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RF Power Amplifiers 

Andrew Corporation – Power Amplifier Group  

Propriety – Use pursuant to Company Instruction 

5 of 8 

 

 

Figure 3 MSA850-135 MCPA Front Panel 

 

 

Figure 4 MSA850-135 Rear Panel 

 
The following table is a summary of detailed alarms within the PA Module.  The alarms 
are mapped to front panel LED behavior, as indicated.  Additionally, the alarms are 
mapped to the discrete line relays and available at the D-Sub connector at the rear of the 
PA Module. 

Alarm 
LED 

Warning 
LED 

Active 
LED 

Tx Enable 
Disable Switch 

RS232 Debug 
Port 

Fan Tray 
Interface 

Captive Screw 
Mounting 

Handles 

Fan Tray 
Assembly 

RF Output 
Connector 
Type N 

DC/Control/RF Input 
Connector 
24W7 Combo D-Sub 

Summary of Contents for MCPA1900

Page 1: ...Power Amplifier Group Propriety Use pursuant to Company Instruction 1 of 8 Multiple Carrier Power Amplifiers Model MCPA1900 MCPA850 Operation Instruction Date July 25 2005 Version 1 0 Ref RE FCC ID S...

Page 2: ...ions The MCPA1900 135 and MCPA850 135 provide linear amplification of multi carrier mixed mode signals in the cellular and PCS frequency bands respectively The 850 Band and 1900 Band MCPA have the fol...

Page 3: ...and phase control Feed Forward amplifier circuit Main amplifier stage Pre distortion circuit FICA Filter Isolator Combiner Assembly Power conversion circuit Controller circuit Communications circuit I...

Page 4: ...al compensation of the amplifier and to maintain a linearization solution for the pre distortion circuit and the feed forward circuit Figure 1 MSA1900 135 MCPA Front Panel Figure 2 MSA1900 135 Rear Pa...

Page 5: ...s within the PA Module The alarms are mapped to front panel LED behavior as indicated Additionally the alarms are mapped to the discrete line relays and available at the D Sub connector at the rear of...

Page 6: ...n Shut down Y Low input voltage 26V Major On Gain reduced Auto recover Y Bias fault factory only see note 10 Critical On Shut down Self test fail see note 11 Critical On Shut down Configuration fault...

Page 7: ...narios Note 9 A VSWR critical alarm is declared when the reflected power is 80W or more and indicates that the unit may be damaged if not shut down Since the amplifier cannot detect that this conditio...

Page 8: ...ributed to the amplifiers via the sub rack wiring from a front RF connector FCC Statements FCC ID S8L 100270MCPA RE FCC ID S8L 100254MCPA This devise complies with Part 2 15 24 of the FCC Rules Operat...

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