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Delta Electronics OIB-3, Инструкция

Руководство по эксплуатации Delta Electronics OIB-3 доступно для загрузки бесплатно на нашем сайте. Инструкция включает в себя все необходимые руководства и сведения о продукте. Получите свой экземпляр сейчас и ознакомьтесь с функционалом устройства. Откройте мир возможностей с Delta Electronics OIB-3!

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Содержание OIB-3

Страница 1: ...RATING IMPEDANCE BRIDGE ARNI NG Dangerous radio frequency voLtages may be encountered vhen mea8uring high power 093 233 active circuits Exercise care i n grounding the instrument before applying power...

Страница 2: ...2 In Line Impedance Measurement Under Power 6 2 3 Increased Detector Sensitivitv with TUNE Cir cuit 8 2 4 Operating With External Detector 8 2 5 Improving Precis i on by Substitu tion Method 9 2 6 Me...

Страница 3: ...ont panel An internal detect or circuit is provided eo that when the bridge i s oper ating in a power circuit no other instruments are required An input adaptor and an external detector connector are...

Страница 4: ...ower level A dummy load for example may have an operating impedance which varies with applied power levels Meaningful impe dance measurements must therefore be made at nor mal power level 1 3 Differen...

Страница 5: ...OUT OPERATING IMPEDANCE BRIDGE 0 18 3 FIGURE 01B 3 OPERATING IMPEDANCE BRIDGE IN 4 www americanradiohistory com...

Страница 6: ...itches When the adder switches are in the 0 position they are inactive When the switches are in other pos itions the values indicated are added to the reading of the R dial to obtain the resistance of...

Страница 7: ...integrated circuit RF Amplifier is inserted before the detector circuit This amplifier increases the internal detector sensitivity for measurements in low power circuits Immediately to the left of th...

Страница 8: ...The R and X dials are then adjusted for a minimum reading on the meter If t he reading on the meter i s decreased when the X di al i s advanced from zero the load i s inductTve and a null can be obt...

Страница 9: ...ensitivity Additional s ensitivity can be obtained by switching the AMP IN OUT switch to the AMP IN position 2 4 Operating With External Detector At very low power levels the meter sensitivity may not...

Страница 10: ...nitude of the R dial deviation is then a good esti mate of the error caused by the leakage The Delta Electronics RG l and RG 3 receiver generator sets are specifically designed for such use There is o...

Страница 11: ...e the reactance of the cpapcitor after the null is re established will equal the inductive reactance of the load 2 6 Measuring Negative Impedances Quite often in complex antenna systems it is found th...

Страница 12: ...al of the OIB 3 is calibrated below zero to about 5 ohms This facilitates measu rement of operating resistance Yalues near zero without the reversing technique described above 11 www americanradiohist...

Страница 13: ...dard reactance The combination of these standards is identified as Z5 There will be two waves on the main transmission line one direct wave carrying energy from the gener ator to the load identified a...

Страница 14: ..._w rlow Zoo p r J Z AI Z BI Figure 2 Simplified Schematic A 13 www americanradiohistory com...

Страница 15: ...ns and solving for ZL Or ZOI Z02 Zs ZOI Z02 Y5 C 4 5 The load impedance is directly proportional to the shunt admittance of the standard circuit The constant of proportionality C is the product of the...

Страница 16: ...e res i stance standard no longer exists When ZL is zero it is only nec essary that Ys and Yb be equal Neither is re quired to be zero It is not necessary to have a variable inductor for ca pacitive l...

Страница 17: ...ted for both their RF characteristics and long term stability The variable R dial resistor Rl is a special precision low noise ceramet potentiometer The resistance adder resistor R4 and RS are high st...

Страница 18: ...ODER 600 O 0 0 300 R9 RIO R RS 25 50 82 ISO J R 500 J SW 2 J Ll _ CI SW I R ADDER 0 100 C3 5 1600 lte X ZERO f SE T C 4 5 100 C3 1 00 500 r e e CI 532 It _ X _ 01 Al FMC SW3 X A DDER 9 100 C2 100 500...

Страница 19: ...100 A 0 01 1 AI pA pF MI CP 6800 1 L 1 0pF _______D 3 1 4 _J NOTES I UNLESS OTHERWIS E SPECIFIEO A ALL RESISTORS ARE IN OHMS I FIXEDI B ALL CAPACITORS ARE IN PICOFARADS 2 INDICATES FR ONT PANEL CONTRO...

Страница 20: ...c teristic of precision potentiometers For this reason the user may notice an apparent noise when obtaining a deep null with an external detector This is normal and does not affect the rated ac curacy...

Страница 21: ...lOOf 009 00014 lO J lOaf 009 00014J lOaf 0076J 76 f eorrecting for frequency 76 68 52 True Resistance 10 52 9 48 Note that the correction is negative for capacitor loads and positive for inductor loa...

Страница 22: ...RRE CTI ON FACTOR II I I f I b t7 1 iii IT It fyi il 21 1 x I I c 0 II i t II I 1 r Ii it I I II tt k f 0 I I j iii I 1 V f t l tV 1 1 I ttt I tt lt f S HO NOI l J31H IO 21 www americanradiohistory c...

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