INTERNATIONAL TELECOMMUNICATION UNION 02/4%#4)/.!'!).34 ).4%2&%2%.#%

Size: px
Start display at page:

Download "INTERNATIONAL TELECOMMUNICATION UNION 02/4%#4)/.!'!).34 ).4%2&%2%.#%"

Transcription

1 INTERNATIONAL TELECOMMUNICATION UNION )454 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU 02/4%#4)/!'!)34 )4%2&%2%#% #!,#5,!4)/ /& 6/,4!'% )$5#%$ )4/ 4%,%#/--5)#!4)/,)%3 &2/- 2!$)/ 34!4)/ "2/!$#!343!$ -%4(/$3 /& 2%$5#)' )4%2&%2%#% )454 Recommendation (Extract from the "LUE "OOK)

2 NOTES ITU-T Recommendation K8 was pubished in oume IX of the Bue Book This fie is an extract from the Bue Book Whie the presentation and ayout of the text might be sighty different from the Bue Book version, the contents of the fie are identica to the Bue Book version and copyright conditions remain unchanged (see beow) 2 In this Recommendation, the expression Administration is used for conciseness to indicate both a teecommunication administration and a recognized operating agency ITU 988, 993 A rights reserved No part of this pubication may be reproduced or utiized in any form or by any means, eectronic or mechanica, incuding photocopying and microfim, without permission in writing from the ITU

3 Recommendation K8 oume IX - Rec K8 CALCULATION OF OLTAGE INDUCED INTO TELECOMMUNICATION LINES FROM RADIO STATION BROADCASTS AND METHODS OF REDUCING INTERFERENCE Geneva, 980, modified at Maaga-Torremoinos, 984 and at Mebourne, 988) Introduction Athough inductive interference from radio waves is sedom observed on circuits in underground cabes, many exampes of such interference have been reported in circuits carried by open wires, aeria cabes or cabes inside buidings Interference on voice-frequency circuits occurs because the induced radio wave is detected and demoduated by the noninear components in a teephone set or by meta oxide ayers formed at conductor joints This interference is mosty inteigibe noise and may occur up to 5 km from a radio station whose radiating power is more than severa tens of kiowatts On carrier or video transmission circuits, the induced radio wave impairs circuit performance when the radio-wave frequency is within the operating frequency of the transmission system The interference usuay consists of a singe frequency tone within a teephone channe and is uninteigibe It reduces the signa-to-noise ratio (SNR) for the transmission system This interference may occur within a wide area around a radio station Interference on video transmission circuits has been reported in ony a few cases, but it is expected to cause serious probems when video transmission services increase in number in the future An unusua exampe of interference may arise in which outside pant maintenance personne receive burns due to radio frequency currents Such probems have been reported ony in the immediate vicinity of a radio station antenna 2 Anaysis of interference In the theoretica anaysis of the votage induced from a radio wave, the foowing conditions are assumed: Earth resistivity is homogeneous and uniform A cabe or a wire is supported in a straight ine at a constant height above the earth s surface The metaic screen of a cabe is earthed at both ends The radio-wave eectric fied has a constant intensity and a constant incidence ange, and phase change aong the cabe is uniform The radio wave is originay poarized verticay However, whie it propagates aong the surface of the earth, a horizonta component is generated due to the finite conductivity of the earth Constants and variabes used for theoretica anaysis are shown in Annex A 2 For teecommunication ines without a metaic screen, the horizonta component of the radio-wave eectric fied acts directy as an eectromotive force on the teecommunication ine This causes induced noise at terminas when the circuit has an impedance unbaance with respect to earth Induced ongitudina votages at the ends of a teecommunication ine without a metaic screen are given by Equations (B-) and (B-2) 22 For teecommunication cabes with a metaic screen, the horizonta component of the radio-wave eectric fied acts as an eectromotive force, causing induced current to fow in the earth return circuit composed of the metaic screen of the cabe and the earth Due to the current in the screen, an eectromotive force is induced in the conductors through the transfer impedance between the conductors and the metaic screen This eectromotive force may cause disturbance to metaic circuits in the cabe, according to the degree of their unbaance with respect to the metaic screen (or the earth) Induced ongitudina votages at the ends of a teecommunication cabe with a metaic screen are given by Equations (B-3) and (B-4) In reference [] the vaues obtained by using these equations are shown to agree with measured vaues oume IX - Rec K8

4 23 The equations in Annex B are very compicated and invove many parameters It is therefore usefu to estimate the approximate vaue of the maximum induced ongitudina votage by the foowing simpified equation: where [ ( )] = 20 0 ( ) (0) db og ( cos θ) PEv ZK = 20 og 0 30 og 0 f 20 og 0α (2-) 4Z 0 5 β0 08 f β2 20 Ω < ZR, ZL Z γ = α jβ α = α f (db / km) (2-2) (2-3) α 20 is the attenuation coefficient at MHz (db/km) f is the radio-wave frequency expressed in Hz Other constants and variabes are shown in Annex A Equation (2-), which gives the maximum induced ongitudina votage in db (0 db = 0775 ), is obtained on the basis of the foowing: ength The induced ongitudina votage cacuated by the equations in Annex B reaches an initia peak vaue when cabe = 5 β f β and subsequenty describes a series of peak vaues Its maximum vaue occurs at one of the earies peak vaues aong the cabe ength 5 β f β The induced ongitudina votage reaches its maximum at one of the eariest peak vaues due to the attenuation of the induced radio wave aong the cabe (Figure 3/K8) The errors invoved in using Equation (2-) instead of the fu equations of Annex B are described in detai in Annex C 24 If the ine configuration is very compicated, it is necessary to divide the ine into severa segments and to estimate the induced ongitudina votage for each segment by Equations (B-) to (B-4) Estimated induced votages for each segment are then combined to obtain the overa induced votage, taking into account the transmission characteristics and the boundary conditions of the ine invoved When the simpified equation (2-) is appied to a compicated ine, a straight ine mode may be used to estimate the maximum induced ongitudina votage Cacuations shoud commence at the point nearest to the radio station and the smaest vaue of radio wave incidence ange shoud be used 25 When fied measurement of the radio-wave eectric fied strength is carried out, the measured vaue may be used for E v in Equation (2-) When the measured vaue is not avaiabe, the radio-wave eectric fied strength E v can be cacuated by Equation (2-4), taking into account the distance from the radio station and the power of the radio station transmitter (see [2]) 2 oume IX - Rec K8

5 PZ Ev = 5 0 (2-4) r 2π where P is the radio station transmitting power (W) r is the distance from radio station (m) Z 0 is the instrinsic impedance of free space ( 377 Ω) Figure /K8 shows vaues of E v obtained from Equation (2-4) using various vaues of P 26 The ange of incidence made by the radio wave onto the teecommunication ine may vary according to circumstances When the teecommunication ine is instaed in open country, either a measured vaue of the incidence ange or a vaue cacuated from the reative ocation of the radio station and the teecommunication ine may be used When the teecommunication ine is instaed near structures which obstruct radio wave propagation, the incidence ange may be taken as zero and the severest condition assumed 27 The induced ongitudina votage at the ends of the teecommunication cabe shown in Figure 2/K8 may be estimated using the simpified method which foows Inserting the vaues for parameters P, f, α 20, β 2 and θ given in Figure 2/K8 together with cacuated vaues for E v and Z K into Equations (2-) and (2-2), the foowing resuts are obtained: 2 (0) 2 () = 350 db 20 m oume IX - Rec K8 3

6 Moreover, using θ = 0 as the most severe vaue, the foowing is obtained: 2 (0) 2 () = 320 db 20 m In Figure 3/K8 the resuts obtained by using the simpified cacuations are compared with others derived from using the more rigorous methods described in Annex B, in which vaues of 2 reated to cabe ength are expressed It is apparent that the simpified method is adequate for estimating the most severe interference ikey to be experienced 4 oume IX - Rec K8

7 28 Transverse votages which cause noise arise due to the imperfect baance of the circuit with respect to the metaic screen (or earth) If a ratio, λ is used to reated ongitudina and transverse votages, noise eves may be obtained from cacuated or measured vaues of the induced ongitudina votage: where = λ 2 2 [ 2 (0) or 2 ()] is the ongitudina votage at the ends of the ongitudina circuit under open circuit conditions, [(0) or ()] is the transverse votage at the ends of the circuit when terminated with its characteristic impedance at both ends For exampe, in the case shown in Figure 2/K8 and λ equa to 40 db, the noise eve, is obtained as foows: (in this case, 2 = 35 db [0 db = 0775 ]) = db = 75 db 3 Reduction of interference The foowing measures may be taken to minimize interference: 3 Interference to a voice-frequency circuit can be reduced by inserting a µf capacitor between conductors and the earth at the input termina or at the teephone set, to bypass induced radio-wave currents 32 Interference to carrier and video transmission systems can be reduced by the foowing measures: oume IX - Rec K8 5

