Digital signal analysers
The Digital Signal Analysers category groups together instruments dedicated to the observation and analysis of digital communications within electronic systems. It includes logic analysers, protocol decoders and mixed platforms for correlating digital and analogue signals.
These devices capture fast transitions and decode protocols such as SPI, I²C, UART, CAN, LIN, USB, Ethernet or PCIe. In R&D, they are essential for validating communication sequences, checking that timings are respected and identifying synchronisation or logic errors. During integration, they facilitate the fine-tuning of exchanges between microcontrollers, FPGAs, sensors and peripherals.
In production and maintenance, digital signal analysers enable rapid diagnosis of intermittent faults and verification of functional compliance. Advanced triggering, deep memory and real-time decoding functions isolate critical events precisely.
Thanks to their USB or LAN interfaces and dedicated analysis software, these instruments can be integrated into automated test benches. Used in industrial electronics, automotive, aeronautics and embedded systems, they help to ensure the reliability of digital communications and the coherence of complex architectures.
MS2830A
ANRITSU
MS2830A serial signal analyser: 9 KHz to 43 GHz, USB/LAN/GP-IB programming.
N9000B-507
KEYSIGHT / AGILENT / HP
CXA signal analyser, 9 KHz to 7.5 GHz, with LAN and GP-IB.
N9000B/513
KEYSIGHT / AGILENT / HP
CXA signal analyser, 9 KHz to 13.6 GHz, with Windows 7.
N9914B
KEYSIGHT / AGILENT / HP
Portable RF analyser 30 KHz to 6.5 GHz, cable and antenna analyser.
2855S
IFR Systems
PDH digital transmission analyser, transmitter and receiver, datacom interface.
PA41
WANDEL & GOLTERMAN
Portable signalling analyser for 2 Mbit/s digital multiplex networks.
4352B
KEYSIGHT / AGILENT / HP
VCO/PLL signal analyser from 10MHz to 3GHz, integrated low phase noise.
4352S
KEYSIGHT / AGILENT / HP
VCO/PLL signal analyser from 10MHz to 3GHz with low phase noise.
SMW200A
ROHDE & SCHWARZ
Digital signal generator from 100 KHz to 44 GHz with advanced modulations.
MS2692A
ANRITSU
Digital signal analyser from 50 Hz to 26.5 GHz with a dynamic range ≥ 177 dB.
3566A
KEYSIGHT / AGILENT / HP
Agilent / HP 3566A signal analyser with wide frequency range.
3330B
KEYSIGHT / AGILENT / HP
High-performance, reliable Keysight 3330B signal analyser.
frequently asked questions about Digital Signal Analysers
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1. How does a digital signal analyser differ from a conventional oscilloscope?An oscilloscope shows waveforms, but does not interpret logic. A digital signal analyser reconstructs logic states, frames and protocols, allowing us to understand what is being exchanged, not just how the signal looks.
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2. When does a logic analyser become essential for software debugging?When a fault cannot be reproduced or explained by code alone. Digital analysers can be used to check whether the actual sequences match the software assumptions, particularly in the event of latency, bus contention or intermittent errors.
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3. Why are numerical errors often difficult to reproduce?Because they depend on transient conditions: marginal timing, load ramp-up, interactions between tasks or asynchronous events. Without synchronised hardware capture, these faults can disappear as soon as an attempt is made to observe them.
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4. How can I avoid disrupting a bus during the measurement?By using suitable probes with a minimum capacitive load and thresholds compatible with the logic under test. An incorrectly chosen probe can alter rise times or cause errors that did not exist before the measurement.
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5. Why correlate digital and analogue signals?Because many logic faults have an analogue origin: power supply noise, ground bounce, crosstalk or clock instability. Correlation enables the physical cause behind a digital symptom to be identified.
