Full technical review FNIRSI DPOX180H

Product Introduction

The FNIRSI DPOX180H is a versatile handheld digital phosphor oscilloscope designed to address the complex measurement needs of electronics enthusiasts, hobbyists, and professional engineers alike. This compact 2-in-1 device uniquely combines a high-performance dual-channel oscilloscope with a 20MHz DDS function signal generator, offering a comprehensive solution for signal analysis and generation in a single portable unit. Its standout features, such as a 180MHz analog bandwidth, a 500MSPS real-time sampling rate, and advanced digital phosphor technology, set it apart in the portable oscilloscope market. The DPOX180H is engineered for projects requiring precise waveform visualization, signal debugging, and component testing, making it an ideal tool for field service, educational purposes, and benchtop electronics development where space and portability are critical. Check out our other technical reviews for more hardware testing.

Hardware specifications

Core Specifications: FNIRSI DPOX180H

Brand Name: FNIRSI
Model Number: DPOX180H
Dimensions: 135mm x 90mm x 40mm
Operating Temperature: 0 — 40 ℃
DIY Supplies: Electrical
Certification: CE
Origin: Mainland China
Battery Included: Yes
High-concerned chemical: None
Operating Mode: Auto Range
Number of channels: 2
Analog bandwidth: 180MHZ
Maximum sampling rate: 500MSPS
Input coupling: DC/AC
Rise time: 2.5nS
Storage depth: 120Kpts
Input impedance: 1MΩ-18PF
Vertical sensitivity: 5mV ~ 10V(1X)
Time base range: 5nS ~ 50S
DC accuracy: ±2%
Time accuracy: ±0.01%
Measurement range: 40mV ~ 80V(1X)
Digital phosphor technology: Supported
Color temperature display: Supported
Zoom scaling time base: Supported
20M hardware bandwidth limitation: Supported
Adjustable automatic bandwidth limitation: Supported
X-Y mode: Supported
FFT: Supported
Cursor measurement: Frequency/Period/Amplitude
Trigger detection: Digital trigger
Trigger mode: Auto/Single/Normal
Trigger edge: Rising/Falling
Roll mode: Supported
Screenshot storage: 90
Waveform storage: 250 groups
Capture signal: 500
Parameter measurement: 12 kinds
Signal generator: 14 standard function signals
Auto-adjustment: Supported
Waveform manager: Supported
Waveform output: Supported
High-voltage burnout protection: Supported
Screen size: 2.8 inches
Screen resolution: 320×240
Display technology: IPS full view
Expansion interface: USB transmission interface
Auto power-off: 5 minutes-2 hours
Firmware upgrade: Supported (iso image upgrade)
Charging requirements: 5V 2A
Battery capacity: 3000mAh (4.2V rechargeable polymer lithium battery)
Standby time: 3.5 hours at full charge
DC Voltage measurement: 400V
AC Voltage measurement: 400V

Technical Support & Resources

Resources:

FNIRSI 1013D.pdf

Available Versions

Available Versions & Selection Guide

The DPOX180H is available in several color configurations: NEW Blue-Russian, NEW Yellow-English, NEW Yellow-Russian, and NEW Blue-English. The outer packaging for both yellow and blue oscillographs uses blue as the cover packaging.

Package Contents

What’s in the Box?

1 * DPOX180H Digital Phosphor Oscillograph
2 * Matching 200MHz Probe (1X & 10X）
1 * 5V2A Power Adapter
1 * USB Data Line
1 * User Manual