8 32 An adequate screen shoud be incorporated in the cabe, eg a 02 mm thick auminium screen around a cabe provides a reduction of interference of about 70 db The auminium screen shoud be earthed at both ends with resistance ess than Z 0 Ω, when earth conductivity is ess than 0 S/m If the screen thickness is increased to 0 mm the reduction is improved by a further db 322 Conductors shoud be competey shieded by a metaic screen around cabe joints and at cabe terminas Note If the metaic screen is removed for a ength of about 30 cm, induced votages increase by about 30 db, even if the metaic screen is connected eectricay Even if ony 5 cm of the metaic screen is removed from a cabe end, induced votages increase by about 0 db 323 In sections susceptibe to radio-wave interference, underground cabe shoud be instaed or different cabe routings shoud be used 324 Distances between repeaters shoud be reduced to provide an acceptabe signa-to-noise ratio (SNR) for the system 325 The admittance unbaance of the termina equipment and repeaters at the radio-wave frequency shoud be improved with respect to earth 326 Pre-emphasized eve setting of the transmission system shoud be used 33 To reduce the induced dangerous votage to mainteance personne, a capacitor may be inserted between the conductors and the earth at suitabe intervas within the induced section to bypass the induced current In this case, care must be taken, in seecting an appropriate capacitor, to combine minimum attenuation of the transmission frequencies with effective earthing at the radio-wave frequency Care shoud be taken to prevent the capacitor from being damaged by overvotages appearing on the conductors ANNEX A (to Recommendation K8) Constants and variabes used in Recommendation K8 A The ratio of horizonta component to vertica component, P for a radio-wave eectric fied propagating aong the ground surface is: P Eh = = E v ε r j σ ωε 0 ωε σ 0 (A ) where E h E v ε r ε 0 Z 0 β 0 σ ω f is the horizonta component in radio wave eectric fied strength (/m) is the vertica component in radio wave eectric fied strength (/m) is the specific dieectric constant of earth is the specific dieectric constant of free space (F/m) is the intrinsic impedance of free space (Ω) is the phase constant of free space (rad/m) is the earth conductivity (S/m) is the anguar frequency of radio wave (rad/s) is the frequency of radio wave (Hz) 6 oume IX - Rec K8

9 A2 The transfer impedance of the metaic screen of a cabe sheath, Z K is: Kt ZK = sinh Kt Rdc Ω/m (A-2) where R dc is the direct-current resistance per unit ength of metaic screen (Ω/m) K = jωµ g µ is the permeabiity of metaic screen (H/m) g t is the conductivity of metaic screen (S/m) is the thickness of metaic screen (m) A3 In connection with the foowing symbos, see Figure A-/K8 θ x Z 0 γ Z 02 γ 2 Z L, Z R Z 2L, Z 2R is the incidence ange of radio wave to teecommunication ine (rad) is the cabe ength (m) is the distance aong the cabe from the cabe end near to the radio station (meters) is the earth return circuit characteristic impedance (Ω) is the earth return circuit propagation constant is the ongitudina circuit characteristic impedance (Ω) is the ongitudina circuit propagation constant earth return circuit termina impedance (Ω) ongitudina circuit termina impedance (Ω) Z0 ZL Γ L = Z0 ZL is the earth return circuit current refection coefficient at x = 0 Z0 ZR Γ R = Z0 ZR is the earth return circuit current refection coefficient at x = Z Z 02 2L Γ 2 L = Z02 Z2L is the ongitudina circuit current refection at x = 0 Z Z 02 2R Γ 2 R = Z02 Z2R is the ongitudina circuit current refection at x = m (x) (for m = 0) is the votage in earth return circuit with matching at both ends m (x) (for m = L) is the votage in earth return circuit with mismatching at x = 0 m (x) (for m = R) is the votage in earth return circuit with mismatching at x = 2m (x) (for m = 0) is the votage in ongitudina circuit with matching at both ends 2m (x) (for m = L) is the votage in ongitudina circuit with mismatching at x = 0 oume IX - Rec K8 7

10 2m (x) (for m = R) is the votage in ongitudina circuit with mismatching at x = ANNEX B (to Recommendation K8) Induced ongitudina votage cacuation B Teecommunication ines without metaic screen Induced ongitudina votages at the ends of a teecommunication ine without a metaic screen are given by Equations (B-) and (B-2) Induced ongitudina votage at the end nearest the radio station: (0) = (0) (0) (0) 0 L R (0) 0 = PE v cos θ 2 L L (0) = Γ Γ Γ [ Γ e 2γ R ] L R e γ R e γ j β cos θ e 2γ [ ΓL] R (0) = Γ Γ Γ e L R 2γ ( γ j β0 cos θ) 0 0 (0) () (B-) 8 oume IX - Rec K8

11 Induced ongitudina votage at the end farthest from the radio station: ( ) = ( ) ( ) ( ) 0 L R () = [ Γ R] L e L () = Γ γ Γ Γ e 2γ 0 R () PEv cos θ e 2 L R j β0 cosθ 2γ R L Γ L R e 2 Γ γ e γ j β cos θ 0 e = Γ [ Γ ] (0) 0 ( γ j β0 cos θ) 0 () (B- 2) where the constants and variabes are as shown in Annex A B2 Teecommunication cabes with metaic screen Induced ongitudina votages at the ends of a teecommunication cabe with a metaic screen are given by Equations (B-3) and (B-4) Induced ongitudina votage at the end nearest to the radio station: ( 0) = ( 0) ( 0) ( 0) L 2R ( 0) = ( 0) = ( 0) = 20 2L 2R PE L v (cos θ) ZK 4 Z0 γ j β0 cos θ γ j β0 cos θ e ( γ2 j β0 cos θ) γ 2 2 j β0 cos θ γ j β0 cos θ ΓL ΓR e γ Γ e ( γ jβ0 θ γ j β cos θ L R 0 2γ cos ) L 2γ j β cos θ γ e 0 e R L e ( γ j β0 cos θ) e ( γ2 γ) e ( γ j β0 cos θ) γ j β0 cos θ γ2 γ γ j β0 cos θ Γ Γ e Γ [ Γ2R e 2γ2] [ Γ2L ] Γ Γ e Γ R e ( γ jβ0 θ γ j β cos θ 0 2 Γ j 0 (cos ) R e β θ e γ e j cos Γ2L Γ Γ 2L Γ 2R e e 2γ γ2 2R Γ 2 2L Γ2R e γ cos ) e γ β θ γ γ 20 ( γ j β cos θ) ( γ γ ) ( 0) 0 2 () (B- 3) oume IX - Rec K8 9

12 Induced ongitudina votage at the end farthest from the radio station: () = () () () 2 ( ) = 20 2R 20 2L 2R PE cos θzk 4 Z0 γ j β0 cos θ γ j β0 cos θ e ( γ2 j β0 cos θ) e jβ0 cos θ γ2 j β0 cos θ γ jβ0 cos θ Γ Γ e L R 2γ Γ L e γ jβ ( γ j β0 cos θ) cos θ ( j cos ) e γ e 0 e γ j β cos θ γ γ γ β θ ( γ2 γ) 0 e ( γ j β cos θ) γ j β cos θ L R 0 2 Γ Γ e 2γ L R e γ Γ Γ e γ L ΓR 2 Γ j β0 cos θ e ( γ j β0 cos θ) e ( γ β0 θ Γ j cos R e β0 θ e γ γ j β cos θ γ j β cos θ 0 ( γ2 γ) 2L [ Γ2R] Γ2L e γ2 2L () = Γ Γ e 2γ2 () = e γ γ 2 Γ2R Γ 2R [ Γ2L e 2γ2] Γ 2L 2R e e γ 2γ ( 0) () 0 j cos ) (B- 4) where the constants and variabes are as shown in Annex A 0 oume IX - Rec K8

