Fnirsi DPOS350P is a versatile 4-in-1 digital oscilloscope with a large 7" IPS touchscreen that combines an oscilloscope, signal generator, spectrum analyzer, and frequency response analyzer (FRA). It offers 350 MHz bandwidth, 1 GSa/s sampling, and clear visualization modes including Waterfall 3D for fast diagnostics, testing, and signal analysis both in the lab and in the field.
The DPOS350P is designed for comfortable tablet-style operation—touch control speeds up parameter setup, and the 7" display with 1024 × 600 resolution provides a clear view of waveforms and spectra. By combining multiple measurement modes, it saves bench space and can replace several separate instruments.
Main advantages and features:
- 2-channel oscilloscope: 350 MHz, 1 GSa/s, 60 kpts memory depth, digital phosphor, FFT, and high resolution 8–16 bit.
- Signal generator: up to 50 MHz (sine), 14 standard waveforms + captured waveform, amplitude/offset and duty-cycle adjustment.
- Spectrum analyzer: 200 kHz to 350 MHz, FFT 4K–32K, Waterfall modes including 3D view, cursor measurements.
- FRA – frequency response analyzer: 100 Hz to 50 MHz for quick evaluation of amplifiers, filters, and control loops (Bode plot).
Package contents: 2× 350 MHz probes, QC18W charger, USB cable, alligator clips, user manual.
Specifications
- Manufacturer
- Fnirsi
- Model
- DPOS350P
- Initial configuration
- 5 presets
- Languages
- Chinese / English / Russian / Portuguese
- Screen size
- 7 inches
- Screen resolution
- 1024 × 600 pixels
- Display technology
- IPS, full viewing angle
- Interaction mode
- Capacitive touchscreen
- Expansion interface
- Capacitive touchscreen
- Auto power off
- 15 minutes ~ 1 hour / off
- Updates
- Supports .iso image updates
- Charging requirements
- QC18W – 12 V / 1.5 A
- Battery
- 3.7 V lithium, 8000 mAh
- Operating time
- approx. 3 hours
- Charging time
- approx. 5 hours
- Total power consumption
- 10 W
- Cooling
- passive (air)
- Device dimensions
- 190 × 128 × 37 mm
- FRA: excitation signal frequency
- 100 Hz ~ 50 MHz
- FRA: excitation signal amplitude
- 0 ~ 5 Vpp
- FRA: excitation signal offset
- −2.5 V ~ +2.5 V
- FRA: number of frequency points
- 20 ~ 500
- FRA: cursor measurement
- frequency / gain / phase
- FRA: operating mode
- single / cyclic
- FRA: system calibration
- supported
- SA: conversion method
- FFT
- SA: FFT length
- 4K ~ 32K
- SA: frequency range
- 200 kHz ~ 350 MHz
- SA: level range
- −60 dBmV ~ +260 dBmV
- SA: cursor measurement
- frequency / amplitude
- SA: marker parameter
- maximum harmonic energy
- SA: waterfall plot
- supported
- SA: 3D waterfall plot
- supported
- SA: auto setup
- supported
- SA: system calibration
- supported
- Oscilloscope: number of channels
- 2
- Oscilloscope: bandwidth
- 350 MHz
- Oscilloscope: rise time
- 1 ns
- Oscilloscope: max. sampling rate
- 1 GSa/s
- Oscilloscope: memory depth
- 60 kpts
- Oscilloscope: input impedance
- 1 MΩ / 14 pF
- Oscilloscope: time base range
- 5 ns ~ 50 s
- Oscilloscope: time base (roll)
- 50 ms ~ 50 s
- Oscilloscope: vertical sensitivity
- 2 mV ~ 20 V (1×)
- Oscilloscope: vertical range
- 16 mV ~ 160 V (1×)
- Oscilloscope: DC accuracy
- ±2 %
- Oscilloscope: time accuracy
- ±0.01 %
- Oscilloscope: input coupling
- DC / AC
- Oscilloscope: grid background
- show / hide
- Oscilloscope: waveform offset
- coarse / fine adjustment
- Oscilloscope: overvoltage protection
- up to 400 V
- Oscilloscope: waveform brightness
- adjustable
- Oscilloscope: FFT display
- supported
- Oscilloscope: digital phosphor
- supported
- Oscilloscope: probe attenuation
- 1× / 10× / 100×
- Oscilloscope: hardware bandwidth limit
- 150 MHz / 20 MHz
- Oscilloscope: high-resolution mode
- 8 bit ~ 16 bit
- Oscilloscope: parameter measurements
- 12 types
- Oscilloscope: cursor measurement
- time, period, frequency, level, voltage
- Oscilloscope: trigger detection
- digital
- Oscilloscope: trigger channel
- CH1 / CH2
- Oscilloscope: trigger mode
- Auto / Single / Normal
- Oscilloscope: trigger edge
- Rising / Falling
- Oscilloscope: trigger holdoff
- L1 ~ L3
- Oscilloscope: trigger level
- Manual / Auto (10 % ~ 90 %)
- Oscilloscope: screenshot storage
- 90 images
- Oscilloscope: waveform recording
- 500 sets
- Oscilloscope: color temperature display
- supported
- Oscilloscope: X-Y mode
- supported
- Oscilloscope: time base zoom
- supported
- Oscilloscope: one-button auto setup
- supported
- Oscilloscope: one-button zero return
- supported
- Oscilloscope: data browser
- supported
- Signal generator: waveform types
- 14 standard + captured waveform
- Signal generator: frequency
- 0 ~ 50 MHz (sine), other waveforms up to 10 M / 5 M / 3 M
- Signal generator: amplitude
- 0 ~ 5 Vpp
- Signal generator: offset
- −2.5 V ~ +2.5 V
- Signal generator: duty cycle
- 0.1 % ~ 99.9
- Signal generator: frequency resolution
- 1 Hz
- Signal generator: amplitude resolution
- 1 mV
- Signal generator: offset resolution
- 1 mV
- Signal generator: duty-cycle resolution
- 0.1
- Signal generator: saved custom waveforms
- 500 sets
