The Agilent/Keysight 5348A is a portable microwave counter and power meter that combines frequency measurement and power analysis into a single instrument. It covers frequencies from 50 MHz to 26.5 GHz on the primary microwave input, with a secondary input extending down to 10 Hz. The unit delivers measurement resolution selectable from 1 Hz to 1 MHz, tracking speeds up to 1 GHz/sec, and acquisition times under 125 ms. Power measurement capability spans –70 dBm to +20 dBm with 50 dB dynamic range in 10 dB steps and 0.01 dB resolution in logarithmic mode. Input impedance is 50 ohm on the microwave channel with a maximum safe input of +7 dBm and damage levels reaching +39 dBm at 500 MHz–6 GHz. The ruggedized form factor, five-function key interface, and optional internal battery support field installation, maintenance of microwave links, component testing, and RF measurement tasks. Sensitivity varies by frequency band: –32 dBm typical at 500 MHz–12.4 GHz, –27 dBm at 12.4–20.0 GHz, and –20 dBm at 20.0–26.5 GHz. Automatic amplitude discrimination isolates the dominant signal when it exceeds nearby signals by 6 dB or more within 500 MHz, or by 20 dB above competing signals in the 500 MHz–26.5 GHz band.
Technical Specifications
• Frequency Counter — Input 1: 50 MHz to 26.5 GHz (CW)
• Frequency Counter — Input 2: 10 Hz to 525 MHz
• Resolution: 1 Hz to 1 MHz (selectable), or 1 Hz / 10 kHz
• Tracking Speed: 1 MHz/sec (1 Hz resolution); 1 GHz/sec (10 kHz resolution)
• Acquisition Time: <125 ms at 1 Hz; <60 ms at 10 kHz
• Power Range: –70 dBm to +20 dBm (100 pW to 100 mW); –70 dBm to +44 dBm with specified sensors
• Power Dynamic Range: 50 dB in 10 dB steps
• Power Resolution: 0.01 dB (logarithmic) or 0.1% of full scale (linear)
• Power Accuracy: ±0.02 dB or ±5%
• Input 1 Impedance: 50 ohm
• Input 2 Impedance: 1 Mohm nominal with <70 pF shunt (10 Hz–80 MHz); 50 ohm nominal (10 MHz–525 MHz)
• Maximum Input Level: +7 dBm
• Damage Level (Input 1): +39 dBm at 500 MHz–6 GHz; +36 dBm at 6–18 GHz; +34.8 dBm at 18–26.5 GHz
– Key Features
• Dual input configuration for microwave and low-frequency measurements
• Sensitivity ranges from –35 dBm typical (500 MHz–12.4 GHz) to –27 dBm typical (20.0–26.5 GHz)
• Maximum deviation limits: 20 MHz p-p automatic mode; 60 MHz p-p manual mode (HP-IB)
• Maximum FM rate: 10 MHz
• Automatic filter selection for dynamic range optimization
• Digital zero set: ±5% of full scale on most sensitive range
– Typical Applications
• Microwave link installation and field maintenance
• RF component characterization and testing
• General-purpose RF and microwave measurements
– Compatibility & Integration
• HP-IB interface support for remote control and manual mode configuration