13 ANNEX C (to Recommendation K8) Errors invoved in using simpified equation (2-) Simpified Equation (2-) can be used when 3 db/km α db/km, 2 β 0 β 2 3 β 0, 500 khz f 6 MHz, 0 mm d 50mm, 0 θ 90, 0 ms/m σ 500 ms/m and Γ Those conditions are ikey to appy for overhead cabes The error which arises from using Equation (2-) instead of the more rigorous method described in Annex B depends on the vaues of σ and Γ, rather than other parameters An exampe of this is shown in Figure C-/K8 The error is shown in Tabe C-/K8, corresponding to the (σ, Γ) range in Figure C-2/K8 Here ony the range of Γ 0 is considered, because Z Z 0 can be reaized easiy Range (I) in Figure C-2/K8 is the usua case, whie ranges (II) and (I) are rare cases and range (III) is difficut to reaize In a range having a arge error (for exampe, ranges II, III and I), or when the cabe ength is too short to satisfy Equation (2-2), it is better to cacuate by using the rigorous method of Annex B oume IX - Rec K8

14 TABLE C-/K8 The error in Equation (2-) compared with resuts using the rigorous method of Annex B (I) (II) (III) (I) Range (usua case) (rare case) (rare case) (rare case) Error ± 5 db ± 8 db 5 5 db 5 23 db ANNEX D (to Recommendation K8) Effect of the environment of the teecommunication ine on the measured radio-wave eectric fied (Report from NTT) The radio-wave eectric fied strength is not affected by the environment of the teecommunication ine and may be taken to be the theoreticay cacuated vaue (see Figure D-/K8) On the other hand, the radio-wave incidence ange to the teecommunication ine may be infuenced by a number of factors and it may be difficut to estimate a precise vaue However, in open country, the measured incidence ange between the radio wave and the teecommunication ine is in good agreement with the vaue cacuated from the reative ocations of the radio station and the teecommunication ine (Figure D-2/K8) 2 oume IX - Rec K8

15 oume IX - Rec K8

16 4 oume IX - Rec K8

17 ANNEX E (to Recommendation K8) Exampes of ratio λ between induced ongitudina and transverse votages (Report from NTT) Longitudina and transverse (noise) votages induced by radio wave on overhead cabes were measured in fieds Figure E-/K8 shows exampes of λ obtained from measured ongitudina votage 2 and transverse votage (λ = 2 db) oume IX - Rec K8

18 6 oume IX - Rec K8

19 ANNEX F (to Recommendation K8) Exampes of radio wave interference and countermeasures in various countries (Based on the report by the Specia Rapporteur, submitted to the 978 Study Group meeting) Exampes of radio-wave induction interference to teecommunication systems and some countermeasures have been coected and are summarized in Tabe F-/K8 Radio-wave induction interference to circuits in buried or underground cabes were found to be rare oume IX - Rec K8

20 TABLE F-/K8 Radio-wave induction interference and countermeasures Kind of Inducing radio wave Affected area Circuit condition circuits eectric fied reated to Frequency Power intensity interference Interference Countermeasure oicefrequency circuit LF MF (mainy broadcasting) Severa tens of kw Up to 5 km from radio station (severa /m) Overhead cabe (pastic sheathed with and without metaic screen, ead sheathed) Open wire Demoduated inteigibe noise from radio programme, at time uninteigibe Insertion of capacitors (at input terminas of teephone set) Repacement by cabe with metaic screen, Screening drop wire Insertion of choke coi in circuit Highfrequency circuit eg carrier transmission LF MF Mainy MF Severa kw Up to severa tens of km In the case of subscriber carrier system interference up to neary 000 km has been reported (003 to 8 v/m) Mainy overhead cabe with metaic screen (baanced pair, coaxia pair) Cabing in buiding (between mutipex and antenna, between demoduation stages) Open wire Singe tone or uninteigibe noise in demoduated teephone channe (degradation of SNR in transmission system Improvement in shieding efficiency for cabe, cabing, etc Improvement on earthing of cabe sheath, repeater, termina equipement, etc Adopt buried or underground cabe Adopt different cabe route Increase signa eve, shortening repeater spacing Compensation for pair conductor admittance unbaance with respect to earth Additon of a compandor to the termina end of the open-wire carrier circuit Instaation of a sufficienty baanced ongitudina choke coi to the carrier circuits Radio frequency heating MF (broadcasting) Immediate vicinity of radio station antenna Open wire Drop wire Radio frequency burns Capacitor insertion between conductors and earth 8 oume IX - Rec K8

21 ANNEX G (to Recommendation K8) Radio wave interference to repeater station coaxia cabing and countermeasures G Affected transmission systems and interference Interference has been experienced in carrier transmission systems in repeater stations due to radio-emissions When the induced radio wave frequency fas within the transmission frequency band, it causes singe tone or uninteigibe noise in the demoduated teephone channe The interference is caused by induced currents in the outer conductors or screens of the coaxia cabes in the repeater station Interfering frequencies of radio waves are mainy medium frequency (MF) and high frequency (HF) (of the order of -5 MHz) G2 Eectric fied strength Radio wave interference occurs when the eectric fied strength exceeds 00 dbµ/m outside the station buiding or 80 dbµ/m inside the station buiding The degree of attenuation provided by the buiding depends on the form of construction used In the case of a concrete buiding, for exampe, the attenuation may be db, at -5 MHz The eectric fied in the buiding is not homogeneous, and arge variations, of about db, have been observed G3 Countermeasures One of the most efficient protective measures is the improvement of screening for coaxia cabes The screening efficiency for a coaxia cabe depends on its transfer impedance (Z T ), and adopting a coaxia cabe with ower transfer impedance is usefu For exampe, µ-meta screened coaxia cabe (eg Z T 00 mω/m at MHz) and tripe-braided (screened) coaxia cabe (eg Z T 0 mω/m at MHz) have been used For exampe, a 5-20 db reduction can be obtained by repacing a doube-braided coaxia cabe with a tripe-braided one The use of a ow transfer impedance connection between the station cabe and the equipment and the provision of good earthing arrangements in the repeater station aso give benefits References [] SATO (T), NAKAHIRA (M), KOJIMA (N): Radio wave interference in overhead communication cabes, Proceedings of the 22nd IWCS, 973 [2] SCHULZ (E), OGEL (W): Beeinfussung von Trägerfrequenz-Nachrichtensystemen durch hochfrequente Beeinfussungsqueen, ETZ-A, Bd 85, H 20, 964 oume IX - Rec K8

SURGE ARRESTERS FOR CABLE SHEATH PREVENTING POWER LOSSES IN M.V. NETWORKS

SURGE ARRESTERS FOR CABLE SHEATH PREVENTING POWER LOSSES IN M.V. NETWORKS SURGE ARRESTERS FOR CABLE SHEATH PREVENTING POWER LOSSES IN M.V. NETWORKS A. Heiß Energie-AG (EAM), Kasse G. Bazer Darmstadt University of Technoogy O. Schmitt ABB Caor Emag Schatanagen, Mannheim B. Richter

More information

Communication Systems

Communication Systems Communication Systems 1. A basic communication system consists of (1) receiver () information source (3) user of information (4) transmitter (5) channe Choose the correct sequence in which these are arranged

More information

Understanding The HA2500 Horizontal Output Load Test

Understanding The HA2500 Horizontal Output Load Test Understanding The HA2500 Horizonta Output Load Test Horizonta output stages are part of every CRT video dispay incuding cosed circuit monitors, computer monitors, video games, medica monitors, TVs. HDTVs,

More information

Fast Ferrite ICRF Matching System in Alcator C-Mod*

Fast Ferrite ICRF Matching System in Alcator C-Mod* Poster QP-00053, 48 th APS-DPP Annua Meeting, Phiadephia, PA, 006 Fast Ferrite ICRF Matching System in Acator C-Mod*. Lin, A. Binus, A. Parisot, S. Wukitch and the Acator C-Mod team MIT, Pasma Science

More information

LIGHTNING PROTECTION OF MEDIUM VOLTAGE OVERHEAD LINES WITH COVERED CONDUCTORS BY ANTENNA-TYPE LONG FLASHOVER ARRESTERS

LIGHTNING PROTECTION OF MEDIUM VOLTAGE OVERHEAD LINES WITH COVERED CONDUCTORS BY ANTENNA-TYPE LONG FLASHOVER ARRESTERS C I R E D 17 th Internationa Conference on Eectricity Distribution Barceona, 12-15 May 23 LIGHTNING PROTECTION OF MEDIUM VOLTAGE OVERHEAD LINES WITH COVERED CONDUCTORS BY ANTENNA-TYPE LONG FLASHOVER ARRESTERS

