Venable Instruments VLA-1500

The Venable Instruments VLA-1500 is a 4-quadrant power amplifier engineered for precision impedance analysis and system characterization in electronic circuits. It serves as the core amplification module within Venable’s Input/Output Impedance Measurement Set, enabling detailed measurements essential for power distribution network optimization and signal integrity validation. The instrument operates across DC to 250 kHz (with injection bandwidth extendable to 500 kHz) and delivers 430 W RMS output, supporting variable gain from 0 to 20 V/V via front-panel control. Three operational configurations—High Voltage, Automatic, and High Current—accommodate diverse load conditions. The integrated injection transformer features high saturation current capability, handling DC currents up to 50 A or 100 A depending on model selection, with parallel secondary connection available for increased current ratings. Purpose-built for research, development, and quality control testing, the VLA-1500 integrates with Venable measurement kits to characterize input impedance, output impedance, conducted audio susceptibility, PSRR, and three-phase impedance under operational power conditions—a capability unique to Venable’s FRA portfolio. The instrument is rack-mountable with front-panel gain control, status indicators, and fault monitoring.

– Technical Specifications

• Output Power: 430 W RMS (higher ratings available on special request)
• Gain Range: 0 to 20 V/V (front-panel adjustment)
• Small Signal Bandwidth: DC to 250 kHz (3 dB bandwidth: 30 to 250 kHz)
• Injection Bandwidth: 5 Hz to 500 kHz
• Injection Transformer: High saturation secondary; 50 A or 100 A DC rated
• Operating Modes: High Voltage, Automatic, High Current (factory default)
• Operating Temperature: 23 °C ± 5 °C
• Operating Humidity: 10% to 80% RH (non-condensing)

– Key Features

• DC-coupled power delivery capability
• Multiple secondary transformer connections in parallel for increased current rating
• Selectable input/output configurations on rear panel
• Fault and status indication on front panel
• Transformer bandwidth extension to 500 kHz for injection measurements

– Typical Applications

• Input and output impedance measurement
• Power distribution network characterization
• Three-phase impedance analysis
• Conducted audio susceptibility testing
• Power supply rejection ratio (PSRR) evaluation
• System-level impedance under operational power conditions

– Compatibility & Integration

Integrates with Venable Stability Analysis software and Input/Output Impedance Measurement Kits.