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

Feb 2007                                                                                                                                 Revision B 

 

 

Chapter   1 Introduction 

 

 
The  240L  is  a  broadband  solid  state amplifier  covering  the frequency  spectrum from  10 
KHz to 12 MHz. It is rated at 40 watts of RF power with low harmonic and intermodulation 
distortion. Over 100 watts of saturated power can be produced with increased distortion 
products.  A  highly  linear  Class  A  design,  the  240L  will  amplify  inputs  of  AM,  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  protected  against  failure  due  to  output  load  mismatch  and/or 
overdrive. 
 
RMS forward and reverse powers are monitored by a front panel meter. An integral power 
supply permits operation from 115/230 single phase AC power. 
 

1.2     INSTRUMENTATION IDENTIFICATION 

 
Each amplifier is identified by a serial number tag on the back panel of the unit. Both the 
model number and the serial number should be quoted to identify specific unit.  
 

1.3      SPECIFICATIONS 

 
Physical and electrical specifications are listed in Table 1-1 below 
 

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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