More information

Estimation and Control of Lateral Displacement of Electric Vehicle Using WPT Information

Estimation and Control of Lateral Displacement of Electric Vehicle Using WPT Information Estimation and Contro of Latera Dispacement of Eectric Vehice Using WPT Information Pakorn Sukprasert Binh Minh Nguyen Hiroshi Fujimoto Department of Eectrica Engineering and Information Systems, The University

More information

OpenStax-CNX module: m Inductance. OpenStax College. Abstract

OpenStax-CNX module: m Inductance. OpenStax College. Abstract OpenStax-CNX modue: m42420 1 Inductance OpenStax Coege This work is produced by OpenStax-CNX and icensed under the Creative Commons Attribution License 3.0 Cacuate the inductance of an inductor. Cacuate

More information

RESEARCH OF UHV CIRCUIT BREAKER TRANSIENT RECOVERY VOLTAGE CHARACTERISTIC

RESEARCH OF UHV CIRCUIT BREAKER TRANSIENT RECOVERY VOLTAGE CHARACTERISTIC .P.B. Sci. Bu., Series C, Vo. 79, Iss. 3, 217 ISSN 2286-354 RESEARCH OF HV CIRCIT BREAKER TRANSIENT RECOVERY VOLTAGE CHARACTERISTIC Baina HE 1, Yunwei HAO 2 The most critica transient a circuit breaker

More information

Powerfully simple event analysis software

Powerfully simple event analysis software synchrowave Event Software Powerfuy simpe event anaysis software Diagnose reay behavior during a power system faut. Time-aign event reports from mutipe reays for comparison and anaysis. Create custom cacuations,

More information

R is in the unit of ma/mw or A/W. For semiconductor detectors, the value is approximately, 0.5 ma/mw.

R is in the unit of ma/mw or A/W. For semiconductor detectors, the value is approximately, 0.5 ma/mw. Light Detection Conventiona methods for the detection of ight can be categorized into photo-synthesis, photographic pate, and photoeectric effect. Photo-synthesis and photographic pate are based on ight-induced

More information

Improving the Active Power Filter Performance with a Prediction Based Reference Generation

Improving the Active Power Filter Performance with a Prediction Based Reference Generation Improving the Active Power Fiter Performance with a Prediction Based Reference Generation M. Routimo, M. Sao and H. Tuusa Abstract In this paper a current reference generation method for a votage source

More information

Debugging EMI Using a Digital Oscilloscope

Debugging EMI Using a Digital Oscilloscope Debugging EMI Using a Digita Oscioscope 06/2009 Nov 2010 Fundamentas Scope Seminar of DSOs Signa Fideity 1 1 1 Debugging EMI Using a Digita Oscioscope Background radiated emissions Basics of near fied

More information

Implementation of PV and PIV Control for Position Control of Servo Motor

Implementation of PV and PIV Control for Position Control of Servo Motor IJSRD - Internationa Journa for Scientific Research & Deveopment Vo. 5, Issue 1, 2017 ISSN (onine): 2321-0613 Impementation of PV and PIV Contro for Position Contro of Servo Motor J.Priya 1 R.Rambrintha

More information

RED LION CONTROLS MODEL IFMA - DIN-RAIL FREQUENCY TO ANALOG CONVERTER

RED LION CONTROLS MODEL IFMA - DIN-RAIL FREQUENCY TO ANALOG CONVERTER RED LION CONTROLS INTERNATIONAL HEADQUARTERS EUROPEAN HEADQUARTERS 20 Wiow Springs Circe, York, Pa. 17402, (717) 767-6511 FAX: (717) 764-0839 892 Pymouth Road, Sough, Berkshire SL1 4LP Web site- http://www.redion-contros.com

More information

CTC CT TRANSMITTER. (clamp-on current sensor) BEFORE USE... POINTS OF CAUTION INSTRUCTION MANUAL MODEL CTC

CTC CT TRANSMITTER. (clamp-on current sensor) BEFORE USE... POINTS OF CAUTION INSTRUCTION MANUAL MODEL CTC INSTRUCTION MANUA CT TRANSMITTER (camp-on current sensor) MODE CTC CTC BEFORE USE... Than you for choosing M-System. Before use, chec the contents of the pacage you received as outined beow. If you have

More information

CAPACITY OF UNDERWATER WIRELESS COMMUNICATION CHANNEL WITH DIFFERENT ACOUSTIC PROPAGATION LOSS MODELS

CAPACITY OF UNDERWATER WIRELESS COMMUNICATION CHANNEL WITH DIFFERENT ACOUSTIC PROPAGATION LOSS MODELS CAPACITY OF UNDERWATER WIRELESS COMMUNICATION CHANNEL WITH DIFFERENT ACOUSTIC PROPAGATION LOSS MODELS Susan Joshy and A.V. Babu, Department of Eectronics & Communication Engineering, Nationa Institute

More information

Comparison of One- and Two-Way Slab Minimum Thickness Provisions in Building Codes and Standards

Comparison of One- and Two-Way Slab Minimum Thickness Provisions in Building Codes and Standards ACI STRUCTURAL JOURNAL Tite no. 107-S15 TECHNICAL PAPER Comparison of One- and Two-Way Sab Minimum Thickness Provisions in Buiding Codes and Standards by Young Hak Lee and Andrew Scanon Minimum thickness

More information

)454 * $%&).)4)/.3 &/2 ).4%2.!4)/.!, 3/5.$ 02/'2!--% #)2#5)43 4%,%6)3)/.!.$ 3/5.$ 42!.3-)33)/. )454 Recommendation *

)454 * $%&).)4)/.3 &/2 ).4%2.!4)/.!, 3/5.$ 02/'2!--% #)2#5)43 4%,%6)3)/.!.$ 3/5.$ 42!.3-)33)/. )454 Recommendation * INTERNATIONAL TELECOMMUNICATION UNION )454 * TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU 4%,%6)3)/.!.$ 3/5.$ 42!.3-)33)/. $%&).)4)/.3 &/2 ).4%2.!4)/.!, 3/5.$ 02/'2!--% #)2#5)43 )454 Recommendation

More information

) ,4)&2%15%.#9 053("544/. 3)'.!, 2%#%04)/. '%.%2!, 2%#/--%.$!4)/.3 /. 4%,%0(/.% 37)4#().'!.$ 3)'.!,,).'

) ,4)&2%15%.#9 053(544/. 3)'.!, 2%#%04)/. '%.%2!, 2%#/--%.$!4)/.3 /. 4%,%0(/.% 37)4#().'!.$ 3)'.!,,).' INTERNATIONAL TELECOMMUNICATION UNION )454 1 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU '%.%2!, 2%#/--%.$!4)/.3 /. 4%,%0(/.% 37)4#().'!.$ 3)'.!,,).' ).4%2.!4)/.!,!54/-!4)#!.$ 3%-)!54/-!4)# 7/2+).'

More information

Rateless Codes for the Gaussian Multiple Access Channel

Rateless Codes for the Gaussian Multiple Access Channel Rateess Codes for the Gaussian Mutipe Access Channe Urs Niesen Emai: uniesen@mitedu Uri Erez Dept EE, Te Aviv University Te Aviv, Israe Emai: uri@engtauaci Devavrat Shah Emai: devavrat@mitedu Gregory W

More information

NX5 SERIES. Compact Multi-voltage Photoelectric Sensor Power Supply Built-in. Multi-voltage photoelectric sensor usable worldwide.

NX5 SERIES. Compact Multi-voltage Photoelectric Sensor Power Supply Built-in. Multi-voltage photoelectric sensor usable worldwide. 7 Compact Muti-votage Photoeectric SERIES Reated Information Genera terms and conditions... F-17 Gossary of terms / Genera precautions...p.139~ / P.1 seection guide... P.23~ China s CCC mark... P.19 PHOTO

More information

ES 442 Homework #8 Solutions (Spring 2017 Due May 1, 2017 ) Print out homework and do work on the printed pages.

ES 442 Homework #8 Solutions (Spring 2017 Due May 1, 2017 ) Print out homework and do work on the printed pages. NAME Soutions ES 44 Homework #8 Soutions (Spring 017 Due May 1, 017 ) Print out homework and do work on the printed pages. Textbook: B. P. athi & Zhi Ding, Modern Digita and Anaog Communication Systems,

More information

Log Periodic Dipole Array Antenna

Log Periodic Dipole Array Antenna Features MHz to 1 GHz frequency range Antennas Moderate gain for maximum iumination area Low VSWR of ess than 2:1 minimizes mismatch osses between ampifier and antenna 2 kw continuous RF input power (Maximum)

More information

Rectangular-shaped Inductive Proximity Sensor. website

Rectangular-shaped Inductive Proximity Sensor. website 785 Rectanguar-shaped Inductive Proximity Sensor SERIES Reated Information Genera terms and conditions... F-3 Gossary of terms... P.157~ guide... P.781~ Genera precautions... P.1579~ PHOTO PHOTO IGHT FOW

More information

Rectangular-shaped Inductive Proximity Sensor.

