The Agilent 81110A is a pulse pattern generator from the 81100 family, designed to generate the standard pulses and digital patterns needed for testing digital designs and components across current logic technologies including CMOS, TTL, LVDS, and ECL. As a mainframe instrument, the 81110A accepts one or two output modules — the 81111A (165 MHz, 10 V) or the 81112A (330 MHz, 3.8 V differential) — allowing the configuration to match the specific frequency, voltage, and connector requirements of the test application.

The 81110A is used for testing digital designs and components, generating stimuli for current logic technologies (CMOS, TTL, LVDS, ECL), simulation of reflections and distortions, and generation of three-level and four-level codes. Pattern mode supports user-defined data sequences up to 16 kbit per channel as well as pseudo-random binary sequences, making the instrument suitable for both deterministic stimulus generation and statistical bit-pattern testing. With dual output modules, multi-level and multi-timing signals can be created using the internal channel addition feature.

ValueTronics International has supported the test and measurement community since 1992 from our 20,000 sq ft secure warehouse at 1675 Cambridge Drive, Elgin, Illinois. Unlike drop-shippers and pass-through brokers, we physically stock, inspect, and test instruments in-house before they ship. The 81110A and other 81100-family mainframes and output modules are evaluated by our technicians, and condition reports document what we found against the manufacturer's published specifications. Calibration upgrade paths are available with each unit for customers whose quality systems require NIST-traceable or accredited calibration documentation.

Brand Heritage

Hewlett-Packard's test and measurement business was spun off as Agilent Technologies in 1999, then transferred to Keysight Technologies in 2014. Instruments such as the 81110A bearing the Agilent brand are part of this continuous lineage. The 81100 family pulse pattern generators continue to be supported through the Keysight service organization for calibration and repair where applicable.

Compare Other Models in This Series

The Agilent 81100 family of pulse pattern generators spans six mainframe-and-module configurations covering frequency ranges from 1 mHz to 660 MHz. The family is organized around four mainframes — the 81101A (single channel, 50 MHz), the 81104A (one or two channels, 80 MHz), the 81110A (one or two channels, 165 or 330 MHz depending on output module), and the 81130A (one or two channels, 400 or 660 MHz depending on output module).

All members of the 81100 family share form/fit compatibility and offer pattern mode operation from 80 MHz upward, including pseudo-random binary sequence generation. The output modules within each mainframe are user-retrofittable, which allows configuration changes without returning the mainframe to the factory. Dual-channel instruments can be configured with channel addition — analog summing on the 81101A/81104A/81110A modules, and EXOR digital combination on the 81130A modules — to create multi-level signals or higher effective data rates from a single instrument.

Each pre-owned 81100-family model below links to its own product page with condition-matched pricing and configuration. Mainframes and output modules are listed separately where applicable, and the compatibility constraint of matching module types within a dual-channel mainframe applies to all configurations.

The 81110A specifically occupies the 165–330 MHz tier in the 81100 family. It is the configuration of choice when the application requires pattern mode operation above 80 MHz with sub-nanosecond timing resolution, but where the 400/660 MHz data-generator architecture of the 81130A is not required. The 81110A retains variable pulse parameters in both pulse and pattern mode, which the 81130A does not.

The primary differences across the 81100 family are frequency range, channel count, timing resolution, and output module voltage. The 81101A is the entry tier at 50 MHz with a single fixed channel and 10 V amplitude. The 81104A extends to 80 MHz with one or two channels at 10 V. The 81110A reaches 165 MHz with the 81111A module (10 V, variable transitions) or 330 MHz with the 81112A module (3.8 V differential, selectable 800 ps or 1.6 ns transitions).

The 81101A, 81104A, and 81110A all support dropout-free and glitch-free timing changes; the 81130A does not. The 81130A trades this for higher-frequency operation, deeper pattern memory with sequencing and looping, and four selectable output formats (RZ, NRZ, DNRZ, R1). For applications requiring smooth parameter sweeps during measurement, the 81101A/81104A/81110A are the appropriate choice. For applications requiring the highest data rates and most complex pattern structures, the 81130A is appropriate.

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

Accessories Supplied

• Reference Guide (811xx-91021)

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.