IRIG-B Analyzer
“
Tlhahisoleseding ya Sehlahiswa
Litlhaloso
Sehlahisoa ke sesebelisoa sa sync sa IRIG-B se sebelisoang hangata ho
Matla, Liindasteri tsa Boiketsetso, le Liindasteri tsa Taolo.
- Mofuta oa Letšoao: IRIG-B
- Sekhahla sa Bit: 100 Hz
- Nako ea Bit: 10 ms
- Bits ka Frame: 100
- Nako ea Frame: 1000 ms
- Sekhahla sa Frame: 1 Hz
Litaelo tsa Tšebeliso ea Sehlahisoa
1. Mefuta ea Modulation
Sesebelisoa sa sync sa IRIG-B se fana ka modulation e meraro e fapaneng
mefuta:
- DCLS: Sebaka se phahameng sa Phetiso:
100m, Ho nepahala: <100 ns - HO THE: Sebaka se phahameng sa Phetiso:
300m - Manchester e fetotsoeng: Phetiso e phahameng
Sebaka: <300m, Ho nepahala: <100 ns
2. Maqhubu a Maqhubu le Mantsoe a Khoutung
Khoutu ea sebopeho sa IRIG-B e na le mofuta oa modulation, carrier
frequency, le mantsoe a khouto.
Likhetho tsa Maqhubu a Bapalami:
- x ke mofuta oa modulation
- y ke maqhubu a mopalami
- z ke lipolelo kapa tlhahisoleseding e ngotsoeng ka har'a IRIG
molaetsa
FAQ (Lipotso Tse Botsoang Hangata)
P: Sepheo sa ho lumellana ha nako ea IRIG-B ke sefe?
A: IRIG-B sync ea nako e sebelisoa bakeng sa khokahano ea nako e nepahetseng ho
Matla, Liindasteri tsa Boiketsetso, le Liindasteri tsa Taolo ho netefatsa
khokahanyo e nepahetseng ea ts'ebetso.
P: Ke theha sesebelisoa sa sync sa IRIG-B joang?
A: Ho theha sesebelisoa, sheba buka ea mosebelisi bakeng sa lintlha tse tobileng
litaelo mabapi le ho hokahanya le ho hlophisa sync ea nako ea IRIG-B
sesebelisoa se ipapisitse le litlhoko tsa kopo ea hau.
P: Na sesebelisoa sa sync sa IRIG-B se ka sebelisoa indastering e thata
tikoloho?
A: E, mochine oa sync oa IRIG-B oa nako o etselitsoe ho mamella
maemo a thata a indasteri le ho sebetsa ka botshepehi tlasa
maemo a phephetsang.
"`
Tataiso ea IRIG-B
(Hoo e ka bang) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Nako Sync
Selelekela
Khoutu ea nako ea Inter-Range Instrument Group (IRIG), ke mefuta e mengata ea mekhoa e tloaelehileng ea nako e sebelisoang ho fetisetsa tlhahisoleseding ea nako (nako, letsatsi, boleng, joalo-joalo) ho tloha ho GPS / Atomic clock ho ea ho lisebelisoa tsa makhoba tse hokahaneng. Ka tekanyetso ea IRIG, e qalileng ho ngoloa ka 1956 le ho amoheloa ka 1960, joale ke pontšo ea nako e hlalositsoeng hantle e amohetsoeng ka bophara le ho ntlafatsoa ho theosa le lilemo. Likopo tsa likhoutu tsa nako tsa IRIG li tloha ho ho hokahanya lits'ebetso tsa boits'oaro ba li-substation ho isa ho likhokahano tsa sesole le lisebelisoa tsa ho lekanya leoatleng. Ka liforomo tse tšeletseng tse hlalositsoeng tseo u ka khethang ho tsona, IRIG e thehile mokhoa o feto-fetohang le o nepahetseng oa nako ho sebetsa liindastering tsohle. Setšoantšo se latelang se bontša mefuta e mengata e feletseng ea liforomo tsa khoutu ea nako ea IRIG.
Setšoantšo sa 1. Liforomo tsa IRIG Tse Nkiloeng ho IRIG Standard 200-04
Khoutu ea nako eo u lokelang ho tsepamisa maikutlo ho eona ke sebopeho sa IRIG-B. IRIG-B ke phetolelo e tloaelehileng ka ho fetisisa e sebelisoang ka har'a Power, Industrial Automation le Control Industries. Sheba setšoantšo se fetileng, IRIG-B ke lets'oao la 1 kHz le nang le likotoana tse 100 tsa data, e 'ngoe le e' ngoe e fetisoa ka nako ea 10 ms, e nka nako e felletseng ea motsotsoana o le mong bakeng sa phetisetso e felletseng.
Tafole e latelang e akaretsa hore na IRIG-B e fetisa data joang.
Lethathamo la 1. IRIG-B Nako ea Khoutu
Khoutu
Bit Rate
IRIG-B
100 Hz
Nako ea Bit 10 ms
Bits ka Frame 100
Nako ea Frame 1000 ms
Sekhahla sa Frame 1 Hz
Ka hare ho IRIG-B, ho na le mefuta e mengata ea likhetho tse fumanehang ho etsa lets'oao le felletseng. Ea pele ke mofuta oa modulation.
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(Hoo e ka bang) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Nako Sync
Tafole ea likateng
Selelekela……………………………………………………………………………………………………………………………………………………………………
1. Mefuta ea Modulation ea IRIG-B 3
2. Carrier Frequency………………………………………………………………………………………………………………………………………
3. Coded Expressions……………………………………………………………………………………………………………………………………..
4. IRIG-B Letshwao – Thepa ya Bohlokwa …………………………………………………………………………………………………………………………….
5. Mesebetsi ea Taolo…………………………………………………………………………………………………………………………………….. AFNOR NFS 10-5.1 Extensions………………………………………………………………………………………………………..87 500. IEEE C10 (e nketsoe sebaka ke IEEE 5.2 le C37.118.1) Katoloso………………………………………………………..1344 37.118. Boleng ba Nako…………………………………………………………………………………………………………………………………….. 10 5.3. Boleng ba Nako e Tsoelang Pele (CTQ)………………………………………………………………………………………………………….11
6. Litlhahiso tsa ho Kena Mofuta oa Cable: Shield Twisted Pair (STP) vs Coaxial………………………………………………………………………………………13 6.1. Terminating Resistor…………………………………………………………………………………………………………………………… 13 6.2. IRIG-B13X Loading Commendations……………………………………………………………………………………………………… 6.3 00. IRIG-B16X Loading Commenders………………………………………………………………………………………………………………………………………………………………… Li-Fiber Installations…………………………………………………………………………………………………………………………………
7. Programmable Pulses……………………………………………………………………………………………………………………………….
8. Kakaretso………………………………………………………………………………………………………………………………………………………. 20
Microchip Information………………………………………………………………………………………………………………………………………… 21 Matshwao a kgwebo……………………………………………………………………………………………………………………………………………………… 21 Molao Tsebiso……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
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(Hoo e ka bang) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Nako Sync Mefuta ea Modulation IRIG-B
1. IRIG-B Mefuta ea Modulation
IRIG-B e na le mefuta e meraro e fapaneng ea modulation:
· Direct Current Level Shift (DCLS)–haholo-holo sena ke lets'oao le fetotsoeng ka bophara ba 0 5 Vdc, moo bophara bo fapaneng ba pulse bo emelang data e nang le khoutu. Ena ke mokhoa o tloaelehileng oa ho feto-fetoha o sebelisoang kajeno ka lebaka la ho nepahala ha oona o phahameng (<100 ns boema-kepeng). Examplets'oao la DCLS le bonts'oa ka mohlala o mosehla setšoantšong se latelang.
