The Fluke PM6690 is a benchtop frequency timer/counter/analyzer delivering 12-digit frequency resolution and 100 ps single-shot time interval measurement. It combines high-speed data acquisition—up to 250k measurements/second to internal memory—with powerful analysis tools including statistical analysis, TrendPlot, and Histogram display for comprehensive signal characterization.
Technical Specifications
Frequency Measurement
• Resolution: 12 digits/second; graphical display to 14 digits
• Standard range: 300 MHz
• Optional RF prescaler inputs: 3 GHz or 8 GHz
Time Interval & Phase
• Single-shot time resolution: 100 ps
• Zero dead-time technique: up to 250k measurements/second
• Phase resolution: 0.001°
• SMART Time Interval with automatic start/stop detection
Additional Measurements
• Period, ratio, rise/fall time, duty factor, pulse width, voltage, and burst frequency
• Trigger levels: 10% and 90% of signal amplitude, or manual (% of amplitude or volts)
• Minimum pulse width: 1.6 ns
Data Handling
• Internal memory: 750,000 measurements
• GPIB throughput: up to 2000 measurements/second
• Statistical analysis with limit qualifying and auxiliary readings (Vmax, Vmin, Vp-p)
• Modulation Domain Analysis available with TimeView 90W software
Environmental
• Operating temperature: 0°C to +50°C
• Power consumption: approximately 20W (without OCXO option)
– Key Features
• True phase and duty cycle via single-pass measurement technique
• Zero dead-time acquisition eliminates measurement gaps
• 750k internal memory for high-volume data capture
• USB 2.0 Full Speed (11 Mbit/s) and GPIB interfaces
– Typical Applications
Telecommunications, research and development, electronics manufacturing, and calibration laboratories.
– Compatibility & Integration
The PM6690 emulates Agilent/HP 53131A or 53132A behavior for legacy system integration. It supports native SCPI bus mode and full IEEE 488.2-1987 compliance with interface functions SH1, AH1, T6, L4, SR1, RL1, DC1, DT1, and E2.
