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The material contained in this document is the property of Electronics & Innovation Ltd., it  is 
subject to change without notice.  
 
May 2016 

Revision G 

 

Table 1-1. SPECIFICATIONS 

 

FREQUENCY COVERAGE: 

250 kHz to 150 MHz. 

GAIN: 

50 dB min, ±1.5 variation. 

CLASS A LINEAR OUTPUT: 

Nominal 100 watts. 

HARMONIC DISTORTION: 

> -25 dBc at 100 watts output. 

SATURATED RF POWER OUTPUT: 

150W Min. 

 

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).  

POWER OUTPUT METER: 

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

POWER REQUIREMENTS: 

100 

– 240 VAC 47-63 Hz. 

SIZE: 

5.3” 5.3” x 16.5” x 18.4” 
134.134.5 mm x 420 mm x 467 mm 

WEIGHT: 

52 pounds 23.6 kg 

CONNECTORS: 

OPERATING   TEMPERATURE: 

– 40 C 

RACK  MOUNTING: 

Optional Rack Mount Ears  

 
 
 

Chapter 2 Operation 

 
2.1 INTRODUCTION 

 
The 3100LA RF amplifier is used to amplify the RF level of signal sources in the 
250  KHz  to  150  MHz  range.  No  tuning  or  any  other  form  of  adjustment  is 
required.  
 
The  3100LA 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. 
 

2.2 RACK INSTALLATION 
 

This unit is 5U high, 17

” width. With the handles removed it will fit into a standard 

rack. 
 

Summary of Contents for 3100LA

Page 1: ...F VOLTAGES MAY BE PRESENT AT THE OUTPUT OF THIS UNIT All operating personnel should use extreme caution in handling these voltages and be thoroughly familiar with this manual Do not attempt to operate...

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: ...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 p...

Page 4: ...n 3 of full scale accuracy POWER REQUIREMENTS 100 240 VAC 47 63 Hz SIZE 5 3 5 3 x 16 5 x 18 4 134 134 5 mm x 420 mm x 467 mm WEIGHT 52 pounds 23 6 kg CONNECTORS N OPERATING TEMPERATURE 0 40 C RACK MOU...

Page 5: ...ii Connect the output via a 50 ohm coaxial lead and N plug to the load iv Connect the input signal via a 50 ohm coaxial lead and N plug to the input connector 2 3 2 Front Panel Display The 3100LA fron...

Page 6: ...ailable terminal programs such as Hyperterm The RS 232 link has the following parameters Baud rate 19200 Data bits 8 Parity none Stop bits 1 Flow control none An example configuration using HyperTermi...

Page 7: ...The driver output signal is fed through a length of coaxial cable to the input of the splitter network The two output signals are fed to the two power amplifiers Each amplifier has a four way splitter...

Page 8: ...an only be externally caused by the incorrect selection of the AC supply voltage or by an input signal in excess of the specified 1 volt rms equivalent to a power level of 13dBm This chapter therefore...

Page 9: ...bserve the gain versus frequency ripple on an oscilloscope calibrated in decibels The gain variation must be not more than 1 5 dB over the frequency range e Connect a calorimetric power meter HP434 or...

Page 10: ...ep generator to the video sweep mode with the start frequency at 150 kHz and the sweep width to 150 MHz c Disconnect the 3100LA from the set up and connect the sweep generator RF output directly to th...

Page 11: ...armonics Figure 4 2 1 Equipment Required a Sweep Signal Generator b Calorimetric Power Meter HP435B c Spectrum Analyzer d Attenuator 30dB e Coupler 30 dB 2 Connect the Equipment as shown in Figure 4 2...

Page 12: ...ck Close the carton securely and seal with durable tape Mark the shipping container FRAGILE to ensure careful handling Chapter 5 Safety Do not attempt to operate this unit with the cover removed High...

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