|Electronic Navigation Industries 325LA Amplifier|
Electronic Navigation Industries
|Description||BROADBAND POWER AMPLIFIER|
The ENI Model 325LA is an all solid state amplifier which has a flat frequency response from 250 kHz to 150 MHz. It provides up to 25W of linear power with low harmonic and intermodulation distortion. Gain is 50 dB nominal, with variation of less than +1.5 dB over the entire frequency range. Input and output impedance are 50Ω and the unit may be driven to full power output by most RF synthesizers, signal generators and swept signal sources. The ENI Model 325LA 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 325LA is packaged for bench mounting and is shipping with rack mounting adapters. Its integral power supply and cooling operate from a 115 or 230 VAC 50/60 Hz main supply. The Model 325LA will raise the power level of signal sources and generators without requiring tuning or bandswitching. 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.
These manuals are available for the above equipment:
|Electronic Navigation Industries -- 325LA -- Service and User Manual|
|Manual Type||Service and User Manual|
|Size||1.36 Mbytes (1423993 Bytes)|
|Quality||Scanned document, reading partly badly, partly not readable.|
|Upload date||25 January 2016|
|Downloads||58 since 25 January 2016|
Chapter 1 Introduction 3 1.1 Introduction 3 1.2 Specifications 4 1.3 Instrument Identification 4 Chapter 2 Preparation For Use 5 2.1 Initial inspection 5 2.2 Claim for Damage 5 2.3 Main Voltage Setting 6 2.4 Mains Fuse Rating 6 2.5 Rack Installation 7 2.6 Power Cable Ground Protection 7 2.7 Cooling 7 Chapter 3 Operation 9 3.1 Funtional Description 9 3.2 Control, Indicators and Connectors 10 3.3 Operating Procedure 11 3.4 Precautions 12 Chapter 4 Maintenance 13 4.1 Initial Check 13 4.2 Gain and Gain Variation 13 4.3 RF Ouput Power Test 15 4.4 RF Output Distortion Test 16 4.5 Troubleshooting 17 4.6 Maintenance 18 Chapter 5 Figures 19 Figure 1 325LA Specifications 21 Figure 2 Front and Rear View 23 Figure 3 Gain and Gain Variation Test Set-Up 25 Figure 4 RF Output Power Test Set-Up 27 Figure 5 RF Power Distortion Test 29 Figure 6 Outline Drawings and Parts List 31 A. Driver Amplifier Board (325LA-14512) 33 B. RF Voltmeter Board (325LA-14513) 37 C. Power Amplifier Board (325LA-14515) 39 D. PS/Series Regulator Board(325LA-14516) 43 E. Other Parts 45 Figure 7 Glossary of Abbreviations 47 Reference Chart Reference 1 Schematics
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