60900-Public Address System Vietnam

Noi Bai International Airport Terminal 2 Construction Project Section 60000 Electrical Works Specification Division 60900 Public Address System ___________________________________________________________________________________________________

D N XY DNG T2 SN BAY QUC T NI BI

c tMc 60000 - CNG TRNH IN PHN 60900 - H THNG PHT THANH CNG CNG

60900 - Public Address System

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PHN 60900 - H THNG PHT THANH CNG CNG 60910 - PHM VI CNG VIC

1. Cng vic ca mc ny bao gm cc thit k, sn xut, cung cp, lp t, th nghim, vnhnh v bo tr h thng pht thanh cng cng hon chnh (PAS) v tt c c t ch r y, ghi trn bn v hoc theo hng dn ca K s.

2. Nh thu c trch nhim kim tra v pht trin thit k ca PAS v m bo rng h thngc xy dng t c t nht cc mc quy nh ca hiu sut. 3. Phm vi hot ng cho cc PAS l nh sau:

a) my trm iu khin (mn hnh gn kt trong t Rack vi phn mm thit lp h thng)vi mn hnh TFT 19 inch v bn phm.

b) Workstation Gim st cho Trung tm Thng bo ( my tnh bn vi cc phn mmthit lp h thng) vi mn hnh TFT 19 inch v bn phm.

c) Ma trn K thut s PAS d) Microphone pht thanh e) Microphone ca b phn cu ha f) H thng Thng bo bng ging ni k thut s cho Thng tin cho chuyn bay g) H thng Thng bo ti ch Bn t ngh) u a CD i) AM / FM Tuner

j) iu khin m lng t ng K thut s k) Amplifiers vi chc nng t ng thay i khi b hngl) Loa

m) H thng lin lc ni vng vi chc nng pht thanh vng n) Tt c tiu chun cn thit v t rack ty chnh c th kha v phng vi trang b vi phduyt ca K s

o) Tt c h tr, mc, c, lam cho vng v ph kin. p) Cp / dy, tt c cc loi cp / dy khc, ng dn, mng dy, kt ni chnh v tt c ccph kin. q) Ngun cung cp

r) Giao tip vi H thng bo chy60900 - Public Address System Page No. Spec. 60000 - 179


4. Cc cng vic sau y khng bao gm trong phm vi ca mc ny: a) Cung cp ni tht bao gm bn gh (bao gm thuc mc 31200) b) Vic cung cp, lp t loa (s) v i dy cui cng t cc phng thang my nhngchic thang my (bao gm theo mc 44500).

c) Vic cung cp t cp S dng chung, mng cp v h thng kt ni chnh c chia sv phi hp vi tt c cc mc ca cc cng trnh in thuc trch nhim ca Nh thu (c bao gm trong mc 60100). 60920 - M t H thng

1. H thng PAS s cho php pht thanh thng tin cng cng v cc chuyn bay v chi mnhc nn cho hnh khch v nhn vin, trong sut khu nh ga v khu vc bi xe.

2. H thng pht thanh cng cng cng c s dng nh l mt phn ca h thng thot nntrong khu vc cng cng. Khi mt tnh hung khn cp xy ra, h thng c s dng pht thanh i chng cc thng bo cn thit, bng microphone hoc tin nhn ging ni ghi m k thut s ti khu vc an ton s tn.

3. Cc thng ip hoc thng bo s c pht sng bng phng tin khc nhau nh nhiu loimicro v loa nm trong v xung quanh nh ga ng thi thng qua h thng chuyn mch ma trn m thanh k thut s. 60930 - THIT K H THNG / YU CU THC HIN 1. Ni chung H thng pht thanh Cng cng gm cc bung cho php cc chc nng sau:

i) Khuch i m thanh v chuyn trc tip ii) Qun l cp u tin v la chn vng iii) T ng pht thanh tin khn cp v thng tin chuyn bay. iv) gim st thng xuyn cc b khuch i v ng loa gn lin . v) Thay i t ng b khuch i trong trng hp Amplifier b hng vi) Vng v nhm ca khu vc xc nh cho loa phng thanh. vii) Phn tch k thut s mc ting n nn vi iu khin m lng viii) iu chnh m vo cp cho ma trn u vo / u ra knh ix) B x l tn hiu s (bao gm b hiu chnh v b lc) cho mi knh u ra


