| Products > Test Equipment |
| FeelTech FY6600 60MHz 2-Ch VCO Function Arbitrary Waveform Signal Generator |
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| evgen.05:
Video. PCB - is blue now. |
| CDaniel:
The jitter problem wasn't checked ... in the video 5MHz for the square wave is a frequency where the jitter is not present . Same crappy power supply . Same interface . 24Vpp = exactly 2x12V power supply rails ;D , |
| radiolistener:
--- Quote from: Johnny B Good on August 04, 2019, 10:54:31 pm --- The JYEC DIP oscillator on that oscillator power board boasts a stability of +/- 0.1ppm over a a 0 to 25 deg C range and +/-0.2ppm over the -10 to +50 or 60 deg C range and, of necessity for this sort of accuracy and stability, boasts a trimmer to allow calibration against a reference frequency source such as a GPSDO. I've attached a photo of the oscillator board - it's now going spare, perhaps I can flog it as a CD player upgrade to some audiophool ;) --- End quote --- these Chinese TCXO has terrible jitter due to phase noise, because they are actually build on synthesizer. So this is not suitable for audiophiles at all :) I tested one from aliexpress: https://www.aliexpress.com/item/32794136550.html And I can clearly see synthesizer steps of frequency even with RTLSDR. That's a total shit with spurs each 2 MHz :horse: |
| jleg:
--- Quote from: rhb on August 18, 2019, 10:42:25 pm ---FYI I just sent service@feelelec.com an email asking that they replace the front panels for the 4 people I was able to identify who are forum members with borked V 3.0 units. I was able to furnish shipping information for 3 of them. I never heard from @canyon. --- End quote --- ah, so you did it again! ;) - I was a bit baffled, when a few days ago somebody from "FeelElec" sent an email with "We know your FY6600 have some problems" - 18 month after i contacted them with the complaint! They also used an email address i never used with them, which was also a bit strange for me. They wanted to have some photos (which i did already send 18 months ago), and now they want to send me "a chip which solves the problem". I will believe this when it arrived... ::) |
| rhb:
It's a bit strange that I happened to read the thread and see the post from the new person at FeelElec. I've generally not followed it much except to occasionally read Johnny B Goode's posts. When I saw it, I resent my old email to the new address. I'll believe it when everyone tells me they got the part and the unit is working, but maybe it will happen. I hope they send an entire panel and not just the chip. However, the new presence might simply be an EE at the company able to get some chips, but not able to get front panels approved by management. I've been rather baffled by their behavior as there is clearly a good market for them if they simply improve customer relations. And plenty of very fine engineering talent on offer for free. Look at where Rigol is today relative to 10 years ago. Their top line gear is definitely not hobby priced. |
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