Which model in the series supports lower frequency measurements?

The R3365 supports measurements down to 100 Hz, whereas the R3365A frequency range starts at 9 kHz.

What are the primary interface differences between the R3365 and R3365A?

The R3365 is equipped with a GPIB interface and memory card slot, while the R3365A features an integrated BASIC controller as standard alongside its memory card function.

What is the maximum safe RF input level for the R3365A?

The maximum safe input level for the R3365A is +30 dBm RF power.

Advantest R3365 Series Spectrum Analyzers

2 models with full specifications from Advantest.

The Advantest R3365 series consists of EMI-adapted microwave spectrum analyzers engineered for electromagnetic interference testing and high-frequency spectral analysis. Comprising the R3365 and R3365A, this family is designed for engineers requiring detailed signal analysis up to 8 GHz. While both instruments share fundamental capabilities, they differ in their physical profiles, display technologies, base frequencies, and control interfaces, making each model suited to distinct workflow and laboratory setups.

Frequency Range: 100 Hz to 8 GHz (R3365) / 9 kHz to 8 GHz (R3365A)
Resolution Bandwidth (RBW): 10 Hz to 3 MHz
Video Bandwidth (VBW): 1 Hz to 3 MHz
Operating Temperature Range: 0 to +50 °C

Models in this series

Model	Type	Detector Modes	Dimensions (W×H×D)	Display
R3365A	*misc	Normal, Positive Peak, Negative Peak, Sample, Quasi-Peak (QP)	424 mm × 177 mm × 450 mm	6-inch Color CRT
R3365	Portable	Peak, Quasi-Peak, Average	350 x 177 x 420	Color TFT LCD

Shared Capabilities and EMI Adaptation

Both models in the R3365 series are tailored for electromagnetic interference (EMI) investigations and general microwave spectral analysis. They share a maximum frequency limit of 8 GHz, a resolution bandwidth (RBW) range from 10 Hz to 3 MHz, and a video bandwidth (VBW) range from 1 Hz to 3 MHz. Each analyzer includes memory card support to facilitate data storage and transfer. Additionally, both systems are designed to operate reliably in ambient temperatures ranging from 0 to 50 °C and utilize automatic selection for AC power supplies across 100 to 120 VAC and 220 to 240 VAC ranges.

Distinguishing the R3365 and R3365A

The primary differences between the two units lie in their physical construction, displays, frequency ranges, and built-in features:

Frequency Coverage: The R3365 offers a broader range, measuring from 100 Hz up to 8 GHz. In contrast, the R3365A measures from 9 kHz to 8 GHz.
Display Technology: The R3365 is equipped with a modern Color TFT LCD. The R3365A utilizes a classic 6-inch Color CRT display.
Physical Dimensions and Weight: The R3365 is a more compact and lightweight portable option, weighing 17 kg with dimensions of 350 mm x 177 mm x 420 mm. The R3365A is heavier at 22 kg and measures 424 mm x 177 mm x 450 mm.
Power Consumption: The R3365 consumes less power, rated at 200 VA or less, compared to the R3365A which is rated at 300 VA or less.
Integration and Control: The R3365 features a GPIB interface and integrated AM/FM demodulation. The R3365A comes standard with an integrated BASIC controller, 50 Ω RF input impedance with an N-type female connector, and an input attenuator range of 0 to 70 dB in 10 dB steps.

Frequently asked questions

Which model in the series supports lower frequency measurements?: The R3365 supports measurements down to 100 Hz, whereas the R3365A frequency range starts at 9 kHz.
What are the primary interface differences between the R3365 and R3365A?: The R3365 is equipped with a GPIB interface and memory card slot, while the R3365A features an integrated BASIC controller as standard alongside its memory card function.
What is the maximum safe RF input level for the R3365A?: The maximum safe input level for the R3365A is +30 dBm RF power.