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b) H hng hoc tht bi trong h thng PA c pht hin trong vng 100 giy, to ra mtcnh bo trn mn hnh. ng thi, mt nht k li c to ra v c th c lu tr trn my tnh thng qua TCP / IP. H thng cng c thng xuyn kim tra v o gi tr tr khng loa ngn chn kh nng in th qu ti hay cc li h thng dy dn.

c) Mt b khuch i d phng c c cung cp v lp t trong mi mt t. d) Cc PAS s c yu cu hot ng m khng s c lin tc trong 24 gi mt ngy, 365ngy mt nm m khng c thi gian bo tr. e) Thit k v lp t ca PAS phi m bo rng h thng c kh nng m rng trong tng lai.

f) B pht thanh Intercom c th c s dng nh microphone bng cch chn bt k khuvc / nhm ca cc khu vc h thng pht thanh, vi hot ng bm quay s d dng.

g) D dng b sung cc b Intercom bng cch n gin kt ni Intercom vi SCN Hub, vlm cc thit lp cn thit ca cc phn mm chuyn dng. 2. Phn vng /Mch /u tin

a) Tt c cc loa phng thanh c chia thnh "mch" nh hin th trn bn v. Tt c ccvng cng cng phi c kh nng pht thanh v kim sot trong tng mch.

b) "Vng" l mt nhm cc "mch" nh trn cc bn v. Mi vng s c chn bng ntchn vng ca micro d dng cho hot ng pht thanh.

c) H thng s cho php pht thanh t nhiu a im trong nh ga v bng ging ni thngtin lin lc mt chiu trong trng hp khn cp. Cc chc nng ph l cung cp nhc nn khi cn thit.

d) Khi thng ip hoc m nhc s c ng thi pht i t mt s a im, cc ma trnPAS s c th la chn u tin ca thng ip pht thanh.

e) Mc u tin c quy nh nh th hin trn bn v. f) Thng bo khn cp s c u tin cao hn bt k thng bo no. Ngoi ra, PAS s mbo pht cc tin t ng thot nn c ghi t ng t trc trong trng hp chy, hay iu kin hot ng nguy him.

g) Ty thuc vo ting n xung quanh cc khu vc s nht (khu ly hnh l n, snhn, khu kim sot h chiu v khu vc checkin), cc cao m thanh pht thanh c t ng iu chnh cung cp tin pht mt cch r rng . Chc nng ny c thc hin bng vic phn tch mc ting n nn vi micro cm ng ting n. Ly mu ca cc mc ting n nn c thc hin tr i mc m lng ca m nhc nn BGM lm m lng BGM n nh.

3. C s Thit k m thanh a) H thng phi c thit k c kh nng cung cp mc p lc m thanh trn cp nghe trong cc vng c ch nh. Cp mc nghe phi c tnh t 1,5 m cao trn mc sn.60900 - Public Address System Page No. Spec. 60000 - 181


i) Mc nghe cp 80dB cho cc khu vc vn phng v phng khch. ii) Mc nghe cp 85dB cho cc khu vc ni chung v cng cng. b) N c gi nh rng ting n xung quanh khng qu 70dB trong cc khu vc chung vcng cng.

c) Gi tr RASTI ln hn 0.45 phi c duy tr cho 80% din tch bt k ang phc v.Thi gian vang ca cc khu vc khc nhau s c gi nh l gia 2,0 v 3,5 giy cho cc khu vc ln, v ln hn 1,5 giy cho cc khu vc khc. 4. Microphones

a) Cn c bng iu khin micro pht thanh xa trong phng thng bo trung tm PA vi ccmy trm PC Monitor, vi b pht thanh Intercom..

b) Cc microphone pht thanh xa s c microphone hon chnh vi mt cn un cong linhhot , 20 phm bm ch cc vng / nhm , mt phm bm ni pht thanh khng b kha, n LED ch khu vc pht thanh s c chiu sng khi trong s dng.

c) Pht thanh c th c pht t cc microphone pht thanh xa chn tt c vng hocnhm ca cc vng.

d) Khi khu vc pht thanh PA c la chn, mt chung u tin c nghe, theo sau lli pht thanh trong khu vc.

e) Microphone pht thanh xa ca lnh cu ha c cung cp trong khu Kim sot trungtm d phng CCR, Trung tm Kim sot Phng cho thng bo tnh trng s tn khn cp v th tc khn nguy.

f) Microphone pht thanh xa ca lnh cu ha trong phng kim sot trung tm d phngc u tin cao nht v c c th ghi ln tt c cc thng bo khc.

