Trio PF-810 - Table of Contents; Introduction

CONTENTS
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . 3
Features.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Specifications.. . . . . . . . . . . . . . . . . . . . . . . . . 4
Principlesof operation.. . . . . . . . . . . . . . . . . . . 5
Operatingparts. . . . . . . . . . . . . . . . . . . . . . . . 7
Cautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Schematicdiagram. . . . . . . . . . . . . . . . . . . . . . 12
Smithchart. . . . . . . . . . . . . . . . . . . . . . . . . . 13
Applications.. . . . . . . . . . . . . . . . . . . . . . . . . 14
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INTRODUCTION
The Function Power Meter ModelPF-810 isa passing
type power/SWR meter coveringa wide frequency range
of 1.8MHzto 200MHz. It is a laboratory quality, profes-
sional instrument for observing and measuringforward
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 (forward power minus reflection power)
for convenience of checking the conditions of trans-
mitter and load, in addition to measuringSWRat power
greater than 1W.
Besides being used to monitor the operating condi-
tions of transmitter or to adjust filters, matching circuit,
etc., it is also used to monitor production lines and
businessuse radio stations.
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