Products > Test Equipment
JunTek PSG9080 Programmable Signal Generator (80 MHz - 300 MSa/s - 14-bit)
Neper:
--- Quote from: ptluis on October 14, 2021, 11:38:23 am ---Correct PSG9080 it's better than fy6800 cleaner waveform from what I saw in video reviews, apart from jitter, amplitude stability and wave distortion was solved by using a linear power supply made from a old transformer and some 7812, 7912 and 7805 linear regulators.
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I'm running my 9080 with an external linear PSU connected to the 5 V DC input. Its built-in PSU injects far too much noise back into the mains.
--- Quote ---I find out who manufactures PG9080, Hangzhou Junce Instruments Co., and did you know they are releasing a new brand name for their FG? ready? JunCtek :palm: This chinese guys don't realise what words can do to a product :-DD
--- End quote ---
My favourite is still Rigol. Supposedly from the French 'rigoler' or 'rigolo'.
radiolistener:
--- Quote from: Neper on October 16, 2021, 03:27:49 pm ---I'm running my 9080 with an external linear PSU connected to the 5 V DC input. Its built-in PSU injects far too much noise back into the mains.
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I power it from a USB 10000 mAh power bank. But it consume high current, about 0.9-1.5 Amps, it depends on selected mode and selected amplitude, so it needs good thick power cable. With cheap Chinese thin cables voltage drop is too high and you can see that display is dimmed.
Interesting, does someone tried to install bipolar linear power supply for output driver to disable it's onboard DC/DC converters?
ledtester:
FWIW, a video by Jerry Walker comparing the harmonics and noise floor of a couple of different signal generators including the PSG9080, a SDG1020, TTi TGR1040 and Rhode and Schwarz SMIQ 02B.
Juntek PSG9080 Harmonics Comparison -- Jerry Walker
https://youtu.be/Vq6sbQ_OCAs
fjalvingh:
Just for posterity: I finally managed to resurrect my bricked Juntek PSG9080, as follows:
* Switch off AC power at the back
* Keep the 8 on the keypad pressed then switch on AC power, keep 8 presse
* Keep 8 pressed and press the ON button
* Release the 8.
This should now show a bootloader on the screen. Connect to USB, press 1, and update with the files attached to this message and the Juntek upgrade tool. You need to run both files: one is for the MCU, the other for the FPGA.
Thanks a lot to this post for the method to access the bootloader > https://www.eevblog.com/forum/testgear/joy-it-psg-9080-firmware-failure/msg4559212/#msg4559212
torch:
--- Quote from: gwideman on January 24, 2021, 02:49:51 pm ---In case it's of interest to readers:
There's a Koolertron CJDS98 which appears to be the same as this Juntek 9080.
If you download the zip file software and docs package pointed to by the Koolertron vendor on amazon.com, it contains a manual titled PSG9080, and showing a picture of the Juntek.
Of course "same" is relative, as there could well be hardware and firmware variations.
--- End quote ---
There is a separate, Koolertron branded, manual. It's hosted on the same IP address as the Juntek manual. The manuals are virtually identical inside.
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