g) T tay cm ca my pht thanh Intercom , thng bo ra khu vc xung quanh l sn sng,cng nh thng bo nhn tin vng / nhm.

h) C s c thit b thng bo bn t ng trong khu vc Check-in,.i vi thng bo bn t ng, s dng b thng bo k thut s . Ti a 4 tin nhns c th c ghi li v kch hot bng 4 nt trong bng iu khin pha trc. Ghi li cc thng bo k thut s l do Microphone hoc CD player thng qua cp m thanh, hoc USB chuyn t my tnh.

i) S c th cho h thng hot ng vi cc micro khc nhau hot ng ng thi, h thngs pht thanh khng c xung t trong khu vc c gi bi cc micro. 5. Thng bo t ng

a) Cc h thng con thng bo t ng c thit k cho thng bo khn cp v thng tinchuyn bay.


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b) Hai ngn ng chnh thc ca ting Anh v Vit Nam c s dng cho cc thng bo tng. 6. H thng trung tm

a) H thng trung tm s c mt h thng gim st lin tc gim st cc dng loa, bkhuch i , v ma trn chuyn. Ti thiu, cc h thng gim st c trch nhim gim st r r ra mt t, ngn mch, v h mch.

b) Tt c lp trnh s c thc hin thng qua mn hnh v bn phm ca h thng trungtm

c) Cc n v thng bo ti ch c quy nh thng bo lp i lp li. Cc n v c chophp ghi m thng ip c v pht li khi c yu cu.

d) Tin nhn c ghi trc cn c ghi vo ROM trong mch chnh ca h thng ny. e) C c m nhc nn n cc khu vc c la chn. N s c th lp chng trnhtrc bt k m nhc u ngun no cho cc vng bt k . Ngun cung cp s c mt ngun lin tc my nghe nhc a nh gn v u thu sng AM / FM . 7. Thit b

a) Cc thit b chnh phi c t trong t c gi thit b tiu chun 19-inch. b) H thng trung tm c kim sot bng vi x l v c hot ng linh hot v d dng.Cc chc nng c th c lp trnh v thay i d dng.

c) H thng k thut s ma trn s c cung cp chuyn vng cho cc tuyn u vo cah thng v u ra l cc mch loa. H thng c tnh linh hot ca m rng. Cc vng c th hin trn cc bn v.

d) B khuch i s l loi tiu chun c th trao i (ti a 2 kch thc tiu chun chophp). B khuch i lun bao gm mt u vo microphone ph tr min ph cho php kt ni vi mt micro trong trng hp cn b qua phn Kim sot chnh.

e) Cc b iu chnh m sc c trang b ni ghi trn Bn v iu chnh m thanhtrong vng. Ngoi ra, chc nng kim sot cng hng t ng cho php nh gi tnh trng m thanh ca vng, v thit lp hu ht cc thng s m thanh ph hp t ng ci thin vic pht thanh r rng.

f) B iu khin m lng t ng (AVC) s c cung cp ch cho vng ca check-in,quy check-in , hnh l n v snh n . Micro cm ng ting n xung quanh c b tr trn trn ca cc khu vc ny.

g) B iu khin m lng t ng (AVC) phi c kh nng, i) Ly mu mc ting n xung quanh, ngoi tr trong cc cuc pht thanh (ly mub chn trong khi pht thanh thc t).

ii) Thay i m lng ra b p cho nhng thay i theo ting n cp trung bnh8. Loa phng thanh60900 - Public Address System Page No. Spec. 60000 - 183


i) Mt s loi loa c cung cp nh th hin trn bn v. ii) i vi mi mch dng loa, cch u ca cp s l phng php 3 dy. iu ny s chophp cho mt thng bo khn cp c nghe ngay c khi b suy gim c tt. Kch thc ti thiu ca dy s c 1,25 mm2 (# 16 AWG), dy ng.

