FNIRSI

When you buy a multimeter, you want to know it is safe to use. This article explores if your FNIRSI multimeter has passed safety testing and earned official agency certifications. Many budget multimeters skip expensive safety tests, so checking for a real UL or CE mark is critical. I have seen cheap meters fail catastrophically … Read more

Many people ask me why the screen on their FNIRSI multimeter feels tiny and tough to read. This matters because a hard-to-read display can lead to mistakes when you are testing circuits or batteries. The smaller screen is often a trade-off for packing more features into a compact, portable tool. In my experience, the bright … Read more

Many people ask if they can make the grid brighter on their FNIRSI multimeter screen. This matters because a dim display can be hard to read in a workshop or outdoors. The screen’s brightness is usually set by the factory for battery life. I have found that adjusting the viewing angle or cleaning the screen … Read more

FNIRSI DSO152 vs FNIRSI DSO-TC3: Best Pocket Oscilloscope for Beginners? I’ve been testing two of FNIRSI’s most popular pocket scopes, and the choice between the DSO152 and the DSO-TC3 is tougher than you’d think. The DSO152 is a pure oscilloscope with a 200KHz bandwidth and 2.5MS/s sampling rate, while the DSO-TC3 packs a 500KHz bandwidth, … Read more

FNIRSI DSO152 vs FNIRSI DSO-510: Best Portable Oscilloscope for Portability I’ve been testing two of FNIRSI’s most popular handheld scopes — the pocket-sized DSO152 and the feature-packed DSO-510 — to figure out which one actually deserves a spot in your tool bag. The DSO152 is a super-compact 200KHz bandwidth unit with a 2.5MS/s sampling rate, … Read more

FNIRSI 2C53T vs FNIRSI DST-201: Best Oscilloscope Multimeter for Hobbyists I’ve been testing two of FNIRSI’s most popular handheld 3-in-1 tools — the FNIRSI 2C53T with its 50MHz bandwidth and 250MS/s sampling rate, and the FNIRSI DST-201 with a 1MHz bandwidth and 5MSa/s sampling rate. Both pack an oscilloscope, multimeter, and DDS signal generator into … Read more

FNIRSI 2C53T vs 2C23T Oscilloscope Multimeter: Best Beginner Tool? I’ve been testing the FNIRSI 2C53T and the FNIRSI 2C23T side-by-side, and the biggest difference comes down to bandwidth: the 2C53T offers 50MHz while the 2C23T tops out at 10MHz. Both are 3-in-1 tools packing an oscilloscope, multimeter, and DDS signal generator into a handheld device. … Read more

FNIRSI DST-201 vs FNIRSI DST-210: Best Oscilloscope Multimeter for Repair Techs? If you’re a repair tech trying to decide between the FNIRSI DST-201 and the FNIRSI DST-210, you’re looking at two handheld oscilloscope multimeters that pack a ton of features into a small package. The DST-201 gives you a 3-in-1 tool with a 1MHz bandwidth, … Read more

FNIRSI 2C23T vs FNIRSI DST-210: Best Oscilloscope Multimeter for Field Service? I’ve spent hours with both the FNIRSI 2C23T and the FNIRSI DST-210, and honestly, picking between these two portable oscilloscope multimeters is tougher than you’d think. The 2C23T packs a 50MSa/s sampling rate with a built-in DDS generator, while the DST-210 counters with a … Read more

FNIRSI 2C53T vs FNIRSI 2C53P: Best Handheld Oscilloscope Multimeter for Electronics Repair? If you’re shopping for a compact 3-in-1 oscilloscope multimeter for electronics repair, you’re likely torn between the FNIRSI 2C53T and the FNIRSI 2C53P. Both pack a 50MHz bandwidth and 250MS/s sampling rate, but they take very different approaches to the same job. I … Read more