· Amplitude Modulated (AM) -e fetotsoe ka lets'oao la 1 kHz sine wave carrier ka karolelano ea 3: 1. Letšoao lena ha le na litaba tsa DC. Sena se ile sa etsa hore AM e tuma nakong e fetileng kaha e ne e lumella hore lets'oao le fetisoe libakeng tse telele. Ka lebaka la ho nepahala ha lets'oao le tlase (<2 li-microseconds boema-kepeng), AM ha e sa le letšoao la khetho. Examplets'oao la AM IRIG-B le ka bonoa moleng o motala setšoantšong se latelang.
· Modified Manchester Modulation–ke mofuta o sa tloaelehang oa ho feto-fetoha oa IRIG-B. U sebelisa leqhubu la lisekoere la 1 kHz le feto-fetoha le maemo ho fapana le ho fetoha ha boemo ba DC, lets'oao lena ha le na leeme la DC. Sena se lumella ho fetisoa ka maeto a malelele, ha ho ntse ho boloka ho nepahala ho phahameng (<100 ns).
Setšoantšo sa 1-1. Papiso Pakeng tsa AM IRIG-B le DCLS IRIG-B
Tafole e latelang e thathamisa ho nepahala le litšobotsi tsa phetiso ea mofuta o mong le o mong oa moduli.
Lethathamo la 1-1. Modulation Properties bakeng sa IRIG-B
Mofuta oa Modulation
Ho Nepaha ha Bohole bo Phahameng ba Phetiso (boema-kepeng ba oache)
0
DCLS
<100m
<100 ns
1
AM
<300m
<2µs
2
Manchester e fetotsoeng
<300m
<100 ns
Nomoro e ka pele ho mefuta ena ea modulation (0, 1 le 2) e etsa khoutu ea sebopeho sa IRIG-B, eo ka kakaretso e hlahisoang e le IRIG-Bxyz kapa Bxyz. Khoutung ena, x ke mofuta oa modulation, y ke frequency carrier le z ke mantsoe a khouto kapa tlhahisoleseling e kenyellelitsoeng ka har'a molaetsa oa IRIG.
Ho etsa polelo e felletseng, joale re tlameha ho sheba likhetho tse fapaneng bakeng sa maqhubu a sepalangoang le polelo e ngotsoeng.
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(Hoo e ka bang) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Nako Sync Carrier Frequency
2. Moemeli Frequency
Bakeng sa IRIG-B, maqhubu a carrier a itšetlehile ka mofuta oa modulation o sebelisoang. Bakeng sa mohlalaample, tabeng ea DCLS modulation, ha ho na mofuta oa wave wave. Ka hona, ha ho na maqhubu a carrier. Tabeng ea AM, ho na le leqhubu la 1 kHz sine le sebelisetsoang ho fetisa lets'oao libakeng tse telele. Tse latelang ke li-carriers tse peli tse tloaelehileng ho IRIG-B: · 1 kHz Carrier–AM le Modified Manchester ka bobeli li sebelisa 1 kHz carrier · No Carrier–DCLS hloka no carrier frequency E latelang ke mefuta e meraro e tloaelehileng ea IRIG-B: · IRIG-B00z–a DCLS IRIG-B signal with no carrier12 · IRIG-B- Amplitude Modulated (AM) pontšo e nang le 1 kHz carrier sine wave · IRIG-B22x–mofuta o fetotsoeng oa Manchester o nang le 1 kHz square wave carrier Karolo ea ho qetela ea khoutu ea IRIG-B e lokelang ho nahanoa ke Coded Expressions.
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(Hoo e ka bang) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Nako Sync Coded Expressions
3. Mantsoe a Khoutu
Ho utloisisa lipolelo tse fapaneng tse nang le likhoutu, re tlameha ho qala ka ho hlalosa li-acronyms tse sebelisitsoeng ho IRIG-B.
Tafole e latelang e thathamisa mantsoe a khutsufalitsoeng le tlhaloso ea eona.
Lethathamo la 3-1. Acronym Definim for IRIG-B Coded Expression
Kgutsufatso
Lebitso
Tlhaloso
BCDTOY BCDYEAR CF
Binary Coded Decimal Nako ea Selemo
Binary Coded Decimal Year
Mosebetsi oa Taolo
BCDTOY e na le lintlha tse latelang-metsotsoana, metsotso, lihora le letsatsi la selemo
BCDYEAR e na le boleng ba selemo (0 99)
Mesebetsi ea taolo ke karolo e se nang letho ea khoutu ea IRIG-B e ka tlatsoang ka likarolo tse hlalositsoeng ke basebelisi. Bakeng sa boitsebiso bo eketsehileng, bona IEEE C37.118.1 (e phahamisitsoeng IEEE 1344 le C37.118) karolo ea Extensions.
SBS
Binary e otlolohileng
SBS e bala ho tloha ho 0 ho isa ho 86,399. Ena ke palo ea metsotsoana e fetileng nakong
Metsotsoana
letsatsi. Sena se ka sebelisoa ho fumana nako ea letsatsi hape, 'me ka linako tse ling e sebelisoa e le cheke.
Ka kutloisiso ea li-acronyms tse fapaneng, joale re ka sheba likhetho tse supileng tsa data tse fumanehang ho etsa khoutu ea nako ea IRIG-B. Lethathamo le latelang le thathamisa likhetho.
Lethathamo la 3-2. IRIG-B Mantsoe a Khoutu
Khoutu
Polelo
0
BCDTOY, CF, SBS
1
BCDTOY, CF
2
BCDTOY
3
BCDTOY, SBS
4
BCDTOY, BCDYEAR, CF, SBS
5
BCDTOY, BCDYEAR, CF
6
BCDTOY, BCDYEAR
7
BCDTOY, BCDYEAR, SBS
Lintlha Metsotsoana, Metsotso, Lihora, Letsatsi la Selemo, Mesebetsi ea Taolo le Metsotsoana e Otlolohileng ea binary Metsotsoana, Metsotso, Lihora, Letsatsi la Selemo le Mesebetsi ea Taolo Metsotsoana, Metsotso, Lihora le Letsatsi la Selemo Metsotsoana, Metsotso, Lihora, Letsatsi la Selemo le metsotsoana e Otlolohileng ea binary E na le; Metsotsoana, Metsotso, Lihora, Letsatsi la Selemo, Selemo, Mesebetsi ea Taolo le metsotsoana e Otlolohileng ea binary E na le; Metsotsoana, Metsotso, Lihora, Letsatsi la Selemo, Selemo le Mesebetsi ea Taolo E na le; Metsotsoana, Metsotso, Lihora, Letsatsi la Selemo le Selemo E na le; Metsotsoana, Metsotso, Lihora, Letsatsi la Selemo, Selemo le metsotsoana e Otlolohileng ea binary
Khetho e tloaelehileng haholo bakeng sa e 'ngoe le e' ngoe ea lipolelo tsena ke khoutu 4, e nang le lintlha tsohle tsa nako le likarolo tsa taolo. E etsa bonnete ba hore ho sa tsotellehe hore na u sebelisa sesebelisoa sefe, e ka fumana boitsebiso boo e bo hlokang ho lumellana le oache e kholo. Bakeng sa lisebelisoa tse sa hlokeng boitsebiso bo eketsehileng, sena se tlameha ho lahloa ke sesebelisoa sa lekhoba.
