The Agilent/Keysight 53148A is a three-function measurement instrument combining a 26.5 GHz microwave frequency counter, true power meter, and DC digital voltmeter in a single portable unit. Dual-channel frequency measurement spans 10 Hz to 125 MHz on Channel 1 and 50 MHz to 26.5 GHz on Channel 2 for continuous-wave microwave signals. The integrated power meter supports -70 dBm to +44 dBm measurements with Keysight 8480 series sensors, delivering 0.01 dB resolution and 0.02 dB basic accuracy. A high-resolution DC voltmeter measures ±50 Vdc for AGC and power supply monitoring. GPIB and RS-232 interfaces enable direct integration into automated test equipment and field measurement systems.
Technical Specifications
Frequency Counter
• Channel 1: 10 Hz to 125 MHz
• Channel 2 (CW Microwave): 50 MHz to 26.5 GHz
• Selectable resolution: 1 Hz to 1 MHz
• Measurement type: Continuous wave microwave frequency
Power Meter
• Power range: -70 dBm to +44 dBm (with 8480 series sensors)
• Resolution: 0.01 dB
• Basic accuracy: 0.02 dB
• Sensor compatibility: Keysight 8480 series (8482A, 8484A, 8482B, 8485D, 8487D)
Digital Voltmeter
• DC voltage measurement: ±50 Vdc
• Applications: AGC and power supply monitoring
Interfaces & Control
• GPIB and RS-232
• SCPI programmable
– Key Features
• Portable and rugged design with rubber bumpers for field durability
• LCD display with switchable backlight
• Optional oven timebase (Option 001) for enhanced stability
• Averaging function for smoothed measurements
• Relative and offset reading modes for frequency and power
• Optional internal batteries and DC power input (Option 002)
• Optional rack mounting kit available (Option 1CM)
• Optional carrying case with accessory storage
– Typical Applications
• Installation and maintenance testing in RF/microwave systems
• Component characterization in ATE environments
• Field measurement of frequency, power, and DC voltage
• Automated test equipment integration
– Compatibility & Integration
The 53148A accepts Keysight 8480 series power sensors for extended measurement range. AC power is standard; optional battery and DC input configurations support field deployment. SCPI programmability facilitates integration into existing automated test workflows.
