I TRUYN HNH VIT NAM TRUNG TM KTTH CP VIT NAM
CNG HO X HI CH NGHA VIT NAM c lp - T do - Hnh phc
BO CO TH VICKnh gi: - Ban Gim c Trung Tm K Thut Truyn Hnh Cp Vit
Nam - Phng Tng Hp - Ban Gim c Chi Nhnh 6 Tn ti l: L Quang o Sinh
ngy: 15/01/1987 Tt nghip:Vin i hc M H Ni Khoa: in t - Vin Thng n v
th vic: Chi nhnh 6 Trung tm KTTH Cp Vit Nam Thi gian th vic:
28/02/2012 n 28/03/2012 Sau thi gian th vic 1 thng chi nhnh 6 Trung
tm k thut truyn hnh cp Vit Nam. a ch: L 18A khu th 4A ng 560 Quang
Trung H ng H Ni, c s gip tn tnh ca Ban lnh o trong chi nhnh ti thu
c nhng kin thc v c cu t chc, quy ch lm vic cng nh nhng kin thc c bn
v chuyn mn.
2
I.
C cu t chc ca i truyn hnh Vit Nam
i truyn hnh Vit Nam l c quan trc thuc Chnh ph, l c quan ngn lun
ca ng v Nh nc Cng Ho X Hi Ch Ngha Vit Nam.1.
C cu t chc ca i THVN:
BAN GIM C
Khi Qun l
Khi K thut
Khi Bin tp
Khi Ph tr
Khi o to
1.1.Ban gim c: ng u l Tng gim c, gip vic cho Tng gim c l cc Ph
tng gim c v chu trch nhim trc Tng gim c, mi Ph tng gim c ph trch mt
mng nhim v ring. 1.2.Khi bin tp: Gm cc ban nh: Ban thi s, Ban khoa
gio, Ban th thao gii tr v Thng tin kinh t, Ban truyn hnh i ngoi,
Ban bin tp Truyn hnh cp 1.3.Khi k thut: Gm cc trung tm: Trung tm k
thut truyn dn pht sng, Trung tm tin hc v o lng, Trung tm truyn hnh
cp, Trung tm nghin cu ng dng khoa khc k thut truyn hnh, Trung tm k
thut sn xut chng trnh.
1.4.Khi qun l:3
Gm : Ban t chc cn b, Ban k hoch ti chnh, Ban th k bin tp, Ban hp
tc quc t, Ban kim tra, Vn phng. 1.5.Khi o to: Gm c: Trung tm o to
bi dng nghip v Truyn hnh, Trng Cao ng Truyn hnh. 1.6.Khi ph tr: Gm
c: Trung tm t liu, Trung tm m thut, Ban qun l cc d n, Tp tr truyn
hnh, Trung tm qung co v dch v truyn hnh, Trung tm sn xut phim truyn
hnh, Trung tm khai thc phim truyn hnh.
2. C cu t chc ca Trung Tm Truyn Hnh Cp VN:4
5
Trung tm k thut truyn hnh cp Vit Nam l c quan trc thuc i truyn
hnh Vit Nam, c nhim v trin khai xy dng dch v truyn hnh tr tin ca i
THVN nh: truyn hnh cp hu tuyn CATV, truyn hnh s v tinh, cc dch v
gia tngtrn phm vi ton quc; Mua, bn bn quyn cho tt c cc chng trnh v
cc knh truyn hnh tr tin; Qung co v trao i bn quyn truyn hnh tr tin;
Hp tc, lin doanh, lin kt vi cc i tc trong nc, nc ngoi trong lnh vc
truyn hnh tr tin. Trung tm k thut truyn hnh cp Vit Nam v Ban bin tp
truyn hnh cp Vit Nam c quan h hp tc mt thit vi nhau. Lnh o Trung tm
l Ban Gim c trung tm. Trung tm bao gm cc phng v cc chi nhnh vi chc
nng v nhim v ring: + Phng tng hp: Lm nhim v hnh chnh, t chc nhn s,
k hoch, vt t, d n. + Phng k ton: Qun l ti chnh v thu chi. + Phng k
thut: Tip nhn cng ngh, thit k, lp d ton. + Phng kinh doanh: Xy dng
cc chin lc kinh doanh. + Phng qung co: Khai thc, qung co trn ton h
thng truyn hnh do trung tm qun l. + Phng truyn dn pht sng: Qun l,
khai thc h thng pht sng. + Phng qun l khch hng: Qun l, thanh ton
thu bao, tip nhn, chm sc khch hng( Call center). + Phng Truyn thng:
Qung b, pht trin thng hiu VCTV. + Cc chi nhnh VCTV ti H Ni S 2 L B1
Ng 118 Nguyn Khnh Ton Cu Giy 44 - Gip Nht - Thanh Xun Thi cng, lp t
thu bao, qun l mng TH cp. Thi cng, lp t thu bao, qun l mng TH
cp.
