Yokogawa launches fourth generation high speed data acquisition system
Yokogawa Test & Measurement has launched its fourth generation high speed data acquisition system for power systems, automotive and mechatronics.
The SL2000 High-Speed Data Acquisition Unit is part of the ScopeCorder series that combines the functions of a mixed signal oscilloscope and a data acquisition recorder to capture fast signal transients and long-term trends. The rack-based modular system is aimed at R&D, validation, and troubleshooting and is used with a PC. The original SL1000 was launched back in 2007.
The fourth generation architecture, also used by the DL950, uses a central FPGA to manage the dataflow through the system. A separate FPGA on the same chip handles real time mathematical functions such as integration and differentials. The system is controlled by a CPU with a proprietary multicore operating system, says Michael Rietvelt, product manager at Yokogawa.
Over 20 modules provide interfaces to sensors for voltage up to 1000V and current, but also for torque, vibration and temperature, as well as interfaces to CAN, CAN FD and LIN buses. This gives synchronized data measurements at up to 200Msample/s in eight slots, with up to 32 analog channels or 128 digital channels. The memory depth is 8Gpoints but data can be streamed to a PC.
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“The PC controlled with IS8000 software and beside that we think the use case will be 50/50, with our software or with their own software or a system integrations, so we have code in python, LabView and C, and an API to control the interface,” said Rietvelt.
However the power consumption reduction has meant that some of the modules from the SL1000 cannot be used in the latest version. The power consumption is 280VA, 7.5% less than previously.
“In designing the modules we pay a lot of attention to the signal integrity,” said Rietvelt. “We have a mechanical workshop to design the shielding around the input channels and around the modules. We focus on customers that are really working on energy efficiency and we have reduced the power consumption of the mainframe which is why some of the modules are no longer compatible.”
This enables simultaneous measurement and evaluation of temperature, vibration, and other mechanical signals that change relatively slowly as well as mechatronic and other such high-speed control signals at the same time as electrical analysis and control signal evaluation.
There is also an option to save time in post processing that can also trigger on the real time math channels for example eg for difficult features, to differentiate the signal or trigger on energy consumption. There is also a power calculation option to evaluate system behaviour.
Up to five units can be synchronised together in a 19in rack by using optical transceiver modules.
The PC DAQ software tools and system architecture required for the evaluation and testing stages are provided with the SL2000 instrument. There is a library of APIs (free-run DAQ API, trigger DAQ API, and Flash acquisition API) and a LabVIEW driver for acquiring streaming data – all in the form of free software. In addition, there is an included single license of the IS8000 control software, with enhancements of DAQ functions. There are also sample programs for DAQ (Python, C# and VB, etc.) and a Classic Data Viewer (IS8002CDV) for remote access. Software such as a USB driver, TMCTL library and MATLAB WDF access toolbox will follow.
Streaming data from instrument to PC, without buffering or using internal memory is up to 320 MB/s with Flash acquisition or 10Gbps Ethernet, allowing to continuously stream data with speed to 20 MS/s.
The SL2000 is available now, ready for delivery at the end of the second quarter/beginning of the third.
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