C.17 Master Antenna - VN - Centrepoint

5/24/2018 C.17 Master Antenna - VN - Centrepoint

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MASTER ANTENNA TELEVISION

The English language version prevails. u tin phn Anh ngkhi c tranh chp.

Centrepoint Page 1 of 13 of C.17 18 September 2007

CABLE TELEVISION HTHNG TRUYN HNH CP

1 GENERAL 1 TNG QUAN

1.1 FUNCTIONAL DESCRIPTION 1.1 M T

A simple cabling system and CATVreception equipment are covered underthis scope.

Cable television channels are proposedto be distributed encoded, and accessedby individual apartments on a user paysbasis.

The underground cable feed supplier isto be nominated by the building owner

Provide all coordination with the cable

TV company. Provide leadin conduitsfrom nominated pit within the street tohead end location for their connection.

Chng ny ch bao gm mt h thngcp n gin v cc thit b thu ca hthng CATV.Cc knh truyn hnh cp c phnphi c m ho, v truy cp bng cccn hc lp c trtin.

Nh cung cp cp truyn hnh ngm sc chnh bi chta nh.Hp tc cht chvi cng ty truyn hnhcp. Cung cp ng dn cho vic kt nithchnh trn ng n vtr thitbchnh.

1.2 CROSS REFERENCES 1.2 THAM CHIU CHO

GeneralComply with the General requirementsworksection.

Tng qutPh hp vi chng Nhng yu cuchung.

Related worksectionsRefer to the following worksections:

Electrical General Requirements, PowerCables, Cable Support & Duct Systems

Nhng chng lin quanTham chiu n cc chng sau:Nhng yu cu chung vin, Dy cpin v dy dn, H thng ng in v

thang mng cp.

1.3 STANDARDS 1.3 TIU CHUN

GeneralSystem design and performance: ToAS/NZS 1367.

Cabling and component installation:Comply with the recommendations ofAS 3815.

Earthing and segregation: ToAS/NZS 3000.

Safety requirements: To AS/NZS 1367

Section 2.Electromagnetic compatibility: ToAS/NZS 1367 Section 3.

Tng qutHthng c thit kv thc hin theotiu chun AS/NZS1367Lp t cp v cc thnh phn cu kin:ph hp theo cc yu cu ca tiu chunAS 3815.

Ni t v schia tch: theo tiu chunAS/NZS 3000

Cc yu cu van ton: theo tiu chun

AS/NZS 1376 - phn 2Tnh tng hp v in t: theo tiuchun AS/NZS 1367 phn 3

1.4 DESIGN 1.4 THIT K

DrawingsContract drawings show generic designprinciples and design intent only.

Cc bn vCc bn v cho hp ng ch a ranhng qui lut thit ktng quan v thit k.

General CATV System RequirementsThe CATV system shall meet or exceedthe following general criteria:

- There will be no visible degradation ofpicture quality from the CATV systemsinput to any CATV distribution point

Yu cu chung ca hthng CATVHthng CATV phi thomn cc tiuchun tng qut sau hoc hn thna:

- Khng c s gim st v cht lnghnh nh t u vo h thng CATVn bt kmt im phn phi CATV


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- The standard measurement instrumentfor signal strength will be a calibratedsignal strength meter.

- Where possible all UHF channels shallbe converted to VHF for distribution onthe CATV system..

- The system shall broadcast stereoquality audio.

no khc.

- Vic o lng tiu chun cho cng tt ca tn hiu s c kim trabi ng ho cng tn hiu.

- ch no c nhn c tt c ccknh sng UHF s c chuyn ithnh sng VHF phn phi choton bhthng CATV.

- H thng s pht i cht lng mthanh ni.

CATV Distribution SystemSpecificationsThe frequency response of the system(excluding amplifiers) shall pass 5.0MHz to 1000 MHz frequencies withnominal loss.

The amplitude response for thisspectrum shall be 4 dbmv with respectto the line represented by normal cable

tilt.Visual carrier level in each room shall beno lower than 2 dbmv.

The variance between any adjacentchannels shall not exceed 2 dbmv.

The variance between any non adjacentchannels shall not exceed 12 dbmv or 3dbmv per 105 of bandwidth.

Room to Room isolation shall be greaterthan 20 dbmv

For multiple trunk systems, RF isolation

shall be 60 dbmv between each trunk.

Visual carrier to noise ratio on anychannel shall be at a minimum of 45dbmv at any

TV outlet (50 to 60 dbmv optimum).

Reflection in the system shall be greaterthan 40 dbmv below the respectivepicture carrier.

Taps, Splitters and other passiveequipment shall be totally shielded usinga sealed metal or aluminium cast tominimise radiation and ingress.