CN 1 CN 2
6
CN 3 CN 4
34 - L E - Khu th i Kim - Hong Mai S 10 Ng 69 Xun La Ty H
Thi cng, lp t thu bao, qun l mng TH cp. Thi cng, lp t thu bao,
qun l mng TH cp Thi cng cc cng trnh mng truyn hnh cp. Thi cng, lp t
thu bao, qun l mng TH cp. Thi cng, lp t thu bao,
CN 5
44 - Gip Nht - Thanh Xun L 18A - Khu th 4A - Quang TrungH ng 32
- Ng Quyn - Sn Ty
CN 6
CN 7
qun l mng TH cp.
Ngoi ra cn cc chi nhnh cc tnh thnh ph nh: CN TP.H Ch Minh, CN Ph
Th-TP.Vit Tr, CN Tin Giang-TP.M Tho. V cn c cc tnh nh: Lo Cai, Thi
Nguyn, Vnh Phc, Hi Dng, Hi Phng, Qung Ninh, Ninh Bnh, Thi Bnh,
Thanh Ha, Bnh Thun, Ninh Thun, An Giang. II. Cc quy ch lm vic ti
Trung tm: 1.Quy nh i vi nhn vin k thut: 1.1 i lm ng gi: Ca: - Sng:
T 7h00 n 15h00 - Chiu: T 15h00 n 22h00 Hnh chnh: Bui sng: T 7h30 n
11h30 - Bui chiu: T 13h30 n 17h30 1.2 Khi i lm phi eo th, s dng
qun, o v trang thit b bo h lao ng do n v cp. 1.3 Chun b dng c, vt
t, thit b thc hin hon thnh cng vic c giao . 1.4 Phi hon thnh nhng
cng vic sau vo u gi bui sng hng ngy:7
-
Np tin lp t thu bao Tr hp ng khng thc hin c cho b phn hn lch lp
t ( ghi r l do ). Trng hp xa mng, k thut vin phi ghi y thng tin vo
phiu thng tin xa mng.
-
Np phiu bo hnh ca nhng thu bao thc hin xong. Np phiu nghim thu
vt t, thit b thi cng mng.
1.5 Quyt ton vt t ng theo thc t cng vic thc hin. 1.6 Thc hin ng
quy trnh, yu cu k thut khi lp t thu bao, bo hnh m bo cht lng theo
quy nh. 1.7 Khi n lp t, bo hnh thu bao, nu khng c ngi nh th phi vit
giy bo gi li cho khch hng. 1.8 Dn m u dy vo u cp thu bao hp tn hiu
v dn bng dnh trng bc ngoi. 1.9 Giao dch vi khch hng lch s, ng mc v
tn trng. 1.10 Khi lp t thu bao phi hng dn khch hng s dng truyn hnh
cp. 1.11 Gii thch cho khch hng hiu r v dch v truyn hnh cp khi khch
hng yu cu. 1.12 Ngoi thi gian nhn lch lm vic v hon thnh cng vic vo
u gi sng, KTV khng c ngi phng giao dch khch hng ( tr nhm bo hnh ).
1.13 Khng c dng c, vt t, thit b phng giao dch khch hng. 1.14 Qun l
dng c vt t, thit b c n v cp pht, nu lm mt, h hng ( khng c l do chnh
ng ) th phi bi hon theo quy nh. 1.15 Thc hin ng ni quy, quy nh ca n
v. III. Cc kin thc chuyn mn : 1.Khi nim: Truyn hnh Cp( H thng hu
tuyn) l h thng truyn dn tn hiu t trung tm n thu bao thng qua h thng
cp. - CATV la dich vu phn phi knh truyn hinh cua cac nha khai thac
ti cac thu bao qua h thng cap quang hay cap ng truc. Cac nha cung
cp dich vu CATV Vit Nam ang dung cng ngh tng t cung cp cac chng
trinh truyn hinh tra tin chu yu la qua ng cap ng truc.8
S khi tng quat cua h thng truyn hinh cap * u im : bng thng ln
,cht lng tin hiu rt tt, cht lng con tuy thuc vao tng loai cap truyn
tin hiu( trn ng truyn bi suy hao ). Ngoai ra co th tn dung ng truyn
cho cac muc ich truyn d liu, internet .Hin nay truyn hinh cap co 2
loai : truyn tin hiu bng dy dn - Truyn hinh cap hu tuyn va loai
truyn v tuyn. * Nhc im: Phu thuc rt ln vao mang truyn dn, nu mang
truyn dn khng tt thi cht lng cac chng trinh cung bi xu i. 2. Nguyn
l hot ng mng cp : Mng cp ng trc c thit k bao gm mng cp s dng cp
QR540 v cp RG11. Nguyn tc ca vic thit k mng cp l s dng ng cp QR540
lm ng trc, ng cp RG11 lm ng cp tip cn thu bao. Cp RG6 c s dng lm cp
thu bao. Mng cp ng trc s dng cp QR-540, to mt ng trc chnh cung cp
tn hiu cho cc b khuch i t Node quang. Mng c thit k vi mc ch truyn
dn tn hiu i xa v dn ngun cung cp cho cc khuch i t cc bin p ngun.