Rectangular-shaped Inductive Proximity Sensor. 71 PHOTOEECTRIC PHOTOEECTRIC IGHT FOW PARTICUAR USE SIMPE MEASUREMENT STATIC CONTRO Rectanguar-shaped Inductive Proximity Sensor SERIES Reated Information Genera terms and conditions... F-17 Gossary of

More information

Rectangular-shaped Inductive Proximity Sensor GX-F/H SERIES

Rectangular-shaped Inductive Proximity Sensor GX-F/H SERIES 87 PHOTO PHOTO IGHT FOW PARTICUAR Rectanguar-shaped Inductive Proximity Sensor SERIES Reated Information Genera terms and conditions... F-7 Gossary of terms... P.18~ Sensor seection guide... P.83~ Genera

More information

CO-ORDINATE POSITION OF SENSOR IN MASS OF CUTTING TOOL

CO-ORDINATE POSITION OF SENSOR IN MASS OF CUTTING TOOL XIV Internationa PhD Worshop OWD 00 3 October 0 CO-ORDINATE POSITION OF SENSOR IN MASS OF CUTTING TOOL G. Tymchi I. Diorditsa S. Murahovsyy R. Tymchi Nationa Technica University of Uraine "Kiev Poytechnic

More information

LTC Linear Phase 8th Order Lowpass Filter FEATURES APPLICATIONS DESCRIPTION TYPICAL APPLICATION

LTC Linear Phase 8th Order Lowpass Filter FEATURES APPLICATIONS DESCRIPTION TYPICAL APPLICATION LTC69-7 Linear Phase 8th Order Lowpass Fiter FEATURES n 8th Order, Linear Phase Fiter in SO-8 Package n Raised Cosine Ampitude Response n 43 Attenuation at 2 f CUTOFF n Wideband Noise: 4μV RMS n Operates

More information

Characteristics of a Novel Slow-Wave Defected Ground Structure for Planar Wideband Filters

Characteristics of a Novel Slow-Wave Defected Ground Structure for Planar Wideband Filters 2011 Internationa Conference on Information and Eectronics Engineering IPCSIT vo.6 (2011) (2011) IACSIT Press, Singapore Characteristics of a Nove So-Wave Defected Ground Structure for Panar Wideband Fiters

More information

Provides exact fault location to one span

Provides exact fault location to one span TWS Mark VI Traveing wave faut ocator Provides exact faut ocation to one span Reduce down time by getting to the faut site faster Track intermittent sef cearing fauts and focus maintenance at the right

More information

Rec. ITU-R F RECOMMENDATION ITU-R F *

Rec. ITU-R F RECOMMENDATION ITU-R F * Rec. ITU-R F.162-3 1 RECOMMENDATION ITU-R F.162-3 * Rec. ITU-R F.162-3 USE OF DIRECTIONAL TRANSMITTING ANTENNAS IN THE FIXED SERVICE OPERATING IN BANDS BELOW ABOUT 30 MHz (Question 150/9) (1953-1956-1966-1970-1992)

More information

RECOMMENDATION ITU-R BS * Ionospheric cross-modulation in the LF and MF broadcasting bands

RECOMMENDATION ITU-R BS * Ionospheric cross-modulation in the LF and MF broadcasting bands Rec. ITU-R BS.498-2 1 RECOMMENDATION ITU-R BS.498-2 * Ionospheric cross-modulation in the LF and MF broadcasting bands (1974-1978-1990) The ITU Radiocommunication Assembly, considering that excessive radiation

More information

ADAPTIVE ITERATION SCHEME OF TURBO CODE USING HYSTERESIS CONTROL

ADAPTIVE ITERATION SCHEME OF TURBO CODE USING HYSTERESIS CONTROL ADATIV ITRATION SCHM OF TURBO COD USING HYSTRSIS CONTROL Chih-Hao WU, Kenichi ITO, Yung-Liang HUANG, Takuro SATO Received October 9, 4 Turbo code, because of its remarkabe coding performance, wi be popuar

More information

Yongxiang Zhao Brookhaven National Laboratory Upton, NY, July 1998 CENTER FOR ACCELERATOR PHYSICS

Yongxiang Zhao Brookhaven National Laboratory Upton, NY, July 1998 CENTER FOR ACCELERATOR PHYSICS BNL CAP CCII, 65685 225-MUON-98C A NEW STRUCTURE OF LINEAR COLLIDER * Yongxiang Zhao Brookhaven Nationa Laboratory Upton, NY, 11973 RECEIVED AIK 1 7 1998 OSTI *This work was supported by the US Department

More information

Slim-line Aluminium Roofs Assembly Guide

Slim-line Aluminium Roofs Assembly Guide Sim-ine Auminium Roofs Assemby Guide Contents Bonded fush gazed roofs Page 3 Singe section of gass Page 4 Singe square with opener Page 5 Mutipe gass panes Page 6 Instaing Openers Page 10 Timber Kerb For

More information

Rec. ITU-R P RECOMMENDATION ITU-R P PROPAGATION BY DIFFRACTION. (Question ITU-R 202/3)

Rec. ITU-R P RECOMMENDATION ITU-R P PROPAGATION BY DIFFRACTION. (Question ITU-R 202/3) Rec. ITU-R P.- 1 RECOMMENDATION ITU-R P.- PROPAGATION BY DIFFRACTION (Question ITU-R 0/) Rec. ITU-R P.- (1-1-1-1-1-1-1) The ITU Radiocommunication Assembly, considering a) that there is a need to provide

More information

DESIGN OF A DIPOLE ANTENNA USING COMPUTER SIMULATION

DESIGN OF A DIPOLE ANTENNA USING COMPUTER SIMULATION Undergraduate Research Opportunity Project (UROP ) DESIGN OF A DIPOLE ANTENNA USING COMPUTER SIMULATION Student: Nguyen, Tran Thanh Binh Schoo of Eectrica & Eectronic Engineering Nayang Technoogica University

More information

MODEL: M5CTC SEN TRONIC AG

MODEL: M5CTC SEN TRONIC AG MODE: M5CTC Super-mini Termina Boc Signa Conditioners M5-UNIT CT TRANSMITTER (camp-on current sensor) Functions & Features Converts an aternating current into a standard process signa Easy-to-insta camp-on

More information

User's Manual. VHF Wireless Microphone System. Guangdong Takstar Electronic Co., Ltd.

User's Manual. VHF Wireless Microphone System. Guangdong Takstar Electronic Co., Ltd. User's Manua VHF Wireess Microphone System Guangdong Takstar Eectronic Co, Ltd Business Centre of Domestic Saes: Te: 020-86381808 / 86381888 Fax: 020-86599478 Production Base: Bocady Industria Viage, Longqiao

More information

LBI Mobile Communications. EDACS TM Jessica. PBX Gateway. Operator s Manual

LBI Mobile Communications. EDACS TM Jessica. PBX Gateway. Operator s Manual Mobie Communications EDACS TM Jessica PBX Gateway Operator s Manua TABLE OF CONTENTS 1. SCOPE... 3 2. QUICK USAGE GUIDE... 4 2.1. Making Phone Cas From An EDACS Radio... 4 2.2. Caing EDACS Radios From

More information

Secure Physical Layer Key Generation Schemes: Performance and Information Theoretic Limits

Secure Physical Layer Key Generation Schemes: Performance and Information Theoretic Limits Secure Physica Layer Key Generation Schemes: Performance and Information Theoretic Limits Jon Waace Schoo of Engineering and Science Jacobs University Bremen, Campus Ring, 879 Bremen, Germany Phone: +9

More information

Fox-1E (RadFxSat-2) Telemetry and Whole Orbit Data Simulation. Burns Fisher, W2BFJ Carl Wick, N3MIM

Fox-1E (RadFxSat-2) Telemetry and Whole Orbit Data Simulation. Burns Fisher, W2BFJ Carl Wick, N3MIM Fox-1E (RadFxSat-2) Teemetry and Whoe Orbit Data Simuation Burns Fisher, W2BFJ Car Wick, N3MIM 1 Review: Fox-1 DUV Teemetry Fox-1A through Fox-1D are FM Repeater Sateites» Ony a singe downink frequency»

