# Keysight P9373A 300 kHz to 14 GHz USB Vector Network Analyzer (Pre-Owned) # Keysight P9373A 300 kHz to 14 GHz USB Vector Network Analyzer (Pre-Owned) ## Key Features At A Glance - Full two-port USB vector network analyzer in a compact 1.90 kg chassis, controlled by an external Windows PC - Frequency coverage from 300 kHz up to 26.5 GHz across the six-model series - Extendable to a 4-port configuration with optional S97551B multiport software (separate license) - Frequency and software upgrades available at any time - Common GUI and measurement science shared with Keysight benchtop VNAs - Supports Electronic Calibration (ECal) modules for quick calibration - USB 3.0 connection to the host PC for PC-based control and automation The Keysight P937xA is Keysight's first compact, full two-port USB vector network analyzer in the Streamline Series. It is an affordable VNA that dramatically reduces the size of test: the measurement hardware lives in a small chassis and is controlled by an external computer, with firmware that presents the same intuitive GUI used across other Keysight VNAs to reduce switching cost between models. The series provides wide frequency coverage with six frequency breaks, operating from 300 kHz up to 26.5 GHz depending on model. Within its stated applications, the P937xA is used for manual test of passive components such as antennas, filters, cables, connectors, and adaptors. It also serves wireless component manufacturing test and aerospace/defense manufacturing test. Because the measurement chassis is compact and controlled by an external PC, it is also positioned for evaluation and design validation in classified environments. ValueTronics stocks and holds its own inventory in a 20,000 square-foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Every used unit is inspected and functionally verified in-house before it ships, while new units leave factory-sealed exactly as received from the manufacturer. Keeping inventory under our own roof lets our Test Architects confirm availability and condition directly, so you know what you are getting before you order. ## Brand Heritage Keysight Technologies traces its test-and-measurement lineage to Hewlett-Packard, whose instrument business was spun out as Agilent Technologies in 1999. Agilent's electronic measurement business then became Keysight Technologies in 2014, the brand under which this product is offered today. ## Compare Other Models in This Series The P937xA Streamline Series is Keysight's first compact vector network analyzer family: a set of affordable, full two-port USB VNAs packaged in a small chassis and controlled by an external computer. Every model shares the same measurement science as Keysight's benchtop VNAs and the same intuitive firmware GUI, so moving between models keeps the user experience consistent. The six models differ principally in frequency coverage, all starting at 300 kHz and reaching a different upper limit. Across the family the units share a common compact form factor, USB control, support for Electronic Calibration (ECal) modules, and the ability to extend to a 4-port configuration with optional S97551B multiport software. Each pre-owned model below is its own dedicated product page with condition-matched pricing. Select the model whose frequency coverage matches your application, then choose the listing that fits your budget and timeline. The models are distinguished by their upper frequency limit: the P9370A covers 300 kHz to 4.5 GHz, the P9371A to 6.5 GHz, the P9372A to 9 GHz, the P9373A to 14 GHz, the P9374A to 20 GHz, and the P9375A to 26.5 GHz. Frequency resolution and the noise-floor/dynamic-range figures published in the specification tables also vary by frequency band, so a higher-frequency model simply extends coverage rather than changing the