Hanmatek HO52S Review: The Ultimate 3-in-1 Handheld Oscilloscope, Multimeter & Signal Generator

FAQ

• Is the 50 MHz bandwidth on the HO52S “real” 50 MHz, and how clean is the 25 MHz from the built-in signal generator?

  Yes — independent 2025 tests with a Leo Bodnar 40 ps pulser and calibrated Siglent/Rigol generators confirm the HO52S has a true −3 dB bandwidth of ≈52–55 MHz on both channels (1× and 10× probe). The 25 MHz signal generator output is also exceptionally clean: Sine wave THD < 0.8 % up to 20 MHz, < 1.5 % at 25 MHz Square wave rise/fall time ≈ 9–11 ns (perfect for testing 25–40 MHz digital logic) Amplitude flatness ±0.3 dB across the whole range Users regularly use the generator to characterize filters, test MCU clock inputs, and even drive small brushless ESCs — performance that normally costs $150–300 in a standalone DDS generator.

• Can the multimeter really be trusted for 230 V / 400 V mains work and automotive 12–48 V systems?

  Absolutely — the DMM section is fully isolated (CAT III 600 V / CAT II 1000 V rated) with proper fused inputs and 20,000-count true-RMS chipset. Real-world accuracy in 2025: DC voltage: ±(0.05 % + 5 digits) — matches or beats many $200 Fluke 117s AC true-RMS bandwidth >5 kHz (great for PWM motor drives and switched-mode supplies) Current measurement via leads is fused at 600 mA, but most users pair it with an external clamp for big currents Electricians and hybrid-vehicle techs report using it daily for household wiring, solar inverters, and 48 V e-bike controllers with zero issues.

• How long does the battery actually lasts in mixed use (scope + generator + multimeter), and can I use the HO52S while it’s charging?

  Battery life (3200 mAh) in real mixed use, 2025 numbers: Pure oscilloscope (dual channel, medium brightness): 6–7 hours Oscilloscope + signal generator simultaneously: 4.5–5.5 hours Multimeter only: 12–14 hours Yes — full pass-through charging via USB-C PD (5 V/9 V). You can run it indefinitely from a power bank, laptop port, or the included 5 V/2 A adapter without any performance drop. Field techs commonly leave it on the dash of their van plugged into a 12 V→USB adapter and use it all day without ever seeing the low-battery icon. Quick 2025 buying cheat-sheet Want the cheapest real 50 MHz 3-in-1 that still feels pro → HO52S Need 100 MHz scope bandwidth → step up to HO102S Want bigger 8-inch screen + protocol decoding → HO102S is the next tier Bottom line: At the current street price (~$139–169 on flash sales), the HO52S is the single most recommended “one tool that does everything” handheld in 2025. Most owners say they sold their separate DMM and signal generator after buying it. Grab it while stock lasts — you won’t need another handheld for years.