HP 5316A 100 MHz Universal Counter — Key specifications

Attribute	Specification
Model	HP 5316A
Type	Universal frequency/period/ratio/time‑interval counter (dual‑channel)
Frequency range (standard)	DC to 100 MHz (Option 003 extends to 1 GHz)
Channels	Dual channels A and B (independent inputs; ratio and A by B measurements)
Input sensitivity	10 mVrms sine to 10 MHz; 25 mVrms to 100 MHz (Channel A/B, AC coupled)
Dynamic range	30 mV to 5 Vpp (0–10 MHz); 75 mV to 5 Vpp (10–100 MHz)
Input coupling / impedance	AC or DC coupling; 1 MΩ nominal
Trigger level	Variable between +2.5 V and −2.5 V; slope selectable
Attenuator	×1 / ×20 selectable
Time interval resolution	Sub‑nanosecond timing; time‑interval averaging to 10 ps
Low‑frequency resolution	Up to 7 digits per second of gate time (continuously adjustable gate time)
Standard measurements	Frequency A; Period A; Ratio A/B; A by B; Totalize; Time Interval; Time Interval Average
Interfaces	HP‑IB / IEEE‑488 (remote control)
Options	Option 003: extends frequency range to 1 GHz and pulsed RF measurement capability
Display / Controls	Front‑panel numeric display and function keys; programmable gate time and measurement modes
Typical applications	Bench and production frequency/period/ratio/time‑interval measurements, RF test, timing analysis

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Notes and important details

• The 5316A uses HP’s MRC architecture for high resolution at low frequencies and flexible, continuously adjustable gate times for trade‑offs between speed and resolution. .
• Sensitivity and dynamic range differ slightly for the Common input; consult the operating manual for exact figures and trigger behavior. .
• Option 003 is commonly listed and required if you need measurements above 100 MHz (up to 1 GHz) or narrow pulse/RF pulse measurements. .