At Precision Group, delivering a reliable power supply isn’t a bonus—it’s the baseline.
Our customers count on equipment that performs in extreme conditions, year-round. That’s why we’ve invested in a fully automated, high-capacity testing cabinet right here in our U.S. lab—pushing our power supplies to their limits before they ever leave the warehouse. The result? Reliable power supplies that you can trust in the field.
We sat down with Chuck Catanese, Director of Engineering, to walk us through this new testing setup and what makes it a game-changer.
Simulating Harsh Conditions to Ensure a Reliable Power Supply
“This machine basically does the same thing we used to do manually—only now it’s all automatic,” says Chuck. “We can test 192 units at once, simulating real-world ONT loads, and the computer controls the entire process.”
Each power supply is monitored continuously for two full days under elevated heat and load conditions—designed to mimic the most extreme environments.
“We’ve got the worst-case temperature. We’ve got the max load. Everything just stays in here and cooks.”
This aggressive test cycle ensures that every reliable power supply we ship is ready to perform under pressure.
Advanced Data Logging for Power Supply Reliability
The system checks voltage and current every five to ten seconds, recording everything in real time.
“The computer talks to all 48 of the load modules. It cycles through every unit, flags anything out of spec, and tracks performance second by second,” Chuck explains. “You can pull up any unit’s data—graph it, export it, dig into any variable.”
With this level of scrutiny, any deviation is easy to spot—even if it happens hours into the test.
“It gives us total confidence that we’re shipping a reliable power supply, not just something that powered on once at the factory.”
Built-In Reliability from Start to Finish
The testing cabinet is just one layer of Precision Group’s comprehensive QA process:
- Initial circuit board validation before full assembly
- Mid-build functional testing
- A 100% two-hour burn-in test at the factory
- Final plug-in test just before sealing and shipping
- Sample-based stress testing once the product arrives at Precision Group
“For a mature product, we might test 500-600 units per 50,000-unit batch. For new or high-profile products—or if there’s ever been a past issue—we ramp up sampling,” Chuck says.
In some cases, like an upcoming new product launch, every single unit in the first production run will be tested.
“It’s a brand-new product with internal batteries. Even though it’s factory tested, we’ll test 100% again. It’s all about confidence.”
Automation That Delivers Reliable Power Supplies Faster
Once everything is plugged in, a technician selects the test profile, presses start, and walks away.
“That plug-in process is the longest part,” Chuck says. “Once it’s running, the system takes over. And if something goes wrong—low voltage, loose wiring—we catch it. Even if no one’s watching.”
This investment in automation doesn’t just improve accuracy. It speeds up throughput, reduces labor, and most importantly—ensures that every reliable power supply lives up to its name.
