Multimeters

You might wonder if you can control your FNIRSI multimeter from your computer over USB. This matters because remote logging and automation can save you hours of manual readings. Most FNIRSI models use a proprietary chip that lacks standard SCPI commands. I discovered this the hard way when my meter refused to talk to common … Read more

Getting your FNIRSI multimeter manual in English can feel frustrating when the box only has Chinese. I have been there myself, and it is important because you need clear instructions for safety and accuracy. Many people do not realize that FNIRSI provides English manuals directly on their official website and through authorized sellers. I found … Read more

You just got your FNIRSI multimeter and noticed its function generator stops at 50 kHz. This limit might seem low, but it is important for What the tool can really do. That 50 kHz cap is a deliberate design choice for stability and cost. It keeps the signal clean and reliable for audio circuits, sensor … Read more

I often get asked how to enable battery saver mode on an FNIRSI multimeter. This feature is crucial for extending battery life during long projects or field work. Most FNIRSI models, like the 101L, automatically enter a sleep state after about 15 minutes of inactivity. I have found this prevents unexpected dead batteries when you … Read more

You just bought a new FNIRSI multimeter, but the display has confusing symbols with no clear explanation in the manual. This makes it hard to trust your readings or use the tool correctly. Many users feel frustrated when key display meanings are left out, often because manuals assume prior knowledge. I found that online forums … Read more

FNIRSI DST-201 vs FNIRSI DST-210: Best Oscilloscope Multimeter for Field Service? I’ve been testing two of FNIRSI’s latest handheld oscilloscope multimeters side-by-side: the DST-201 3-in-1 (with its built-in DDS signal generator) and the upgraded DST-210 2-in-1 (boasting a much faster 48MS/s sample rate and 10MHz bandwidth). Both promise to replace a handful of tools in … Read more

When you use the signal generator function on your FNIRSI multimeter, you might wonder if you must turn it off by hand each time. This matters because leaving it on can drain your battery faster than you expect. The truth is, most FNIRSI models do not automatically shut down the signal generator when you switch … Read more

You might be wondering if your FNIRSI multimeter can handle digital data bus analysis. This matters because many hobbyists and technicians want to test communication lines without buying expensive gear. The truth is, a standard FNIRSI multimeter can measure basic voltage levels on a bus, but it cannot decode complex digital signals. For that, you … Read more

Many of us who use FNIRSI multimeters have wondered why there is no built-in magnet on the back for hands-free positioning. This is a common question because a magnet makes it so much easier to attach the meter to a metal surface while you work. The truth is, FNIRSI designed their multimeters this way to … Read more

You plug a 200W device into your FNIRSI multimeter, and it reads 176W. This is not a broken meter. It is a normal result that matters because it affects how you test power supplies and batteries. The missing watts often come from power factor, internal resistance, or the meter’s measurement method. Your device might also … Read more