Logic analysers
Logic analysers capture, display and analyse digital signals from logic circuits, microcontrollers, FPGAs or communication buses. Unlike an oscilloscope, they simultaneously record several dozen logic channels with a time resolution of up to 100 ps. In R&D, they are used to validate the functionality of digital architectures, detect timing errors and correlate hardware and software events. In production, they are used to test electronic boards and verify serial protocols such as SPI, I²C, UART, CAN, USB and DDR. Modern models offer a memory depth of over 1 Gpt and a sampling frequency of up to 4 GHz. Conditional triggering, clock reconstruction and automatic decoding functions facilitate frame analysis. Connected via USB, LAN or GPIB, logic analysers can be integrated into automated test benches and embedded debugging environments.
Logic analysers are used to understand, validate and optimise the temporal behaviour of digital systems.
1682AD
KEYSIGHT / AGILENT / HP
68-channel colour logic analyser, 1MPts, 200MHz state, 800MHz timing.
1680A
KEYSIGHT / AGILENT / HP
136-channel colour logic analyser with 256Kpts of memory.
1690A
KEYSIGHT / AGILENT / HP
Analyseur logique portable à 136 canaux avec interface intuitive.
1670G
KEYSIGHT / AGILENT / HP
Analyseur logique 136 voies avec écran couleur et connectivité avancée.
1671G
KEYSIGHT / AGILENT / HP
102-channel logic analyser with colour display and advanced connectivity.
1672G
KEYSIGHT / AGILENT / HP
Analyseur logique 68 voies avec écran couleur et connectivité avancée.
1673G
KEYSIGHT / AGILENT / HP
34-channel logic analyser with colour display and programmable GP-IB.
16702B
KEYSIGHT / AGILENT / HP
Colour logic analyser chassis with 12″ TFT screen and 68 channels.
16700B
KEYSIGHT / AGILENT / HP
5-slot logic analyser, up to 1,020 channels, oscilloscope and pattern generation modules.
16910A
KEYSIGHT / AGILENT / HP
16910A 102-channel logic analysis board for 16902A/16903A chassis.
16911A
KEYSIGHT / AGILENT / HP
68-channel logic analysis board for 16902A/16903A chassis.
TLA5204B
TEKTRONIX
136-channel logic analyser, 235MHz state, 2GHz timing, 512kb memory.
1681AD
KEYSIGHT / AGILENT / HP
102-channel logic analyser with TFT colour display and expandable memory.
TLA7M4
TEKTRONIX
TLA analysis board, 136 channels, 2GHz timing, 100MHz state, 512KB memory.
TLA7N4
TEKTRONIX
TLA analysis card, 136 channels, 2GHz timing, 64KB memory with optional 4MB.
TLA7AA3
TEKTRONIX
Analysis module for the TLA700 family with 102 channels and 8GHz timing.
TLA7M2
TEKTRONIX
TLA analysis board, 68 channels, 2GHz timing, 100MHz state, 512KB memory.
concrete questions about Logic Analysers
01
What is the purpose of a logic analyser?A logic analyser records and displays the state of digital lines to analyse the behaviour of a circuit, validate a communication, detect a bug or correlate several signals during hardware or firmware debugging.
02
What's the difference with a digital oscilloscope?The oscilloscope measures analogue levels and their variations.
The logic analyser captures logic levels (high/low) on a large number of channels, with protocol decoding, high memory depth and long-term correlation. It is optimised for digital buses, not analogue waveforms.03
What are the typical uses of digital electronics?Debugging of microcontrollers, FPGAs and ASICs, analysis of SPI / I²C / UART / CAN / USB buses (depending on models), verification of timing sequences, validation of prototypes, correlation between firmware and hardware behaviour, synchronisation tests.
04
What technical criteria should I check before making my choice?The number of channels, sampling frequency, memory depth, protocol compatibility, complex triggering capability, correlation options with an oscilloscope (mixed mode), software stability and decoding quality.
05
Is refurbishing a good idea for a logic analyser?Yes, if the digital chain is tested: integrity of probes, accuracy of timings, acquisition stability, memory depth checked, protocol decoding validated (I²C, SPI, UART, etc.). Reconditioned models are reliable if their input channels and logic thresholds have been checked under real load.