More information

KW8M. Toward energy savings. Visualization. Makes us more ecological! Eco-POWER METER 1A/5A CT Input type

KW8M. Toward energy savings. Visualization. Makes us more ecological! Eco-POWER METER 1A/5A CT Input type WM co-powr MTR A/A CT Input type Visuaization Toward energy savings Maes us more ecoogica! Direct input of secondary side A/A CT Direct input from secondary side A/A type domestic and overseas CTs. Dedicated

More information

SINGLE-WIRE ELECTRIC POWER SYSTEM FOR RENEWABLE-BASED ELECTRIC GRID

SINGLE-WIRE ELECTRIC POWER SYSTEM FOR RENEWABLE-BASED ELECTRIC GRID SINGLE-WIRE ELECTRIC POWER SYSTEM FOR RENEWABLE-BASED ELECTRIC GRID Dmitry S. Strebkov, Stanisav V. Avramenko, Aeksei I. Nekrasov The A-Russian Research Institute for Eectrification of Agricuture 2, 1-Veshnjakovsky

More information

Method of Build. Kameo 75. Love the space you re in.

Method of Build. Kameo 75. Love the space you re in. Kameo 75 - a 75mm radius edge trim system in a stee stud and pasterboard construction with pre-assembed window frames Kameo 75 Method of Buid Love the space you re in. Kameo-75 - partitioning system Method

More information

Ga 1-x. Study of PV characteristics of Al x. As/GaAs photodiodes. Journal of Physics: Conference Series PAPER OPEN ACCESS

Ga 1-x. Study of PV characteristics of Al x. As/GaAs photodiodes. Journal of Physics: Conference Series PAPER OPEN ACCESS Journa of Physics: Conference Series PAPER OPEN ACCESS Study of PV characteristics of A x Ga -x As/GaAs photodiodes To cite this artice: V S Kainovskiy et a 08 J. Phys.: Conf. Ser. 99 009 View the artice

More information

A Distributed Utility Max-Min Flow Control Algorithm

A Distributed Utility Max-Min Flow Control Algorithm A Distributed tiity Max-Min Fow Contro Agorithm Hyang-Won Lee and Song Chong Department of Eectrica Engineering and Computer Science Korea Advanced Institute of Science and Technoogy (KAIST) mshw@netsys.kaist.ac.kr,

More information

Optimum Fault Current Limiter Placement

Optimum Fault Current Limiter Placement Optimum aut urrent Limiter acement Jen-Hao Teng han-an Lu Abstract: Due to the difficuty in power network reinforcement and the interconnection of more distributed generations, faut current eve has become

More information

VALLIAMMAI ENGINEERING COLLEGE SRM Nagar, Kattankulathur-603 203 DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING EC6503 TRANSMISSION LINES AND WAVEGUIDES YEAR / SEMESTER: III / V ACADEMIC YEAR:

More information

Racks and Cable Management Products

Racks and Cable Management Products Racks and Cabe Management Products 79 Wire Management Brackets HeermannTyton provides the most adaptabe and systematic approach for cabe management on reay racks. Offering a compete ine of versatie products,

More information

Inductors. An inductor, is an electrical component which resists changes in electric current passing through it.

Inductors. An inductor, is an electrical component which resists changes in electric current passing through it. Inductors An inductor, is an eectrica component which resists changes in eectric current passing through it. It consists of a conductor such as a wire, usuay wound into a coi. When a current fows through

More information

P H O T O CD I N F O R M A T I O N B U L L E T I N

P H O T O CD I N F O R M A T I O N B U L L E T I N PCD 077 Juy, 1994 Copyright, Eastman Kodak Company, 1994 P H O T O CD I N F O R M A T I O N B U L L E T I N Fuy Utiizing Photo CD Images Maintaining Coor Consistency When Creating KODAK Photo CD Portfoio

More information

Annex 5. Determination of the interference field strength in the Land Mobile Service

Annex 5. Determination of the interference field strength in the Land Mobile Service Annex 5 Determination of the interference field strength in the Land Mobile Service Annex 5, page 2 of 18 1 General 1.1 This calculation method is based on Recommendation ITU-R P.1546, taking into account

More information

2. Modified "Stevenson" Theory

2. Modified Stevenson Theory RADIO SCIENCE Vo. (New Series), No., January 966 Sots in Dieectricay Loaded Waveguide! R. W. Larson and V. M. Powers Radiation Laboratory, University of Michigan, Ann Arbor, Mich. (Received March, 965;

More information

Propagation curves and conditions of validity (homogeneous paths)

Propagation curves and conditions of validity (homogeneous paths) Rec. ITU-R P.368-7 1 RECOMMENDATION ITU-R P.368-7 * GROUND-WAVE PROPAGATION CURVES FOR FREQUENCIES BETWEEN 10 khz AND 30 MHz (1951-1959-1963-1970-1974-1978-1982-1986-1990-1992) Rec. 368-7 The ITU Radiocommunication

More information

Electronic Communications Committee (ECC) within the European Conference of Postal and Telecommunications Administrations (CEPT)

Electronic Communications Committee (ECC) within the European Conference of Postal and Telecommunications Administrations (CEPT) Electronic Communications Committee (ECC) within the European Conference of Postal and Telecommunications Administrations (CEPT) THE POSSIBILITIES AND CONSEQUENCES OF CONVERTING GE06 DVB-T ALLOTMENTS/ASSIGNMENTS

More information

LTC kHz Continuous Time, Linear Phase Lowpass Filter FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION

LTC kHz Continuous Time, Linear Phase Lowpass Filter FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION FEATURES DESCRIPTION n th Order, 0kHz Linear Phase Fiter in an SO- n Differentia Inputs and Outputs n Operates on a Singe or a ± Suppy n Low Offset: m Typica n db THD and SNR n db SNR n Shutdown Mode n

More information

Series 700A Power Processor

Series 700A Power Processor Series 700A Power Processor 5 25 SINGLE PHASE 10 500 THREE PHASE VOLTAGE REGULATION, ISOLATION, AND POWER DISTRIBUTION FOR CLEAN, SPIKE-FREE, STABLE VOLTAGE When Power Quaity Is A Must And Faiure Is Not

More information

Evaluation of Telecommunications Electromagnetic Compatibility with the Use of Three-Dimensional Modeling Technology

Evaluation of Telecommunications Electromagnetic Compatibility with the Use of Three-Dimensional Modeling Technology Modern Appied Science; Vo. 10, No. 10; 2016 ISSN 1913-1844 E-ISSN 1913-1852 Pubished by Canadian Center of Science and Education Evauation of Teecommunications Eectromagnetic Compatibiity with the Use

More information

Georgia Institute of Technology. simulating the performance of a 32-bit interconnect bus. referenced to non-ideal planes. A transient simulation

Georgia Institute of Technology. simulating the performance of a 32-bit interconnect bus. referenced to non-ideal planes. A transient simulation Power ntegrity/signa ntegrity Co-Simuation for Fast Design Cosure Krishna Srinivasan1, Rohan Mandrekar2, Ege Engin3 and Madhavan Swaminathan4 Georgia nstitute of Technoogy 85 5th St NW, Atanta GA 30308

More information

Page Transducer Survey... 4 General description and technical data... 8 Transducers DU for AC voltage Transducers DI for AC current...

Page Transducer Survey... 4 General description and technical data... 8 Transducers DU for AC voltage Transducers DI for AC current... Transducers Contents Page Transducer Survey........................................... 4 Genera description and technica data.......................... 8 Transducers DU for AC votage...............................