9. Khu xe v Cu cn a) Loa truyn thanh c ci t trong khu vc u xe m cn trn khu vc cu cn cho nv i , ch yu l dnh ring cho thng bo cc tin nhn. Tuy nhin n th cng c th pht thanh bt k thng bo chung chung hay c th. H thng nh vy khng phi l c lp vi PAS ni chung.

b) B khuch i cn thit cho cc bi u xe v cu cn c tch hp vo t PAS chnh vbo mch.

c) Lp t loa ngoi tri cho khu u xe hi v cu cn nh th hin trn bn v. d) Mi lp t ca nhng loa chu thi tit s c t chnh hai ct n ca khu u xe.Chiu cao gn s l 3m trn mt t. Kch thc ti thiu ca dy dn s l 1.5mm , ng. 10. Ph tng v ni tht cho cc h thng kim sot.

a)

Ph tng v c ph hp cn thit v h tr cc trang thit b cho h thng ny c ci t trong cc phng kim sot Trung tm v cc phng tng t, nh bao gm trong phm vi mc 31210 v 31220.

b)y .

Cc Nh thu phi m bo rng cc yu cu ca mc 31210 v 31220 v di y l tun th

c)

Tt c dy cp s c nh tuyn mt cch an ton, t tng my tnh ti cc ng ni v ph kin v sau n tng thit b, qua khu dnh ring t thch hp v mng cp , theo cch nh vy trnh nhng ng tc tnh c m c th nh hng n kt ni. Cp s c ci t theo cch nh vy s c n.

d)

Ph tng v ph kin s dng cho h thng, c thit k v ci t theo cch nh vy thch ng vi ci t kt ni cc m un c bit theo Phm vi mc 60400, s cho php ci t cc cm in v cm mng RJ45.

e)

Cc Nh thu phi m bo rng cc ci t b tr hp l, loi hnh , v tr v s lng cm in Outlets (Kt ni vi cung cp ngun bnh thng hoc ngun Khng tt), cng nh cc v tr RJ45 (Kt ni vi in thoi hoc d liu), c m bo.

f)

Cc Nh thu cng phi m bo rng vic lp t ph tng v ph kin dnh ring cho h thng PAS khng gy tr ngi cho hot ng ca H thng khc cng c ci t trong cc phng iu khin trung tm. 60935 IU KHON RING BIT 11. Mu60900 - Public Address System Page No. Spec. 60000 - 184


a) Sau khi xem xt li bn v, v trc khi pht hnh t hng, nh thu cung cp mt mu ca mi loi micro v tng loi loa: 60940 - YU CU XY DNG CHI TIT 1. Vt liu Ni chung b) Tt c cc hng mc thit b, my v ph kin c thc hin theo tiu chun JIS hin ti v Tiu chun IEC.

c) Cc ton b h thng vi tt c c cu thnh phn, cc thit b v ph kin bao gm cmicro, loa, iu khin, phng t v thit b c cung cp bi cng nh sn xut vi s chp thun ca K s.

d) Tt c cc lp t, thit b v ph kin s c tng thch vi tt c cc rng buc pdng v an ton v bo v.

e) Tt c Nh my, thit b v ph kin phi ph hp vi mc ch d nh v mi trng,v d: kt dnh nc, nhit v m mi trng xung quanh, khng tr, vv

f) Tt c trang thit b ca h thng t ngoi tri c bo v bi chng in p tng tbin. 2. Yu cu c bit

a) H thng ma trn K thut s / Qun l h thngi) S u vo m thanh, Max, 64

ii) S lng u ra m thanh; Max.128 iii) Kim sot u vo; Max. 776 iv) Kim sot u ra; Max. 776

v) Kim sot u tin; 512 bcvi) Giao din mng: TCP / IP, 10BASE-T/100 BASE TX Circuit, CAT-5 STP

vii) Nht k s c; 1000 s kin x 32 tp tin. viii) Th thng bo khn cp bng ging ni (Flash Memory Card)ix) S microphone th kt ni t xa: nh ghi trn bn v thm 20% khng gian cho cc kt ni trong tng lai.

b) H thng ma trn K thut s / B u vo m thanhi) Tn s ly mu: 48kHz

ii) m thanh u vo 8 u vo / 1 n v u vo, xy dng m-un60900 - Public Address System Page No. Spec. 60000 - 185


iii) Kim sot vo / ra; 16 vo 16 raiv) Giao din mng: 2 mch 100BASE-TX, CAT-5 STP

c) H thng ma trn K thut s / B m thanh ra i) Tn s ly mu: 48kHz, B vi x l tn hiu s bao gm c 6 b lc, nn v tr ii) m thanh ra, 8 u ra v Amplifier ch 0dB, 600ohms iii) Tn s p ng: 20-20,000 Hziv) D / A Converter PCM 24bit v) Giao din mng: 2 mch 100BASE-TX, CAT-5 STP

