The Leader 192A is a self-contained audio test instrument combining a sine/square wave generator, precision attenuator, and dual-channel AC millivoltmeter. Designed for production, quality control, service, and educational environments, this compact unit eliminates the need for multiple bench instruments.
– Technical Specifications
Audio Generator
• Waveforms: Sine and Square
• Frequency Range: 10 Hz to 1 MHz (5 ranges)
• Output Voltage: 3 V rms maximum into 600 Ω
• THD: <0.05% (500 Hz to 20 kHz)
• Frequency Accuracy: ±3% + 1 Hz
• Source Resistance: 600 Ω (switchable)
Attenuator
• Attenuation Range: 0–120 dB
• Step Resolution: 1 dB
• Load Impedance: 600 Ω
AC Millivoltmeter (Dual Channel)
• Voltage Ranges: 0.15 mV to 500 V rms (12 ranges)
• Measurement Scales: RMS volts, dBV, dBm
• dBm Range: -80 dBm to +56 dBm
• Bandwidth: Flat within 2% (20 Hz to 100 kHz)
• Accuracy: ±2% of full scale at 1 kHz
• Output Connectors: Banana terminals and phono jacks
– Key Features
• Dual independent AC millivoltmeters enable stereo (2-channel) measurements
• Mechanical range-lock couples both measurement channels with optional independent offset operation
• Integrated output amplifiers function as high-gain preamps for oscilloscope drive or external equipment
• Single-unit integration reduces bench space while maintaining measurement precision
– Typical Applications
• Audio circuit production and quality assurance
• Equipment servicing and troubleshooting
• Educational demonstrations and lab work
• Stereo audio signal analysis
– Compatibility & Integration
Output connectors support both banana posts and phono jacks for flexible integration with standard audio test setups. Internal amplifier outputs enable use as external preamps for higher-gain measurement chains.
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