More information

UNIVERSITY OF CALIFORNIA College of Engineering Department of Electrical Engineering and Computer Sciences. EE143 Final Exam

UNIVERSITY OF CALIFORNIA College of Engineering Department of Electrical Engineering and Computer Sciences. EE143 Final Exam UNIVERSITY OF CALIFORNIA Coege of Engineering Department of Eectrica Engineering and Computer Sciences Spring 2006 EE143 Fina Exam Famiy Name First name SID Signature Sampe Soutions Instructions: DO ALL

More information

EM330 Installation and use instructions Three-phase energy analyzer for indirect connection (5A) with Modbus, pulse or M-Bus interface

EM330 Installation and use instructions Three-phase energy analyzer for indirect connection (5A) with Modbus, pulse or M-Bus interface EM330 Instaation and use instructions Three-phase energy anayzer for indirect connection (5A) with Modbus, puse or M-Bus interface Code 8021422 Genera warnings HAZARD: Live parts. Heart attack, burns and

More information

ISOSCAN EDS440/441. Device variants. Alarm messages are directly indicated on the device display

ISOSCAN EDS440/441. Device variants. Alarm messages are directly indicated on the device display EDS/ Insuation faut ocators for ocaisation of insuation fauts in unearthed DC, AC and three-phase power suppy systems (IT systems) EDS-_D D_XXEN/. EDS/ Insuation faut ocators for ocaisation of insuation

More information

BVRIT HYDERABAD College of Engineering for Women Department of Electronics and Communication Engineering

BVRIT HYDERABAD College of Engineering for Women Department of Electronics and Communication Engineering Subject Name: BVRIT HYDERABAD Coege of Engineering for Women Department of Eectronics and Communication Engineering Prepared by (Facuty Name): Hand Out Eectronic Circuit Anaysis Mr. G. Siva SankarVarma,

More information

EC6503 Transmission Lines and WaveguidesV Semester Question Bank

EC6503 Transmission Lines and WaveguidesV Semester Question Bank UNIT I TRANSMISSION LINE THEORY A line of cascaded T sections & Transmission lines General Solution, Physicasignificance of the equations 1. Derive the two useful forms of equations for voltage and current

More information

Wireless Communications

Wireless Communications Wireess Communications Ceuar Concept Hamid Bahrami Reference: Rappaport Chap3 Eectrica & Computer Engineering Statements of Probems Soving the probem of Spectra congestion System Capacity A system-eve

More information

RECOMMENDATION ITU-R P Prediction of sky-wave field strength at frequencies between about 150 and khz

RECOMMENDATION ITU-R P Prediction of sky-wave field strength at frequencies between about 150 and khz Rec. ITU-R P.1147-2 1 RECOMMENDATION ITU-R P.1147-2 Prediction of sky-wave field strength at frequencies between about 150 and 1 700 khz (Question ITU-R 225/3) (1995-1999-2003) The ITU Radiocommunication

More information

Project: IEEE P Working Group for Wireless Personal Area Networks N

Project: IEEE P Working Group for Wireless Personal Area Networks N Project: IEEE P802.15 Working Group for Wireess Persona Area Networks N (WPANs( WPANs) Tite: [MATLAB Simuation Program for TSV-channe mode] Date Submitted: [September 18, 2006] Source: [Hiroshi Harada,

More information

Availability Analysis for Elastic Optical Networks with Multi-path Virtual Concatenation Technique

Availability Analysis for Elastic Optical Networks with Multi-path Virtual Concatenation Technique Progress In Eectromagnetics Research Symposium Proceedings, Guangzhou, China, Aug. 25 28, 2014 849 Avaiabiity Anaysis for Eastic Optica Networks with Muti-path Virtua Concatenation Technique Xiaoing Wang

More information

) #(2/./53 $!4! 42!.3-)33)/.!4! $!4! 3)'.!,,).' 2!4% ()'(%2 4(!. KBITS 53).' K(Z '2/50 "!.$ #)2#5)43

) #(2/./53 $!4! 42!.3-)33)/.!4! $!4! 3)'.!,,).' 2!4% ()'(%2 4(!. KBITS 53).' K(Z '2/50 !.$ #)2#5)43 INTERNATIONAL TELECOMMUNICATION UNION )454 6 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU $!4! #/--5.)#!4)/. /6%2 4(% 4%,%(/.%.%47/2+ 39.#(2/./53 $!4! 42!.3-)33)/.!4! $!4! 3)'.!,,).' 2!4% ()'(%2 4(!.

More information

Equivalent length design equations for right-angled microstrip bends Visser, H.J.

Equivalent length design equations for right-angled microstrip bends Visser, H.J. Equivaent ength design equations for right-anged microstrip ends Visser, H.J. Puished in: The Second European Conference on Antennas and Propagation,. EuCAP. - Novemer, Edinurgh, UK Puished: // Document

More information

A2000 Multifunctional Power Meter

A2000 Multifunctional Power Meter A2 3-348-98-3 16/2.8 Measurement of current, votage, active, reactive and apparent power, power factor, active and reactive energy, harmonic distortion and harmonics Precision measured vaues with error

More information

A Low Complexity VCS Method for PAPR Reduction in Multicarrier Code Division Multiple Access

A Low Complexity VCS Method for PAPR Reduction in Multicarrier Code Division Multiple Access 0 JOURNAL OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA, VOL. 5, NO., JUNE 007 A Low Compexity VCS Method for PAPR Reduction in Muticarrier Code Division Mutipe Access Si-Si Liu, Yue iao, Qing-Song Wen,

More information

Pulse Transmission and Cable Properties ================================

Pulse Transmission and Cable Properties ================================ PHYS 4211 Fall 2005 Last edit: October 2, 2006 T.E. Coan Pulse Transmission and Cable Properties ================================ GOAL To understand how voltage and current pulses are transmitted along

More information

Rec. ITU-R SM RECOMMENDATION ITU-R SM SPECTRA AND BANDWIDTH OF EMISSIONS. (Question ITU-R 76/1)

Rec. ITU-R SM RECOMMENDATION ITU-R SM SPECTRA AND BANDWIDTH OF EMISSIONS. (Question ITU-R 76/1) Rec. ITU-R SM.38-1 1 RECOMMENDATION ITU-R SM.38-1 SPECTRA AND BANDWIDTH OF EMISSIONS (Question ITU-R 76/1) (1948-1951-1953-1956-1959-1963-1966-197-1974-1978-198-1986-199-1994-1999) Rec. ITU-R SM.38-1 The

More information

)454 * -%!352%-%.4 /& 7%)'(4%$./)3% ). 3/5.$ 02/'2!--% #)2#5)43 4%,%6)3)/.!.$ 3/5.$ 42!.3-)33)/. )454 Recommendation *

)454 * -%!352%-%.4 /& 7%)'(4%$./)3% ). 3/5.$ 02/'2!--% #)2#5)43 4%,%6)3)/.!.$ 3/5.$ 42!.3-)33)/. )454 Recommendation * INTERNATIONAL TELECOMMUNICATION UNION )454 * TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU 4%,%6)3)/.!.$ 3/5.$ 42!.3-)33)/. -%!352%-%.4 /& 7%)'(4%$./)3% ). 3/5.$ 02/'2!--% #)2#5)43 )454 Recommendation

More information

Handheld Cable & Antenna Analyzer R&S ZVH Product Introduction Matthias Roski application engineer

Handheld Cable & Antenna Analyzer R&S ZVH Product Introduction Matthias Roski application engineer Handhed Cabe & Antenna Anayzer R&S ZVH Product Introduction Matthias Roski appication engineer Handhed Cabe & Antenna Anayzer R&S ZVH Appication Area Antenna and Cabe Instaation of Transmitter Stations

More information

Automatic socket guard prevents incorrect connection of the measuring wires and protects both user and device.

Automatic socket guard prevents incorrect connection of the measuring wires and protects both user and device. Digita Mutimeter + Signa Generator UNIGOR 330, 355 Precision mutimeter (V, A, db, W, F, Hz, C/ F) Resoution 10µV-10nA-10mW-1pF-0,1 C-0,01Hz Quartz cock for rea-time recording Signa generator Standard caibration

More information

Homework Assignment # 9 (Due April 6, 8am)

Homework Assignment # 9 (Due April 6, 8am) EE143 Homework Assignment # 9 (Due Apri 6, 8am) S2006 Week of 3/27 is Spring Recess Midterm Exam #2 wi be on Apri 5 (Wed) 6:00-7:30pm, GPB Room 100, cosed book exam, 8 sheets of handwritten notes aowed.