vi) Kim sot vo / ra; 8 vo 8 ra d) Microphone pht t Xa:i) p ng tn s 100 - 20kHz

ii) 20 nt n nhm / vng , vi nt EMGiii) S / N T l di 60dB

iv) Microphone mt hng t in ngng microphone vi AGC (ON / OFF la chn) v) c xy dng bn trong ting chung, gim st c th s dng bi kim sot nhy Microphone bn trong loa, gim st iu khin m lng loa, ting chung (iu chnh bng cch s dng phn mm)

vi) n bo c in , n bo hng, n bo chuyn i chc nng, n bo dp my,n bo pht thanh

vii) Loa gim st c xy dng bn trong e) H thng Thng bo bng ging ni K thut s i) Thu m , MPEG 1 AUDIO LAYER3 (MP3) ii) Tc truyn: 64kbps, 96kbps, 128kbps Ly mu nh gi: 32kHz hoc 44.1kHz iii) Phng tin truyn thng; Compact Flash Card Max.8GB, ngh th TOA iv) B nh ; th nh flash ATA v) Tn s p ng FREQ.RESPONSE; 50-20kHz3dB44.1kHz Ly mu, 1kHz vi) Chun mng : ARP, IP, ICMP, IGMP, TCP, FTP60900 - Public Address System Page No. Spec. 60000 - 186


vii) Cu n; Max. 512viii) Cm t; Max; 65,536 ix) S u ra ng thi; Max. 16 x) m thanh u ra cp; 0dBv

xi) Mng Giao tip: 10BASE-T / 100BASE-TX t ng m phn f) iu khin m lng K thut s T ngi) Tn s ly mu; 48kHz

ii) Mo ting ; Theo 0,006%, 1kHz, +4 dB * u vo / u ra (20-20,000 Hz BPF) iii) Chc nng kim sot ting n T ng; o mc (4 n LED). BGM / chc nngkim sot mc pht thanh, chc nng t ng cm bin u vo so vi mc tham chiu, chc nng iu chnh cm bin u vo thoe mc tham chiu , mu thit lp thi gian: 10 s, 20 s, 30 s, 1 pht, 5 pht,

iv) t t l thit lp (Ting n xung quanh; u ra tn hiu cp) 6: 3, 5: 3, 4: 3, 3: 3, 3:4, 3: 5, 3:06 DB

v) Tn s thit lp o ting n xung quanh: 20 - 20.000 Hz, 3 im vi) Chc nng khc; chuyn i cng sut o (cm bin u vo), chc nng kha g) u thu sng AM / FMi) Phm vi iu chnh; FM: 87,9-107.9HMz (200KHz bc) AM; 520-1710KHz (10KHz bc)

ii) Antenna u vo-FM; 300 ohms cn bng, AM; ng ten vngiii) m thanh u ra-FM;-7dBV + 4dBV h) B khuch i

i) Cng sut in; 120W hoc 240W hoc 420Wii) u ra tr khng: 83 ohms/ 41 ohms / 24 ohms iii) Tn s p ng; 40-16,000 Hz + / -3dB

iv) T l S / N; Hn 80dB v) Mo m; t hn 1% ti cng sut xp hng i) Pht thanh ni vng Intercom60900 - Public Address System Page No. Spec. 60000 - 187


i)

m thanh Thng. Phm vi: 300 - 7000Hz H thng truyn dn, h thng truyn dn 2 dy tc 160kbps trit tiu ting

ii)vang

iii)iv)

Phng php truyn ; Ni trc tip hoc qua ng nghe cm tay Hin th; ch v s mn hnh LCD Panel (16 k t x2)

v) Loa ngoi ; 0.6W, 8 Ohm, loa hnh nn 5.7cm j) Loa v B tiu mi) c im k thut ca tt c loa v b suy gim phi c th hin trn bn v.

k) My trm iu khin i) My trm iu khin phi kim sot v gim st ton b h thng PA v c ci ttrong t cc thit b c gi .

ii) Workstation c thc hin theo vi cc yu cu ca mc 10096. l) My trm Gim st i) My trm gim st th gim st tt c cc tnh trng v bo ng trong ton b h thngPA v bo ng chy truyn t cc h thng bo chy v pht hin chy

ii) My trm c ci t trong cc phng thng bo. iii) My trm c thc hin vi cc yu cu ca mc 10096. 2. T cp in . a) Tng thch vi cc yu cu ca mc 60100. 3. Cng vic Cp a) Tt c cc dy cp, ng dn v cc khay s dng c thc hin theo yu cu ca mc60030, 60040 v 60050.

b) Khi cn thit thc hin pht thanh tin s tn, tt c cc cp ca h thng PAS ci t ktni vi loa truyn thanh bn trong khu cng cng phi l loi c kh nng chu nhit, tun th vi yu cu ca mc 60030 v quy nh p dng.