PAL or Balum type outlets shall not beused within the CATV system

Individual outlets fed from remote tappoints shall be terminated at the TVoutlet using F-81 or F-Barrel connectors.

All connections shall be one piece F typeconnectors.

Taps and Splitters used shall be designedto pass 5.0 MHz to 1000 MHz (orgreater). If the last Tap on the riser is nota terminated tap, a 75 Ohm terminatorshall be installed to terminate the end ofthe line.

Cc yu cu k thut phn phi hthng CATVp ng tn sca hthng ( ngoi trcc b khuch i) s c tn s t 5.0MHz ti 1000 MHz vi tn tht bnhthng.p ng bin cho hnh nh ca hthng ny s l 4 dbmv so vi nghing bnh thng ca cp nh c trnh by.Cp truyn i c th o c trongmi phng skhng thp hn 2 dbmv.Khang thay i gia bt khai knh kcn nhau skhng vt qu 2 dbmv.Khang thay i gia bt k hai knhkhng kcn nhau skhng vt qu 12dbmv hay 3 dbmv trn 105 MHz cabng thng. cch ly t phng ny ti phng kiasln hn 20 dbmv.i vi cc hthng i trong cc mng

hp c nhiu nhnh r, cch m RFsl 60 dbmv gia mi mng hp.Tsn truyn i c tho c trnbt k knh no ti thiu s l 45 dbmvti bt k vtr no.u ra TV ( 50 n 60 dbmv l tt nht )Sphn xtrong hthng sl ln hn40 dbmv tng ng vi stryn ti hnhnh.Cc bmc rtn hiu, bchia cc thitbthng khc sc ng kn hantan khi sdng kim lai kn hay nhmc lm gim thiu sbc xhay s

thm nhp tbn ngai.Cc u ra lai PAL hay Balum skhng c sdng trong hthng ny.Cc u ra ring bit c ko dy tnhiu ti t cc im r nhnh xa sc chm dt ti u ra TV nh ccu ni F-81 hay F-Barrel.Tt ccc u ni sl lai F mt mnh.Cc b chia v b r nhnh c sdng sc thit kc tn st yucu t 5.0 Mhz ti 1000 Mhz (hay lnhn). Nu b r nhnh cui cng trnhp i dy chnh m vic i dy khng

chm dt ti y, mt thit b cui 75Ohm s c lp t kt thc udy.


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All unused ports on any device shall betermination in 75 ohms.

Tt ccc u ra trn bt k thit bnokhng sdng sc kt thc u livi in trl 75 Ohm.

CATV amplifierProvide launch amplifier to suit cablefeed requirements

Ampli CATVCung cp cc bkhuych i ph hp

vi nhng yu cu ca cp u vo.

2 QUALITY 2 CHT LNG

2.1 PERFORMANCE CRITERIA 2.1 TIU CHUN THC HIN

Input to headend and amplifiers

Channel signal level: 60 dBV.

Ng vo b iu khin trung tm vcc bkhuch iMc tn hiu ca knh: 60dBV

Mutual isolation between systemoutlets36 dB within the band 5 MHz to862 MHz, within or between premises.

S cch ly ln nhau gia h thngcc ra36 dB trong phm vi bng tn 5MHzn 862 MHz, trong hoc gia ta nh.

System outlet range of levels

60 dBV and 90 dBV, at all times.

Cc mc dy tn hiu ca h thng ra60 dBV v 90 dBV, tt cmithi im.

System outlet levels63 dBV for all channels.

Cc mc tn hiu ca hthng cm63 dBcho tt ccc knh

2.2 SUBMISSIONS 2.2 TRNH DUYT

System frequenciesSubmit design frequencies for approval.

Cc tn sca hthngPhi trnh duyt tn sthit k.

Reception quality report

Submit reception quality report, citingmethods used for determination. Addressall signals that the system is to receive.

Bo co cht lng ng thu

Phi trnh bo co cht lng ngthu, vin dn cc phng php sdngxc nh. nh a ch tt c cc tnhiu m hthng thu c.

Shop drawings and calculationsInclude the following:

- Drawings showing the system blockdiagram, proposed location of allcomponents and interconnectingcabling.

- Calculated signal levels at outlets andat the input and output of amplifiers,splitters and taps.

- Make and model number ofcomponents.

- Antenna types and their method ofmounting.

Cc bn vthi cng v bng tnhBao gm cc chi tit sau:- Cc bn v trnh by h thng s

khi, a ra vtr ca tt ccc thnhphn cu kin v sni cp.

- Cc mc tn hiu tnh ton cc rav ng vo, ng ra ca cc bkhuch i, cc bchia v mc r tnhiu.

- s model v nh sn xut ca ccthnh phn cu kin

- Cc loi An-ten v phng php lpt.

Product dataSubmit product data for all components.