Phn chia ng trc ti cc khu ph bng cc thit b chia outdoor cho php
ngun in i qua. Mng cp ng trc s dng cp RG11 s l cc ng cp phn nhnh ti
khch hng. Cp RG11 s dn tn hiu t cc b khuch i phn b ca ng cp QR540
ti cc b chia tn hiu, t cc b chia ny s cung cp tn hiu cho khch
hng.
9
Node quang
S nguyn l mng cp ng trc 3 . Mt s s nguyn l kt ni thit b trong
truyn dn mng Cp: * Thit bi gm: Khuch i, Chia (Outdoor, Indoor), Tap
off (Outdoor, indoor), Cp ng trc (QR540, RG11), Ngun cung cp, chn
ngun a . Lp t CATV trong nha: Ta s dung cac thit bi lp t trong nha
(Ch yn l thit b Indoor)
Hinh 4: S nguyn ly kt ni thit bi truyn dn trong nha.10
b . Lp t CATV ngoai tri: Ta s dung cac thit bi lp t ngoi tri (Ch
yu l thit b outdoor)
S nguyn ly kt ni thit bi truyn dn ngoai tri. IV. Cc cng vic c
giao ti chi nhnh 6: Bt u ngy 28 thng 02 nm 2012 ti c phn cng th vic
ti chi nhnh s 6. Cng vic ch yu hng ngy l bo hnh, lp t, thi cng. 1.
Lp t: - Hai ngi i thnh mt nhm cho cng vic c thun li v an ton. -
Trong qu trnh i dy phi i dy cng va phi trnh dy trng qu, cng qu hoc
dy b xon, gp c th l t hoc gy cp nh hng xu ti cht lng tn hiu ti thu
bao. - Nu cht lng tn hiu km th kim tra li jack ni, dng ng h o mc tn
hiu xem t yu cu cha thng thng khong 60 dBuV l c - Chnh tivi h ting
BG ( 5,5 MHZ ) v h hnh PAL sau d knh - Qun l m u dy cn thn, trnh
tht lc v nhm ln - Sau d knh xong hng dn cho khch hng bit
2. Bo hnh11
- Hai ngi i thnh mt nhm cho cng vic c thun li v an ton.Cng vic
bo hnh i hi phi c kin thc hiu bit v mng truyn hnh cp, khoanh vng c
li. Sau y l nhng li thng gp trong qu trnh vn hnh v cch khc phc: *
Tn hiu ti thu bao nhiu Do mc tn hiu ti thu bao thp. Cn o kim tra mc
tn hiu ti u vo ca tivi . Nguyn nhn v cch khc phc; - Cp thu bao qu
xa. Thit k v thi cng b xung mng cp vo st nh thu bao hn na. - Hp knh
ca tivi b hng, cc knh thu c khng ng u - u ni vo thu bao ti hp thit
b qua nhiu tng chia. Kim tra v thay th cc b chia thnh mt b chia
nhiu ng cho ph hp. - Knh ang s dng b xuyn nhiu t cc h thng v tuyn
bn ngoa ( S mt t, in thoi di ng, ..). Tng cng kh nng bc kim chng
can nhiu, nht l ti im u gia tivi v cp. Kim tra mng xem c v tr no b
h v bc kim loi hoc thit b lp t cha kn. * Cht lng tn hiu ti thu bao
xu i t ngt: Khch hng ang xem bnh thng t nhin thy tn hiu mt vi knh b
xu. Nguyn nhn: ng truyn tn hiu t mng n nh khch hng b thay i t ngt.
