Core Series: FSMR Microwave Receiver / Spectrum Analyzer
The core positioning of the FSMR series is to provide extremely high precision and high repeatability measurements, with a particular focus on scenarios that demand the highest measurement uncertainty requirements, such as calibration laboratories, metrology departments, and production processes.

Key Differentiator: The FSMR series integrates a high-precision, calibrated signal source (synthesizer). This makes it a standalone measurement system, rather than just an analyzer.

FSMR3: Model with a frequency range up to 3 GHz.

FSMR26: Model with a frequency range up to 26.5 GHz.

FSMR43: Model with a frequency range up to 43.5 GHz.

FSMR50: Model with a frequency range up to 50 GHz.

Core Features and Advantages of the FSMR Series
Two-in-One Integrated System (Receiver + Signal Source):

This is the most fundamental difference compared to the FSW. The FSMR incorporates a high-performance synthesized signal source internally.

Benefit: Eliminates the need for an external signal source to perform measurements that require both a source and a receiver, such as gain, loss, and isolation. This simplifies system connections and improves accuracy and repeatability.

Extremely High Level Measurement Accuracy:

The design goal of the FSMR is to achieve the lowest measurement uncertainty. It undergoes extremely rigorous calibration at the factory, and its power measurement accuracy is an industry benchmark.

Application: Ideal for calibrating other test equipment (such as power sensors, spectrum analyzers) and precisely measuring insertion loss/VSWR of passive components (filters, attenuators, cables).

Built-In Fully Automated Test Programs:

The instrument comes pre-loaded with a wide range of standard measurement programs, for example:

Filter characteristic measurement (passband, stopband, insertion loss, ripple)

Amplifier testing (gain, gain compression, isolation)

Cable and antenna testing (loss, VSWR)

Mixer testing (conversion loss, isolation)

Benefit: Users only need to connect the device under test, select the test item on the touchscreen, and the instrument automatically completes the measurement and generates a report, greatly improving efficiency and reducing operator skill requirements.

Convenient Metrology and Calibration:

As a metrology-grade instrument, the FSMR can be conveniently traced back to national or international standards.
Shenzhen Bao'an District Shajing Fangfengrui Instrument Equipment Business Department is a company integrating electronic instrument sales, test solution provision, pre-sales services, instrument equipment repair, instrument rental, recycling, and metrology.