Sena se tlisa ho feletseng IRIG-B rulaganya;
· IRIG-B004 –a DCLS IRIG-B lets'oao le se nang mojari
· IRIG-B124–an Amplitude Modulated (AM) lets'oao le nang le 1 kHz carrier sine wave
IRIG-B224-mofuta o fetotsoeng oa Manchester Modulation o nang le 1 kHz square wave carrier
Palo e latelang e bontša lintlha tseo re li tšohlileng likarolong tse fetileng. E akaretsa ka botlalo likhetho tsohle tse fumanehang mofuteng oa IRIG.
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Setšoantšo sa 3-1. IRIG Code Reference Guide
(Hoo e ka bang) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Nako Sync Coded Expressions
Tlhokomeliso: E tsoa ho IRIG Standard 200-04
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(Hoo e batlang e le) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Nako Sync IRIG-B Signal – Key Properties
4. IRIG-B Pontšo - Thepa ea Bohlokoa
Letšoao la 'mele la IRIG-B le entsoe ka thepa e' maloa ea bohlokoa. Ha ho bohlokoa ho tseba thepa, empa ho thusa kutloisisong e akaretsang ea hore na lets'oao la nako le sebetsa joang. E boetse e na le thuso haeba u tlameha ho sheba lets'oao la IRIG-B ho oscilloscope (sebelisa IRIG-B analyzer ho bonolo haholo!).
Ntlha ea pele eo re e thahasellang ke letšoao la boitsebiso le fumanoang qalong ea lets'oao. Tabeng ea letšoao la DCLS, letšoao lena la litšupiso ke 8 ms pulse e nang le bohale ba eona bo ntseng bo phahama ho letšoao la bobeli (ha ea bobeli e qala). 8 ms pulse ena e tšoaea ho qaleha ha khoutu ea IRIG-B mme e fana ka tšupiso ea bobeli bakeng sa lisebelisoa tsa lekhoba ho ikamahanya le tsona.
Mokhoa o bonolo oa ho fumana lets'oao la nako ke ho batla li-pulse tse peli tsa 8 ms tse bapileng. Ea pele ke qetello ea foreimi e latelang ea IRIG-B, 'me ea bobeli ke letšoao la nako le qalang IRIG-B foreimi e ncha.
Setšoantšo se latelang se bontša motho oa mehlengampea pulse ena.
Setšoantšo sa 4-1. 8 ms Reference Marker e Bontša Qalo ea IRIG-B Frame
Tlhokomeliso: E tsoa ho IRIG Standard 200-04
Ho tsoa ho lesupa la litšupiso ho tla li-decimal coded tse binary tse arotsoeng ka lihlopha tse leshome tsa 8-bit, se seng le se seng se arotsoe ka li-identifiers tsa boemo ba 8 ms (P1 ho ea ho P0). Lintlha tse ka har'a li-blocks tsena li entsoe ka khoutu ho sebelisoa bophara bo fapaneng ba pulse ho emela binary 0 kapa binary 1. Hlokomela: Setšoantšong se ka pele, binary 0 e emeloa ke 2 ms pulse le binary 1 ka 5 ms pulse.
Ho nka likotoana tsohle lipakeng tsa li-position, u ka fetolela binary ho boleng ba decimal ho fumana nako le letsatsi tse nepahetseng.
Tlhokomeliso: Metsotsoana, metsotso, lihora le tšimo ea selemo li arotsoe ka likarolo tse peli tsa 4-bit. Likotoana tse 'nè tsa pele li emela li-decimals 0 9 le likotoana tse 'ne tse latelang tse emelang 10s ea palo eo, ke hore, metsotsoana e 10 ea metsotsoana 0, 10, 20, 30, 40 le 50. Sheba setšoantšo se latelang bakeng sa lintlha tse feletseng.
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Setšoantšo sa 4-2. Tlatsa IRIG-B Signal e nang le Lintlha tse thathamisitsoeng
(Hoo e batlang e le) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Nako Sync IRIG-B Signal – Key Properties
Tlhokomeliso: E tsoa ho IRIG Standard 200-04
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(Hoo e batlang e le) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Nako Sync IRIG-B Signal – Key Properties
Lethathamo la 4-1. Aroha ho IRIG-B Data vs Bit Number
Bit# Value Definit Bit#Value Definit Bit#
ion
ion
0
Pr - Ref Mark 20
1
Lihora tse 40
1
1
Ea bobeli 21
2
(0-23) 41
ds
(0-59)
2
2
22
4
42
3
4
23
8
43
4
8
24
E sa sebelisoeng
44
d
5
E sa sebelisoeng
25
10
45
d
6
10
26
20
46
7
20
27
E sa sebelisoeng
47
8
40
28
48
9
P1 - Boemo ba ID 29
P3 - Boemo ba ID 49
10
1
11
2
12
4
13
8
Motsotso oa 30
1
s
31
2
(0-59)
32
4
33
8
Matsatsi a 50
lilemo tse 51
(1 366)
52
53
14
E sa sebelisoeng
34
E sa sebelisoeng
54
d
d
15
10
35
10
55
16
20
36
20
56
17
40
37
40
57
18
E sa sebelisoeng
38
80
58
19
P2 - Boemo ba ID 39
P4 - Boemo ba ID 59
Boleng
100 200
Definit Bit# ion
Letsatsi la lilemo tse 60 61 (1 366)
E sa sebelisoeng
62
63
64
65
66
67
68
P5 - Boemo ba ID 69
1
Selemo sa 70
2
(0-99) 71
4
72
8
73
E sa sebelisoeng
74
d
10
75
20
76
40
77
80
78
P6 - Boemo ba ID 79
Boleng
0 0
Definit Bit# ion
Phetolelo ea 80
l
81
Functi
ons
0
82
0
83
0
84
0
85
0
86
0
87
0
88
P7 - Boemo ba ID 89
0
Phetolelo ea 90
0
l
91
Functi
0
tse 92
0
93
0
94
0
95
0
96
0
97
0
98
P8 - Boemo ba ID 99
Boleng
1 2
4 8 16
Ion e hlakileng
Straigh t Binary Secon ds (0-863 99)
32
64 128 256 P9 512 1024 2048 4096 8192
16384 32768 65536 P0 e sa sebelisoeng - ID ea boemo
Tlhokomeliso: Lintlha tse tsoang ho IRIG Standard 200-04 le Wikipedia
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(Hoo e ka bang) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Time Sync Control Functions
5. Laola Mesebetsi
Ka har'a lets'oao la IRIG-B, ho na le li-bits tse 16 tse fumanehang bakeng sa li-bits tse hlalositsoeng ke basebelisi, tse kantle ho litekanyetso tsa IRIG. Ts'ebetso tsena tsa taolo li ka ba le likarolo tse 'maloa tsa bohlokoa tse ka u bolellang bophelo bo botle ba oache, haeba motsotsoana o sa le teng kapa ho fokotsa chelete ea motšehare. Melao e 'meli ea bohlokoa e hlalosang hore na lisebelisoa tsena tsa taolo li lokela ho ba life ke litekanyetso tsa AFNOR le C37.118.1. A re shebeng hore na e 'ngoe le e 'ngoe ea litekanyetso e fana ka eng mabapi le likarolo tsa taolo.
