Advantest R3361 Series Spectrum Analyzers
3 models with full specifications from Advantest.
The Advantest R3361 Series consists of portable 2.6 GHz spectrum analyzers designed for RF and microwave analysis. Built on a common design framework, the series includes the Advantest R3361A, Advantest R3361B, and Advantest R3361C. These instruments integrate a tracking generator and a CRT display, making them suited for swept frequency measurements, filter characterization, and general RF testing. While sharing core performance attributes like a 30 Hz to 1 MHz resolution bandwidth, individual models differ in input impedance, tracking generator output parameters, physical size, and specialized options. This page covers the configuration differences across the series to help engineers select the correct instrument.
- Frequency Range
- 9 kHz to 2.6 GHz
- Resolution Bandwidth
- 30 Hz to 1 MHz
- Video Bandwidth
- 1 Hz to 1 MHz
- Standard Interface
- GPIB
Models in this series
| Model | Type | Dimensions (W×H×D) | Display | Frequency Range |
|---|---|---|---|---|
| R3361A | Portable | 300 mm × 177 mm × 450 mm | Monochrome CRT | 9 Hz to 2.6 GHz (with Option 21; standard range 9 kHz to 2.6 GHz) |
| R3361C | Portable | 325 mm × 177 mm × 450 mm | CRT (80 dB dynamic display range) | 9 kHz to 2.6 GHz |
| R3361B | Advantest | 330 mm × 177 mm × 450 mm | CRT | 9 kHz to 2.6 GHz |
Common RF Measurement Architecture
Each model in the Advantest R3361 series shares a frequency range spanning from 9 kHz up to 2.6 GHz. The standard system includes a built-in tracking generator for stimulus-response measurements and a resolution bandwidth (RBW) spanning 30 Hz to 1 MHz in a 1-3 sequence. Video bandwidth (VBW) is adjustable from 1 Hz to 1 MHz in a 1-10 sequence. All three models feature CRT displays with an 80 dB display dynamic range, 1 Hz frequency resolution capabilities, and standard GPIB interfaces for automated test system integration.
Impedance and Connector Variations
The primary differentiator within the family is system impedance. The Advantest R3361A and Advantest R3361C are 50-ohm instruments. The Advantest R3361C is equipped with standard Type-N female RF input and output connectors. Conversely, the Advantest R3361B is configured specifically for 75-ohm applications, making it suitable for CATV and television broadcast testing. The Advantest R3361B utilizes 75-ohm NC female RF connectors for both its main input and its tracking generator output.
Model Specific Capabilities and Dimensions
The models also diverge in physical construction and auxiliary features. The Advantest R3361A is the lightest at 15 kg, with a narrower chassis width of 300 mm, and features an integrated memory card slot. It is also the only model capable of extending its lower frequency limit down to 9 Hz when configured with Option 21. The Advantest R3361B and Advantest R3361C both weigh 17 kg, but differ in width (330 mm and 325 mm respectively). Additionally, tracking generator output levels differ: the 50-ohm Advantest R3361C provides an output range of 0 to -10 dBm with 0.1 dB resolution, while the 75-ohm Advantest R3361B outputs levels from +55 to +105 dBuV in 1 dB steps.
Frequently asked questions
- Which model in the series supports 75-ohm systems?
- The Advantest R3361B is designed specifically for 75-ohm systems, featuring 75-ohm NC female input and tracking generator output connectors.
- Can the Advantest R3361 series measure signals below 9 kHz?
- Yes, the Advantest R3361A can cover a frequency range down to 9 Hz when equipped with Option 21. The standard range for all models is 9 kHz to 2.6 GHz.
- What are the tracking generator specifications for the Advantest R3361C?
- The Advantest R3361C features a built-in 50-ohm tracking generator spanning 9 kHz to 2.6 GHz, with an output level range of 0 to -10 dBm and a 0.1 dB resolution, using an N-type female connector.