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Model:
44A
Data:
2008
Kategoria:
Grupa:
Opis:
BROADBAND RF WATT METER
Informacja
This manual provides the physical and functional description and
operating theory necessary for effective use of the Telewave
Model
44A/AP Broadband Radio Frequency (RF) Wattmeter. Its features
include:
• Displays five power ranges
• Measures 1 to 500 watts
• Does not require inserts
• Does not require band switching
• Fully operable in freezing conditions
• Provides 5 watts full scale range
• Interchangeable connectors (QC)
• Lighweight, rugged and easy to carry
• -40 dB RF sampling port (Model(44AP)
2.02 The instrument integrates two broadband directional
couplers for
measuring incident and reflected power, ranging, calibration and
display. The wide coverage and dynamic range of this instrument
eliminates any inserts or band switching. A 20 µA taut band
meter movement is used to display the measured power,
providing the
measurement accuracy necessary to tune low power portable
transmitters.
2.03 A convenient, easy to read, voltage standing wave ratio
(VSWR)
chart is provided on the rear of the instrument for determining
VSWR from the measured incident and reflected power levels.
The instrument is designed for rugged field use and is
housed in a diecast
metal case with a leather carrying strap. The measurement
circuits
in the wattmeter are driven directly by the current
developed in the
coupler, making it unnecessary to supply AC power or
batteries. A
carrying case (Model TC44) is available as an option. The
Model 44A/AP is ideally suited for mobile, marine, and
aircraft applications as well as base stations.
Typ ręczny:
Instrukcja obsługi
Strony:
21
Rozmiar:
484.44 Kbytes (496067 Bytes)
Język:
english
Rewizja:
Ręczny ID:
Data:
2008 03 01
Jakość:
Dokument elektroniczny, bez skanowania, bardzo dobrze czytelne.
Data przesłania:
2017 08 20
MD5:
ad834a27727a3d8cbc369ea59c93e943
Pobrane:
1202
Informacja
CONTENTS
SPECIFICATIONS
GENERAL DESCRIPTION
PHYSICAL DESCRIPTION
FUNCTIONAL DESCRIPTION
Schematic and Parts List
Functional Description
Accessory List
OPERATION
Unpacking and Connections
Power Measurements
VSWR Calculations
True Power at Load Calculation
Directivity and Insertion Error
MAINTENANCE
Warranty Service and Calibration
Parts Location
Calibration / Adjustment Procedure
REFERENCE
VSWR Nomograph
Low Frequency Correction Chart
Jumper Cable Cutting Chart