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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 D                                                                                                                   

 

 

This  unit  is  14U  high,  16.75

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

standard rack. 
 

2.2.1 Mains Voltage 

 
The unit runs of 200-240VAC Single Phase

 

 

2.3 OPERATION 

 
A fixed line cord is supplied to form a connection between the mains supply and 
the rear of the unit. This is configured from the factory with a 30A plug. Plug this 
into the AC mains outlet.  
 

2.3.1 Proceed as follows: 

 

(i) 

Ensure that there is at least 3” or 7.5 cm clearance at the rear of the 
unit for air flow. 

 

(ii) 

Ensure RF input voltage is not excessive 
a.  The 1 V 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) 

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 2500L front panel has a passive LCD display designed for simplicity and 
ease of use.  During initialization, the LCD shows the software revision.  After the 
amplifier is initialized, the LCD indicates Forward Power, Reflected Power, and 
amplifier 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 condition, such as: 

  Overheat (heat-sink temperature is too high for reliable operation) 

  PSU fault (internal fault in the main switching power supply) 

Summary of Contents for 2500L

Page 1: ...out notice August 2012 Revision D 1 2500L 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: ...lly 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 cos...

Page 3: ...ts of AM FM SSB pulse and any complex modulation signals The amplifier has 60 dB gain it is unconditionally stable and will not oscillate even with combinations of mismatched source and load impedance...

Page 4: ...conditions without damage POWER OUTPUT METER True RMS power detection 5 of full scale accuracy POWER REQUIREMENTS 200 240VAC Single Phase 47 63 Hz SIZE 24 X 16 75 X 20 inches 330 X 425 x 508 mm WEIGHT...

Page 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 Connect the output via a 50 ohm coaxial lead a...

Page 6: ...t system The communication protocol is extremely simple to facilitate readback and control with readily available terminal programs such as Hyperterm The RS 232 link has the following parameters Baud...

Page 7: ...port The driver output signal are fed through a length of coaxial cable to the input of a power splitter the outputs of this are fed to the power amplifier modules In each PA module the signal is spli...

Page 8: ...RF IN RF OUT To Page 2 c RF Detect 2500L RF Amplifier Splitter Driver 1 24 Volt To Page 2 a To Page 2 b To Page 2 b 42 Volt 42 Volt 2100L PA 2100L PA 2100L PA Driver 1 Splitter 2100L PA 42 Volt Splitt...

Page 9: ...nd is fail safe under all load conditions Damage can 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 equivalen...

Page 10: ...tput level of the sweep generator so that a 50 ohm video detector connected at the output of the unit will not be damaged by excessive power output Reference section 4 4 1 for set up d Observe the gai...

Page 11: ...tts Bird Figure 4 1 Gain Measurement 2 Connect the equipment 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...

Page 12: ...ction Rotate the step attenuator CCW so that the output is reduced by 50 dB g Reconnect the 2500L into the test set up of Figure 4 1 h Place the 2500L power switch to the ON position i Observe the gai...

Page 13: ...in a rigid outer box of wood fiberboard or very strong corrugated cardboard Use ample soft packing to prevent movement Provide additional support for projecting parts to relieve these of unnecessary s...

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