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

August 2012                                                                                                                      Revision F 

 

Chapter   1 Introduction 

 

 
The 1020L is a broadband solid state amplifier covering the frequency spectrum from 10 
KHz to 5 MHz. It is rated at 200 watts of RF power with low harmonic and intermodulation 
distortion. Over 300 watts of  saturated power can be produced with increased distortion 
products. A quasi linear Class AB design, the 1020L will amplify inputs of AM, FM, SSB, 
pulse  and  any  complex  modulation  signals.  The  amplifier  has  53  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  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 1020L

Page 1: ...out notice August 2012 Revision F 1 1020L 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 volt...

Page 2: ...ly 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...

Page 3: ...AM FM SSB pulse and any complex modulation signals The amplifier has 53 dB gain it is unconditionally stable and will not oscillate even with combinations of mismatched source and load impedance It i...

Page 4: ...input signal 1 0 Volts RMS without damage And all load conditions at rated Power out POWER OUTPUT METER RMS power detection 3 of full scale accuracy 100 KHz 1 MHz 10 100 KHz see table below Above 1 M...

Page 5: ...h With the handles removed it will fit into a standard rack 2 2 1 Mains Voltage The unit accommodates AC line voltages from 100 TO 240 VAC 47 63 Hz 2 3 OPERATION A line cord is supplied to form a conn...

Page 6: ...r status see figure 2 1 Pf ___W Pr ___W Status ________ Figure 2 1 Front Panel Display Where Pf refers to forward power Pr refers to reverse power and Status indicates OK unless there is a fault condi...

Page 7: ...nk has the following parameters Baud rate 19200 Data bits 8 Parity none Stop bits 1 Flow control none An example configuration using HyperTerminal on a PC is shown in figure 2 2 In the default state t...

Page 8: ...e to the input of the power amplifier module The signal is split into two equal phase and amplitude signals These signals are fed to the inputs of transistors Q1 and Q2 The amplified signals appearing...

Page 9: ...Maintenance 4 1 INTRODUCTION The E I 1020L RF amplifier requires no periodic maintenance The instrument is unconditionally stable and is fail safe under all load conditions Damage can only be externa...

Page 10: ...he frequency range 10 KHz to 5 MHz to the input connector c Adjust the output level of the sweep generator so that a 50 ohm video detector connected at the output of the unit will not be damaged by ex...

Page 11: ...pment as shown in Figure 4 1 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...

Page 12: ...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 HP434A...

Page 13: ...upport for projecting parts to relieve these of unnecessary shock Close the carton securely and seal with durable tape Mark the shipping container FRAGILE to ensure careful handling Chapter 5 Safety D...

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