05/06/2026
What is inline testing and how is it done currently and why our multi‑channel voltage scanners give your company the consistency, accuracy, and confidence needed for reliable production.”
In practice, inline testing means:
- Every unit / system gets checked as it moves through the build process
- Voltage rails, continuity, resistance, and presence checks are verified.
- Results are logged, repeatable, and traceable
- Faulty units are diverted instantly, preventing downstream waste
It’s the backbone of Class 3 manufacturing, where reliability is non‑negotiable.
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🔧 So why are companies still doing voltage checks with a handheld DMM?
Because the DMM is familiar, cheap, and “good enough”… until it isn’t.
Here are the real reasons — the ones engineers will admit privately.
1. Legacy processes
Production lines often evolve slowly.
If a technician has been probing connectors for 10 years, the process becomes “the way we do it”.
2. Low initial cost
A DMM costs £50–£150.
A proper automated test system costs more — even though it saves far more in labour and scrap.
3. Fear of integration
Managers worry automation will require:
- rewriting test procedures
- retraining staff
- downtime
- validation paperwork
So they stick with the “safe” option.
4. Human judgement feels comforting
Technicians trust their own hands and eyes.
They feel in control when probing a pin directly.
5. They underestimate takt‑time loss
One probe test takes 10–20 seconds.
A board with 50–100 points?
A batch of 200 units?
Suddenly you’ve lost hours per shift.
6. They don’t know multi‑channel scanners exist
This is the big one.
Most companies have never seen a device that can route hundreds of test points into a standard DMM automatically.
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🟢 Greenfrogcoding can change the game, multi‑channel voltage scanners can solve every pain point above:
- Inline‑ready — drop into any production flow
- Better takt time — seconds instead of minutes
- Zero human error — no missed pins, no shaky hands
- No calibration — accuracy inherited from the customer’s own DMM
- Two‑wire per channel sequentially connected into one standard DMM.
