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The material contained in this document is the property of Electronics & Innovation Ltd., it is 
subject to change without notice.  
 
February 2007 

Revision B 

 

 

Table 1-1. SPECIFICATIONS 

 

FREQUENCY COVERAGE: 

10 kHz to 12 MHz. 

GAIN: 

50 dB min, ±1.5 variation. 

CLASS A LINEAR OUTPUT: 

Nominal 40 watts. 

HARMONIC DISTORTION: 

> -25 dBc at 40 watts output. 

SATURATED RF POWER OUTPUT: 

100W Min. 

from  30kHz - 4MHz; 

90W Min. 

from  10kHz - 10MHz; 

80W Min. 

from  10MHz - 12MHz. 

INPUT IMPEDANCE 

50 ohms, VSWR, 1.5:1 Maximum. 

OUTPUT IMPEDANCE: 

50 ohms, VSWR, 2.5:1 Maximum 

STs  STABILITY: 

Continuous operation into any load or 
source impedance. 

PROTECTION: 

Unit will withstand a + 13dBm input 
signal (1.0 Volts RMS) for all output load 
conditions, without damage. 

POWER OUTPUT METER: 

True RMS power detection.  ±3% of full 
scale accuracy. 

POWER REQUIREMENTS: 

85 – 264 VAC 47-63 Hz. 

SIZE: 

5 1/4 X 16.5 X 18.1inches 13.4 X 41.9 x 
46.0 cm. 

WEIGHT: 

32.5 pounds 14.7 kg 

CONNECTORS: 

BNC 

OPERATING   TEMPERATURE: 

0 – 40 C 

RACK  MOUNTING: 

 

 
 
 

Chapter 2 Operation 

 
2.1 INTRODUCTION 

 
The 240L RF amplifier is used to amplify the RF level of signal sources in the 10 
KHz to 12 MHz range. No tuning or any other form of adjustment is required.  
 
The 240L produces rated power output at its output connector, regardless of load 
impedance. Any power reflected due to output load mismatch is absorbed in the 
amplifier.  Therefore,  although  the  output  impedance  is  50  ohms  (maximum 
VSWR: 2.5:1), the amplifier will work into any load impedance. 
 
 

Summary of Contents for 240L

Page 1: ...furbished and purchasing new Financing options such as Financial Rental and Leasing are also available on application TMG will assist if you are unsure whether this model will suit your requirements C...

Page 2: ...thout notice Feb 2007 Revision B 1 240L Broadband Power Amplifier HIGH RF VOLTAGES MAY BE PRESENT AT THE OUTPUT OF THIS UNIT All operating personnel should use extreme caution in handling these voltag...

Page 3: ...operational such that it performs according to the original specifications free of charge to the original purchaser Should warranty service be required the unit must be returned to E I freight cost t...

Page 4: ...FM SSB pulse and any complex modulation signals The amplifier has 50 dB gain it is unconditionally stable and will not oscillate even with combinations of mismatched source and load impedance It is pr...

Page 5: ...tand a 13dBm input signal 1 0 Volts RMS for all output load conditions without damage POWER OUTPUT METER True RMS power detection 3 of full scale accuracy POWER REQUIREMENTS 85 264 VAC 47 63 Hz SIZE 5...

Page 6: ...rms indicated maximum input voltage is 5 times the level of the input signal required to achieve maximum output Input voltages in excess of 2 volts peak may permanently damage the instrument iii Conn...

Page 7: ...nd unrestricted If the fault persists please contact Field Service 2 3 3 RS 232 Interface The 240L features a standard RS 232 serial interface suitable for connection to a PC or host system The commun...

Page 8: ...in of Q1 is coupled to the input of Q2 This is transformed to 50 and fed to the driver output BNC port The driver output signal is fed through a length of coaxial cable to the input of the power ampli...

Page 9: ...February 2007 8 Revision B Chapter 4 Maintenance 4 1 INTRODUCTION The E I 240L RF amplifier requires no periodic maintenance The instrument is unconditionally stable and is fail safe under all load co...

Page 10: ...tor HP 8601 or similar capable of sweeping the frequency range 10 KHz to 12 MHz to the input connector c Adjust the output level of the sweep generator so that a 50 ohm video detector connected at the...

Page 11: ...then proceed as follows a Set the oscilloscope to DC Time cm to Ext X and gain to l0mv cm b Set the sweep generator to the video sweep mode with the start frequency at 10 kHz and the sweep width to 12...

Page 12: ...ater 50 dB The gain variation should be within the 3 dB as shown on the oscilloscope 4 4 2 Measurement of Harmonics Figure 4 2 1 Equipment Required a Sweep Signal Generator b Calorimetric Power Meter...

Page 13: ...prevent movement Provide additional support for projecting parts to relieve these of unnecessary shock Close the carton securely and seal with durable tape Mark the shipping container FRAGILE to ensur...

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