HP / Agilent 81133A Pulse Pattern Generator, 3.35 GHz, single channel

The HP/Agilent 81133A is a single-channel pulse pattern generator delivering precise signal generation from 15 MHz to 3.35 GHz. Engineered for high-speed digital circuit validation and communication system testing, this instrument generates NRZ, RZ, R1, and DNRZ data formats with pattern memory depths up to 12 Mbit per channel. It combines low jitter performance - 1.5 ps typical - with programmable jitter emulation to ± 250 ps, enabling realistic signal integrity assessment and stress testing of receiver circuits.

Technical Specifications Frequency & Timing

Operating frequency: 15 MHz to 3.35 GHz

Pulse period range: 298.5 ps to 66.6 ns

Internal clock period resolution: 0.001 ps

Transition time (20% to 80%): <60 ps typical

RMS jitter: 1.5 ps typical

Frequency divider options: 1, 2, 4, 8, 16, 32, 64, 128 Output Characteristics

Output amplitude: 50 mV to 2.00 Vpp

Output impedance: 50 Ω nominal

Level window: -2.00 V to +3.00 V

Overshoot/ringing: <10% + 10 mV (differential outputs)

Short circuit current: -80 mA to +120 mA nominal

Variable crossover point: 30% to 70% typical Data Generation

Pattern memory: 8 Kbit standard; 12 Mbit extended per channel

PRBS capability: 2^5-1 through 2^31-1

Operating modes: Square (50% duty cycle), Pulse, Data, Burst

Jitter modulation: ± 250 ps or ± 25 ps selectable Environmental

Operating temperature: 0 to 55 °C

Humidity: Maximum 95% RH

Altitude: Up to 2000 m

Key Features

Single-channel architecture with 8 Kbit or extended 12 Mbit pattern memory

Programmable jitter emulation up to ± 250 ps for receiver margin testing

AC-coupled clock input with 50 Ω impedance and optional DC termination

External trigger and delay control inputs for synchronized operation

Support for ECL, LVPECL, and LVDS logic families

Typical Applications

High-speed digital circuit characterization and validation

Serial communication system receiver stress testing

Signal integrity measurements and jitter analysis

PRBS pattern generation for bit error rate testing

Clock and data distribution network emulation

Compatibility & Integration

Remote control via GPIB, LAN, or USB 2.0

Integrates with Keysight 54850A and 86100C DCA-J oscilloscopes

Compatible with ECL, LVPECL, and LVDS output termination schemes