Bin dng v cp, b ng inh vo cp, v cp b rch.Cn kim tra li tuyn cp n nh
thu bao hoc tuyn cp trc n hp cp tn hiu cho thu bao, hoc thit b chia
cho thu bao c th hng mt ng * Tn hiu b nhp nhy Khi xem tn hiu ti
tivi thy lc c hnh lc khng. Nguyn nhn v bin php khc phc: in p ngun
cp cho khuch i khng . Do hai l do: in p ngun cp vo h thng khng 220
V ~ hoc trn mng c im cp b Oxy ho gy ra in tr cao.o kim tra in p
ngun, nu khng th lp n p. Kim tra tuyn cp nghi l in tr thay i, tho u
Jack kim tra. Nu cp b Oxy ho qu nhiu th phi thay cp. Lp b xung ngun
in * Cc knh c mc tn hiu khng ng u:12
Khi o bng ng h o hin th di ph thy cc knh c mc tn hiu khng ng u.
Nguyn nhn: li khi lm Jack , cp b bin dng. Kim tra li Jack, lm li
Jack m bo kt ni, thay th on cp b bin dng. * Hnh b cc vch xc ngang:
Hnh nh trn mn hnh tivi c cc vch xc ngang mu trng. Nguyn nhn: Mc tn
hiu vt mc ngng, dn n hin tng nh tn hiu b ct, nhng mc xung tn hiu t
mc nh s hin th l xung trng trn mn hnh. o kim tra mc tn hiu vo, ra
ca khuch i, iu chnh li mc tn hiu m bo cht lng tn hiu u vo, ra nh
thit k i vi khuch i. * Tn hiu c vch ngang lin tc trn mn hnh Trn mn
hnh tivi c nhiu vch ngang mu trng nh dng k i ht mn hnh. Nguyn nhn:
Trng tn s vi mt knh truyn hnh khch ca h thng truyn hnh qung b. Kim
tra vic bc kim chng nhiu trn h thng, c bit ti Jack tivi. * Mt tn
hiu: Khng thu c tn hiu trn tivi. Nguyn nhn: Cp tn hiu b t, thit b
hng hoc mt ngun in cp cho mng. Ti vi khch hng hng Kim tra phm vi mt
tn hiu, nh gi trn s mng cp phn on kh nng mt tn hiu do nguyn nhn no.
Gi in n nh cung cp in, nu bo mt in th i o ngun, hoc chy my pht in
cho n khi c in li. Nu khng b mt in th ra ti hin trng kim tra o c
thc t trn mng xc nh v tr t cp, hng thit b. Ln phng n v tin hnh sa
cha, thay th. - Nu tivi hng cn chng minh cho khch hng bit bng cch
ly 1 ti vi khc vn dng tt th cho khch hng * Tn hiu mu b vn: Hnh nh c
nhng vch ln sng dc theo mn hnh
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Nguyn nhn: Tn hiu b sai pha mu, c thnh phn hi xen vo sng mang
mu. S dng phn tch ph o kim tra xem c thnh phn tn s l nm trong bng
tn ca knh b nhiu hay khng. Nu c th phi kim tra v thay th khuch i
trn h thng. 3.Thi Cng - i theo nhm ty vo lng cng vic c giao. Thi
cng i hi k thut vin phi bit c bn v ca ngi thit k, nm bt c cc thit b
c giao. V. T nh gi bn thn *u im: -Lun chp hnh tt cc ni quy v quy ch
ca Trung tm KTTH Cp Vit Nam cng nh ca Chi nhnh 6. -Tham gia mi hot
ng vn ho th thao ca Chi nhnh. -Trong cng vic ti lun c gng tm ti, hc
hi v tip thu nhng kin, kinh nghim ca cc anh ch em trong Chi nhnh vi
mt tinh thn cu th, ng thi p dng nhng kin thc c hc tp ti trng v nhng
nm cng tc trc y vo cng vic c hiu qu nht. * Nhc im: -Do l nhn vin mi
nn ngp nhiu b ng,i khi cn lng tng trong cng vic nhng ti vn c gng
hon thnh tt cng vic c giao. -Trong khong thi gian khng di v vi nhng
kin thc m mnh tip thu c, ti ngh rng mnh hon ton c th p ng c nhng
cng vic ti Chi nhnh. -c tip nhn vo Trung tm, ti s chp hnh mi s phn
cng ca lnh o Trung tm, cng nh cc quy nh, quy ch ca Trung tm v lun
hon thnh tt cc nhim v c giao.
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15
Ti xin chn thnh cm n Ban lnh o Trung tm k thut Truyn hnh Cp Vit
Nam v Chi nhnh 6 nhit tnh gip , to iu kin cho ti hon thnh tt nhim v
trong thi gian th vic.
H Ni, ngy 04 thng 04 nm 2012 NGI VIT BO CO
L Quang o
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nhn xt ca ban gim c chi nhnh: CH K GIM C
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