Ti liu kthut sn phmPhi trnh ti liu k thut sn phmcho tt ccc thnh phn cu kin.

Licensing & reception feesSubmit all licensing application andreception fees for approval, with licencefees to be reimbursed.

Cc ph thu tn hiu v giy phpPhi trnh duyt tt cn xin giy phplp t thu tn hiu, vi chi ph giyphp sc hon tr.

2.3 SAMPLES 2.3 MU VT T

Components Cc thnh phn cu kin


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Submit samples for cabling outlets,splitters, tap installations etc.

Phi trnh cc mu vt tvcp, ra,cc bchia tn hiu,

All exposed equipment/ accessories ...are to match the samples used in theexisting showroom (sample house)unless otherwise approved.

Tt ccc thit b, phkin... lra theonhcc mu sdng trong phng trngby (nh mu) tr khi c ph duytkhc i.

3 MATERIALS ANDCOMPONENTS

3 CC THNH PHN CU KINV VT T

3.1 COMBINER

Provide a combiner as show on thedrawing to combine signal from IRDs,feed to the Amplifier

3.1 BTRN KNH

Cung cp mt btrn knh nhc thhin trn bn vtrn cc knh tccbtch hp nhn gii m, xut tn hiu rabkhuych i

3.2 AMPLIFIERS 3.2 CC BKHUCH I

Amplifiers shall comply with the

following- Gain 40 dB or higher- Adjustable slope- Automatic or manual gain control- Maximum output of 120dB microvolt

or better

-Noise figure < 5dB- Return loss ration 25 dB at the input

and output or better

- Input and output impedance 75 ohms- Equal to Blankom or approved

equivalent.

Cc bkhuch i phi ph hp theo:

- li 40 dBa hoc cao hn- dc iu chnh c- Tng hoc bng tay iu chnh

li-Ng ra cao nht 120 dBV hoc tt

hn- n < 5 dB- Tn tht ng hi 25 dB ng vo

v ra hoc tt hn- Trkhng ng vo v ra 75 ohms- Dng loi Blankom hoc loi tng

ng c ph duyt.

3.3 POWER SPLITTER 3.3 BCHIA NGUN TN HIU

Specifications (typical values)Input frequency range: 950... 2150MHz

Input/output impedance: 75 (F-conn.)Distribution loss: 12 dB

Input return loss 12dBOutputs protection loss: 22dB

Screening: 65dBPower supply 230~V (+6/-10%), 50/60Hz, flexible cable&plug or/and DC

adapterPower consumption max: 14 W

Class of protection: II (DIN-VDE 0860)

Type of protection: IP 30

Permanent input voltage: 13V, 15V or17V Max

power consumption: 300mA

Temperature range: -10C...+50

Relative air humidity: Max 60%

Equal to Blankom/ Zinwell or approvedequivalent.

c im k thut (cc gi tr inhnh)Dy tn svo: 950 2150MHzTng trng vo/ra: 75(F-conn)Tn tht ng phn phi: 12 dBTn tht ng hi ng vo; 12 dBTn tht bo vcc ng ra: 22 dBBc chng nhiu: 65 dBNgun cung cp: 230 ~ V (+6/-10%)

50/60 Hz c cp mm v phch cm v/hoc bnn ngun DCCng sut tiu thmax: 14 WCp bo v: II (DIN-VDE 0860)Loi bo v: IP 30in p ng vo thung trc: 13V, 15Vhoc 17V max.Cng sut tiu th: 300 mADy nhit : -10C . +50Cm khng kh tng i: Max 60%Dng loi BlanKom/ Zinwell hoc dngloi tng ng c trnh duyt.


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3.4 SPLITTERS 3.4 CC BCHIA

Splitters shall be x-way as shown on thedrawings, with insertion loss of less than3.5 dB (greater for 4,6,8-way). Input andoutput impedance of 75 ohms.

Cc bchia c nhiu ng c thhintrn bn vvi tn tht chia nhhn 3.5dB (ln hn i vi 4,6,8 ng). Tng trng vo v ra l 75.

3.5 COAXIAL CABLE 3.5 CPNG TRC

TypesGeneral: Minimum quad shield, 75 degC, stranded conductors, PE dielectric,PVC jacket

Cc loiTng qut: Ti thiu dng loi cp clp v bc gc 4, 75C, loi nhiu tao,c cht cch in PE, vbc PVC

Cable SizeProvide high frequency band cable asshown on drawing

- RG11 and 0.500 sizes are to be usedfor trunk runs, which exceed 200 feet(60m).

- RG6 is to be used for trunk runs,which are shorter that 200 feet (60m)

- 0.500 Inches cable to be used incascaded systems.

Kch ccpSdng cp dy tn scao nhthhintrn bn v- Cp RG11 v cc kch thc 0.500

c dng chy trong mng cp mchiu di vt qu 200 feet (60m).

