Products > Test Equipment
FeelTech/FeelElec FY8300S Quick Tear Down
FeelElec:
Dear customer, we are very apologize for the trouble and thanks for your suggestion. We could accept your suggestion and replace the screws. If there is any problem with the product, please feel free to contact us.
Email: service@feelelec.com
FeelElec
nctnico:
I spot a solder bridge in the close up image of the oscillator!
grizewald:
--- Quote from: FeelElec on January 17, 2020, 09:17:15 am ---Dear customer, we are very apologize for the trouble and thanks for your suggestion. We could accept your suggestion and replace the screws. If there is any problem with the product, please feel free to contact us.
Email: service@feelelec.com
FeelElec
--- End quote ---
It would be a good idea as they currently fall out during shipping. If I hadn't noticed something rattling, who knows what a loose screw could have done!
grizewald:
--- Quote from: nctnico on January 17, 2020, 10:48:24 am ---I spot a solder bridge in the close up image of the oscillator!
--- End quote ---
If you mean the 20 pin chip just above the unpopulated 10 pin header, it's actually an HC245 bus transceiver which does the level conversion for the TTL outputs. It seems to be an intentional link between pins 17 and 18 as it was done after the PCB was assembled.
grizewald:
--- Quote from: ArthurDent on January 17, 2020, 03:47:24 am ---One thing I noticed was that the oscillator has been changed from the 50Mhz one used in the FY6X00 models to the common 10Mhz, making it much easier to modify it from using the crappy little oscillator to a much higher stability OCXO.
--- End quote ---
Well spotted! When I quickly looked at the output, I seem to remember a 10MHz sine wave being about 9.999991MHz when measured with my GPSDO timebased counter. Using a 10MHz crystal really does make it simple to add an external reference input.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version