Discover Our Range of Spectrum Analysers
Spectrum Analysers – Precision Tools for RF and Telecommunications
At Electrotest, we provide high-quality spectrum analysers for engineers, technicians, and professionals across New Zealand. Spectrum analysers are essential instruments for monitoring and analysing radio frequency (RF) signals, ensuring accurate performance assessment of electronic and telecommunications systems.Â
Whether you need a portable analyser for field troubleshooting or a desktop unit for lab and production testing, our comprehensive range meets the demands of any application. Explore our products or contact our team for expert guidance tailored to your needs.
What is a Spectrum Analyser?
A spectrum analyser is a device that measures the magnitude of an input signal versus frequency across a specified range. Unlike an oscilloscope, which displays amplitude over time, a spectrum analyser displays signal amplitude over frequency, providing crucial insight into signal behaviour, interference, and performance.
In telecommunications and electronics, spectrum analysers are used for:
- Telecommunications: Evaluating the performance of wireless networks and RF components.
- RF and Microwave Engineering: Designing, testing, and troubleshooting RF circuits and devices.
- Production Testing: Ensuring electronic devices meet performance and quality standards.
- Field Service: Detecting and resolving network issues on-site.
Electrotest offers a full selection of spectrum analysers, including portable units for field work and high-performance desktop instruments for lab and production environments, ensuring professionals have reliable tools for accurate measurements.
How to Choose a Spectrum Analyser
Selecting the right spectrum analyser depends on several key factors:
Frequency Range
Choose an analyser that covers the full range of frequencies you intend to measure. Wi-Fi, RF, and microwave signals all require different ranges.
Resolution Bandwidth (RBW)
RBW determines the ability to distinguish closely spaced signals. Narrower RBW improves frequency resolution, helping you identify small differences between signals.
Dynamic Range
A wide dynamic range allows measurement of both strong and weak signals simultaneously, which is critical for accurate signal analysis.
Phase Noise
Lower phase noise ensures the analyser’s oscillator is stable, improving accuracy for high-frequency measurements.
Portable vs. Desktop
- Portable Spectrum Analysers are lightweight, battery-powered, and ideal for field troubleshooting, interference hunting, and network installation.
- Desktop Spectrum Analysers offer higher performance, more features, and wider frequency ranges, ideal for lab and production environments.
Budget Considerations
Spectrum analysers range from a few thousand dollars to tens of thousands. Balance performance requirements with budget constraints. Electrotest offers financing options to make professional-grade analysers accessible.
Why Choose Electrotest?
Local NZ Expertise
As a New Zealand-owned company, we understand the local telecommunications and electronics industry, providing personalised advice for your measurement needs.
Comprehensive Support & Service
We offer training, calibration, support and service, and after-sales support to ensure your spectrum analyser delivers accurate, reliable results.
Wide Product Range
From portable to desktop models, we stock spectrum analysers from leading brands to suit any application.
Expert Guidance & Training
Our engineers help you select the right analyser, and our courses keep your team up-to-date with the latest RF testing techniques.
Flexible Financing
Finance options are available to make acquiring high-quality instruments easier.
Frequently Asked Questions
An oscilloscope shows signal amplitude over time (time domain), while a spectrum analyser shows amplitude over frequency (frequency domain). Both are essential but provide different insights.
Choose a range that covers the signals you plan to measure. For example, Wi-Fi requires 2.4 GHz and 5 GHz coverage. Our team can help determine the right range.
Yes, we provide IANZ-accredited calibration to ensure accuracy. Learn more.
Yes, rental and leasing options are available for short-term projects. Request a quote.
We provide courses from beginner to advanced levels. View training schedule.
All new analysers include the manufacturer’s warranty. Check product pages for details.
Contact our support team by phone or email for expert assistance.
We stock leading brands including Anritsu, Keysight, Rohde & Schwarz, and more. See all brands.