- RG6 c dng chy trong mng cp,m chiu di phi ngn hn 200 feet(60m)

- Cp 0.500 inches c dng trong cchthng xp tng.

Model

KiuS-10C-HFB

5C-HFB

7C-HFB

Conductor resistance (20C) ( /km)

in trdy dn (20C) ( /km)5.65max.

21.1max.

10.4max.

Withstand voltage (ACV/min)

in p chu ng (ACV/min)1000 1000 1000

Insulation resistance (M -km)

in trcch in (M -km)1000min.

1000min.

1000min.

Capacitance (1kHz) (nF/km)

in dung (1kHz) (nF/km)553 553 553

Characteristic impedance ( )

Trkhng c trng ( )753 753 753

90MHz 34 60 43

220MHz 57 96 70

470MHz 91 145 106

770MHz 124 190 142

1000MHz 148 - -

1300MHz 177 - -

1550MHz 200 - -

Electricalproperties

Thng s inc trng

Std. attenuation

Bin Std.(20C) (dB/km)

1770MHz 220 - -


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RG-59/U cableCp ng trc RG-59/U

Center Cond.

Dy ni chnhNom. D.C.R.

D.C.R. danhnh

DielectricJacket

V bccch in

Shields

Vbc mng

Nom. Imp.

Tr khngdanh nh

Nom. Cap.in dungdanh nhNom. V.O.P.

V.O.P. danhnhWeight

Khi lng

Attenuation

Bin

MHz db/100'

20 AWGSolid BC

10.1 ohms/MFT

FFEP

PVC Low

SmokePolymer

1st95% BC Braid

3.7 ohms/MFT

75 ohms16.5 pF/FT82%38 Lbs/MFT

50 1.8

100 2.6

200 3.8

400 5.6900 8.8

1000 9.4

Coaxial connectorsSolderless 75 Ohm Impedance CoaxialCable Connectors specifically designedfor the cable size shall be provided,

All connections shall be made using acrimp tool designed consistent with

connector construction and intended use.

F connectors are required. Screw on orseparate crimp ring type connectors shallnot be used in the system.

Crimp type: Series 6 and 11. Do not useTwist-on or type employing a separateCrimp ring to secure the outer braid ofthe cable.

Cc u ni ng trcCc u ni khng hn c trkhng l75c thit k ring cho tt ccckch ccp sc sdng.Tt c cc u ni s c dng bidng cun m dng cny c thit

kph hp vi cc cu trc v c mcch sdng u ni.Cc u ni F c yu cu. u nisit vis hoc cc loi u ni c vngun tch bit skhng c dng tronghthng ny.Loi dng cun: loi 6 v 11. Khngdng loi Vn xon hoc loi sdngVng un tch bit sit cht cholp bn ca cp.

OutletsAllow for fittings within the ranges ofthese manufacturers and submit

alternatives for selection and approval.Plate type: Flush mount

Impedance: 75 ohm

Blocking capacitors at each outlet.

Insertion loss: less than 1.5 dB

Cc cmS dng cc ph kin trong phm vica cc nh sn xut ny v trnh cc

phng n chn la v ph duyt.Loi bng: Gn phng mtTrkhng: 75 C tblocking mi cmTn tht u vo: < 1.5 dB

General Cable RequirementsSweep testing of each reel of coaxialcable for transmission and structuralreturn loss shall be performed over the5Mhz to 1000 MHz range by the cablemanufacturer.

Hard copy of the test results will beprovided with the cable.

Cc yu cu chung vcpKim tra nhanh mi cun cp ng trcv truyn dn v cu trc, tn thtng vsc thc hin dy tn 5Mhz 1000 Mhz bi nh sn xut.Sao chp li cc kt qu th nghim,cung cp km theo vi cp.


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Cabling RequirementsThe minimum acceptable frequencyresponse of any component on thesystem shall be:

- 5 to 1500 MHz (Passive)-

5 MHz to 1000 (Active)- Amplitude response over this range

shall be 4 dBV with respect to linerepresenting normal cable tilt.

- Cable shall be 75ohm Impedance from5 to 1000

- Cable centre construction shall besolid copper (or copper clad steel)

- Cable Dielectric Insulation shallconsist of Cellular Polyethylene.

- Cable to be provided with 2 Shields- First Shield consists of.002 inch

double aluminium coated Nylar orpolypropylene tape with 1/8 inchoverlap bound to dielectric.

- Second Shield consists of minimum60% coverage of braid 34 AWGaluminium or tinned copper wire.

- Cable Jacket to be made of noncontaminating low temperaturepolyvinyl chloride or Teflon.

- PVC jacketed cable for insideconduit/outside conduit. However,inside Hotel should be plenum typecable.

