The Keysight N5239B, N5231B, and N5232B are PNA-L Series vector network analyzers offered in 2-port and 4-port configurations. The N5239B covers 300 kHz to 8.5 GHz, the N5231B covers 300 kHz to 13.5 GHz, and the N5232B covers 300 kHz to 20 GHz, with 4-port test sets available on the N5231B and N5232B. Each model is configured through a base test-set option (Option 200 for 2-port, Option 400 for 4-port) or an extended-power-range option (Option 216 or 416) that adds front-panel jumpers and source attenuators.

A network analyzer measures the magnitude and phase response of components and devices as a function of frequency, characterizing reflection and transmission behavior through S-parameters. These instruments support reflection (Sii) and transmission (Sij) measurements along with group delay, which is computed from the phase change within a specified frequency aperture. In segment sweep mode the analyzer can output a higher power level on predefined frequency segments for devices with high insertion loss, and reduced power where the maximum receiver input level would otherwise be reached.

ValueTronics supports the PNA-L Series from its own 20,000-square-foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois, where we stock and hold our inventory on hand. Every pre-owned unit is inspected and functionally verified in-house before it ships, while new units ship factory-sealed exactly as received from the manufacturer.

Brand Heritage

Keysight Technologies carries forward a test-and-measurement lineage that began at Hewlett-Packard. HP's instrument business was spun off as Agilent Technologies in 1999, and Agilent's electronic measurement business became Keysight Technologies in 2014.

Compare Other Models in This Series

The PNA-L Series comprises three models — the N5239B, N5231B, and N5232B — that share a common vector-network-analyzer architecture and differ primarily in upper frequency limit. All three are offered as 2-port instruments, and the N5231B and N5232B are additionally available as 4-port instruments.

Each model is ordered with a base test-set option (Option 200 for 2-port, Option 400 for 4-port) or an extended-power-range option (Option 216 or 416) that adds front-panel jumpers and source attenuators. These options determine the available power range, direct receiver access, and front-panel jumper configuration.

Each pre-owned model linked below is its own dedicated product page with condition-matched pricing. Select the frequency coverage and port count your application requires, then choose the pre-owned unit that fits your budget and timeline.

The three models are separated by maximum frequency: the N5239B reaches 8.5 GHz, the N5231B 13.5 GHz, and the N5232B 20 GHz, all starting at 300 kHz. Port count is the second axis — a 2-port test set is available across the family, while 4-port test sets are exclusive to the N5231B and N5232B.

Within each model, option suffixes set the power and access configuration: Options 200 and 400 are base 2-port and 4-port test sets, while Options 216 and 416 add source attenuators and front-panel jumpers for extended power range and direct receiver access. Refer to the comparison table for per-model frequency, port, and option details.

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

Accessories Supplied

• Bottom feet
• Handles
• Front and rear panel hardware

Product Core & Specifications

Important: All specifications and characteristics apply over a 25 °C ±5 °C range (unless otherwise stated) and 90 minutes after the instrument has been turned on.

Important: The 4-port base model and the 4-port extended power range configuration (Options 400 and 416) are available only on the N5231B and N5232B; the N5239B is offered as a 2-port model only (Options 200 and 216).

Important: Front-panel jumpers and source attenuators (extended power range) are provided only with Options 216 and 416.

Recommended pairing: the 85052B mechanical calibration kit, the N4691B 2-port electronic calibration module, or the N4433A 4-port electronic calibration module specified for use with these analyzers.

About this Pre-Owned unit

This pre-owned unit is inspected and functionally verified in-house before it ships and is backed by our pre-owned warranty. To confirm its exact condition, firmware revision, installed options, or included accessories for your application before ordering, contact our Test Architects.

• 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).

ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application.

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.