Fluke 203A Amplificador
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Modelo:
203A
Fecha:
1968
Categoría:
Grupo:
Descripción:
Distribution Amplifier
Información
INTRODUCTION
The Model 203A is an all solid-state, rack mounting
distribution Amplifier. The unit accepts three input
frequencies and provides 12 output signals, four signals at
each input frequency. The Model 203A is completely modular
in construction. All preamplifiers and amplifiers are
contained on Plug-In printed circuit boards. Each printed
circuit board may be easily removed and exchanged for rapid
servicing. Further, printed circuit boards bearing the same
part number are electrically and physically interchangeable.
ELECTRICAL SPECIFICATIONS
INPUT FREQUENCIES
The distribution Amplifier operates with sinewave inputs of
100 kHz, 1 MHz, and 5 MHz. Each input frequency must be
within 1% of nominal value.
INPUT LEVELS
0.5 to 5 0 volts rms for each input. A level adjustment for
each input is provided on the rear panel.
INPUT IMPEDANCE
NominaUy 50 ohms with any number of Amplifier modules connected.
OUTPUTS
There are usually four output channels at each of the three
input frequencies. However, other output configurations are
possible up to 12 outputs of one desired frequency; 100 kHz,
1 MHz or 5 MHz.
OUTPUT LEVELS
Each channel is continuously adjustable over the range of 0.
5 to 4. 0 volts rms into 50 ohms. Level controls for
individual amplifiers are accessible through the top cover.
STABILITY
Typically better than 1 x 10"H standard deviation for a one
second averaging time at 1 MHz.
BANDWIDTH
Less than 3% of input frequency for 3 db down and 15% for 30
db down.
ISOLATION
Under all conditions of system loading, isolation of the 100
kHz and 1 MHz signals from adjacent channels is 80 db below
full output. Isolation of the 5 MHz signal from adjacent
channels is at least 65 db below full output.
OUTPUT VARIATIONS
A change in load conditions on any channel from open-circuit
to short-circuit causes less than 3% change in the signal
level of any other channel.
METERING
Front panel meter and switch provides indication of
intermediate and output signal levels, and Power supply voltage.
SPURIOUS
AU non-harmonically related signals generated by the
Amplifier are 80 db below the output level of any channel.
HARMONIC DISTORTION
Harmonic distortion generated by the distribution system is
60 db below the output level of any channel.
DUTY CYCLE
The distribution Amplifier is designed for continuous
operation throughout its service life without degradation of
specified performance.
POWER REQUIREMENTS
115/230 volts ac ±10%, 50 to 400 Hz, approximately 35 watts.
A separate connector on the rear panel may be used to
connect standby dc power from 22 to 30 vdc. Internal
circuitry detects loss of primary power and automatically
cuts over to the external standby dc power.
Type manuel:
Servicio y Manual del usuario
Páginas:
63
Tamaño:
5.28 Mbytes (5537548 Bytes)
Idioma:
english
Revisión:
Manuel-ID:
313387
Fecha:
1968 09 01
Formato:
Documento Scaneds, en parte leyendo mal, no parcialmente legible.
Fecha de subida:
2018 01 20
MD5:
f79dc9bda4a31af6accdbcf8ae28336f
Descargas:
497
Información
Instruction Manual
FOREWORD
MODEL 203A DISTRIBUTION AMPLIFIER Frontispiece
TABLE OF CONTENTS 203A
SECTION I - SPECIFICATIONS
I INTRODUCTION 203A
ELECTRICAL SPECIFICATIONS
MECHANICAL SPECIFICATIONS ENVIRONMENTAL SPECIFICATIONS
SECTION II - OPERATING INSTRUCTIONS
II PREPARATION FOR USE 203A
INSTALLATION
INPUT POWER ISOLATED OUTPUTS
CONTROLS, CONNECTORS AND INDICATORS INPUT AND OUTPUT
CONNECTIONS OUTPUT LEVELS
SECTION III - INSTRUMENT MAINTENANCE
III SOLDERING TECHNIQUES 30047
INTRODUCTION 203A
THEORY OF OPERATION
DESCRIPTIVE NOMENCLATURE GENERAL MAINTENANCE Periodic
Cleaning MAINTENANCE Accessories AND TEST EQUIPMENT
Instrument Accessories Use of Test Equipment Test Equipment
Required INSTRUMENT ALIGNMENT
Power supply Adjustment When Using An External DC Supply
Output Level and Gain Tests Distortion Tests Output
Variations Meter Calibration LOCATING A FAULTY MODULE
TROUBLESHOOTING A FAULTY Amplifier OR PREAMPLIFIER
TROUBLESHOOTING THE Power supply CIRCUIT PARTS LIST
MODEL 203A WIRING DIAGRAM 203A-100