More information

Configuring RolandVersaWorks to print on your HEXIS media

Configuring RolandVersaWorks to print on your HEXIS media PRINTING DIVISION Product Buetin N 4 Configuring RoandVersaWorks to print on your HEXIS media 1. Instaing a media profie suitabe for your HEXIS printing media 1.1. Downoading the media profie 2 1.2. Importing

More information

GT3D Digital Timers. 100 to 240V AC (50/60Hz), 24V AC (50/60Hz)/24V DC

GT3D Digital Timers. 100 to 240V AC (50/60Hz), 24V AC (50/60Hz)/24V DC rs G3D Series G3D rs Key features of the G3D series incude: Precise time setting using digita thumbwhee switches Eapsed or time remaining LCD dispay 6 time ranges, 16 timing functions deays up to 99.9

More information

Development of a LabVIEW-based test facility for standalone PV systems

Development of a LabVIEW-based test facility for standalone PV systems Deveopment of a LabVIEW-based test faciity for standaone PV systems Aex See Kok Bin, Shen Weixiang, Ong Kok Seng, Saravanan Ramanathan and Low I-Wern Monash University Maaysia, Schoo of Engineering No.2,

More information

Spatial Characteristics of 3D MIMO Wideband Channel in Indoor Hotspot Scenario at 3.5 GHz

Spatial Characteristics of 3D MIMO Wideband Channel in Indoor Hotspot Scenario at 3.5 GHz Spatia Characteristics of 3D MIMO Wideband Channe in Indoor Hotspot Scenario at 3.5 GHz ei Tian Jianhua Zhang Yuxiang Zhang State Key ab. of Networking and Switching Tech. Beijing Univ. of osts and Teecom.

More information

)454 / 03/0(/-%4%2 &/2 53% /. 4%,%0(/.%490% #)2#5)43 30%#)&)#!4)/.3 &/2 -%!352).' %15)0-%.4 %15)0-%.4 &/2 4(% -%!352%-%.4 /&!.!,/'5% 0!2!

)454 / 03/0(/-%4%2 &/2 53% /. 4%,%0(/.%490% #)2#5)43 30%#)&)#!4)/.3 &/2 -%!352).' %15)0-%.4 %15)0-%.4 &/2 4(% -%!352%-%.4 /&!.!,/'5% 0!2! INTERNATIONAL TELECOMMUNICATION UNION )454 / TELECOMMUNICATION (10/94) STANDARDIZATION SECTOR OF ITU 30%#)&)#!4)/.3 &/2 -%!352).' %15)0-%.4 %15)0-%.4 &/2 4(% -%!352%-%.4 /&!.!,/'5% 0!2!-%4%23 03/0(/-%4%2

More information

Series. Quite simply, the best in insulation! C.A 6521 C.A 6523 C.A 6525 C.A 6531 C.A Megohmmeters

Series. Quite simply, the best in insulation! C.A 6521 C.A 6523 C.A 6525 C.A 6531 C.A Megohmmeters Quite simpy, the best in insuation! Series C.A 6521 C.A 6523 C.A 6525 C.A 6531 C.A 6533 Megohmmeters Twin digita-anaogue dispay Giant back-it screen Battery powered for hours Programmabe threshod aarms

More information

COMPARATIVE ANALYSIS OF ULTRA WIDEBAND (UWB) IEEE A CHANNEL MODELS FOR nlos PROPAGATION ENVIRONMENTS

COMPARATIVE ANALYSIS OF ULTRA WIDEBAND (UWB) IEEE A CHANNEL MODELS FOR nlos PROPAGATION ENVIRONMENTS COMPARATIVE ANALYSIS OF ULTRA WIDEBAND (UWB) IEEE80.15.3A CHANNEL MODELS FOR nlos PROPAGATION ENVIRONMENTS Ms. Jina H. She PG Student C.C.E.T, Wadhwan, Gujarat, Jina_hshet@yahoo.com Dr. K. H. Wandra Director

More information

ISOSCAN EDS440/441. Device variants. Alarm messages are directly indicated on the device display

ISOSCAN EDS440/441. Device variants. Alarm messages are directly indicated on the device display EDS/ Insuation faut ocators for ocaisation of insuation fauts in unearthed DC, AC and three-phase power suppy systems (IT systems) EDSxx_D D_XXEN/. EDS/ Insuation faut ocators for ocaisation of insuation

More information

Model of Neuro-Fuzzy Prediction of Confirmation Timeout in a Mobile Ad Hoc Network

Model of Neuro-Fuzzy Prediction of Confirmation Timeout in a Mobile Ad Hoc Network Mode of Neuro-Fuzzy Prediction of Confirmation Timeout in a Mobie Ad Hoc Network Igor Konstantinov, Kostiantyn Poshchykov, Sergej Lazarev, and Oha Poshchykova Begorod State University, Pobeda Street 85,

More information

Assessment of impairment caused to digital television reception by a wind turbine

Assessment of impairment caused to digital television reception by a wind turbine Recommendation ITU-R BT.1893 (05/2011) Assessment of impairment caused to digital television reception by a wind turbine BT Series Broadcasting service (television) ii Rec. ITU-R BT.1893 Foreword The role

More information

University of KwaZulu-Natal

University of KwaZulu-Natal University of KwaZulu-Natal School of Engineering Electrical, Electronic & Computer Engineering Instructions to Candidates: UNIVERSITY EXAMINATIONS DECEMBER 2016 ENEL3EM: EM THEORY Time allowed: 2 hours

More information

BVRIT HYDERABAD College of Engineering for Women Department of Electronics and Communication Engineering

BVRIT HYDERABAD College of Engineering for Women Department of Electronics and Communication Engineering BVRIT HYDERABAD Coege of Engineering for Women Department of Eectronics and Communication Engineering Hand Out Subject Name: Anaog Eectronics Prepared by (Facuty Name): Mr.M.Venkatesh, Asst.Prof, ECE Year

More information

Resource Allocation via Linear Programming for Multi-Source, Multi-Relay Wireless Networks

Resource Allocation via Linear Programming for Multi-Source, Multi-Relay Wireless Networks Resource Aocation via Linear Programming for Muti-Source, Muti-Reay Wireess Networs Nariman Farsad and Andrew W Ecford Dept of Computer Science and Engineering, Yor University 4700 Keee Street, Toronto,

More information

An Efficient Adaptive Filtering for CFA Demosaicking

An Efficient Adaptive Filtering for CFA Demosaicking Dev.. Newin et. a. / (IJCSE) Internationa Journa on Computer Science and Engineering An Efficient Adaptive Fitering for CFA Demosaicking Dev.. Newin*, Ewin Chandra Monie** * Vice Principa & Head Dept.

More information

WS2812 Intelligent control LED integrated light source

WS2812 Intelligent control LED integrated light source Features and Benefits Contro circuit and RGB chip are integrated in a package of 5050 components, form a compete contro of pixe point. Buit-in signa reshaping circuit, after wave reshaping to the next

More information

SERIES K: PROTECTION AGAINST INTERFERENCE

SERIES K: PROTECTION AGAINST INTERFERENCE International Telecommunication Union ITU-T K.49 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (12/2005) SERIES K: PROTECTION AGAINST INTERFERENCE Test requirements and performance criteria for voice

More information

AN Ω(D log(n/d)) LOWER BOUND FOR BROADCAST IN RADIO NETWORKS

AN Ω(D log(n/d)) LOWER BOUND FOR BROADCAST IN RADIO NETWORKS SIAM J. COMPUT. c 1998 Society for Industria and Appied Mathematics Vo. 27, No. 3, pp. 702 712, June 1998 008 AN Ω(D og(n/d)) LOWER BOUND FOR BROADCAST IN RADIO NETWORKS EYAL KUSHILEVITZ AND YISHAY MANSOUR

More information

A Flexible Transmission Line Model For Series-line Antennas Array Design M. Abri, N. Boukli-hacene, F. T. Bendimerad and M.

A Flexible Transmission Line Model For Series-line Antennas Array Design M. Abri, N. Boukli-hacene, F. T. Bendimerad and M. 69 VOL.5 NO. MARCH A Fexibe Transmission Line Mode For Series-ine Antennas Array Design M. Abri, N. Bouki-acene, F. T. Bendimerad and M. Bousaa Laboratoire de teecommunications, departement de teecommunications

More information

BER Performance Analysis of Cognitive Radio Physical Layer over Rayleigh fading Channel

BER Performance Analysis of Cognitive Radio Physical Layer over Rayleigh fading Channel Internationa Journa of Computer ppications (0975 8887) Voume 5 No.11, Juy 011 BER Performance naysis of Cognitive Radio Physica Layer over Rayeigh fading mandeep Kaur Virk Dr. B R mbedkar Nationa Institute

More information

Operating Instructions SINEAX AM3000 ( )

Operating Instructions SINEAX AM3000 ( ) in Bearbeitung Device handboo SIEAX AM3000 Operating Instructions SIEAX AM3000 (2018-08) Camie Bauer Metrawatt AG Aargauerstrasse 7 CH-5610 Wohen / Switzerand Phone: +41 56 618 21 11 Teefax: +41 56 618

More information