5.1 AFNOR NFS 87-500 Extensions
Tekanyetso ea AFNOR ke tekanyetso ea Sefora e ts'oanang haholo le khoutu ea IRIG-B, e nang le tlhaiso-leseling e eketsehileng mabapi le letsatsi la beke, khoeli le letsatsi la khoeli. Leha ho le joalo, maemo ana ha a amoheloe haholo indastering ea matla. Tekanyetso ena e ntse e tšehetsoa ke barekisi ba lioache ba bangata.
Setšoantšo se latelang se bontša sebopeho sa lets'oao la AFNOR le masimo a eketsehileng a ekelitsoeng.
Setšoantšo sa 5-1. Khoutu ea IRIG-B e nang le AFNOR e Nolofalitsoeng
Tlhokomeliso: E tsoa ho AFNOR NFS 87-500 Standard
5.2 IEEE C37.118.1 (e supeded IEEE 1344 le C37.118) Extensions
Tekanyetso ea IEEE® C37.118.1 ea Synchrophasor Measurements for Power Systems e ile ea lokolloa ka 2011, ho feta maemo a fetileng a C37.118 (2005) le IEEE 1344 (1995). E 'ngoe le e' ngoe ea litekanyetso tsena e ile ea lokolloa 'me ea ntlafatsoa ho tsamaisana le tlhokahalo ea ho beha leihlo nako ea sebele ea litekanyetso tse kang tsa hona joale, frequency, load, vol.tage, joalo-joalo ho qoba ho tima. Ka ho hlahisoa ha Phasor Measurement Units (PMUs), tlhokahalo ea ho nepahala ho phahameng le nako e tšepahalang st.amping e ile ea e-ba tlhokahalo e tiileng ha ho rekota le ho bapisa samples. Liphoso tsa nako pakeng tsa libaka tse peli ka lebaka la oache e sa amaneng li ka baka ho khoptjoa ka phoso, ho etsa hore basebelisi ba etse liqeto tse fosahetseng le tse ka bang bitsa chelete e ngata.
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5.3
(Hoo e ka bang) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Time Sync Control Functions
Ka IRIG-B e le pontšo ea tsela e le 'ngoe, ke hore, ha ho na maikutlo ho oache ho tloha ho lekhoba, masimo a eketsehileng a tlameha ho kenngoa ho khoutu ea IRIG-B ho lumella lisebelisoa tsa makhoba ho etsa qeto ea hore na mohloli oa nako o finyella litlhoko tsa bona tsa ho nepahala, le ho khaotsa ho sebetsa haeba ho nepahala ho tlalehiloeng ho tlaase haholo. Sena se ile sa tlisa ts'ebeliso ea masimo a taolo ka litekanyetso tsa IEEE, 'me masimo a tafoleng e latelang a eketsoa lets'oao.
Lethathamo la 5-1. Fetileview ea Li-Bits tsa Taolo e Ekelitsoeng ho Litlhaloso tsa IEEE
Bit#
Boleng
Tlhaloso
60
0
Leap Second Pending (LSP) - Sebaka sena se fetoha metsotsoana e 1 ho isa ho e 59 pele phallo e kenngoa kapa e hlakoloa. Ebe, e khutlela ho 0 kamora ketsahalo.
61
0
Tloha Bobeli (LS) -0 = Eketsa ea Bobeli (e tloaelehileng haholo) le 1 = Ntša ea Bobeli
62
0
Daylight Saving Pending (DSP)–Lebala lena le fetoha metsotsoana e 1 ho isa ho e 59 pele ho ketsahalo ea DST. E khutlela ho 0 kamora ketsahalo.
63
0
Nako ea Poloko ea Motšehare (DST) -E ba 1 nakong ea DST.
64
0
Letšoao la Nako ea Offset -0 = + le 1 = -
65
1
66
2
67
4
Nako ea Offset -Ena ke nako ea ho tloha ho IRIG-B ho ea ho nako ea UTC ke hore, nako ea nako ea sebaka (+12 hr bakeng sa NZ). Ho nka khato ena, le nako ea IRIG o ka fumana nako ea UTC. Ke hore, nako ea IRIG 12 hr = nako ea UTC
68
8
69
P7 - ID ea boemo
70
0
Nako ea ho fokotsa lihora tse 0.5 -0 = Ha ho na offset le 1 = 0.5-hour offset
71
1
72
2
Nako ea Boleng ba Nako-Ena ke pontšo ea khoutu ea 4-bit ea phoso ea nako ea oache e hakanyetsoang ho tsoa ho UTC. Sheba Lethathamo la 5-2 bakeng sa mefuta eohle ea boleng.
73
4
74
8
75
0
Parity - Ena ke tekanyo ea likarolo tse fetileng. E sebetsa e le cheke ho netefatsa hore lintlha tse fetileng lia utloahala. Parity bit e etsa bonnete ba hore ho etsoa palo e lekanang.
76
1
77
2
Boleng ba Nako e Tsoelang Pele-Ena ke pontšo ea khoutu ea 3-bit ea phoso e hakantsoeng ea nako molaetseng o fetisoang. Sheba Lethathamo la 5-3 bakeng sa mefuta eohle ea boleng.
78
4
79
P8 - ID ea boemo
Nako Boleng
Sebaka sa Boleng ba Nako (TQ) se fana ka pontšo ea ho nepahala ha nako ea letšoao la IRIG-B sebakeng sa "ka nako" se amanang le UTC. Ha e le boemong ba Locked, boleng bona bo lula bo le ho 0, 'me bo tla fetoha feela ha oache e lahleheloa ke senotlolo le lihlopha tsa linaleli tsa satellite, e kena hoholdover.
Lethathamo la 5-2. TQ Maemo a Tšimo le Tlhaloso
Boleng
Tlhaloso
0
Oache e notletsoe mohloling o ka lateloang oa UTC
1
Nako e ka hare ho <1 ns ea UTC
2
Nako e ka hare ho <10 ns ea UTC
3
Nako e ka hare ho <100 ns ea UTC
4
Nako e ka hare ho <1 µs ea UTC
5
Nako e ka hare ho <10 µs ea UTC
6
Nako e ka hare ho <100 µs ea UTC
7
Nako e ka hare ho <1 ms ho tloha UTC
8
Nako e ka hare ho <10 ms ho tloha UTC
9
Nako e ka hare ho <100 ms ho tloha UTC
10
Nako e ka hare ho <1s ea UTC
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(Hoo e ka bang) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Time Sync Control Functions
Lethathamo la 5-2. TQ Field Values le Definition (tsoela pele)
Boleng
Tlhaloso
11
Nako e ka hare ho <10s ea UTC
15
Phoso-Ho hloleha hoa nako, nako ha e tšepahale
5.4 Boleng ba Nako e Tsoelang Pele (CTQ)
Tšimo ea CTQ e fana ka pontšo ea ho nepahala ha nako ea letšoao la IRIG-B ka "ka nako" mabapi le UTC bakeng sa molaetsa o mong le o mong oa IRIG-B. CTQ e kenyellelitsoe ho lets'oao la IRIG-B ho fana ka sesupo sa ho nepahala ha se lumellana joalo ka ha Sesupo sa Boleng ba Nako se lula se bonts'a 0.