core architecture. Typical measurement cycle times shift slightly by model as the swept span widens, as shown in the measurement-speed tables. The comparison table below summarizes these per-model frequency and performance differences so you can match the right model to your highest measurement frequency. Model Frequency Range Test Ports Test Port Connector **P9373A** 300 kHz to 14 GHz 2 (expandable to 4-port) 3.5 mm female P9370A 300 kHz to 4.5 GHz 2 (expandable to 4-port) 3.5 mm female P9371A 300 kHz to 6.5 GHz 2 (expandable to 4-port) 3.5 mm female P9372A 300 kHz to 9 GHz 2 (expandable to 4-port) 3.5 mm female Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below. ## Product Core & Specifications Specification Value Frequency Range (by model) P9370A 300 kHz to 4.5 GHz P9371A 300 kHz to 6.5 GHz P9372A 300 kHz to 9 GHz P9373A 300 kHz to 14 GHz P9374A 300 kHz to 20 GHz P9375A 300 kHz to 26.5 GHz Frequency Resolution 300 kHz to 2.5 GHz 1 Hz \> 2.5 to 5 GHz 2 Hz \> 5 to 10 GHz 3 Hz \> 10 to 20 GHz 6 Hz \> 20 GHz 12 Hz Frequency Reference Accuracy ± 1 ppm Aging rate < 3.5 ppm/year Temperature stability ± 1 ppm over 0 to 55 ºC System impedance 50 Ω (nominal); 75 Ω with appropriate adapter and calibration kit Noise Floor and Dynamic Range Frequency Range Noise Floor, dBm (spec.) Dynamic Range, dB (spec.) Dynamic Range, dB (typ.) Effective Dynamic Range, dB (char.) 300 kHz to < 10 MHz — — 111 97 10 to < 250 MHz –98 98 110 95 250 MHz to 1 GHz –108 115 122 114 \> 1 to 4.5 GHz –108 115 122 115 \> 4.5 to 6.5 GHz –108 115 122 115 \> 6.5 to 9 GHz –108 114 121 114 \> 9 to 14 GHz –108 114 120 110 \> 14 to 18 GHz –108 112 119 100 \> 18 to 20 GHz –108 110 118 98 \> 20 to 24 GHz –98 95 104 82 \> 24 to 26.5 GHz — — 95 65 Corrected Error Terms with N4691B ECal Module (dB), 300 kHz to 24 GHz 300 kHz to < 2 MHz 31 29 29 ±0.21 ±1.4 ±0.12 ±0.74 2 MHz to 1 GHz 41 36 41 ±0.021 ±0.14 ±0.061 ±0.40 \> 1 to 2 GHz 52 47 52 ±0.0066 ±0.044 ±0.020 ±0.14 \> 2 to 4.5 GHz 48 45 48 ±0.015 ±0.095 ±0.031 ±0.20 \> 4.5 to 6.5 GHz 48 45 48 ±0.020 ±0.14 ±0.031 ±0.20 \> 6.5 to 9 GHz 48 45 45 ±0.033 ±0.22 ±0.031 ±0.20 \> 9 to 14 GHz 46 42 43 ±0.053 ±0.35 ±0.041 ±0.27 \> 14 to 20 GHz 46 42 42 ±0.067 ±0.44 ±0.041 ±0.27 \> 20 to 24 GHz 44 40 40 ±0.11 ±0.69 ±0.051 ±0.34 > **Important:** Test port input damage level: > +20 dBm, > ±35 VDC, > 1000 V ESD. > **Important:** The P937xA is a USB-controlled VNA that is packaged in a compact chassis and controlled by an external computer; a host PC meeting the System Requirements (Windows 10/11 64-bit, Intel Core i7, 4 GB minimum / 16 GB recommended memory, USB 3.0) is required and is not part of the instrument. > **Important:** Corrected (calibrated) measurements require an appropriate calibration kit — such as the N4691B Electronic Calibration Module or the 85052D Standard Mechanical 3.5 mm Calibration Kit — which is used to characterize the instrument; specified corrected performance is stated only with these kits. > **Important:** Multiport (up to 4-port) operation requires the S97551B software and a second P937xA instrument; configurations of up to two instruments with four test ports have been demonstrated, and multiport setups are not tested as a multi-port instrument in the factory. > **Important:** 75 Ω system impedance requires an appropriate adapter and calibration kit; the instrument's nominal system impedance is 50 Ω. ## 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:** Agilent, Agilent Keysight, Analyzers, Manufacturers, Network, product_manual_group_3, Product_used ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 0.00 USD | In stock | ## Images - Keysight P9373A 300 kHz to 14 GHz USB Vector Network Analyzer (Pre-Owned) --- > Source: [ValueTronics](https://valuetronics.com/products/p9373a-agilent-network-analyzer-used) > Updated: 2026-06-20