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Carrying a separate oscilloscope, multimeter, and signal generator to every job is impractical for anyone who doesn’t need lab-grade precision on all three at once. Combo instruments trade some specialization for genuine convenience, and FNIRSI’s 3-in-1 line has built a real following among hobbyists and field technicians for that reason.
What It Is
This is the FNIRSI 2D15P, a handheld combo instrument packing a 100MHz oscilloscope, a digital multimeter, and a DDS signal generator into one portable unit — three bench tools in a single handheld package.
Key Features
- 100MHz oscilloscope bandwidth for waveform capture and analysis
- Built-in digital multimeter for standard voltage, resistance, and continuity measurements
- DDS signal generator for signal-injection testing
- Compact, portable, battery-capable handheld form factor
Pros and Cons
At 4.1 stars, the sheer convenience of three instruments in one handheld unit is the clear draw — for field diagnostic work where carrying a full bench setup isn’t practical, this covers a lot of ground.
As a combo instrument, none of its three functions match a dedicated single-purpose bench instrument at the same price point — it’s a genuinely useful generalist tool, not a replacement for precision lab equipment on demanding work.
Who It’s For
Field technicians, hobbyists, and anyone who wants broad diagnostic capability in one portable tool rather than three separate bench instruments.
Verdict
A genuinely convenient generalist tool for field diagnostic work — go dedicated single-purpose instruments instead if you need precision performance in any one function.