Tšimo ena ha e fumanehe maemong a IEEE 1344, e eketsoa ho maemo a morao-rao a C37.118. Tafole e latelang e thathamisa boleng bo fumanehang.
Lethathamo la 5-3. E Fumaneha Maemo a Tšimo a CTQ le Tlhaloso
Boleng
Tlhaloso
0
Ha e sebelisoe (e bontša khoutu ea mofuta o fetileng oa maemo)
1
Khakanyo ea boholo ba phoso ea nako <100 ns
2
Khakanyo ea boholo ba phoso ea nako <1 µs
3
Khakanyo ea boholo ba phoso ea nako <10 µs
4
Khakanyo ea boholo ba phoso ea nako <100 µs
5
Khakanyo ea boholo ba phoso ea nako <1 ms
6
Khakanyo ea boholo ba phoso ea nako <10 ms
7
Phoso e hakantsoeng ea boholo ba nako > 10 mS kapa phoso ea nako ha e tsejoe
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(Hoo e ka bang) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Litlhahiso tsa ho Kenyeha ha Nako ea Sync
6. Litlhahiso tsa ho kenya
Ha u kenya le ho theha marang-rang a IRIG-B, ho na le lintlha tse ngata tse lokelang ho nahanoa.
6.1 Mofuta oa Cable: Shield Twisted Pair (STP) vs Coaxial
Lits'ebetso tse atileng haholo tsa IRIG-B lefats'eng ka bophara li sebelisa thapo ea coaxial joalo ka mokhoa oa phetisetso. Ka kakaretso, RG58 cabling e sebelisoa ho tsamaisa mats'oao a AM le DCLS ka bobeli, kaha ho bonolo ho kenya terata, ho bonolo ho pata lihanyetsi tsa ho emisa 'me e na le litšobotsi tse ntle tsa ho sireletsa.
E latelang e tloaelehileng haholo ke ho sebelisa Shielded Twisted Pair (STP) cabling e kang e fumanoang mohaleng o tloaelehileng oa Ethernet ntle le ka thebe e lohiloeng ho pota-pota ka ntle ho mohala. STP e na le melemo e mengata e kenyeletsang litekanyetso tse phahameng tsa phetisetso, litšoaneleho tse ntle tsa tšireletso (haholo-holo ka lipara tse leka-lekaneng) le litšobotsi tse tlaase tsa bokhoni.
Tabeng ea phetisetso ea IRIG-B, ke efe e molemo?
Karabo ke STP, empa hobaneng?
Lebaka le ka sehloohong, mabapi le hore na ke hobane'ng ha STP e le molemo ho feta coax, ke matla a tlaase a cable.
Bakeng sa letšoao la DCLS le fetisetsoang sebaka se selelele, matla a cable a fetoha a bohlokoa, kaha matla a phahameng a etsa hore mathōko a matšoao a pota-potiloe. Setšoantšo se latelang se bontša liphello tsa bokhoni bo phahameng ba cable ka mahlakoreng a ntseng a phahama le a theoha a letšoao la IRIG-B le qalang ho ba selikalikoe. Ho pota-pota hona ha ho ame feela ho nepahala ha matšoao, empa ho ka boela ha etsa hore li-IED tse ling li khoeme, kapa li hane letšoao ka botlalo.
Ho eketseha ha matla a cable ho boetse ho fokotsa sebaka se akaretsang seo u ka se fetisang lets'oao pele u hloka ho nchafatsa sena. Tabeng ea RG58 cabling, ho khothaletsoa hore libaka tse kholo ho feta 50m ho kenngoe mochine o pheta-phetoang oa lets'oao ho nchafatsa lets'oao. Bakeng sa STP, sebaka sena se nyoloha ho fihla ho 100m pele ho tsosolosoa ho hlokahala.
Setšoantšo sa 6-1. Potoloho ea Letšoao e Bakiloeng ke Bokhoni ba Coaxial Cable
6.2
6.2.1
Ho felisa Resistor
DC Level Shift (DCLS)
Ha u kenya IRIG-B matha, kamehla kenya mochine oa ho emisa qetellong ea cable. Leha IRIG-B e le lets'oao le batlang le le tlase haholo (1 kHz), e ntse e na le likarolo tse phahameng tsa maqhubu tse ka fellang ka lipontšo tse khutšoane tsa maqhubu a maqhubu. Ho eketsa mohanyetsi oa ho emisa qetellong ea mohala ho thibela sena ho etsahala, 'me ho netefatsa hore lisebelisoa tse tsamaeang le IRIG-B ha li sitisoe. E boetse e thusa ho dampen overshoot bakeng sa mela e phahameng ea koloi.
Setšoantšo se latelang se bontša liphello tsa mohala o sa feleng.
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Setšoantšo sa 6-2. Mola o sa Felisoang khahlano le Mola o Felisitsoeng
(Hoo e ka bang) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Litlhahiso tsa ho Kenyeha ha Nako ea Sync
Ho khetha mohanyetsi oa ho emisa bakeng sa thapo ea thapo ea DCLS ho bonolo haholo, o hloka feela ho bapisa mohanyetsi le tšitiso ea thapo.
Bakeng sa khoele e sothehileng e sirelelitsoeng, phepelo ea thapo hangata ke 120 (Bakeng sa mohlalaample, Belden 9841). Bakeng sa cable ea coaxial, ho itšetlehile ka hore na u sebelisa mofuta ofe oa cable, mabapi le mohanyetsi oa ho felisa. Bakeng sa RG58, o ka lebella ho sebelisa sehanyetsi sa 50 se felisang, le bakeng sa RG59 sehanyetsi sa 75.
Ha u khetha resistor, u lokela ho nahana ka tekanyo ea matla. Kaha DCLS hangata ke lets'oao la 5 Vdc,
6.2.2
o ka bala tekanyo ea matla habonolo ka ho sebelisa mofuteng oa E24 (5%) o koahelang boholo ba litlhoko.
. Li-resistors tse kaholimo ho lintlha tsa 0.5W
Tlhokomeliso: Hopola ho ela hloko sehanyetsi sa ho emisa ha u bala palo ea bese, ho etsa bonnete ba hore ha u imelle tlhahiso ea IRIG-B e ngata.
Amplitude Moduled (AM) IRIG-B
Ho khetha mohanyetsi oa ho emisa bakeng sa AM IRIG-B ho fapane hanyane le lets'oao la DCLS. Ho molemo ho nahana ka mohanyetsi oa ho felisa e le voltage divider, e sebedisoang ho tsamaisana le mothapo wa voltage ho litlhoko tsa ho kenya letsoho tsa lisebelisoa tsa makhoba.