60950 - H THNG IU KHIN

1. Cung cp in cho h thng PAS s c theo di t xa bng BMS thuc mc 61300. 2. Di thit b kt ni c cung cp trong bng iu khin ca BMS hoc ci t trong mtbng iu khin ring ( c s dng nh l im giao tip gia BMS v H thng PAS).

3. Tt c dy ni v ph kin cn thit t cc bng vo bng giao tip ca BMS phi c cungcp theo mc 60.900 ny.60900 - Public Address System Page No. Spec. 60000 - 188


4. Tt c cm bin, r le v cc ph kin cn thit i vi trng thi v kim sot cc mch nhsng phi c cung cp.

5. Tt c cm bin, r le v cc vt liu khc, thit b, tt c tay ngh c s dng cho giaodin kt ni s ging nh c chp thun cho mc 61200 v 61300. 60955 - CNG VIC KT NI 1. H thng PAS s c kt ni vi cc h thng khc nh nu trn Bn v, bao gm:

a) Mc 44500 - Thang my i) Nh thu phi cung cp v lp t cp t cc n v trung tm PAS ti bng iukhin thang my cung cp mt hp kt ni v chm dt vic i dy cp. Vic cung cp v lp t loa (s) v i dy cui cng t cc phng my ca thang my ti cc thang my c tnh theo mc 44500.

b) Mc 60.600 H thng bo chy v pht hin chyFADS i) H thng thng bo khn cp s c giao tip vi h thng bo chy v pht hinchyFADS)

ii) Cp gia hai h thng c tnh nh trong phm vi ca FADS. 2. Tt c vt liu, thit b v tay ngh c s dng trong giao tip kt ni tng t nh cchp thun trong mc 61200 v 61300. 60960 - CUNG CP IN

1. in cung cp c thc hin theo mc 60010 Yu cu chung ca cng trnh in.60970 - KIM TRA /VN HNH

2. Tng quan a) Tun theo cc yu cu ca mc 60020. b) Cc Nh thu phi thc hin hon chnh hot ng v th nghim hiu sut ca H thngv tt c cc my, thit b trong chng minh rng cc mc quy nh ca hiu qu t c trong thc t.

3. Kim sot Cht lng cc thnh phn lin quan n cc tiu chun m xc nh a) Cc Nh thu phi cung cp chng nhn ph hp tun th ca nh sn xut hoc nhnhp khu cc thnh phn, xc nhn rng sn phm c cung cp tun th vi cc tiu chun c xc nh .

b) Cc thnh phn s c nh du m bo rng n c th c xc nh v s dngtrn ni lm vic khng c kh nng gy nhm ln.60900 - Public Address System Page No. Spec. 60000 - 189


4. Hon thnh vn hnh v th nghim Hiu sut trn thit b a) Sau khi hon thnh lp t cc h thng, cc th nghim vn hnh v hiu sut thc hinphi din ra trong mi trng hot ng ca d n. b) Cc ni dung ca cc bi kim tra c t ra c th di y:

i) Th nghim hot ng h thng ca tt c cc thnh phn h thng. ii) D phng ca phn cng, tc CPU d phng, ngun cung cpvviii) Tt c cc xt nghim khc theo yu cu ca cc k s chng minh vic tun th c im k thut.

c) Tt c khm nghim, d liu kim tra s c gi n cc k s. d) Th nghim dung sai v cht lng cho cng tc t, cng vic c th v vt liu khcc lin quan v tay ngh phi theo cc mc c lin quan c im k thut ny . 60980 - CNG VIC LIN QUAN

1. Yu cu o to Ring a) Tun theo vi cc yu cu ca mc 60021. 2. Cng c / Ph tng Ringa) Cc cng c / Ph tng sau y c cung cp ngoi cc yu cu ca mc 60021.

i) Nm (5) loa cho tng loi ii) Nm (5) b tiu miii) Hai (2) micro ca tng loi


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60900-Public Address System Vietnam