Features and benefits

Why I love FNIRSI DPOX180H

High-Speed Sampling and Bandwidth: The DPOX180H boasts a maximum sampling rate of 500MSPS and an analog bandwidth of 180MHz. This high sampling rate is achieved through four interleaved 125MSPS 8-bit high-speed ADCs, ensuring precise and real-time measurements with minimal clock phase error (less than 0.5 degrees). When using a single channel, the full 500MSPS sampling rate and 180MHz bandwidth are available, allowing for detailed analysis of fast signals. With two channels active, each channel operates at 250MSPS, limiting the bandwidth to 90MHz, which is still highly capable for most dual-channel applications. This capability allows users to capture transient events and high-frequency components with exceptional fidelity, crucial for debugging modern electronic circuits.
Digital Phosphor Technology with Grayscale and Color Temperature Display: This advanced technology, typically found in higher-end oscilloscopes, allows users to visualize signal distribution and probability characteristics. It effectively overcomes glitches caused by discrete noise and reveals the true nature of signals, showing where a signal spends most of its time (brighter areas) and less time (darker areas). Furthermore, it can indicate the speed of rise and fall times of step signals by varying edge brightness. The DPOX180H enhances this with both grayscale and color temperature displays: grayscale uses different brightnesses of the same color (yellow for channel 1, cyan for channel 2), while color temperature uses a spectrum of colors (green to red for channel 1, blue to green for channel 2) to represent signal distribution, providing a more intuitive understanding of complex waveforms.
Integrated 20MHz DDS Function Signal Generator with Chopping Output: Beyond its oscilloscope capabilities, the DPOX180H includes a powerful 20MHz DDS function signal generator offering 14 standard waveforms, including sine, square, triangle, sawtooth, exponential, and pulse waves, with a fixed output amplitude of 1VPP. A unique «chopping output» feature allows users to capture and output up to 500 customized signal segments directly from measured waveforms, with a maximum frequency of 10MHz. This is a significant advantage over traditional arbitrary waveform generators, as it ensures the output signal is an exact replica of a real-world measured signal, making it invaluable for testing and analysis in various scenarios where specific, real-world signal characteristics are needed.
Robust Triggering and Bandwidth Control: The device features digital trigger technology, offering superior performance compared to analog triggers, especially in complex FPGA designs. It supports Auto, Single, and Normal trigger modes with rising/falling edge detection, providing comprehensive control for capturing various signal types, including burst and logic signals. An original adaptive adjustable high-frequency rejection mechanism automatically suppresses high-frequency noise based on waveform characteristics, with adjustable intensity, ensuring stable triggering even with noisy signals. Additionally, a switchable 20MHz hardware bandwidth limit filters out high-frequency noise above 20MHz with natural and smooth attenuation, while an adjustable automatic bandwidth limiting function dynamically adapts to the current time base, further enhancing signal clarity and stability.
High Sensitivity, Low Noise, and User-Friendly Display: With a high sensitivity of 5mV/DIV, the DPOX180H can accurately measure very small signals while maintaining its 180MHz bandwidth and excellent flatness. This is achieved through an analog front-end with a 1.8GHz bandwidth and a high-speed operational amplifier. The device also boasts an ultra-high waveform signal-to-noise ratio, thanks to excellent shielding, a stable feedback system, and a 4-layer immersion gold PCB, ensuring clean and clear waveform displays. The 2.8-inch IPS full-vision HD display (320×240 resolution) offers high contrast and clear visibility from any angle, even in sunlight, making waveform analysis comfortable and efficient. The 50000wfm/s waveform refresh rate, combined with digital phosphor technology, ensures that even low-probability abnormal waveforms are clearly visible.

Pros and Cons

Strengths & Weaknesses:

What I Like

Integrated 2-in-1 functionality (Oscilloscope + DDS Signal Generator)
High 180MHz analog bandwidth and 500MSPS real-time sampling rate
Advanced Digital Phosphor Technology with grayscale and color temperature display
Unique «Chopping Output» for generating custom waveforms from captured signals
Dual-channel input for simultaneous measurement and comparison
Comprehensive digital trigger functions (Auto/Single/Normal, Rising/Falling edge)
Adaptive adjustable high-frequency rejection for stable triggering in noisy environments
Switchable 20MHz hardware bandwidth limit and adjustable automatic bandwidth limiting
High sensitivity (5mV/DIV) with excellent flatness
Ultra-high waveform signal-to-noise ratio due to robust analog front-end design
Fast 50000wfm/s waveform refresh rate
2.8-inch IPS full-vision HD display for clear viewing
Built-in 3000mAh battery with 5V2A fast charging (80% in 1 hour)
High voltage anti-burn protection (up to 400V)
USB data export for screenshots and firmware upgrades
Roll mode and X-Y mode with digital phosphor support
ZOOM time base for magnified viewing (2-1000x)

Points to Consider

The screen size is relatively small at 2.8 inches, which might limit detailed waveform viewing for some users.
When both channels are active, the sampling rate per channel drops to 250MSPS, and bandwidth is limited to 90MHz.
The FFT spectrum display is qualitative, not designed for professional quantitative measurements.
WAV files from waveform storage do not support viewing on a computer temporarily.
The output amplitude of the signal generator is fixed at 1VPP, limiting flexibility for certain applications.