Bakeng sa mohlalaample, u ka bona hore setšoantšo se latelang se bontša hore mohanyetsi oa ho felisa o khomaretsoe ho pholletsa le moeli, qetellong ea bese ea IRIG-B. Ka ho e kopanya mona, e atleha ho theha karohano eo karo-karolelano e hlalosoang ka ho hanyetsa ka ho feletseng ha mohala, hammoho le khanyetso ea ka hare ea lioache.
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(Hoo e ka bang) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Litlhahiso tsa ho Kenyeha ha Nako ea Sync
Setšoantšo sa 6-3. Example: Ho Kenngwa tshebetsong ha Mohanyetsi wa Phediso Qetellong ya Bese ya IIRIG-B
Pele o qala palo ena, o tlameha ho tseba lintlha tse latelang: 1. The impedance e ka hare ea tlhahiso ea oache.
Tabeng ea Microchip's power utility utility timing products' ranges's 120. 2. The impedance input of each IED e hokahaneng le bese ea IRIG-B. Bakeng sa boholo ba li-relay, the
range e ho ks. Bakeng sa mohlalaample, re nka hore li-relay tsohle li na le 6 k input impedance. Sena se ka fumanoa maqepheng a mangata a bahlahisi ba li-relay. 3. The input voltagLitlhoko tsa li-IED: Mona ke moo o tlamehang ho fumana hore na boholo ba voltage input hore relay lumella. Sena se ka ba kae kapa kae pakeng tsa 5 le 10 Vdc. Sena se ka fumanoa maqepheng a mangata a bahlahisi ba li-relay. 4. Phallo voltage ea oache: Tabeng ea lihlahisoa tsa nako ea ts'ebeliso ea matla ea Microchip, sena ke 8Vpeak ho fihla sehlohlolong. Kaha joale u na le tlhahisoleseding ena, mohato oa pele ke ho bala palo eohle ea mojaro ka bese ea IRIG-B. Sena se ka etsoa ka ho kopanya litšitiso tsohle tsa ho kenya lisebelisoa tsa makhoba. Ha li ntse li hokahane ka tsela e tšoanang, re ka lebella hore equation e shebahale tjena:
Moo: · RL ke kakaretso e baloang · R1 ho ea ho Rn ke litšitiso tse kenang tsa lisebelisoa tsa makhobaample, re na le li-relay tsa ts'ireletso tse 5 e 'ngoe le e' ngoe e nang le tšitiso ea 6 k. Sena se etsa equation ea rona:
Ho rarolla bothata ba RL:
Kaha joale rea tseba hore na RL ke eng, re ka fumana mohanyetsi o hlokahalang oa ho felisa ka ho sebelisa equation e latelang:
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(Hoo e ka bang) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Litlhahiso tsa ho Kenyeha ha Nako ea Sync
Moo: · Vreq ke palo e fokolang e hlokahalangtage hore sesebelisoa sa lekhoba se sebetse · Vout ke AM IRIG-B output voltage · Rs is the output Impedance of the AM IRIG-B output · RL ke palo yohle ya ho bala · Rterm ke boleng boo re bo rarollang, e leng mohanyetsi wa ho fedisaample, re tla sebelisa litekanyetso tse latelang: · Vreq = 6 Vdc · Vout = 8Vpeak to peak · Rs = 120 · RL = 1,200 Sena se re fa palo e latelang:
Ho tloha mofuteng oa E24, papali e haufi ka ho fetisisa ke 510 resistor e lekaneng ho finyella vol e hlokahalang.tagboemo ba.
6.3 IRIG-B00X Litlhahiso tsa Loading
Potso e atisang ho botsoa ke "Ke lisebelisoa tse kae tsa Intelligent Electronic Devices (IED) tse ka khannang DCLS e le 'ngoe? Potso ena e batla e arajoa kamehla ka "hantle ho ipapisitse le li-IED le ho kenya ..."
Joale, u ka lekanya joang hore na ke lisebelisoa tse kae tse ka tsamaisoang ka tlhahiso e le 'ngoe?
Pele u lokela ho tseba lintlha tse latelang:
· Matla a ho khanna a tlhahiso ea lioache ke afe? Bakeng sa lihlahisoa tsa nako ea ts'ebeliso ea matla ea Microchip, hangata ke 150 mA.
· Ke eng e sitisang ho kenya letsoho ha IED? Kapa metsi a hona joale a IED ke afe? Litekanyetso tsena li lokela ho fumaneha maqepheng a data a barekisi.
· Sebaka se pakeng tsa 1st IED le IED ea ho qetela eo u batlang ho e hokahanya.
Hang ha u se u e-na le boitsebiso bona, ho bala ho bonolo haholo.
Ho bontša mokhoa oa ho etsa palo ena, a re boneng examp'me u sebelise equation e latelang:
Moo:
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(Hoo e ka bang) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Litlhahiso tsa ho Kenyeha ha Nako ea Sync
· IL ke kakaretso ea mojaro oa hona joale · I1 ho ea ho In ke drainage ea hajoale ea IED ka 'ngoe ka beseng ea IRIG-B · Vs ke phepelo ea motlakasetage ho tloha oacheng (hangata 5 Vdc) · Rterm ke mohanyetsi oa ho emisa o tsamaellanang le tšubuhlellano ea thapo (120 bakeng sa tšireletso e sothehileng.
pair cabling)
Mohato oa pele oa ho qala lipalo tsena ke ho tseba hore na IED ka 'ngoe e tla beha moroalo ofe moleng oa IRIG-B. Sena se fapane ho moetsi ka mong.
Ho fumana data ena, o tlameha ho sheba ka har'a database ea IED bakeng sa IRIG-B kapa karolo ea sync ea nako. Mona, ka kakaretso u fumana molumo oa voltage range (5 Vdc) le ebang ke ho sitisa ho kenya (ks) kapa mojaro oa hajoale (mA).
Haeba database e le ntle ho lekana ho ba le mojaro oa hona joale, ona ke boleng ba hau ba I1. Haeba e u fa feela tšitiso ea ho kenya letsoho, u ka bala mojaro oa hajoale u sebelisa foromo e latelang:
Moo · V ke mohloli voltage (5 Vdc) · R ke tšitiso ea tlhahiso ea IED Bakeng sa example, re sebelisa li-relay tsa ts'ireletso tse 25 tse nang le impedance e kenang ea 5 k. Sena se bolela hore IED ka 'ngoe e na le moroalo oa hajoale oa:
Ho pholletsa le li-relay tse 25, sena se fihla ho kakaretso ea 25 mA loading. Sena se re tlisa ho equation ea mantlha:
E kholo! Hona joale, re tseba palo e felletseng ea li-relay ho tlhahiso ea IRIG-B. Ntlha e latelang ke ho hlahloba hore IL ena ha e kholo ho feta matla a ho khanna lioache. Ha lihlahisoa tsa nako tsa ts'ebeliso ea matla tsa Microchip, li fana ka matla a drive a 150 mA, sena se siea 83 mA ho salloa.
E kholo, na ho bolela hore nka eketsa li-relay tse ling tsa 80 moleng ona oa IRIG-B?
Ee, ka botekgeniki o ka eketsa li-relay tse ling tse 80 tlhahisong ena, empa pele u hloka ho nahana ka bolelele ba thapo lipakeng tsa oache le tšubuhlellano ea ho qetela. Haeba bolelele ba thapo bo ntse bo feta 50m, ho khothaletsoa hore o arole li-relay tse setseng ho sephetho se seng kapa u sebelise se pheta-phetoang ho nchafatsa lets'oao lena.
