These two new Ethernet rugged chassis allow for time synchronization with TSN to scale synchronized distributed systems - and gets your DAQ system closer to sensors.
Precise synchronization over the network (no wires)
Reliable operation at -40° to 70°C
Shock resistance up to 50g
Vibration resistance up to 5g
Easy daisy chaining through an integrated network switch, allowing quick setup and expansion in distributed applications
Software abstraction that automatically syncs multiple chassis
4 tips for transitioning to a distributed measurement system like this
Tip 1: Divide and conquer with distributed subsystems
Tackle large issues by breaking them up into smaller, manageable pieces. It’s easier to maintain and replace smaller, distributed subsystems that combine data and timing signals into a single industrial network cable for transfer back to the control room.
Shorter sensor cables not only reduce wiring costs, but increase accuracy because they are less exposed to noise. Look for hardware with standard connectivity like Ethernet, which allows for easy setup and increases chance of compatibility with third party instruments.
Tip 2: Leverage the right TSN protocol
Communication is key. Without proper synchronization among your DAQ subsystems, there’s no way to know if two measurements happened simultaneously or if one caused the other.
Time-based synchronization is ideal for most distributed systems. It correlates and synchronizes measurements with absolute timing over long distances with minimal cabling. IEEE 802.1AS, the newest profile of 1588 Precision Time Protocol, uses packet based communication to provide a common notion of time to all nodes on the network.
Tip 3: Minimize disruptive changes to the system
Don’t let new challenges jeopardize your whole relationship. Rising test complexity is demanding more from today’s data acquisition systems. You can minimize disruptive changes with modular, sensor-specific I/O that meets your exact requirements.
This will give you peace of mind knowing that you don’t have to settle for less or get more than you need. And when you’re ready to add new sensors or sample faster, you know you’ll have options to meet those future needs.
Tip 4: Make sure your system can handle harsh operating conditions
You can’t control who you fall in love with...or in some cases where you place your DAQ hardware, even if it means relocating to an unfavorable location. Standard desktop equipment could give inaccurate data or fail entirely in harsh and demanding conditions.
Look for DAQ hardware that can withstand extreme temperatures and high shock and vibration to get accurate results the first time and avoid costly retests. If you’re nervous about what will happen when you’re not around, consider a system with built-in watchdog timer and link redundancy in case of a network failure.