- Outside Cable will be shielded with a67% or greater cable shield.

Cc yu cu vcpTn s ti thiu c th chp nhn p ng vi bt kcu kin thnh phnno trong hthng l:- 5 MHz 1500 MHz (bng)-

5 MHz 1000 MHz (chng)- p ng bin trn dy tn ny

phi l 4 dbmv i vi nghingbnh thung ca cp c trnh by

- Cp phi l loi ng trc c trkhng 75 nm trong dy tn 5MHz 1000 MHz

- Li cp phi l loi ng cng (hocng c lp thp bao ph)

- Cht cch in mi ca cp gm cCellular Polyethylenne

- Cp phi c cung cp bi hai lpvbc

- Lp vthnht gm c.002 inch hailp v nhm c ph Nylar hocpolypropylene bng 1/8 inch gichng ln ranh gii in mi

- Lp v th hai gm c t nht 60%mc bao ph ca lp bn 34AWG dy nhm hoc dy ng .

- V bc cp phi c lm tPolyvinyl chloride hoc Teflonkhng gy nhim nhit thp.

- Cp PVC c bc trong ng hocngoi ng. Tuy nhin, khi dng bntrong khch sn phi l loi cpplenum.

- Cp dng bn ngoi sc bc vi67% hoc ln hn loi cp c vbc.

3.6 CONDUIT 3.6 NGIN

SizeGeneral: No conduit should have anoutside diameter of less than 20 mm.

Kch cTng qut: Khng s dng ng cng knh ngoi < 20mm

Rigid conduitsProvide straight long runs, smooth andfree from rags, burrs and sharp edges.Do not use conduit elbows.

ng cngCung cp ng in chy di thng, uv khng blng, c ghay sc cnh.Khng dng ng c cc gp khc.

GalvanizingProvide galvanized conduit support clipsfor damp locations.

Trng kmCung cp ng trng km, kp, gi nhng vtr m thp.

Set outIf exposed to view, install conduits inparallel runs with right angle changes ofdirection.

Trng byNu l ra ch nhn thy c, lp tng in chy song song v phi thtvung gc khi i hng.

Draw cordsGeneral: Provide draw cords in conduitsnot in use. Leave 1 m of cord coiled ateach end of the run.

Material: Polypropylene cord, orinsulated stranded earth wire, 2.5 mm2minimum size.

Dy ko miTng qut: Cung cp dy ko mi trongng in dtr. d1 mt dy cuntrn li u cui ca ng in.Vt t: Dy Polypropylene hoc dytip t nhiu tao c bc cch in titdin ti thiu l 2.5 mm2.


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Draw-in boxesGeneral: Provide draw-in boxes atintervals not exceeding 30 m in straightruns, and at changes of level or direction.

Underground draw-in boxes: Providegasketted covers and seal againstmoisture.

Cc hp ko dyTng qut: Cung cp hp ko dy khong cch khng qu 30m cho nhngng in chy thng v nhng chthay i cao hoc nh hng.Hp ko dy chn ngm: s dng loinp c m kn v lm kn hp chng hi nc.

Concealed routesConduits concealed in wall chases,embedded in floor slabs or installed ininaccessible locations: Run directlybetween points of termination,minimising the number of sets. Do notprovide inspection fittings.

Cabling installed within roofs or undertimber flooring: Secure with cable clipsto support beams to prevent cables beingstepped upon or coming loose.

ng in t mng c m trong rnh tng, cvo trong tm sn hoc c lp t nhng v tr khng th n gn c:Chy trc tip gia cc im ni, gimthiu sng in v im ni. Khnglp t cc ph kin phc vcng tckim tra.Cp c lp t bn trong mi hocdi sn g: Lp t cp chc chn vikp, gi trnh cp bbc ln hayri xung.

Conduits in concrete slabsRoute: Do not run in concrete toppings.Do not run within pretensioning cablezones; cross pretensioning cable zones atright angles. Route to avoid crossoversand minimise the number of conduits inany location. Space parallel conduits atleast 50 mm apart.

Minimum cover: Conduit diameter or20 mm.

Conduit size: 25 mm maximumdiameter. Prevent ingress of slurry.

Fixing: Fix directly to top of the bottomlayer of reinforcing where the conduitspass above a single layer of reinforcing.

ng in trong sn b-tngTuyn ng in: Khng c chy ngin trn lp mt b-tng. Khng chytrong nhng vng cng cp kt cu, ctngang vung gc nhng vng cng cpkt cu. Chy cc tuyn dy cp trnhcho nhau v gim ti thiu s lngng in bt k v tr no. ng tsong song cch nhau ti thiu l 50 mmmi bn.Chiu su chn ti thiu: bng ngknh ng in hoc 20 mm.Kch thc ng in: ng knh tia l 25 mm. Trnh hxi-mng ri voS lp cht: Gn trc tip trn bmtca y lp gia cni m cc ng ini qua pha trn ca lp gia c

Prohibited locationsDo not install cable directly into anysolid structure. Do not run conduits inthe floor slabs of boiler rooms, plantrooms and tank rooms.

