The HP/Agilent 5334B is a 100 MHz universal counter engineered for precision frequency, period, time interval, and ratio measurements across research, calibration, and automated test environments. It delivers 9-digit resolution per second of gate time for frequency measurements from 0.001 Hz to 100 MHz on both channels, with single-shot time interval resolution of 2 ns and averaged resolution down to 200 ps. The instrument measures rise time, fall time, pulse width, peak amplitude, and AC/DC voltage with selectable triggering, auto-attenuation, and configurable input impedance (1 MΩ or 50 Ω). A standard 10 MHz OCXO time base ensures stability; Option 010 provides enhanced long-term accuracy with a 5 × 10⁻¹⁰ per day aging rate.
## Technical Specifications
**Frequency and Period Measurements**
• Range: 0.001 Hz to 100 MHz (Channels A and B)
• Resolution: 9 digits per second of gate time
• Time Base: 10 MHz OCXO (standard); Option 010 with 5 × 10⁻¹⁰ per day aging rate after 24-hour warm-up
**Time Interval Measurements**
• Single-shot resolution: 2 ns
• Averaged resolution: 200 ps (100-gate averaging)
• Selectable delay: 1 ms to 99.999 seconds
**Input Characteristics (Channels A and B)**
• Frequency range: DC to 100 MHz (DC-coupled); 30 Hz to 100 MHz (AC-coupled, 1 MΩ); 1 MHz to 100 MHz (AC-coupled, 50 Ω)
• Sensitivity: 15 mV rms to 20 MHz; 35 mV rms to 100 MHz; 100 mV peak-to-peak minimum for 5 ns pulses
• Dynamic range: 45 mV to 5 V peak-to-peak to 20 MHz; 100 mV to 2.5 V peak-to-peak to 100 MHz
• Impedance: 1 MΩ or 50 Ω (switch-selectable)
• Coupling: AC or DC (switch-selectable)
• Attenuator: Manual (X1 or X10) and Auto modes
• Low-pass filter: 100 kHz nominal (Channel A, switchable)
**Triggering**
• Trigger level: ±5.1 V adjustable range (X attn), displayed in 20 mV steps
• Auto trigger: 100 Hz to 100 MHz (DC-coupled); 100 Hz to 100 MHz (AC-coupled, 1 MΩ); 1 MHz to 100 MHz (AC-coupled, 50 Ω)
• Trigger slope: Independent ±slope selection for START and STOP
• Sensitivity control: 15 mV rms to 150 mV rms variable range
## Key Features
• Independent trigger slope selection for START and STOP signals
• Auto-triggering across DC and AC coupling modes
• Switchable 100 kHz low-pass filter on Channel A
• Manual and automatic attenuation modes for simplified operation
## Typical Applications
• Research and development signal characterization
• Precision calibration laboratory measurements
• Automated test equipment (ATE) integration
• Time interval and pulse parameter analysis
## Compatibility & Integration
The 5334B accepts signals from both 1 MΩ and 50 Ω sources with AC or DC coupling, supporting integration into mixed-impedance test environments.
