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6600M: USB cable disables itself randomly

Holger Hannemann
Holger Hannemann Member ✭✭
edited June 2020 in FLEX-6000 Signature Series
I use the C232HM-EDHSL-0 cable without any USB  hub in the middle to control band switching devices for filters/antennas. The 6600M randomly disables the USB cable when transmitting resulting in undefined status of switches, no antenna connected etc. It happened on multiple bands and already caused relays to weld in one of the 2 x 6 switches since a 500 W amp was involved. Thanks god the amp survived. 

To correct it I need to disable and enable again the USB cable in the flex menu. The cable is still shown as enabled even so it doesn't work. The Flex-6600M and the mentioned USB cable are the only new components in the shack. All other switching hardware and amplifiers were in use before for a few years.

Anyone else with similar experience and any advice?

thanks in advance
Holger, ZL3IO

Answers

  • Steve K9ZW
    Steve K9ZW Member ✭✭✭
    edited August 2019
    Stations find the USB connection robust and steady. Sounds like signals are spanking some part of the USB connection. Perhaps try some additional TX RFI protection (toroids)? 73 Steve K9ZW Blog: http://k9zw.wordpress.com
  • DL4RCE
    DL4RCE Member ✭✭✭
    edited June 2020
  • Mike-VA3MW
    Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator admin
    edited August 2019
    Hi Holger

    You have some good ideas above.  One other idea would be a new USB/RS232 FTDI cable.  It might have a hardware issue.

    Mike
  • Mike NN9DD
    Mike NN9DD Member ✭✭
    edited October 2019
    Agreed not all usb connectors are created equal. FTDI chip for sure is a must Mike NN9DD
  • Mike-VA3MW
    Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator admin
    edited August 2019
    Flex only supports FTDI chipsets.  No other chipset will function for those devices connected directly to the back of the radio.
  • Warren-K6WKW
    Warren-K6WKW Member
    edited August 2019
  • Holger Hannemann
    Holger Hannemann Member ✭✭
    edited August 2019
  • Holger Hannemann
    Holger Hannemann Member ✭✭
    edited August 2019
  • DL4RCE
    DL4RCE Member ✭✭✭
    edited June 2020

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