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Tutorial on Basic Sweep Gear Start Here CMA-100 Countermeasures Amplifier

Country/Region china
Company Granite Island Group - Mission and Purpose Statement
Categories Switching Audio Amplifier
ICP License Issued by the Chinese Ministry
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    Tutorial on Basic Sweep Gear Start Here CMA-100 Countermeasures Amplifier

    CMA-100 Countermeasures Amplifier

    Granite Island Group

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      CMA-100 Countermeasures Amplifier

      Countermeasures Amplifier (CMA-100)

      The Counter Measures Audio Amplifier (CMA-100) is a high gain audio amplifier used to detect and identify certain types of surveillance devices attached to building wiring such as telephone wiring, LAN and server systems, AC Power, Alarm wire etc.

      The CMA-100 is designed to provide flexible features and will prove to be very useful in many situations. This amplifier is quite useful for checking telephone lines and other wiring for hostile microphones, testing for hook switch audio leakage, and detection of eavesdropping devices that are sensitive to bias voltages or currents.

      Features

      The CMA-100 has a balanced input impedance of 50K ohm, can withstand being attached to live power lines with voltages up to 250V, and provides up to 115dB of gain.

      Additionally, the CMA-100 utilizes a unique AGC that can automatically adjust gain from -20 to 120dB.

      Signals as large as 10V peak-peak can still be monitored with minimal distortions. Manual gain control can be set to 0, 25, 50, 75, or 100dB. Filters can be positioned to FLAT, LOW PASS, HIGH PASS, or BAND PASS.

      CMA-100 Advantages

      This multifunctional amplifier has a built in AC/DC digital voltmeter, selectable audio filters, and an extremely wide dynamic range.

      Balanced and Unbalanced high impedance inputs provide connectivity to a variety of suspect wiring.

      The CMA100 also provides a bias voltage adjustable between -15V and +15V DC that is used to activate possible devices that are voltage or current sensitive. The bias generator is compatible with most types of line conditions.

      All of these functions employ a sophisticated automatic gain control circuit that is superior to most audio amplifiers.

      If you would like to purchase this or our other products, or
      require a quotation; please contact Granite Island Group by
      telephone at: (978) 546-3803, or via E-mail at: jmatk@tscm.com

      Specifications

      • Input Impedance: 50k balanced
      • Common Mode Rejection: >75 dB
      • Maximum Usable Input: 10V p-p
      • Preamp Auto attenuator: 0 to -20 dB ( with overload warning LED )
      • Automatic Gain Control: -20 to +120 dB ( includes preamp auto attenuator )
      • Manual Gain Control: 0, 25, 50, 75, 100 dB
      • Headphone Gain Control: 0 to 15 dB
      • Maximum System Gain: 115 dB manual mode, 120 dB in Auto Mode
      • Frequency
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