Electronic Navigation Industries A-300 Verstärker
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Modell:
A-300
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0
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Beschreibung:
BROADBAND POWER AMPLIFIER

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The ENI Model A300 is an all solid state Amplifier which has a flat frequency response from .3 MHz to 35 MHz. It provides 300 watts of linear power with low harmonic and intermodulation distortion. Gain is 55 dB nominal, with a variation of less than ± 1.0 dB over the entire frequency range. Input and output impedance are 50 ohms and the unit may be driven to full power output by most RF synthesizers, signal generators and swept signal sources. The ENI Model A300 will deliver its rated power output into any load impedance, regardless of match. Built-in protection circuitry will absorb the power reflected from a mismatched load without causing failure or oscillation. Output RF voltage is displayed on the front panel meter. The Model A300 is packaged for bench mounting and is shipped with rack mounting adapters. Its integral power supply and cooling operate from a 115 or 230 V ac 50/60 Hz main supply. The Model A300 will raise the power level of signal sources and generators without requiring tuning or band- switching. The Class A linear circuitry will amplify signals of AM, FM, SSB, TV and complex modulations limited only by their peak input and bandwidth, with minimum distortion.

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Service- und Bedienungsanleitung
Dokumenttyp:
Service- und Bedienungsanleitung
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31
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1.60 Mbytes (1673279 Bytes)
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english
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25 Januar 2016
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CHAPTER 1 GENERAL INFORMATION 1-1 1.1 introduction ... 1-1 1.2 Specifications ... 1-1 1.3 instrument Identification ... 1-1 CHAPTER 2 PREPARATION 2-1 2.1 Initial Inspection ... 2-1 2.1.1 Mechanical Check ... 2-1 2.1.2 Claim for Damage ... 2-1 2.1.3 Performance Check ... 2-1 2.2 Preparation for Use ... 2-1 2.2.1 Power Requirements ... . 2-1 2.2.2 Power Cable Ground Protection . 2-1 2.2.3 Cooling ... 2-2 2.3 Rack Mounting ... 2-2 2.4 Packaging for Reshipment ... 2-2 CHAPTER 3 OPERATION 3-1 3.1 Functional Description ... 3-1 3.2 Controls, Indicators and Connectors ... 3-1 3.3 Operating Procedure ... 3-1 3.4 Precautions ... 3-1 CHAPTER 4 PRINCIPLES OF OPERATION 4-1 4.1 General ... 4-1 4.2 Block Diagram Description ... 4-1 4.2.1 Driver Amplifier Module {A48A} A300-4382 ... 4-1 4.2.2 Power Amplifier Module (A40A) A300-4381 ... 4-1 4.2.3 Bias Regulator Module (A49) A300*4387 ... 4-3 4.2.6 RF Voltmeter Module (A29M) A300-4386 ... 4-3 4.2.7 Power Distribution A300-2381 ... 4-3 CHAPTER 5 PERFORMANCE TEST PROCEDURES 5-1 5.1 Performance Tests . ... 5-1 5.1.1 General ... 5-1 5.1.2 Test Equipment Required ... 5-1 5.1.3 Gain and Gain Variation Test.. . 5-1 5.1.3.1 Calibration of Set Up ... 5-1 Paragraph Page 5.1.3.2 Measurement Procedure ... 5-1 5.1.4 RF Output Power Test ... 5-2 5.1.4.1 Measurement Procedure ... 5-2 5.1.5 RF Output Distortion Test ... 5-2 5.1.5.1 Measurement Procedure ... 5-2 CHAPTER 6 TROUBLESHOOTING AND REPAIR 6-1 6.1 Troubleshooting ... 6-1 6.2 Locating Faulty RF Module ... 6-2 6.2.1 General ... . 6-2 6.2.2.1 Two-Way Output Combiner Test {A51> A300-4383 ... 6-3 6.2.2.2 Heatsink Assembly Test A300-3385 ... 6-3 6.2.2.2.1 Bias Voltage Check ... 6-3 6.2.2.2.2 RF Power Test ... 6-3 6.2.2.3 Driver Amplifier Module (A48A) A300-4382 ... 6-4 6.2.3 RF Voltmeter (A29M) A300-4386 ... 6-4 6.2.3.1 Alignment Procedure ... 6-4 6.3 DC Power Supply ... 6-4 6.3.1 General . . ... 6-4 6.3.2 Test Procedure ... 6-5 6.4 Disassembly Procedure ... 6-5 6.4.1 General ... 6-5 6.4.2 Tools Required ... 6-5 6.4.3 Removal of Cover ... 6-5 6.4.4 Driver Amplifier Heatsink Assembly A300-3386 ... 6-5 6.4.6 Power Amplifier Heatsink Assembly A300-3385 ... 6-5 6.4.7 Power Amplifier Power Supply A300-3387 ... 6-6 6.4.8 Driver Amplifier Power Supply A300-3388 ... 6-6 6.4.10 Power Amplifier Module (A40A) A300-4381 ... 6-6 6.4.11 Two-Way Output Combiner (A51) A300-4383 ... 6-6 CHAPTER 7 SCHEMATICS AND PARTS LIST 7-1 7.1 Schematic Diagrams ... 7-1 7.2 Parts List ... 7-1 7.3 List of Manufacturers ... 7-1

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