Racal Instruments 9303

The Racal Instruments 9303 is a True RMS RF Level Meter that delivers precise signal level measurements across RF and microwave frequencies. This microprocessor-controlled instrument performs True RMS voltage measurements with flexible display options: absolute voltage, ratio to a stored reference (numeric or dB), or voltage difference. The 9303 combines wide dynamic range with fast, reliable measurements for RF circuit analysis, signal characterization, and system troubleshooting in telecommunications and RF engineering environments.

– Technical Specifications

Measurement Functions
• True RMS voltage measurement
• Voltage display as absolute value, ratio to stored reference (numeric or dB), or difference
• Crest factor capability up to 15

Frequency Range
• 10 kHz to 2 GHz

Voltage Range
• 30 µV to 3.162 V rms

Accuracy
• ±2%

Auto Ranging
• Automatic range selection with manual override capability

Power Input
• 90/237 VAC, 25 VA typical

– Key Features

• Built-in auto-calibration with internal calibration signal source
• User ECAL factors for temperature-compensated accuracy
• GPIB interface for remote control and automated measurement
• 12-character ASCII output format for measured values and error codes
• Programmable trigger modes with variable measurement delays
• External sensing head configuration (Racal-Dana 11-1478)

– Typical Applications

• RF signal level monitoring and verification
• Circuit and system troubleshooting
• Transmission line and antenna measurements
• Signal integrity analysis in telecommunications systems
• Laboratory and field-based RF characterization

– Compatibility & Integration

• Requires Racal-Dana 11-1478 sensing head for operation
• GPIB control with standard handshake protocol (NRFD, DAV, NDAC)
• Optional switch bank assembly (19-1014) for specialized testing and calibration modes
• 19″ rack-mount configuration
• Weight: 6.0 kg