FNIRSI DPOS350P 4-in-1 Digital Oscilloscope
The FNIRSI DPOS350P is a versatile digital oscilloscope designed for convenient and intuitive operation. It features a large 7-inch touch screen for clear signal viewing and quick access to key functions. It combines the features of an oscilloscope, signal generator, spectrum analyzer, and frequency response analyzer, making it suitable for a wide range of measurement applications. High bandwidth, fast sampling, and large memory enable precise signal analysis, while advanced visualization modes improve measurement readability.
Full control over the signal
The large 7-inch touch screen provides a full view of the analyzed signal and precise parameter control. The clear interface allows you to quickly understand the behavior of the system, and the high image quality makes the DPOS350P an "engineer's second pair of eyes" – indispensable for diagnostics and testing.
Maximum functionality
The FNIRSI DPOS350P is an advanced 4-in-1 oscilloscope that offers the functions of four different devices. It is an oscilloscope (2 channels, 350 MHz bandwidth, 1 GSa/s sampling, 8-bit resolution, 50,000 waveforms per second), signal generator (up to 50 MHz), spectrum analyzer (200 kHz – 350 MHz range), and frequency response analyzer (100 kHz – 50 MHz). Such a wide range of functions means that one device replaces several specialized tools, saving space and time.
High measurement performance
The DPOS350P model offers a bandwidth of 350 MHz, a sampling rate of 1 GSa/s, and a memory depth of 60 kpts, which translates into accurate signal reproduction and stable measurements even with complex waveforms. What's more, the FNIRSI DPOS350P allows Bodé chart analysis in the 100 Hz – 50 MHz range, with adjustable frequency, excitation amplitude, and offset. It is the ideal tool for testing amplifiers, filters, and power loops, allowing you to quickly and accurately assess the frequency response of a circuit.
Advanced spectrum and EMI analysis
The device covers a frequency range from 200 kHz to 350 MHz and allows for precise manual adjustment of key parameters (start/stop frequencies, bandwidth, reference level, attenuation, and FFT length). Cursor measurement functions and advanced visualization modes are at your disposal, including an impressive and extremely clear 3D Waterfall view. This makes the oscilloscope ideal for EMI testing, RF signal analysis, and harmonic detection.
Signal visibility like never before
Digital fluorescence technology provides exceptional signal clarity and precise color reproduction. In addition, advanced noise filtering improves waveform detection and presentation, enabling more accurate signal analysis. Support for 8-16-bit technology takes image clarity to the next level.
Tablet design that makes work easier
The slim housing in an elegant black finish with blue accents combines modern design with ergonomics. The tablet form factor allows for comfortable one-handed operation, and the touch interface makes all functions immediately accessible—without unnecessary menus and complicated navigation. This is a device that naturally adapts to the user's work rhythm. The oscilloscope supports multiple languages, including English, Chinese, Russian, and Portuguese, making it ideal for international environments.
Included
- 350 MHz probe x2
- QC18W charger
- USB cable
- Alligator clip leads
- User manual
General
ManufacturerFnirsiModelDPOS350PStartup configuration5 presetsLanguagesChinese / English / Russian / PortugueseScreen diagonal7 inchesScreen resolution1024 × 600 pixelsScreen technologyIPS, full viewing angleInteraction modeCapacitive touch screenExpansion interfaceCapacitive touch screenAuto power off15 minutes ~ 1 hour / offUpdateSupports .iso image updatesCharging requirementsQC18W – 12 V / 1.5 ABattery3.7 V lithium, 8000 mAhOperating timeapprox. 3 hoursCharging timeapprox. 5 hoursTotal power consumption10 WCoolingpassive (air)Device dimensions190 × 128 × 37 mm
Frequency response analyzer (FRA)
Excitation signal frequency100 Hz ~ 50 MHzExcitation signal amplitude0 ~ 5 VppExcitation signal offset−2.5 V ~ +2.5 VNumber of frequency points20 ~ 500Cursor measurementfrequency / gain / phaseOperating modesingle / cyclicSystem calibrationsupported
Spectrum analyzer (SA)
Conversion methodFFTFFT length4K ~ 32KFrequency range200 kHz ~ 350 MHzLevel range−60 dBmV ~ +260 dBmVCursor measurementfrequency / amplitudeMarking parametermaximum energy harmonicWaterfall graphsupported3D waterfall graphSupportedAuto adjustmentSupportedSystem calibrationSupported
Oscilloscope
Number of channels2Bandwidth350 MHzRise time1 nsMax. sampling frequency1 GSa/sMemory depth60 kptsInput impedance1 MΩ / 14 pFTime base range5 ns ~ 50 sTime base (roll)50 ms ~ 50 sVertical sensitivity2 mV ~ 20 V (1×)Vertical range16 mV ~ 160 V (1×)DC accuracy±2%Time accuracy±0.01%Input couplingDC / ACBackground griddisplay / hideWaveform shiftcoarse / fine adjustmentOvervoltage protectionup to 400 VWaveform brightnessadjustableFFT displaysupportedDigital fluorescencesupportedProbe attenuation1× / 10× / 100×Hardware bandwidth limit150 MHz / 20 MHzHigh resolution mode8 bit ~ 16 bitParameter measurements12 typesCursor measurementtime, period, frequency, level, voltageTrigger detectiondigitalTrigger channelCH1 / CH2Trigger modeAuto / Single / NormalTrigger edgeRising / FallingTrigger attenuationL1 ~ L3Trigger levelManual / Auto (10% ~ 90%)Screenshot recording90 imagesWaveform recording500 setsColor temperature displaySupportedX-Y modeSupportedTime base zoomSupportedOne-key auto adjustmentSupportedOne-key zero returnSupportedData browserSupported
Signal generator (SG)
Waveform types14 standard + captured waveformFrequency0 ~ 50 MHz (sine), other waveforms up to 10 M / 5 M / 3 MAmplitude0 ~ 5 VppOffset−2.5 V ~ +2.5 VDuty cycle0.1% ~ 99.9%Frequency resolution1 HzAmplitude resolution1 mVOffset resolution1 mVDuty cycle resolution0.1%Stored custom waveforms500 sets