Nhng tn sn cm t ng inKhng chy cp trc tip trong kt cu.Khng chy ng in trong mt sn caphng ni hi, phng my v bcha.

Hollow-block floorsLocate conduits in the core-filled

sections of precast hollow-block typefloors.

Nhng sn gch khi rngt ng in cc on lc kn b-

tng/ va ca sn bng gch c lctrc.

4 EXECUTION 4 THI CNG

4.1 EXTERNAL SYSTEMCOMPONENTS

4.1 H THNG CU KIN BNNGOI

GeneralDegree of weather protection: ToAS 1939/IPX4 or FCC, IEEE.

Tng qutCp bo vchu c thi tit: Theotiu chun AS 1939/IPX4 hoc FCC,IEEE

Antenna

Installation: To AS 1417.1 or FCC,IEEE.

An-ten

Lp t: Theo tiu chun AS 1417.1hoc FCC, IEEE


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4.2 COAXIAL CABLE 4.2 CPNG TRC

GeneralInstall in conduit or ducting withadequate clearance for the number of

cables. Comply with minimum bendingradius requirements for the size of cable.

Provide the following systems, asappropriate:

- Cast concrete slabs: Cable in PVCconduit.

- Plant rooms: Cable in heavy duty PVCconduit.

- Plastered or rendered surfaces: Cablein PVC conduit.

Coaxial cable identity labels: Labelusing an approved & permanent method.

Tng qutLp t trong ng in hoc ng dnvi htng xng vi slng cp.

Ph hp vi cc yu cu v bn knhgp khc ti thiu cho kch ccp.Cung cp cc h thng thch hp theosau:

- t trong sn b-tng c: Cp itrong ng PVC.

- t trong phng my: Cp i trongng PVC chu ti nng.

- B mt t va: Cp i trong ngPVC.

Lm nhn xc nh cp ng trc:Nhn dng phng php c duyt vcnh.

Coaxial connectorsType: Suitable for the type of shieldstructure specified.

Sealant:

Cc u ni ng trcLoi: Ph hp vi c tnh cu trc caloi vbc qui nh.Cht lm kn:

OutletsFully screen all outlets.

Type: Submit alternatives from IEC60169-2 for review and acceptance.

Cc cmTt ccc cm c bc chng nhiu.Loi: trnh cc schn la theo tiuchun IEC 60169-2 xem xt v chpnhn.

Rigid conduitsProvide straight long runs, smooth andfree from rags, burrs and sharp edges.Do not use conduit elbows.

ng cngCung cp ng in chy di thng, uv khng bthng, c ghay sc cnh.Khng dng ng c cc gp khc, co.

GalvanizingProvide galvanized conduit support clipsfor damp locations.

Trng kmCung cp ng trng km, kp, gi nhng vtr m thp.

Set outIf exposed to view, install conduits inparallel runs with right angle changes ofdirection.

Trng byNu l ra ch nhn thy c, lp tng in chy song song v phi thtvung gc khi i hng.

Draw cordsGeneral: Provide draw cords in conduitsnot in use. Leave 1 m of cord coiled ateach end of the run.

Material: Polypropylene cord, orinsulated stranded earth wire, 2.5 mm2minimum size.

Dy ko miTng qut: Cung cp dy ko mi trongng in dtr. d1 mt dy cuntrn li u cui ca ng in.Vt t: Dy Polypropylene hoc dytip t nhiu tao c bc cch in titdin ti thiu l 2.5 mm2.

Draw-in boxesGeneral: Provide draw-in boxes atintervals not exceeding 30 m in straightruns, and at changes of level or direction.

Underground draw-in boxes: Providegasketted covers and seal againstmoisture.

Cc hp ko dyTng qut: Cung cp hp ko dy khong cch khng qu 30m cho nhngng in chy thng v nhng chthay i cao hoc nh hng.Hp ko dy chn ngm: s dng loinp c m kn v lm kn hp chng hi nc.

Concealed routes

Conduits concealed in wall chases,embedded in floor slabs or installed ininaccessible locations: Run directly

ng in t m

ng c m trong rnh tng, cvo trong tm sn hoc c lp t nhng v tr khng th n gn c:


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between points of termination,minimising the number of sets. Do notprovide inspection fittings.

Cabling installed within roofs or undertimber flooring: Secure with cable clipsto support beams to prevent cables being

stepped upon or coming loose.

