Spectrum Analyzers - Benchtop

Spectrum Analyzers – Benchtop Instruments for precise RF Signal Analysis in the Lab

Benchtop spectrum analyzers deliver reproducible results for development, verification, and troubleshooting. The instruments provide immediate insight into interference, signal purity, and standards compliance. Key parameters such as frequency range, RBW (resolution bandwidth), DANL/dynamic range, and phase noise define measurement performance. Real-time spectrum analysis with trigger and mask tests reliably and accurately captures intermittent events.

Here you will find details on the technology and selection as well as answers to frequently asked questions.

What to know about Spectrum Analyzers

Benchtop spectrum analyzers combine sensitive RF front ends with digital signal processing and, depending on the model, cover frequency ranges from the kilohertz range up into multiple gigahertz.

The instruments support standardized IF bandwidths and detectors (e.g., per CISPR) for reproducible, standards-compliant results and can be automated seamlessly in lab workflows via LAN/USB and SCPI. Below you will find the technical focus areas, selection criteria, and FAQs to help you choose the right instrument.

Typical Applications

• EMC pre-compliance for fast design checks
• Modulation analysis (AM/FM/IQ) and spectrum monitoring
• Verification of radio and IoT modules, amplifiers, oscillators
• Troubleshooting in the lab, in the shielded chamber, and at the test station

Functions & Features

• Real-time and classic sweep operation with marker/trace tools
• Options: tracking generator, preamplifier, preselector
• Integration into automated setups via LAN/USB and SCPI
• Clear, structured UIs for fast results

Your Benefits

• Shorter debug cycles
• Consistent measurement results across series and batches
• Seamless integration into existing test benches

Integration in Lab and System

Control the benchtop instrument from scripts or a test sequencer via LAN/USB and SCPI. In combination with tracking generators, characterize filters and amplifiers in sweep mode and document results reproducibly.

What Matters when Choosing?

• Frequency range: matched to the application (e.g., ISM bands, cellular, RF front end)
• RBW & real-time bandwidth: resolution for narrow signals and capture of short-duration events; RBW affects sweep time.
• DANL/dynamic range & phase noise: sensitivity for low-level signals and clean carriers
• Options & interfaces: tracking generator, preamplifier, LAN/USB, SCPI

FAQs – Spectrum Analyzers (Benchtop)

What do I use a spectrum analyzer for?

To display signal amplitude versus frequency: the analyzer identifies interferers, spurious emissions, and modulation artifacts and checks compliance with specifications.

Which parameters are critical?

• Frequency range
• RBW (resolution bandwidth)
• DANL/dynamic range
• Phase noise

These factors determine resolution, sensitivity, and measurement accuracy.

Do I need real-time spectrum analysis?

Yes, if sporadic or very short events must be captured reliably: high probability of intercept (POI), fast pass/fail using frequency masks, and accelerated troubleshooting through triggering, freezing, and logging.

How are RBW, VBW, and sweep time related?

Small RBW increases selectivity but extends sweep time over the frequency span. Small VBW reduces display noise and makes weak signals more visible; frequency resolution remains unchanged. Many instruments compute the optimal sweep time automatically from span and RBW.

Which detectors do I need for EMC pre-compliance?

• Peak (PK) for fast search
• Quasi-Peak (QP, CISPR 16-1-1) for a standards-oriented assessment
• Average (AVG) for continuous signals
• RMS-Average (CISPR RMS) depending on workflow/standard

Looking for the right model? Speak with our specialists and receive a non-binding quote for your application!