# Keysight N5231B PNA-L Network Analyzer 300 kHz to 13.5 GHz (Pre-Owned) # Keysight N5231B PNA-L Network Analyzer 300 kHz to 13.5 GHz (Pre-Owned) ## Key Features At A Glance - PNA-L vector network analyzers spanning 300 kHz to 8.5, 13.5, or 20 GHz across the N5239B, N5231B, and N5232B models - Available in 2-port (all models) or 4-port (N5231B and N5232B) test-set configurations - 3.5 mm (male), 50 Ω nominal test port connectors - Standard GPIB (IEEE-488), LAN Ethernet, USB, Handler I/O, and Test Set I/O for automated test systems - 31 cm (12.1 in) color active-matrix LCD at 1280 × 800 resolution - Optional extended power range via source attenuators and front-panel jumpers (Options 216 and 416) - System IF bandwidth range of 1 Hz to 15 MHz (nominal) - 1 Hz frequency resolution with ±1 ppm frequency accuracy 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. Model Frequency Range Port Configurations Maximum Settable Power **N5231B** 300 kHz to 13.5 GHz 2-port or 4-port (Option 200/216/400/416) 30 dB N5239B 300 kHz to 8.5 GHz 2-port (Option 200/216) 30 dB N5232B 300 kHz to 20 GHz 2-port or 4-port (Option 200/216/400/416) 30 dB 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 Specification Value Frequency Range N5231B Frequency Range 300 kHz to 13.5 GHz System Dynamic Range (dB), Options 200 / 216, Test Port - Specification 300 kHz to 3 MHz 105 / 104 3 MHz to 10 MHz 115 / 114 10 MHz to 500 MHz 131 / 129 500 MHz to 2 GHz 133 / 131 2 GHz to 6 GHz 133 / 131 6 GHz to 8.5 GHz 133 / 131 8.5 GHz to 10.5 GHz 128 / 126 10.5 GHz to 12.5 GHz 127 / 125 12.5 GHz to 13.51 GHz 125 / 122 System Dynamic Range (dB), Options 400 / 416, Test Port - Specification 300 kHz to 3 MHz 102 / 101 3 MHz to 10 MHz 112 / 111 10 MHz to 500 MHz 128 / 128 500 MHz to 4 GHz 128 / 128 4 GHz to 6 GHz 127 / 126 6 GHz to 8.5 GHz 124 / 122 8.5 GHz to 10.5 GHz 122 / 120 10.5 GHz to 12.5 GHz 118 / 116 12.5 GHz to 13.51 GHz 118 / 106 Maximum Leveled Power (dBm), Options 200 / 216 - Specification 300 kHz to 10 MHz 10 / 9 10 MHz to 500 MHz 13 / 11 500 MHz to 6 GHz 13 / 11 6 GHz to 8.5 GHz 13 / 11 8.5 GHz to 12.5 GHz 10 / 8 12.5 GHz to 13.5 GHz 8 / 5 Maximum Leveled Power (dBm), Options 400 / 416 - Specification 300 kHz to 10 MHz 7 / 6 10 MHz to 4 GHz 8 / 8 4 GHz to 6 GHz 7 / 6 6 GHz to 10.5 GHz 4 / 2 10.5 GHz to 13.5 GHz 1 / -1 Test Port Noise Floor (dBm) @ 10 Hz IFBW, Options 200,216 / 400,416 - Specification 300 kHz to 3 MHz \-95 / -95 3 MHz to 10 MHz \-105 / -105 10 MHz to 500 MHz \-118 / -120 500 MHz to 2 GHz \-120 / -120 2 GHz to 4 GHz \-120 / -120 4 GHz to 8.5 GHz \-120 / -120 8.5 GHz to 10.5 GHz \-118 / -118 10.5 GHz to 13.51 GHz \-117 / -117 2nd and 3rd Harmonics at Max Specified Power (dBc), Options 200,216 / 400,416 - Typical 600 kHz to 500 MHz \-15 / -18 500 MHz to 1 GHz \-17 / -18 1 GHz to 3 GHz \-17 / -17 3 GHz to 4 GHz \-17 / -25 4 GHz to 8.5 GHz \-18 / -25 8.5 GHz to 13.5 GHz \-18 / -25 > **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.** ## Details - **Price:** 0.0 USD - **Vendor:** Keysight - **Type:** Net Ana - **Tags:** product_manual_group_3 ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 0.00 USD | In stock | ## Images - Keysight N5231B PNA-L Network Analyzer 300 kHz to 13.5 GHz (Pre-Owned) --- > Source: [ValueTronics](https://valuetronics.com/products/n5231b-keysight-network-analyzer-used) > Updated: 2026-06-20