Equipment information:

Electronic Navigation Industries 325LA Amplifier
Manufacturer:
Electronic Navigation Industries
Model: 325LA
Date: 1988
Category: Radio, Communication
Group: Amplifier
Description: BROADBAND POWER AMPLIFIER
Information:
                                    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
File name: ENI-7566-Manual-Page-1-Picture
Manual Type: Service and User Manual
Pages: 54
Size: 1.36 Mbytes (1423993 Bytes)
Language: english
Revision:
Manual-ID/Number:
Date: 1988
Quality: Scanned document, reading partly badly, partly not readable.
Upload date:
MD5: 68e1b2c4c0caa9460e5fd43b156f23d1
ed2kID: 01b87aea7cbd6336f9e011e6d8e0b718
Downloads: 15 since 25 January 2016
Information:
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
ENI-7566-Manual-Page-1-Picture
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