Price and Availability

Where to Buy & Customer Reviews

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Store info

STORE

⭐ 98.6% Positive Feedback | 123.0K Followers

Name:	FNIRSI Official Store
Store no.:	2939001
Location:	China
Open since:	Feb 26, 2017

Detailed seller ratings

Item as Described	4.9 Above Average
Communication	4.9 Above Average
Shipping Speed	4.9 Above Average

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User reviews

User Reviews & Feedback Analysis ⭐ 5.0 (4) | Sold (24)

Reviews FNIRSI DPOX180H

Authentic Feedback Analysis:

⭐ 5.0/5 | AliExpress Shopper: Excellent option for home use.
⭐ 5.0/5 | F***v: All good.
⭐ 5.0/5 | P***E: Information not available.
⭐ 5.0/5 | Х***ч: Information not available.

Pinout and Interface Map

PRODUCT PARAMETER FNIRSI DPOX180H

FNIRSI DPOX180H

Comparison table

Technical Specifications & Comparison FNIRSI DPOX180H

CURSOR MEASUREMENT	Frequency/Period/Amplitude
20M HARDWARE BANDWIDTH LIMITATION	supported
DIGITAL PHOSPHOR TECHNOLOGY	supported
COLOR TEMPERATURE DISPLAY	supported
ZOOM SCALING TIME BASE	supported
WAVEFORM OUTPUT	supported
ADJUSTABLE AUTOMATIC BANDWIDTH LIMITATION	supported
MODE	DPOX180H
ROLL MODE	supported
NUMBER OF CHANNELS	2
X-Y MODE	supported
ANALOG BANDWIDTH	180MHz
AUTO-ADJUSTMENT	supported
MAXIMUM SAMPLING RATE	500MSPS
WAVEFORM MANAGER	supported
INPUT COUPLING	DC/AC
HIGH-VOLTAGE BURNOUT PROTECTION	supported
RISE TIME	2.5ns
SCREEN SIZE	2.8 inches
STORAGE DEPTH	120Kpts
SCREEN RESOLUTION	320×240
INPUT IMPEDANCE	1MΩ-18PF
DISPLAY TECHNOLOGY	IPS full view
VERTICAL SENSITIVITY	5mV~10V(1X)
EXPANSION INTERFACE	USB transmission interface
TIME BASE RANGE	5nS~50S
AUTO POWER-OFF	5minutes-2hours
DC ACCURACY	±2%
FIRMWARE UPGRADE	supported iso image upgrade
TIME ACCURACY	±0.01%
CHARGING REQUIREMENTS	5V 2A
BATTERY CAPACITY	3000mAh
TRIGGER MODE	Auto/Single/Normal
STANDBY TIME	3.5 hours at full charge
TRIGGER EDGE	Rising/Falling
DIMENSIONS	135mmx90mm x40mm
MEASUREMENT RANGE	40mV~80V(1X)
SIGNAL GENERATOR	14 standard function signals
SCREENSHOT STORAGE	90
WAVEFORM STORAGE	250 groups
CAPTURE SIGNAL	500
PARAMETER MEASUREMENT	12 kinds
ACCESSORIES	200m probe x2,charger, usb date cable,manual.

Final summary

Final Verdict: FNIRSI DPOX180H

The FNIRSI DPOX180H stands out as an exceptionally capable and feature-rich handheld digital phosphor oscilloscope, offering remarkable value for its price point. Its combination of a 180MHz analog bandwidth, 500MSPS real-time sampling rate, and advanced digital phosphor technology makes it a powerful tool for detailed signal analysis, far exceeding typical expectations for a device of its size and cost. The integrated 20MHz DDS function signal generator with its unique «chopping output» capability further enhances its utility, making it an ideal choice for electronics hobbyists, students, and professional engineers who require a portable, all-in-one solution for debugging, testing, and signal generation. While the 2.8-inch screen might be small for some, the IPS display quality and comprehensive feature set, including high voltage protection and fast charging, firmly position the DPOX180H as a top contender in the portable test equipment market. Its main advantage lies in its ability to provide high-end oscilloscope features, like digital phosphor and adaptive triggering, in a compact, battery-powered form factor, making it an indispensable tool for both benchtop and field work. For more in-depth analyses, visit andibond.com.