The Fnirsi DPOX180H dual-channel oscilloscope and signal generator features a digital phosphor, allowing you to see various signal changes that might be inaccessible or invisible to DSO digital oscilloscopes. Here's my brief review of this device.
- 180 MHz bandwidth. There's a video on YouTube where the device displays a frequency of 100 MHz well without any amplitude drop. There's also a video where measurements are taken up to 180 MHz without any significant drop.
- 500 MSPS sampling rate
- Sensitivity from 5 mV to 10 volts. I measured a signal from a generator with an amplitude of 3 mV.
- XY signal scanning vertically and horizontally, allowing you to observe Lissajous figures.
- Generator of 14 different signals. You can capture the measured signal and output it through the generator.
- Spectrum analyzer
- Stores 90 screen images in memory for further transfer to a computer via a cable.
- Trigger
This is what the two signals will look like if you enable the XY function. If the frequency of one signal changes, the figure will begin to rotate.
You can select "color temperature" in the menu and observe the signal in different colors. Using the "measurement cursor," you can select only a portion of the signal with two cursors and view the characteristics of this clipped signal.
I'm sending a 60 MHz signal with a 5 volt amplitude from the generator; an oscilloscope will show this signal perfectly. I'm using two P6200 probes with a frequency of 200 MHz. When measuring above 5 MHz, a divider of 10 should be set on the probe.
From the signal generator, I feed a rectangle with a frequency of 5 MHz to the input of the oscilloscope, and the oscilloscope also displays this signal perfectly.
Now let's check the oscilloscope's generator. Press the GEN button and activate the generator, which allows you to change the frequency and duty cycle. Sine waves can produce up to 20 MHz, and other signals up to 10 MHz.
Spectrum analyzer in the form of a red line with bursts
For its price, this is a pretty good oscilloscope. My Hantek benchtop oscilloscope can't measure signals at the same frequencies as this fnirsi.
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