Check your board's test points before they become a problem
Upload your ODB++ or IPC-D-356 design files and get an instant DFT analysis. The tool checks spacing, accessibility, and coverage — then tells you exactly what to fix. Free, no purchase required.
Automated PCB testpoint analysis in minutes
Most testability problems are invisible until you try to build a fixture. A test point looks fine in your layout — until the probe can't reach it because a capacitor is in the way, or two pads are 0.3 mm too close for reliable contact.
Our DFT analysis tool catches these issues before they cost you time and money. Upload your netlist, select which test points matter, and get a report covering:
Probe spacing
Test points too close together for reliable pogo pin contact
Accessibility
Pads blocked by tall components, connectors, or board edge proximity
Coverage gaps
Critical nets without dedicated test points
Probe type recommendations
Which probe pitch (P100, P75, P50) your spacing requires
DUT dimensions
Board size validation against available fixture bases
Double-sided probing
Whether your design requires probing from both sides (and the cost implications)
Three steps to a testability report
You don't need fixture expertise to use this. The tool walks you through each step.
Upload your netlist
Export an ODB++ or IPC-D-356 file from your ECAD tool — KiCad and Altium both support these formats. We have export guides for ODB++ and IPC-D-356 if you haven't done it before.
Select your test points
The tool displays every test record from your netlist. Filter by net name, reference designator, or board side. Pick the points your test plan needs to reach — you don't have to select everything.
Review your DFT report
The analysis runs immediately. You'll see errors (issues that would prevent a reliable fixture), warnings (things worth addressing), and a summary of your board's test coverage. Download the report as a PDF or carry the results directly into fixture configuration.
A report your whole team can use
The DFT report isn't just a pass/fail score. It breaks down your board's testability into sections your PCB designer, test engineer, and engineering manager can each act on.
DUT features — Board dimensions, test point counts, minimum pad sizes, and spacing detected from your netlist. This section confirms the tool parsed your design correctly and shows the raw numbers.
Net coverage — How many of your board's nets have accessible test points, expressed as a percentage. Functional test fixtures can evaluate some non-accessed nets through indirect measurement, but higher direct coverage means faster diagnosis when something fails.
Probe recommendations — Based on your test point spacing, the report recommends probe types (P100 at 2.54 mm, P75 at 1.9 mm, or P50 at 1.27 mm). Tighter spacing means more expensive probes with shorter lifespans — so you can make informed tradeoffs during layout, not after.
Errors and warnings — The part that matters most. Errors flag issues that would make a fixture unreliable or impossible to manufacture: test points too close, pads under components, mechanical conflicts. Warnings flag situations worth reviewing: marginal spacing, board edge proximity, high-density areas. Each item includes the specific test point and coordinates so your designer knows exactly where to look.
Why we give this away
We build test fixtures. The better your board's DFT, the better your fixture works — and the less back-and-forth during configuration. Catching a spacing issue before you order saves both of us time.
The DFT analysis tool is part of FixturFab Studio, our platform for configuring and ordering fixtures. Running the analysis creates a free account. If the results look good, you can carry them straight into fixture configuration with real-time pricing. If you need to fix things first, the report tells you what and where.
No sales calls. No trial period. The tool works the same whether you ever order a fixture or not.
Common questions about DFT analysis
The report tells you exactly what's wrong and where. Common fixes include adjusting test point spacing, moving pads away from tall components, or adding dedicated test points to critical nets. Most issues can be resolved during your next board revision. For detailed DFT guidance, read our design for test guide.
Start with our design for test guide, which covers test point placement, sizing, and the most common DFT mistakes. Once your layout is ready, come back here and run the analysis to verify your work.
Find testability problems before they find you
Upload your netlist, get a report in minutes. If your board is ready for a fixture, you'll know. If it's not, you'll know exactly what to fix.