HP / Agilent 5334A 100 MHz Universal Counter

The HP/Agilent 5334A is a dual-channel 100 MHz universal counter engineered for precision frequency, period, and time interval measurements across electronics development, quality assurance, and scientific research. Two matched input channels deliver 9-digit resolution on frequency and period, with time interval resolution down to 2 ns single-shot or 200 ps averaged. An optional C-channel extends range to 1.3 GHz. The instrument supports 12 measurement functions including frequency, period, rise/fall time, pulse width, peak amplitude, AC/DC voltage, time interval delay, ratio, and totalize.

Technical Specifications Measurement Channels & Resolution

Two matched 100 MHz input channels (A and B); optional C-channel to 1.3 GHz

Frequency and period: 9 digits per second

Time interval: 2 ns single-shot; 200 ps with 100 Gate Averaging

Frequency range (DC coupled): 0 to 100 MHz

Frequency range (AC coupled, 1 MΩ): 30 Hz to 100 MHz

Frequency range (AC coupled, 50 Ω): 1 MHz to 100 MHz Input Sensitivity & Dynamic Range

Sensitivity: 15 mV rms sine (to 20 MHz); 35 mV rms sine (to 100 MHz); 100 mV peak-to-peak pulse (5 ns minimum width)

Adjustable to 150 mV rms via front panel control

Dynamic range: 45 mV to 5 V peak-to-peak (DC to 20 MHz); 100 mV to 2.5 V peak-to-peak (to 100 MHz)

Trigger level: ±5.1 V (X1 attenuation); ±51 V (X10 attenuation)

Input impedance: 1 MΩ || <60 pF (AC or DC coupled); 500 Ω switchable

Damage rating: 500 Ω input to 5 V rms; 1 MΩ (X1) to 200 V DC + peak AC (≤3.5 kHz); ±15 Vdc + peak ac Operating Features

AC or DC coupling with independent trigger slope selection (+ or −)

100 kHz low-pass filter (Channel A, switchable)

Manual (X1/X10) or auto attenuator

Arming input for measurement start/stop control

Non-volatile memory: nine front panel setups

HP-IB programmability standard for test system integration

User-defined math functions with custom unit normalization and offset

Key Features

Dual 100 MHz channels with optional 1.3 GHz extension

Nanosecond-class time interval resolution

12 measurement functions in one instrument

Full HP-IB control for automated systems

Field-selectable input impedance and coupling

Typical Applications Frequency verification and calibration; pulse timing analysis; rise/fall time characterization; device parameter measurement via ratio and totalize functions; system integration via HP-IB control.

Compatibility & Integration HP-IB (IEEE 488) programmability enables integration into automated test environments. Front panel setup storage supports repetitive measurement sequences without reconfiguration.