Chy trc tip gia cc im ni, gimthiu sng in v im ni. Khnglp t cc ph kin phc vcng tckim tra.Cp c lp t bn trong mi hocdi sn g: Lp t cp chc chn vikp, gi trnh cp bbc ln hayri xung.

Conduits in concrete slabsRoute: Do not run in concrete toppings.Do not run within pretensioning cablezones; cross pretensioning cable zones atright angles. Route to avoid crossoversand minimise the number of conduits inany location. Space parallel conduits atleast 50 mm apart.

Minimum cover: Conduit diameter or20 mm.

Conduit size: 25 mm maximum

diameter. Prevent ingress of slurry.Fixing: Fix directly to top of the bottomlayer of reinforcing where the conduitspass above a single layer of reinforcing.

ng in trong sn b-tngTuyn ng in: Khng c chy ngin trn lp mt b-tng. Khng chytrong nhng vng cng cp kt cu, ctngang vung gc nhng vng cng cpkt cu. Chy cc tuyn dy cp trnhcho nhau v gim ti thiu s lngng in bt k v tr no. ng tsong song cch nhau ti thiu l 50 mmmi bn.Chiu su chn ti thiu: bng ng

knh ng in hoc 20 mm.Kch thc ng in: ng knh tia l 25 mm. Trnh h xi-mng rivo.

S lp cht: Gn trc tip trn bmtca y lp gia cni m cc ng ini qua pha trn ca lp gia c.

Prohibited locationsDo not install cable directly into anysolid structure.

Nhng tn sn cm t ng inKhng chy cp in trc tip trong ktcu.

5 TESTING ANDCOMMISSIONING

5 TH NGHIM, CHY TH VNGHIM THU

5.1 GENERAL 5.1 TNG QUAN

GeneralSetup: To aid in setup, use locallygenerated test signals (on the samefrequencies) to provide static conditionsfor level measurements. Includetabulated results for all or key systempoints in submitted testing data for testsignals.

System performance: Following

completion of system setup adjustments,utilising key system points to verifysettings in accordance with the design,measure and record over the wholesystem.

Signal gain level: required

Carrier-to-noise measurements: required

Tng qutCi t: tr gip ci t, s dngcc tn hiu th nghim pht ti ch(trn cng cc tn s) cung cp cc iukin tnh o mc tn hiu. Bao gmkt quc lit k trn bng cho tt choc cc im then cht ca h thngtrong cc d liu th nghim trnhcho vic thcc tn hiu.Hiu sut hthng: Tip theo khi hon

tt cc iu chnh ci t h thng,dng cc im then cht thm tracc gi trci t ph hp vi thit k,o v ghi li ton bhthng.

o tssng mang - nhiu v li tnhiu: yu cu c.

Measure and record the followingsignals:

- Input to channel converters andchanneled amplifiers.

- Final grouped output of channelconverters and channelised amplifiers.

- Input and output of amplifiers for allchannels (output is main output not

o v ghi li cc tn hiu sau:- Cc bchuyn i knh ng vo v

cc bkhuch i knh tn hiu.- Cc bchuyn i knh ng ra c

phn thnh nhm cui cng v ccbkhuch i knh tn hiu.

- Cc bkhuch i ng vo v ra chott ccc knh (ng vo l ng vo


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test output).

- Input and output of filters for channelspassed.

- Main nodes of passive separating orcombining networks for channel oflowest level and of highest level.

Measure and record the following signalgain level and carrier to noise ratios:

- Input to channel converters andchanneled amplifiers.

- Final grouped output of channelconverters and amplifiers.

- Final grouped output of modulators.- Input and output of amplifiers for all

channels.

chnh khng phi l ng vo thnghim)

-Ng vo v ra ca cc b lc chott ccc knh hp qui cch.

- Cc giao im chnh thng ringbit hoc cc mng li kt ni choknh c mc thp nht hoc cao nht.

o v ghi li tssng mang - nhiu vli tn hiu theo sau:- Cc bchuyn i knh ng vo v

cc bkhuch i knh tn hiu.- Cc bchuyn i knh ng ra c

phn thnh nhm cui cng v ccbkhuch i knh tn hiu.

- Cc b iu ch ng ra c phntheo nhm cui cng.

- Cc bkhuch i ng vo v ra chott ccc knh.

AmplifiersMeasure and record:

- Input and output amplifier signallevels for all channels (output ismain output not the test output).

- Input and output system gain level andcarrier to noise ratios of all channels.

Commissioning:

- Adjust to -6 dB of maximumavailable gain.

- Operate at -6 dB relative to thepublished maximum output level.

- Derate amplifiers relative to thenumber of channels to be carried withallowance for future expansion.

- Apply derating for second andsubsequent amplifiers, whereamplifiers are to be cascaded.

