Equipment information:

Electronic Navigation Industries 420LA Amplifier
Manufacturer:
Electronic Navigation Industries
Model: 420LA
Date:
Category: Radio, Communication
Group: Amplifier
Description: BROADBAND POWER AMPLIFIER
Information:
                                    The Model 420LA is a general purpose broadband amplifier
capable of more than 20 watts of linear power output when
driven by any laboratory signal or sweep generator from .15
to 300 MHz.
An ultra linear Class A design, the 42ÖLA will “boost" the
output of any signal source by a fiat 45 dB (± 1.5 dB) and
provide its full forward output power into any load
impedance (from an open to a short circuit), its output is a
faithful reproduction of the input waveform for AM, FM.
SSB, CATV, pulse and other complex modulations. Although
specified only over the .15 to 300 MHz frequency range, full
power output is typically available from .12 to 310 MHz.
The microwave transistors on thin film substrates,
microstrip circuitry, and plug-in modules make the 420LA
both reliable and easy to service. An integral power supply
and coohng system permit operation over a wide range of
temperature and AC line conditions.

These manuals are available for the above equipment:

Electronic Navigation Industries -- 420LA -- Service and User Manual
File name: ENI-7555-Manual-Page-1-Picture
Manual Type: Service and User Manual
Pages: 23
Size: 962.95 Kbytes (986059 Bytes)
Language: english
Revision:
Manual-ID/Number:
Date:
Quality: Scanned document, reading partly badly, partly not readable.
Upload date:
MD5: 775a5f5609d2469ddb3c4bc2e72b09e2
ed2kID: 9aede6c99bc60b0586f8996c56f6ef1c
Downloads: 18 since 25 January 2016
Information:
CHAPTER 1 GENERAL INFORMATION
l.! introduction
.............................................................................................
1
1.2 Data
Summary.....................................................................................
I
CHAPTER 2 OPERATION
2.1 Introdaction......................... .
...............................................................3
2.2 Rack Installation ...................
......................................... 3
2-2.1 Mains Voltage Setting .
,........................................................................3
2.2.2 Mains Fuse
Rating....................................................................................3
2.2.3 Mains Lead
Connection...........................................................................4
2.3
Operation........................,.......................................................................4
CHAPTER 3 TECHNICAL DESCRIPTION
3. ΐ General Description.......... ........................
. . . 5
CHAPTER 4 MAINTENANCE
H
4. i
introduction....................................................................................
6
4.2 Access and
Layout...............................................................................,6
4.3 Performance
Checks..............................................................................
7
4.3.1 Initial
Check........................................<..................................................7
4.4 Re-alignment
Procedure........................................................................8
4.4.1 Measurement of Gain
..............................................................................8
4.4.2 Measurement of Harmonics ................................9
4.5 Packaging for Reshipment .
..................................................... 10
CHAPTER 5 SCHEMATIC AND PARTS LIST
ο. 1 Schematic
Diagram..............................................................................11
5.2 Parts
List.................................................................................................11
5.3 List of
Manufacturers...........................................................................11
5.4 Ordering Replacement
Parts................................................................Π
ENI-7555-Manual-Page-1-Picture
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