Equipment information

Fluke 203A Amplifier
Manufacturer:
Model:
203A
Date:
1968
Category:
Group:
Description:
Distribution Amplifier

Information

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.

show more

Service and User Manual
Manual Type:
Service and User Manual
Pages:
63
Size:
5.28 Mbytes (5537548 Bytes)
Language:
english
Revision:
Manual-ID:
313387
Date:
1968 09 01
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
2018 01 20
MD5:
f79dc9bda4a31af6accdbcf8ae28336f
Downloads:
497

Information

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

show more