Features of the CMA-100: It has a built-in AC/DC voltmeter, selective audio filters with a wide dynamic range. A balanced high-impedance input ensures a guaranteed connection to a suspect wire line. The CMA-100 also provides an offset voltage adjustable between -14.5 V and +14.5 V, which is used to activate possible devices that are sensitive to current or voltage. The offset voltage generator matches the parameters of most lines. All these features use a sophisticated automatic gain circuit, which allows this device to outperform most audio amplifiers.
CMA-100 Controls: Power/Battery Status Indicator Power Button Filter Switch Amplifier Switch Test Cable Jack Line Out Voltage Indicator Input Attenuator Indicator Bias Voltage Indicator Bias Voltage Button Bias Voltage Control Voltage Voltage Volume Headphone Jack
CMA-100 Specifications: Input Impedance: 50 kOhm, Balanced AGC Range: > 75 dB Maximum Input Voltage: 31 V Peak Preamp Automatic Attenuator: 0 ÷ -40 dB (with Clip Indicator) Gain AGC: -20 ÷ +120 dB (including Preamp Attenuator) Manual Gain Control: 0, 25, 50, 75, 100 dB Control Headphone gain: 0 ÷ 15 dB Maximum gain: 115 dB Frequency range: 25 Hz ÷ 44 kHz High-pass filter: 3.2 kHz ÷ 44 kHz Low-pass filter: 25 Hz ÷ 3.2 kHz Band-pass filter: 320 Hz ÷ 3.2 kHz Headphone output: 16 ohms Line output: 600 ohms Bias voltages: 0 ÷ ± 14.5 V, 5 mA max. Digital voltmeter: ~/± 199.9 V, auto 0, auto ± Battery on/low indicator: LED goes out at 6.9 V Battery: 9 V alkaline (5 ÷ 30 h life) Maximum input voltage: = 250 V, ~ 40 V Cases insulation resistance: > 10 Mohm Size: 184.4 mm x 69.8 mm x 44.5 mm Weight: 432 grams
Package contents: CMA-100 meter Probe set Headphones Hard carrying case