Electronic Navigation Industries 325LA Amplifier
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Model:
325LA
Date:
1988
Class:
Type:
SubType:
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.
Manual type:
Service and User Manual
Pages:
54
Size:
1.36 Mbytes (1423993 Bytes)
Language:
english
Revision:
Manual-ID:
Date:
unknown
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
2016 01 25
MD5:
68e1b2c4c0caa9460e5fd43b156f23d1
Downloads:
511
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
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