Summary of Contents for REI 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...
- Page 3 CMA. The CMA-100 is a high gain audio amplifier that is used to detect and identify certain types of surveillance devices connected to building wiring including telephone wiring, LAN, Server systems, de-energized AC power, etc...
- Page 4 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 multimeter first to determine the risk.
- Page 5 CONTROLS: 1. On/Low Battery Indicator 2. Power Switch 3. Filter Selector 4. Gain Selector 5. Test Lead Cable Connector 6. Line Out Jack - 3.5mm 7. Meter Figure 1 8. Input Attenuator Indicator 9. Line Bias Indicator 10. Line Bias Switch 11.
- Page 6 CONTROLS: IDENTIFICATION Please refer to Figure 1 for the following function descriptions. 1. The Power On Indicator is used to identify when the unit is turned on. If the battery voltage falls below 6.9V, then the LED will extinguish and the battery should be replaced.
- Page 7 CONTROLS: 7. When the Line Bias Generator is turned off, the voltage meter can measure both AC and DC volts (Note: AC volts are read as RMS values). Note: When the Line Bias Generator is turned on, the voltage meter will measure a combination of the voltage in the circuit that the test leads are connected to and the voltage presented from the Bias Generator.
- Page 8 USING THE CMA: Single Line and Balanced Line Connections The CMA provides for connections to either single line systems (typically a single line with a ground such as coax) or a balanced pair line such as telephone or LAN wiring. For Single Line systems: Connect the Green grounding connector to the Black connector.
- Page 9 USING THE CMA: voltage supply. Then, the DC Bias voltage can be switched on and the control knob slowly turned to both negative and positive directions while listening with the headphones to see if a microphone is activated. Using the CMA with other probes The CMA can be connected to a variety of other probes.
-
Page 10: Specifications
SPECIFICATIONS INPUT IMPEDANCE: COMMON MODE REJECTION: MAXIMUM USABLE INPUT: PREAMP AUTO ATTENUATOR: DYNAMIC RANGE: MANUAL GAIN CONTROL: HEADPHONE GAIN CONTROL: MAXIMUM SYSTEM GAIN: FREQUENCY RESPONSE: HIGH PASS FILTER: LOW PASS FILTER: BAND PASS FILTER: HEADPHONE AUDIO OUTPUT: LINEOUT AUDIO OUTPUT: BIAS CONTROL: DIGITAL VOLTMETER: POWER ON/LOW BATTERY LED...