How to syncronizing two UmTRXs

Andrey Sviyazov andreysviyaz at
Tue Jul 23 15:05:03 UTC 2013

Hi Jiang Wenyi.

Sorry, I forget to say about cable.
You have to use UFL-UFL cable to connect X7 of all synchronized UmTRX's.
It will be simple cable in case of two UmTRX and star (in parallel) if more
then two.

Best regards,
Andrey Sviyazov.

2013/7/23 Andrey Sviyazov <andreysviyaz at>

> Hi Jiang Wenyi.
> To synchronize clock of several UmTRX you have to leave one of them in
> master mode,
> but all others must be switched to slave mode.
> Master/slave control switch for 26MHz clock is S3(MHz).
> I/O connector for 26 MHz clock is X7.
> In case of master mode X7 becomes output and input in case of slave mode.
> To set master mode turn switch S3 to the downward and to upward for the
> slave mode.
> Please find text on the PCB board to be sure.
> BTW, if you would like to use external clock source then all of UmTRX's
> must be in slave mode,
> i.e. their clock connectors must be inputs.
> Best regards,
> Andrey Sviyazov.
> 2013/7/23 jiangwy <wyjiang at>
>> **
>> Hi All,
>> I have two UmTRXs v2. How to make the clock of them syncronized?
>> ------------------------------
>>  Jiang Wenyi
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the UmTRX mailing list