The Leeds & Northrup 4300 is a microprocessor-based RF powermeter engineered for simultaneous measurement of multiple radio frequency power levels across ultra-wide frequency spans. This solid-state instrument delivers real-time multichannel measurement capability with field-installable input modules, each independently handling range selection, sensor data processing, and analog-to-digital conversion. The 4300 operates across 100 kHz to 110 GHz, measuring power from 0.1 nW to 2 W. Each channel module incorporates dedicated input amplifiers, A/D converters, and onboard microprocessors for autonomous operation. Host processing collects and integrates channel data for comprehensive RF power characterization in laboratory and production environments requiring precision across multiple simultaneous measurement points.
Technical Specifications
• Frequency range: 100 kHz to 110 GHz
• Power measurement range: 0.1 nW to 2 W (-70 dBm to +33 dBm)
• Simultaneous measurement channels: Up to 6 RF power levels
• Architecture: Microprocessor-based, solid-state design
• Channel processing: Dedicated input amplifiers, A/D converters, and microprocessors per module
– Key Features
• Real-time multichannel measurement across independent RF paths
• Field-installable channel modules for flexible system configuration
• Autonomous range selection and sensor data management at the channel level
• Host-based data collection and integration
– Typical Applications
• Multi-point RF power monitoring in production test systems
• Laboratory characterization of RF circuits and components
• Simultaneous power level measurement across distributed RF networks
– Compatibility & Integration
Channel modules integrate into a host processing architecture that collects and manages data from all active measurement channels.

















