Products > Test Equipment

JunTek PSG9080 Programmable Signal Generator (80 MHz - 300 MSa/s - 14-bit)

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TheDefpom:
I have a feeltech generator, it doesn't compare to this one when it comes to user interface and functionality, I would definately choose the PSG9080 over it, my impressions of it from having one here (my review video and teardown will be published on Wednesday) is certainly very different to yours, yes it has some limitations, but it also has some very nice aspects, the PCB's look well designed to me.

mawyatt:

--- Quote from: radiolistener on September 17, 2020, 04:32:08 am ---
--- Quote from: mawyatt on September 16, 2020, 05:16:56 pm ---Maybe those that have these can do some tests that show the waveform spectral purity

--- End quote ---

Here is spectrum measurement for sine 7 kHz 4 Vpp captured with PC sound card "line in" input at 192 kHz sample rate.
Main spectrum window RBW = 0.7 Hz.

The first picture is background noise of installation (sound card + cable connected to PSG9080, PSG9080 is physically disconnected from mains).
(Attachment Link)

The second picture is 96 kHz span with second harmonic in the receiver bandwidth (2.7 kHz).
(Attachment Link)

The third picture is zoom with first harmonic in the receiver bandwidth (2.7 kHz).
(Attachment Link)

--- End quote ---

Was hoping for something better out of a 14 bit 300MSPS DAC at this low a frequency, which will likely get much worse as you go up in frequency.

Thanks for the testing.

Best,

radiolistener:
It has external power supply connector 5V 3A, so it can be powered from external linear power supply. External power supply can improve performance.


--- Quote from: TheDefpom on September 17, 2020, 09:35:32 am ---when it comes to user interface and functionality

--- End quote ---

Yes, front panel of PSG9080 and user interface are excellent and very convenient in use. It is very comfortable to use it.

mawyatt:

--- Quote from: radiolistener on September 17, 2020, 12:53:47 pm ---It has external power supply connector 5V 3A, so it can be powered from external linear power supply. External power supply can improve performance.


--- End quote ---

That's an interesting feature, one could power this from an external battery pack for portable use, however I doubt that an external PS will improved the output signal quality, easy enough to verify tho.

Best,

JOHN LEE:
As far as I know, the maximum output frequency of DG811 is 10MHz, the sampling rate is 125Msa/S, and there is no programmable function, which can realize automatic output. I found that PSG9080 is grounded during use, which is safer to use. PSG9080 dual-channel maximum output is 80MHz. This price is quite cost-effective. If the requirements for AWG are not high, you can also consider JDS6600. I have a JDS6600 that has been working stably for 2 years. It works very well.

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