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CMA-100 

 

Counter Measures Amplifier 

 

Owner’s Guide 

 
 
 

     

 

 

 
 
 

Research Electronics International 

455 Security Place 

Algood, TN 38506 

931-537-3359 

www.reiusa.net 

 

 

Summary of Contents for CMA-100

Page 1: ...CMA 100 Counter Measures Amplifier Owner s Guide Research Electronics International 455 Security Place Algood TN 38506 931 537 3359 www reiusa net...

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Page 3: ...s motion detectors Intercom speakers AC Junction boxes etc 4 Many digital phone systems have audio leakage that occurs on the digital lines due to cross talk within the phone set A CMA can be used to...

Page 4: ...uipment or user it is NOT recommend maintaining connection to such circuits Extreme care should be taken when connecting the CMA 100 to an unknown electrical source Always check line voltage with a mu...

Page 5: ...2 Power Switch 3 Filter Selector 4 Gain Selector 5 Test Lead Cable Connector 6 Line Out Jack 3 5mm 7 Meter 8 Input Attenuator Indicator 9 Line Bias Indicator 10 Line Bias Switch 11 Line Bias Voltage...

Page 6: ...quencies above 320Hz and attenuation of lower frequencies The effect of this filter is to remove low frequency noise such as AC power line noise 4 The Gain Selector gives the user two operation modes...

Page 7: ...rator is turned on 10 The Line Bias Switch will turn the Bias Generator on or off 11 The Line Bias Voltage Adjust will control the magnitude of the bias voltage The mid position will generate 0V Turn...

Page 8: ...volts Strong Signal Interference If the input is attached to an AC voltage greater than 40 volts the audio content will be masked Signal Frequency Interference Wiring in a building is very susceptibl...

Page 9: ...ing sound within physical structures Over voltage protection If the CMA s input voltage limit is exceeded then damage will most likely occur that will make the CMA require repairs The CMA case is isol...

Page 10: ...Hz LOW PASS FILTER 25 Hz to 3 2 kHz BAND PASS FILTER 320 Hz to 3 2 kHz HEADPHONE AUDIO OUTPUT 16 ohm 105dB SPL limited LINEOUT AUDIO OUTPUT 600 ohm BIAS CONTROL 0 to 14 5 VDC 5 mA max Over current pro...

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