As a pioneer in automated GPS location-based technology at Webtech Wireless we design our own hardware and software solutions. This provides us with the necessary control to build and deliver the solutions our customers rely on. In order to ensure our products are secure, reliable, and robust enough to outlast diverse road conditions and meet industry standards for heavy-duty vehicle applications, the key to our success, (we have delivered hundreds of thousands of Locators that process millions of transactions a day), comes down to one thing—TESTING.
We hire the best network operations and engineers available in the industry and it’s on their shoulders to ensure our GPS fleet tracking solutions keep working around the clock every day of the year. I dropped into our testing area to find out more about why it is that Webtech Wireless is indeed an end-to-end solution for fleet GPS tracking.
Quality Assurance Means Testing, Testing, Testing
Sarkis Teghararian, Manager of Hardware Engineering provided me with an excellent overview of the facility while Kevin Lockwood, Hardware Engineer, continued testing Locators in the background, occasionally adding valuable commentary to my questions.
As we entered the work area Sarkis explained, “We develop and test all our products and increasingly we test third-party products as well. Depending on the needs, complexity, and phase of the project, testing is done either in-house or outsourced to other testing labs” Testing equipment is arranged in a series of stations, each dominated by some device I would later learn has a specific testing role to play. Before I could learn more about all these cool testing stations (and about the intriguing command module-like chamber in the corner), I first needed a quick lesson in quality assurance.
A Quality Assurance Primer
Depending on the needs, there are different types of testing. For example, derivative testing verifies only changes to a product, pre-qualification testing ensures a prototype will stand up to its design specifications, and regression testing validates new features including their impact on pre-existing components (i.e., it tests that new features don’t compromise the old ones).
In addition, I needed to know that there are two distinct phases of testing:
- Development testing to validate new designs
- Manufacturing testing to validate that manufactured units are built according to specifications
Testing for an End-to-end Solution
When testing gets to the manufacturing QA phase (ensuring manufactured quality) it’s tested differently. With the design already verified, testing becomes more granular, “but” insists Kevin peering up for one of the WT 5130 Locators, “each and every unit is tested”. Because each unit must be tested individually, testing is to a large extent automated. “Some components are manufactured in China”, continues Kevin, “and some locally, so we test to ensure all are manufacturers are building according to specifications.”
A key component of Webtech Wireless’ offerings is end-to-end solutions, but what does that mean for quality assurance? The answer is system testing. Units aren’t just tested by themselves, but also as they relate to a custom-designed solution for a specific client. So, a Locator that’s tested for compliance with manufacturing specifications is also tested with Webtech Wireless software and then again with an EOBR (electronic onboard recorder) such as the MDT 3100 to ensure they work in concert.
Enter the Time Machine
Sarkis refers to it wryly as the “Time Machine”, but it’s no joke—on closer inspection, I see that it is in fact branded officially as the GTEM ETS Time Machine. Before my imagination can run too wild, Sarkis brings me back patiently explaining that this machine tests the long-term effects of radiation from GPS and cellular transmissions. During the design phase, for example, a new Locator is placed into the time machine, which tests that its design is solid. The machine is able to speed up the exposure rates and thus reduces both the time it takes to test, and also the cost of testing. Among other criteria, the Locator is tested against its radio frequency rates, how well its circuitry responds, and how well it is able to communicate wirelessly with the base station.
Quality Assurance is about “continuous improvement”, asserts Sarkis who cites the development of a new audio/acoustic booth to the roster as well as empirical testing to increase the precision of testing. In the future, we also plan to increase the testing of third-party integrations and products. All of this so that we can deliver the incredible reliability that our customers expect of us in a GPS/AVL solution that customers trust to make decisions with every minute of every day.