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Trio PF-810, Руководство по эксплуатации, Страница: 1 / 15

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Содержание PF-810

Страница 1: ...TRIO FUNCTIONPOWERMETER PF 810 OPERATING INSTRUCTIONS f...

Страница 2: ...instrument for observing and measuring forward power from transmitter to load antenna and reflection power from load to transmitter It is also capable of measuring power actually con sumed in load for...

Страница 3: ...tments of transm itter Aritenna selector switch is self contained to select either of two antennas for quick QSY If a dummy load is connected instead of antenna the instrument functions as a terminal...

Страница 4: ...gether flow into the secondary of the transformer If these two currents i4 and i5 are equal no voltage appears across Rref because the currents flowing into Rref in reverse direction each other are c...

Страница 5: ...unction selector switch The power range is selected by the range selector resistors Two sets of voltage converter and selector of the same design are provided for forward power and refrection power Th...

Страница 6: ...red on the meter At the REF refrection position refrection power from load to transmitter is measured on the meter At the RAD radiant position radiant power that is forward power minus refrection powe...

Страница 7: ...e with the function switch in the REF position Antenna selector ANT SELECTOR This 2 position pushbutton switch is used to connect the transmitter to ANT1 or ANT2 Press the button until it locks and th...

Страница 8: ...touch the antenna selector pushbutton while the transmitter is in operation Besure to turn off the power wheneverthe antenna selector isused OPERATION Connect a 50 ohm coaxial cable between the antenn...

Страница 9: ...than the actual value and vice versa Accurate SWR can be measured at 10W of forward power or by calculation after measuring forward power and refrection power as described below 2 Measurement of forw...

Страница 10: ...ower and refrection power at the same time because the power measured is decreased as the refrection increases Ac cordingly when PF 810 is used as a monitor the function switch is normally set to the...

Страница 11: ...z 0 a ID 0 ID 51 C a SlO2d All resistors are 1 4W t5 unless otherwise noted The circuit is sub ject to change without notice for improvement CIO O I F 12 SIOI S102a d S103a d coANT SELECTOR FUNCTION R...

Страница 12: ...SMITH CHART t I I 11 I I I 1I 1 11 I i I 13...

Страница 13: ...r bands with two antennas 000 000 Transmitter or transceiver Tune up of antenna and TX Transmitter or transceiver NT1 0 0 ANT 2 TX 0 PF 810 PF 810 Tune up of TX or antenna coupler Transmitter or trans...

Страница 14: ...up of TX and antenna coupler Transmitter or transceiver I i Antenna coupler ANTI _fo TXI 0 ANT2 PF 810 Observation and adjustment of sending waveforms with monitor scope Transmitter or transceiver r I...

Страница 15: ......

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