The Agilent 81134A is a 2-channel 3.35 GHz pulse pattern generator designed for digital device characterization tasks where leading-edge signal integrity and timing performance are required. It provides programmable pulse periods from 15 MHz (66.6 ns) down to 3.35 GHz (298.5 ps) on all channels, with differential outputs and full control over signal parameters to enable typical and worst-case device tests. A companion 1-channel model, the 81133A, shares the same core architecture.

The instrument is used for simulating the pulse and pattern conditions that a digital device will encounter in its final application. Datasheet-listed use cases include signal integrity measurements, generation of real-world-like signals by adding jitter to clock or data signals, distorting signals for eye diagram measurements, PLL frequency sweep, and microprocessor clock sweep applications where dropouts would otherwise prevent reliable measurement.

Brand Heritage

Agilent Technologies was spun out of Hewlett-Packard's test and measurement business in 1999. In 2014, Agilent's electronic measurement business became Keysight Technologies, which carries the direct product lineage and continued support for Agilent-era pulse and pattern generators including the 81133A and 81134A.

Compare Other Models in This Series

The 81133A and 81134A share a common 3.35 GHz pulse/pattern generation architecture, the same timing and jitter performance, the same 12 Mbit per-channel pattern memory, and the same Delay Control Input for jitter injection. The two models differ only in channel count and the corresponding front-panel I/O configuration.

Both instruments support NRZ, RZ, and R1 data formats, PRBS sequences from 2^5−1 to 2^31−1, programmable amplitude from 50 mV to 2.00 V, and SCPI control over GPIB, LAN, and USB 2.0. The same store/recall behavior, the same direct-mode dropout-free frequency change capability, and the same Variable Crossover and jitter emulation features apply across the family.

Each pre-owned model below is listed on its own dedicated product page with condition-matched pricing and availability. The two models are not interchangeable on the bench: choose the 81133A when a single differential channel meets the application requirement, and choose the 81134A when two independent differential channels with separate Delay Control Inputs are required.

The 81134A is the 2-channel configuration. Its front panel provides four output connectors for the two differential channels, a trigger output, a clock input, a start input, and two Delay Control Inputs—one for each output channel. This allows independent jitter injection per channel and is the configuration shown in the datasheet's Jitter Emulation Test Setup.

The 81133A provides one differential channel with two output connectors and one Delay Control Input. The 81134A provides two differential channels with four output connectors and two Delay Control Inputs, one per channel. Trigger output, clock input, and start input are present on both models.

Pulse, data, and PRBS modes are independently configurable per channel on the 81134A, which makes it the appropriate choice for differential receiver test setups requiring two phase-correlated or independently-jittered stimulus signals. The comparison table that follows lists channel count and the resulting front-panel I/O differences side by side.

Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below.

Product Core & Specifications

About this used unit

• Warranty included
• Functional verification included
• Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data.
• Note that unnecessary accessories may not be included (contact Test Architect to confirm).

Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.