Products > Test Equipment

FeelTech/FeelElec FY8300S Quick Tear Down

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grizewald:
Interesting! The fan in mine is a Sunon and it starts up just fine at 5V.

edigi:
This is what I've received. Maybe they've run out of their supply or found a different, even cheaper source.
If I start it by hand it can keep spinning, but it cannot start by its own from 5V (I've checked this also yesterday).
Also when running from 6V the airflow it generates converges quite strongly to nothing.

Btw. I've also noticed that it's soldered to a different place in your picture. This seems to me a rather ad-hoc cosmetical than a real solution, so I'll probably vote for ventilation holes even if I'm forced to use a different PSU because of the OCXO.

ronbot:
I got mine a few days ago, some of the mentioned issues have been factory resolved.
The rear BNC's now have a stepped hole (recessed on the inside of the back cover), so that the connector protrudes properly now... no fitment problems with BNC attachment.

Here's a shot I just took for those wondering about jitter... (please excuse my phones camera... it has noise issues)
Gen set for 10.00MHz output:
Main trigger timebase: 100ns/div
Delayed trigger timebase: 5ns/div
Delayed runs 1080ns after main trigger
Showing Envelope of 500 samples

oz2cpu:
did anyone of you measure its standby power usage ??

I did, and it is quite amazing :

https://youtu.be/Px4Wg1lgk-4

Anyone find a nice and easy fix ?
just use the rear located switch ?

radiolistener:

--- Quote from: nctnico on January 16, 2020, 01:51:24 pm ---But it isn't. Look more carefully at teardown videos of other devices and you can see the wire used for the ground has a 300V rating.

--- End quote ---

Then this is very dangerous. Because 240V mains have sine from -340V to +340V.
Wire with insulation rated for 300V definitely is not enough for 340V nominal voltage!

Sometimes, mains have up to 250V it equals to 354V amplitude voltage.
And sometimes mains can have short pulses with up to 1-2 kV.

You're needs to put that wires into additional insulation in order to avoid insulation breakdown and mains short circuit!  :-BROKE

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