HP / Agilent 8111A 20 MHZ PULSE/FUNCTION GENERATOR

The HP/Agilent 8111A is a 20 MHz pulse/function generator that delivers precise waveform synthesis across seven distinct output types—sine, triangle, ramp, square, pulse, haversine, and havertriangle. This compact benchtop instrument spans 1 Hz to 20.0 MHz with ±5% frequency accuracy (±10% below 10 Hz) and exceptional jitter performance of <0.1% + 50 ps, making it suitable for component testing, production validation, and service environments requiring high repeatability.

The pulse generator section provides pulse widths from 25.0 ns to 100 ms with ±5% ±2 ns accuracy and rise/fall times under 10 ns. Variable duty cycle operation extends to 999 kHz (10% to 90%), while fixed 50% duty cycle is available across the full frequency range. Output amplitude spans 1.60 mVpp to 16.00 Vpp with 32 Vpp capability on all waveforms, supported by programmable DC offset up to +8.00 V and 50 ohm output impedance.

Triggered, gated, and VCO modes provide flexible stimulus control. The voltage-controlled oscillator accepts external signals from 0.1 V to 10 V (DC to 1 kHz) across a 2-decade tuning range. Optional burst mode generates 1 to 1999 precise waveform cycles with an "extra cycle" feature for event examination. Digital parameter entry with 3-digit frequency and pulse-width resolution ensures repeatable, error-checked operation.

## Technical Specifications

• Frequency: 1 Hz to 20.0 MHz with ±5% accuracy (±10% below 10 Hz); jitter <0.1% + 50 ps; stability ±0.2% over 1 hour, ±0.5% over 24 hours
• Pulse width: 25.0 ns to 100 ms at ±5% ±2 ns accuracy; rise/fall time <10 ns
• Amplitude: 1.60 mVpp to 16.00 Vpp (32 Vpp maximum); ±5% accuracy at 1 kHz
• DC offset: 0 to +8.00 V with 3-digit resolution
• Duty cycle: 10–90% variable to 999 kHz; 50% fixed to 20 MHz
• Output impedance: 50 ohm ±5%

## Key Features

• Seven waveform types for diverse test scenarios
• Triggered, gated, and VCO operating modes
• Burst mode with 1–1999 period control and extra-cycle examination (Option 001)
• Perturbation specification: <±5% (<+10% below 0.16 Vpp)
• Digital display with error detection

## Physical & Environmental

Dimensions: 89 mm (H) × 212.3 mm (W) × 345 mm (D); weight 4.6 kg. Operating range: 0°C to 55°C. Rack mount kits available (single: HP 5061-9672; dual: HP 5061-9674).

## Compatibility & Integration

Originally Hewlett-Packard manufactured; now badged as Agilent. All HP model designations correspond to equivalent Agilent parts.