmers yooj yim, DMX sib txuas lus hauv cov "pob ntawv", ua rau cov neeg tsim qauv tsim kom muaj kev sib tw ua ke ntawm cov xim hloov, cov qauv strobe, thiab cov teebmeem synchronized.

2. Keeb kwm luv luv ntawm DMX

DMX tau tshwm sim nyob rau hauv nruab nrab-1980s raws li kev lag luam nrhiav los hloov cov kev cai analog tsis sib xws. Xyoo 1986 DMX512 tus qauv txhais tau hais tias kev xa mus txog 512 cov ntaub ntawv raws li cov ntaub thaiv npog, kev sib txuas lus ntawm cov hom thiab cov khoom siv. Txawm hais tias muaj cov txheej txheem tshiab, DMX512 tseem yog qhov siv dav tshaj plaws thiab tau txais txiaj ntsig zoo rau nws txoj kev yooj yim, kev ntseeg tau, thiab kev ua haujlwm ntawm lub sijhawm.

3.Core Cheebtsam ntawm DMX Systems

 3.1 DMX Controller

 "Lub hlwb" ntawm koj cov khoom siv:

• Kho vajtse console: Lub cev tswj vaj huam sib luag nrog faders thiab nyees khawm.

• Software Interface: Ib daim ntawv thov PC lossis ntsiav tshuaj uas qhia cov channel rau sliders.

• Hybrid Devices: Muab ib qho kev sib xyaw ua ke nrog USB lossis Ethernet tso zis.

 3.2 DMX Cables thiab Connectors

Kev xa cov ntaub ntawv zoo yuav tsum:

• 5-pin XLR cable: Qhov no yog tus qauv kev cai, tab sis 3-pin XLR cables feem ntau siv thaum pob nyiaj siv nruj.

• Splitters thiab Booster: Faib cov teeb liab hla ntau lub cables yam tsis muaj hluav taws xob poob.

• Terminator: Ib qho 120 Ω resistor kawg ntawm cable tiv thaiv cov teeb liab cuam tshuam.

 3.3 Fixtures thiab decoders

 Teeb pom kev zoo thiab cuam tshuam sib txuas lus ntawm DMX:

• Fixtures nrog integrated DMX connectors: Tsiv taub hau, PARs, LED strips.
• Sab nrauv Decoders: Hloov cov ntaub ntawv DMX rau PWM lossis analog voltage siv nrog strips, raj, lossis kev cai fixtures.
• UXL Cim npe: Qee cov khoom siv txhawb nqa wireless DMX, xav tau lub transceiver module es tsis txhob siv cables.

4.DMX sib txuas lus li cas

4.1 Cov qauv teeb liab thiab cov channel

DMX xa cov ntaub ntawv hauv pob ntawv txog li 513 bytes:

1. Pib Code (1 byte): Ib txwm xoom rau cov qauv teeb tsa.

2. Cov ntaub ntawv Channel (512 bytes): Txhua byte (0-255) txiav txim siab siv, xim, yias / qaij, lossis cov nyhuv nrawm.

Txhua lub cuab yeej tau txais nws cov channel thiab teb raws li tus nqi ntawm cov byte tau txais.

  4.2 Chaw Nyob thiab Lub Ntiaj Teb

1. Ib pawg channel muaj 512 channels.

2. Rau kev teeb tsa loj dua, ntau pawg channel tuaj yeem ua daisy-chained lossis xa hla Ethernet (ntawm Art-NET lossis sACN).

3. DMX Chaw Nyob: Tus naj npawb xov tooj pib rau kev sib tw - qhov no yog qhov tseem ceeb los tiv thaiv ob qhov kev sib tw los ntawm kev siv tib cov ntaub ntawv.

5.Setting ib qho yooj yim DMX Network

5.1 Npaj Koj Cov Txheej Txheem

1. Muab Cov Khoom Siv Hluav Taws Xob: Kos ib daim ntawv qhia ntxhib ntawm qhov chaw thiab sau txhua qhov kev sib tw nrog nws qhov chaw nyob DMX thiab tus lej xov tooj.

2. Ntsuas Cable Length: Ua raws li qhov pom zoo tag nrho cable ntev (feem ntau 300 meters).

5.2 Cov lus qhia txuas thiab cov kev coj ua zoo tshaj plaws

1. Daisy Chain: Txoj kev cables los ntawm cov maub los rau fixture mus rau tom ntej fixture rau termination resistor.

2. Kev Tiv Thaiv Kev Tiv Thaiv: Tsis txhob tangling cables thiab khaws cia kom deb ntawm cov kab hluav taws xob kom txo tau kev cuam tshuam.

3. Sau tag nrho Cables: Sau tag nrho ob qhov kawg ntawm txhua lub cable nrog tus lej channel thiab pib channel.

5.3 Kev teeb tsa thawj zaug

1. Muab Chaw Nyob: Siv lub cuab yeej ntawv qhia zaub mov lossis DIP keyboards.

2. Power-On Test: Maj mam nce tus maub los qhov ci kom ntseeg tau tias cov lus teb raug.

3. Kev daws teeb meem: Yog tias ib lub cuab yeej tsis teb, hloov cov kab xaus, xyuas qhov kev txiav tawm, thiab paub meej tias txoj haujlwm channel.

6. Kev siv tswv yim ntawm DMX

1. Concerts thiab Festivals: Coordinate stage lighting, motion graphics, and fireworks with music.

2. Theatrical Productions: Pre-program subtle fades, xim signals, thiab blackout sequences.

3. Architectural Lighting: Ntxiv qhov tseem ceeb rau lub tsev facades, txuas hniav, lossis kev kos duab rau pej xeem.

4. Tradeshows: Siv dynamic xim gradients thiab dot signals los qhia koj lub rooj muag zaub.

7.Kev daws teeb meem ntau DMX teeb meem

1. Flickering pab kiag li lawm: Feem ntau tshwm sim los ntawm ib tug faulty cable los yog tsis muaj termination resistors.

2. Cov khoom siv tsis teb: Txheeb xyuas qhov teeb meem tsis raug lossis hloov cov kab tsis raug.

3. Kev tswj tsis sib xws: Ceev faj ntawm kev cuam tshuam ntawm electromagnetic-rewire cov cables lossis ntxiv cov hlaws ferrite.

4. Kev faib tawm ntau dhau: Yog tias ntau dua 32 cov khoom siv sib koom ib cheeb tsam, siv tus neeg faib khoom nquag.

8. Cov txuj ci siab tshaj thiab kev siv tswv yim zoo

1. Pixel mapping: Siv txhua lub LED ua ib qho kev sib cais los kos cov yeeb yaj kiab lossis cov yeeb yaj kiab ntawm phab ntsa.

2. Timecode synchronization: Txuas DMX cues rau suab lossis video playback (MIDI / SMPTE) rau kev ua yeeb yam zoo kawg nkaus.

3. Kev sib tham sib tswj: Kev sib koom ua ke cov lus tsa suab lossis cov neeg tuaj saib ua rau ua kom pom kev sib tham sib ntau dua.

4. Kev tsim kho tshiab wireless: Rau qhov chaw uas cov cables tsis siv tau, siv Wi-Fi lossis cov cuab yeej RF-DMX.