Ho na le mabaka a 'maloa a tlhahiso ena. Ea pele ke hore kamora 50m ea phetisetso, lets'oao la IRIG-B le sekoere le kanna la qala ho bonts'a likarolo tse chitja ha matla a cable a qala ho theola boleng ba lets'oao. E kanna ea qala ho nyenyefatsa ho isa moo li-IED li e hanang joalo ka lets'oao le nepahetseng, kapa ho nepahala ha lets'oao ho fokotseha ka lebaka la mats'oao a mats'oao a holimo le a theohang.
Ho lokisa taba ena, o ka kenya mochine o pheta-phetoang oa lets'oao ho nchafatsa lets'oao, ho fana ka lithōle tse matla haholo tse nyolohang le tse theohang, ho sefa lerata le ho eketsa tšitiso ea ho itšehla thajana.
Ntlha ea bobeli eo u lokelang ho nahana ka eona ke ho lieha ho phatlalatsoa ho bokelletsoeng ha lets'oao ha le ntse le theosa le terata e telele. Bakeng sa Belden 9841 e sirelelitsoeng twisted pair cabling, ho lieha ha phatlalatso ke 5.25 ns/m. Ho feta 50m, sena se eketsa 262.5 ns ea ho lieha. Bakeng sa lits'ebetso tse ngata, sena se fokola haholo
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(Hoo e ka bang) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Litlhahiso tsa ho Kenyeha ha Nako ea Sync
ha sepheo sa hau se nepahetseng ke 1 ms feela. Empa ts'ebelisong eo u ikemiselitseng ho fumana <1 µs ho nepahala, sena se bohlokoa kaha u ka lahleheloa ke 26% ea hlooho ea hau nakong ea tieho ea phetisetso ea thapo.
6.4 IRIG-B12X Litlhahiso tsa Loading
AM IRIG-B e latela mohopolo o fapaneng le oa DCLS IRIG-B. Kaha AM IRIG-B ha e na leeme la DC, tokollo ea hajoale ha e sa le taba empa e se e le voltage drop ke.
Tabeng ea example moo li-IED tse 25 li hokahaneng le bese, taba ea bohlokoa joale e fetoha karolo ea ho kenya letsohotage litlhoko tsa li-IED ha li bapisoa le mohala oa voltage fanoa ho tloha ka oache.
U sebelisa equation karolong ea ho emisa ho hanyetsa, u tlameha ho tseba hore na voltage boemo boo li-IED kaofela li bo amohelang, ebe ba sebetsa ka equation ho fumana hore na molumo o moholo ka ho fetisisa ke ofetage divider ho fihlela seo.
U tlameha ho ela hloko lipehelo tsa hau tsa ho nepahala, 'me u kenye letsoho tiehisong ea phatlalatso e bakoang ke thapo.
Kaha lena ke lets'oao le fetotsoeng le se nang leeme la DC, le itšireletsa lerata haholo mme ka hona le ka fetisoa ho fihla ho 300m ntle le ho hloka sesebelisoa se pheta-phetoang.
6.5 Fiber Installations
Ha o fetisetsa letšoao la IRIG-B sebakeng se selelele kapa ka tikoloho e phahameng ea lerata (EMI), letšoao la DCLS kapa AM IRIG-B e ka 'na ea se ke ea e-ba khetho e ntle ka ho fetisisa. Sena ke ha IRIG-B holim'a sehokelo sa fiber multimode se utloahala.
Ho na le li-advan tse ngatatagke ho sebelisa khokahanyo ea fiber. Tse ling tsa tsona ke:
Ho itšehla thajana ka ho phethahetseng-ho sebelisa sehokelo sa fiber lipakeng tsa oache le IED kapa media converter ho fana ka thibelo ea ho itšehla thajana e sireletsang lisebelisoa tseo ka bobeli, haeba motho a ka kena boemong ba phoso.
· Libaka tse telele tsa phetisetso-u sebelisa sehokelo sa fiber ea multimode u ka fetisa lets'oao ho fihla ho 1 kilometer ntle le tlhokeho ea ba pheta-phetoang.
· Immune to Radiated noise–DCLS ke lets'oao la 5 Vdc le bonolo habonolo lerata le tsoang kantle. U sebelisa sehokelo sa fiber, u tlosa matšoenyeho ana kaha lerata la motlakase ha le ame.
Leha ho le joalo, ho na le mathata a mang a ho sebelisa fiber, a kenyeletsang:
· Point to Point connection-Haeba u na le li-IED tse makholo tse hlokang IRIG-B, joale u hloka mefuta e mengata ea kabo ho arola fiber e le 'ngoe e hlahisoang ka bongata. Sena se fana ka ho itšehla thajana, empa se ka eketsa litšenyehelo tsa ho kenya.
Lihokelo tsa Daisy - ha o sebelisa fiber ho li-IED tse ngata, o hloka ho hokahanya lisebelisoa tsohle. Haeba sesebelisoa se le seng se hloleha, ho na le monyetla oa hore lisebelisoa tsohle tse tlase li lahleheloe ke khokahano.
Mohlomong tsela e molemohali ea ho sebelisa fiber setsing se tloaelehileng ke ho etsa hore likhokahano tsohle tse kantle ho khabinete kapa phanele li phetheloe ka sehokelo sa fiber. U sebelisa li-converter tsa media tse theko e boima, u ka fetolela lets'oao lena la fiber hore e be lets'oao la DCLS kapa AM IRIG-B, 'me u li boloke li le tlase.tage lipontšo tsa lehae ho kabinete. Sena se fana ka karohano e phethahetseng lipakeng tsa liphanele, se tlosa matšoenyeho a pota-potileng lerata le hlahisoang, 'me se tlosa matšoenyeho a mangata ho potoloha sebaka sa phetisetso (u se ke oa lebala ka ho lieha ho phatlalatsoa).
Sena se fa basebelisi mekhoa e metle ka ho fetisisa ea phetisetso ka bobeli.
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(Hoo e ka bang) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Nako Sync Programmable Pulses
7. Li-Pulse tse hlophisitsoeng
Li-pulse tse hlophisehang ke lets'oao le leng le tloaelehileng la nako le fanoang ke hoo e batlang e le lioache tsohle tsa GPS. Li-pulse tse ka reroang ke molumo o phahameng (kapa o tlase) o nang le nako le nako e lokiselitsoeng. Methapo ena e ka tloha ho 1,000 pulse ka motsotsoana ho ea ho sekhahla ka motsotsoana, motsotso, hora, letsatsi joalo-joalo.
Lisebelisoa tse ngata tse sebelisang pulse li hloka Pulse Per Second (PPS) ka nako ea 100 ms. Lipontšo tsa PPS li sebelisetsoa ho eketsa ho nepahala ha liprothokholo tse ling tsa nako tse kang SNTP kapa NTP le likhoele tsa ASCII, ha li ntse li hokahanya k'haonta ea ka hare ea thepa le nako ea nako ea motsotsoana o mocha kapa sebaka sa ho qala ha motsotsoana o mocha. Li-pulse tsena ha li na data ea nako kapa letsatsi.
