The Agilent N1911A and N1912A are P-Series peak power meters paired with the N1921A and N1922A P-Series wideband power sensors. Each meter is an LXI Class-C-compliant instrument developed using LXI (LAN eXtension for Instrumentation) technology, which uses Ethernet (LAN) as its primary communication interface. An integrated Web browser provides a convenient way to configure the instrument's functionality. The N1911A is a single-channel meter and the N1912A is a dual-channel meter, while the N1921A and N1922A wideband sensors cover frequency ranges of 50 MHz to 18 GHz and 50 MHz to 40 GHz respectively.

A power meter and sensor combination measures the power level of an RF or microwave signal — one of the most fundamental quantities characterized on a high-frequency test bench. This combination provides average, peak, and peak-to-average ratio power measurements with both free-run and time-gated definitions. It also performs time-parameter measurements, including pulse rise time, fall time, pulse width, time-to-positive occurrence, and time-to-negative occurrence.

ValueTronics stocks and holds its own inventory in a 20,000-square-foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. 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. This combination of held inventory and in-house verification lets engineers source the right P-Series instrument with confidence in its condition.

Brand Heritage

Agilent Technologies was established in 1999 as a spin-off of Hewlett-Packard's test and measurement business. In 2014, that test and measurement operation was separated again to form Keysight Technologies, which carries the lineage forward today.

Compare Other Models in This Series

The P-Series family pairs peak power meters with wideband power sensors. The meter is offered in two configurations — the single-channel N1911A and the dual-channel N1912A — and both are LXI Class-C-compliant instruments that use Ethernet (LAN) as their primary communication interface. The wideband sensors, the N1921A and N1922A, attach to either meter to form a complete measurement system.

Across the family, the meters share the same core measurement architecture — average, peak, and peak-to-average ratio power, plus pulse time-parameter measurements — and the same 100 Msamples/sec continuous sampling. The models differ primarily in channel count on the meter side and in frequency coverage and connector type on the sensor side, as the comparison table details.

Each model below links to its own dedicated product page with condition-matched pricing for the pre-owned unit you select. Choose the meter channel count and the sensor frequency range that match your application, and review each model's page for its specific configuration.

On the meter side, the N1911A is a single-channel peak power meter while the N1912A is a dual-channel peak power meter; the dual-channel unit also carries a higher power requirement, not exceeding 75 VA (50 W) versus 50 VA (30 W) for the single-channel meter.

On the sensor side, the N1921A covers 50 MHz to 18 GHz with a Type N (m) connector and an average power measurement accuracy of ≤ ± 0.2 dB or ± 4.5 %, while the N1922A extends coverage to 50 MHz to 40 GHz with a 2.4 mm (m) connector and an accuracy of ≤ ± 0.3 dB or ± 6.7 %. Both sensors share the same –35 dBm to +20 dBm dynamic range above 500 MHz and the same damage levels. See the comparison table for the full breakdown.

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

Product Core & Specifications

Important: Maximum trigger voltage input: 15 V emf from 50 Ω dc (current < 100 mA), or 60 V emf from 50 Ω (pulse width < 1 s, current < 100 mA).

Important: A P-Series wideband power sensor (N1921A or N1922A) is required to make power measurements; the sensor is ordered separately and is not included in the N1911A/N1912A power meter's standard-shipped accessories.

Important: The P-Series wideband power sensors are designed for use with the P-Series power meters only.

Important: The 1 mW power reference is provided for calibration of E-Series, 8480 Series and N8480 Series sensors. The P-Series sensors are automatically calibrated and therefore do not need this reference for calibration.

Important: Although the rise time specification is ≤ 13 ns, this does not mean the P-Series meter and sensor combination can accurately measure a signal with a known rise time of 13 ns; the measured rise time is the root sum of the squares (RSS) of the signal-under-test rise time and the 13 ns system rise time.

Important: The Off video bandwidth setting provides the warranted rise time and fall time specification and is the recommended setting for minimizing overshoot on pulse signals. For Option 107 (10 m cable), add 5 ns to the rise time and fall time specifications.

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.