HP / Agilent 5307A HIGH RESOLUTION COUNTER

The HP/Agilent 5307A is a high-resolution counter module designed for integration into the HP 5300 Measuring System mainframe. It delivers precise frequency, time interval, and ratio measurements with six-digit resolution across multiple operational modes. The instrument combines selectable triggering, adjustable sensitivity control, and low-pass filtering to address demanding electronics testing, calibration, and research applications requiring detailed measurement fidelity.

Technical Specifications Frequency Measurement

Range: 5 Hz to 2 MHz (Hz mode); 50 to 10,000,000 CPM / 0.833 Hz to 166 kHz (CPM mode)

Resolution: Six digits

Sensitivity: 100 mV peak minimum for 100 nsec pulses; continuously adjustable to 2.5 Vrms Time Interval Measurement

Hold-off: 0.35 µsec to 3.5 seconds and 1 msec to 10 msec

Periods Averaged: Two periods at signals up to 100 Hz; increases by factor of 10 per decade, up to 200,000 periods above 1 MHz

Accuracy: ±3 × 10⁻⁷ ± 1 count + trigger error ± time base error Internal Reference

1.00000 MHz (Hz mode); 100,000 M (CPM mode)

Key Features

Selectable positive or negative triggering

Input attenuation: X1 (non-attenuated) and X10 settings

Low-pass filters with 100 Hz and 10 kHz cutoff frequencies

Six-digit LED display

Continuous sensitivity adjustment via front-panel control

Mode selection between Hz and CPM display via pushbutton

Typical Applications Electronics testing, calibration work, and precision research requiring high-resolution frequency and time interval characterization.

Compatibility & Integration Designed as a plug-in module for the HP 5300 Measuring System mainframe, which provides power and system integration.