FNIRSI DSO-152 Plus Pocket Oscilloscope — 200KHz Handheld DSO

FNIRSI DSO-152 Plus Pocket Oscilloscope

The FNIRSI DSO-152 Plus is a handheld oscilloscope for UK hobbyists who need a portable scope for Arduino and ESP32 debugging, sensor signal checks, and bench diagnostics without a full benchtop unit. It measures signals up to 200KHz at 2.5MS/s, covers ±40V direct (800Vpp with the included 10x P6100 probe), and runs for around 4 hours on its 1000mAh battery. At 100g it slips into a tool bag without taking up bench space.

• 200KHz bandwidth, 2.5MS/s sampling — captures PWM, UART, I²C, and audio-range signals cleanly
• P6100 10x probe included — extends range to 800Vpp / 280V AC for mains-referenced measurements
• AUTO / Normal / Single trigger — locks on to periodic and one-shot signals without manual setup
• One-key AUTO setting — press once, scope sets timebase and trigger automatically
• 2.8″ LCD, 320×240 — clear waveform display in indoor and workshop lighting
• 1000mAh battery, ~4 hours — USB-C charged, no mains socket needed in the field
• 100g, pocket-sized — fits in a jeans pocket or a tool bag side pocket
• 12-month Kunkune warranty — covered if it fails in normal use

What is the difference between DSO-152 Plus and Standard?

The Plus includes a P6100 10x oscilloscope probe, which extends the measurable voltage range from 80Vpp up to 800Vpp and allows safe measurement of signals up to 280V AC (400V peak). The Standard ships with a basic probe and suits low-voltage digital work only. If you plan to measure mains-referenced circuits, switched-mode power supplies, or motor drivers, the Plus is the right choice.

Is the DSO-152 good for Arduino and ESP32 projects?

Yes — 200KHz bandwidth covers every common signal in microcontroller work: 3.3V and 5V logic, PWM outputs up to ~50KHz, UART at standard baud rates, I²C at 100KHz and 400KHz, and SPI up to around 1MHz (for coarse inspection). One-key AUTO sets the timebase automatically, so you’re reading your signal within seconds of probing. For deeper protocol decoding, the FNIRSI 1013D 100MHz dual-channel scope handles faster signals and mixed-signal debugging.

How do the trigger modes work?

AUTO trigger continuously updates the display even with no stable trigger — useful for quickly finding an unknown signal. Normal trigger holds the display frozen until a signal crosses your set threshold, which is what you want for slow or intermittent signals. Single trigger captures one event and freezes — essential for glitches, one-shot pulses, and power-on transients. All three modes are accessible from the front panel without diving into menus.

Can the DSO-152 Plus measure mains voltage safely?

With the included P6100 10x probe, the DSO-152 Plus is rated to 800Vpp (280V AC equivalent). That covers UK mains voltage (230V AC / 325V peak) within the spec. Use the 10x probe setting — never probe mains-connected circuits with the 1x setting, which is rated to 80Vpp only. Always follow standard oscilloscope safety practices: isolate the circuit under test, use one probe at a time, and never float the ground clip on live equipment.

How long does the battery last and can it be used while charging?

The 1000mAh lithium cell delivers approximately 4 hours of continuous use. Charging via USB-C at 5V/1A takes around 2 hours from flat. The scope can be used while charging, making it practical as a bench scope even when the battery is low — run it from a USB-C power bank or laptop port to keep it powered indefinitely.

Best for

Arduino and ESP32 signal debugging, PWM waveform inspection, I²C and UART signal tracing, audio frequency analysis (20Hz–20KHz), DC-DC converter ripple checking, battery charger waveform inspection, sensor output monitoring, school and college electronics labs, first oscilloscope for hobbyists learning test and measurement, and portable field diagnostics where a bench scope won’t fit. Pair with the FNIRSI S1 multimeter for complete voltage, current, and waveform coverage at the bench.

What’s In The Box

• FNIRSI DSO-152 Plus oscilloscope
• P6100 10x probe with ground clip and accessory kit
• USB-C charging cable

Why Kunkune

Shipped from our Oxfordshire warehouse via Royal Mail 1–2 day delivery. 12-month warranty on all FNIRSI products. 60-day returns. No drama.

Buying in bulk? For orders of 10+ units or trade pricing, contact us for a custom quote.

Frequently Asked Questions — FNIRSI DSO-152 Plus

What bandwidth do I need for Arduino and ESP32 work?

200KHz covers all standard microcontroller signals: UART up to 115200 baud, I²C at 100KHz and 400KHz, PWM outputs, and most analogue sensor signals. For SPI above 1MHz or faster serial protocols, you’ll need a scope with at least 20MHz bandwidth.

Can I save waveforms on the DSO-152?

The DSO-152 supports screen hold and baseline calibration but does not have onboard storage for waveform capture files. For waveform saving and PC connectivity, consider the FNIRSI 1013D which includes USB data export.

Does the DSO-152 Plus measure frequency and period?

Yes — the display shows frequency, period, and voltage measurements (Vmax, Vmin, Vpp) as automatic readouts alongside the waveform. No manual cursor measurement needed for basic parametric readings.

What does the one-key AUTO setting do?

Pressing AUTO analyses the input signal and automatically sets the timebase, voltage scale, and trigger level to display a stable waveform. It works on most periodic signals — useful when you probe an unknown signal for the first time and don’t want to manually hunt for the right settings.

Is the DSO-152 suitable for mains appliance repair?

Yes, with the included P6100 10x probe. The Plus is rated to 800Vpp (280V AC), which covers UK mains. Always use the 10x probe position and follow standard oscilloscope isolation precautions when probing mains-connected circuits.

How do I update the firmware on the DSO-152?

Firmware updates are loaded via the USB-C port using FNIRSI’s firmware tool. Check the FNIRSI website for the latest firmware version for the DSO-152 — updates occasionally add measurement features and improve trigger stability.