E fetisoa ka fiber kapa STP, li-pulse hangata li nepahetse haholo, 'me boholo ba tsona li siea boema-kepe ba lioache ka nepo ea <100 ns ho ea ho UTC.
Ka kakaretso, li-pulses ke lets'oao la 5 Vdc, empa li ka fihla ho 24 Vdc ho latela ts'ebeliso. Li-pulse li ntse li sebelisoa haholo kajeno, 'me li sebetsa e le litšupiso tse tloaelehileng bakeng sa lisebelisoa tse ngata.
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(Hoo e ka bang) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Nako ea Sync Summary
8. Kakaretso
IRIG-B ke e 'ngoe ea matšoao a tloaelehileng a nako a sebelisoang indastering ea matla ho fihlela joale. E sebelisetsoa ho beha nako lits'ebetso tse mahlonoko le tse seng tsa bohlokoa, ho fana ka mohloli o nepahetseng oa nako ho lisebelisoa tsohle tse hokahaneng, 'me ho ka etsahala hore e lule e le protocol ea bohlokoa ea nako bakeng sa lilemo tse tlang. IRIG-B ha se protocol ea nako e phethahetseng mme joalo ka ha ho builoe e hloka tlhokomelo ha e tsamaisoa tšimong ho netefatsa ts'ebetso e se nang mathata.
Haeba u na le lipelaelo mabapi le ho kenya IRIG-B ka har'a kopo ea hau, kapa u na le lipotso tse amanang le ho kenya IRIG-B ka har'a kopo ea hau, re khothaletsa hore u ikopanye le Microchip kapa e mong oa balekane ba rona ba indasteri.
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(Hoo e ka bang) Ntho e 'ngoe le e' ngoe eo U Lokelang ho e Tseba ka IRIG-B Nako Sync
Boitsebiso ba Microchip
Matšoao a khoebo
Lebitso la "Microchip" le logo, "M" logo, le mabitso a mang, li-logo, le li-brand ke matshwao a khoebo a ngolisitsoeng le a sa ngolisoang a Microchip Technology Incorporated kapa mekhatlo e amanang le eona le/kapa makala a United States le/kapa linaheng tse ling ("Microchip Trademarks"). Tlhahisoleseding mabapi le Microchip Trademarks e ka fumanoa ho https://www.microchip.com/en-us/about/legalinformation/microchip-trademarks.
ISBN: 979-8-3371-0779-0
Tsebiso ea Molao
Khatiso ena le lintlha tse mona li ka sebelisoa feela le lihlahisoa tsa Microchip, ho kenyeletsoa ho rala, ho leka, le ho kopanya lihlahisoa tsa Microchip le kopo ea hau. Tšebeliso ea tlhahisoleseling ena ka tsela efe kapa efe e tlola melaoana ena. Lintlha mabapi le lits'ebetso tsa sesebelisoa li fanoe molemong oa hau feela 'me li ka nkeloa sebaka ke liapdeite. Ke boikarabello ba hau ho netefatsa hore kopo ea hau e kopana le litlhaloso tsa hau. Ikopanye le ofisi ea thekiso ea Microchip e sebakeng sa heno bakeng sa tšehetso e eketsehileng kapa, fumana tšehetso e eketsehileng ho www.microchip.com/en-us/support/design-help/ client-support-services.
TSEBISO ENA E FUMANA KE MICROCHIP "JOALOKAHA E LE". MICROCHIP HA E ETSE LITLHAKISO KAPA LITIISETSO TSA MOFUTA OFE kapa O fe Ebang E BONAHALA KAPA E BONAHALA, E NGOLOA KAPA MOLOMO, MOLAO KAPA HO SE EMONG, E Amanang le LITSEBISO HO kenyeletsoa EMPA E SA FUMANE LE TIISETSO EFE KAPA EFE E FUMANEHLENG LE TLAMELO. BAKENG SA MORERO O KHETHEHILENG, KAPA LITIISETSO TSE AMANG LE MAEMO A OONA, BOLEMO, KAPA KETSAHALO EA OONA.
HA HO LE TSATSAHALO, MICROCHIP E TLA BA MOTHO OA MOLATO BAKENG SA LITABA LIFE, TSE KHETHEHILENG, TSA KOTSI, TSATSAHALO, KAPA TAHLEHELO E LATELANG, TŠENYEHO, LITŠEnyehelo, KAPA LITJEHO TSA MOFUTA OFE O TLANG LE LITSEBISO KAPA TŠEBELETSO EA LONA, LE HO KA ETSAHALA KETSAHALO E ETSANG. TSE KA E KA ETSAHANG KAPA MESEKO E BONAHALA. HO FIHLELA KA HO FETISISA HO DUMELLA KE MOLAO, BOIKARABELO KAOFELA BA MICROCHIP HO LIKELETSO KAOFELA KA TSELA EFE KAPA E MABAPI LE TSEBISO KAPA TŠEBELETSO EA YONA E KE KE E FEELA BOLIMO OA LITEFO, HA E LE TSE LE FELA, TSEO U LI LEFILENG KA THOTLHALA BAKENG SA MICROCHIP.
Tšebeliso ea lisebelisoa tsa Microchip ts'ehetso ea bophelo le/kapa lits'ebetso tsa ts'ireletso e kotsing ea moreki, 'me moreki o lumela ho sireletsa, ho qosa le ho boloka Microchip e se nang kotsi ho tsoa lits'enyehelo tsohle, likopo, lisutu, kapa litšenyehelo tse bakoang ke ts'ebeliso e joalo. Ha ho lilaesense tse fetisoang, ka mokhoa o hlakileng kapa ka tsela e 'ngoe, tlasa litokelo life kapa life tsa thepa ea mahlale a Microchip ntle le ha ho boletsoe ka tsela e ngoe.
Karolo ea Tšireletso ea Khoutu ea Lisebelisoa tsa Microchip
Ela hloko lintlha tse latelang tsa ts'ireletso ea khoutu lihlahisoa tsa Microchip:
· Lihlahisoa tsa Microchip li kopana le litlhaloso tse ka har'a leqephe la tsona la Microchip Data Sheet.
· Microchip e lumela hore lelapa la eona la lihlahisoa le bolokehile ha li sebelisoa ka mokhoa o reriloeng, ka har'a litlhaloso tsa ts'ebetso, le tlas'a maemo a tloaelehileng.
· Mekhahlelo ea Microchip le ho sireletsa litokelo tsa thepa ea mahlale a eona ka mabifi. Boiteko ba ho tlola likarolo tsa ts'ireletso ea khoutu ea lihlahisoa tsa Microchip bo thibetsoe ka thata mme bo ka tlola Digital Millennium Copyright Act.
· Leha e le Microchip kapa leha e le efe semiconductor moetsi ka tiisa tšireletseho ea khoutu ea eona. Tšireletso ea khoutu ha e bolele hore re tiisa hore sehlahisoa "se ke ke sa robeha". Tšireletso ea khoutu e lula e fetoha. Microchip e ikemiselitse ho tsoela pele ho ntlafatsa likarolo tsa ts'ireletso ea khoutu ea lihlahisoa tsa rona.
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Litokomane / Lisebelisoa
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MICROCHIP IRIG-B Analyzer [pdf] Buka ea Taelo IRIG-B Analyzer, Analyzer |