Cc bkhch io v ghi li- Cc mc khuch i tn hiu ng vo

v ra cho tt ccc knh (ng vol ng vo chnh khng phi l ngvo thnghim)

- Tlsng mang - nhiu v li tnhiu cho tt ccc knh.

Chy thv nghim thu:- iu chnh li c gi trcao nht

-6 dB

- Hot ng -6 dB c lin quan nmc tn hiu ng ra cao nht ccng b.

- Gim cng sut danh nh tnh toncc b khuch i lin quan n slng knh thu c vi hn nhcho php mrng trong tng lai.

- ng dng s gim cng sut danhnh tnh ton cho cc bkhuch ith hai v tip theo sau ni mcc bkhuch i xp theo tng.

Distribution componentsAt splitters and taps, measure and record

the input, outputs and all tap ports atminimum and maximum signalfrequencies.

Cc cu kin thnh phn phn phicc bchia, bmc r, o v ghi li

tn hiu ng vo, cc ng ra v tt ccc cng mc r tn s tn hiu caonht v thp nht.

OutletsAt each outlet:

- Measure and record. All channel signal levels. System gain level of all channels.

- Evaluate subjective picture and soundquality on five-grade impairmentscale.

Cc cmmi cm:- o v ghi li

. Cc mc tn hiu ca tt c ccknh

. Tssng mang - nhiu ca tt ccc knh

- nh gi ch quan cht lng hnhnh v m thanh trn nm cp suy

yu.


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6 COMPLETION 6 HON TT

6.1 AS INSTALLEDDOCUMENTATION

6.1 HSHON CNG

GeneralOn completion of system installation,testing and commissioning provide allinformation to aid in the identification ofcomponents and their location. For cableidentification, use the same wording asused on installed labels. Provideinformation in a suitably tabulated formwith reference to the component andposition in the system clearly indicated.

Tng qutKhi hon tt lp t h thng, thnghim, chy th v nghim thu cungcp tt c cc thng tin tr giptrong vic nhn bit cc cu kin thnhphn v vtr ca chng. Vphn nhnbit cp, sdng cc tnh sdnglp t cc nhn. Cung cp cc thngtin dng bng lit k ph hp c thamchiu n cu kin v v tr c xcnh r trong hthng.

As installed drawingsProvide drawings showing the system as

installed. Show all relevant informationsuch as minimum and maximum signalfrequency (channel) and their levels atthe input and output of amplifiers,splitters, taps, tap ports and outlets.

Cc bn vthi cngCung cp cc bn v trnh by lp t

hthng. Trnh by tt ccc thng tinc lin quan cng nhtn s(knh)tnhiu cao nht v thp nht v cc mcca chng ng ra v ng vo ca ccb khuch i, cc b chia, cc mchr, cc im mch rv cc cm.

7 COMMISSIONINGVERIFICATION

7 KIM TRA V XC NHN KTQU CHY TH V NGHIMTHU

7.1 GENERAL 7.1 TNG QUAN

GeneralFollowing submission of as installedsystem drawings and tabulated testresults, carry out verification of systemperformance with this specification andthe approved design.

Tng qutPhi trnh cc bn vhon cng hthng v bng lit k cc kt qu thnghim, thc hin vic thm tra thcthi ca hthng theo c tnh k thutny v thit k c trnh duyt.

VerificationStandard: The maximum allowedvariation is 1 dB from the valuesrecorded during commissioning. Thisdoes not apply to terrestrial receivedFTA channels where AGC is not used,but it does apply for test signalssubstituted as part of the test procedure.

Methods:

- At active equipment - a repeat ofcommissioning tests.

- For splitters and taps at the start andend of all trunk, branch and spurcables -a repeat of commissioningtests.

- The total of taps so tested will be 25%of all taps. If less, then extra taps

randomly selected are to be included.

- At 25% of all outlets - a repeat of

Sthm traTiu chun: Gi tr thay i cho phpcao nht l 1 dB tcc gi trcghi li trong thi gian chy th vnghim thu. iu ny khng ng dngcho vic thu nhn cc knh tmt tFTA ni m AGC khng c sdng,nhng n c ng dng cho vic th

cc tn hiu thay th nh l mt phnthtc thnghim.Cc phng php:- bcc thit bhot ng - mt s

lp li th nghim chy th vnghim thu.

- Cho cc b chia v cc mch r thi im bt u v kt thc ca ttc cc ng dy, nhnh v ngcp - mt slp li thnghim chythv nghim thu.

- Tng cc mch r s th nghim l25% ca tt c cc mch r. Nu

khng, phi thnghim cc mch rvt tri ngu nhin c chn la.- 25% ca tt c cc cm - mt s


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commissioning tests. lp li th nghim chy th vnghim thu.

C.17 Master Antenna - VN - Centrepoint

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