HP 5385A frequency counter in good working condition. Powers up, stable readings, all front-panel controls respond correctly. Both input channels (A and B) are clean and functional. Supports frequency, period, gate time selection, attenuation, low-pass filter, manual/auto trigger level, and display digit selection. Rear panel connectors (10 MHz reference, HP-IB/HP-IL, external input, and line select) are intact with no damage.
Solid lab-grade unit for RF, electronics repair, calibration benches, and test setups.