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roh

  • Registered on: 02/18/2016
  • Last connection: 02/18/2019

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02/07/2019

08:01 PM E1/T1 Hardware Interface Feature #3781 (Resolved): assemble E1 interface boards
i have used 732-4670-1-ND for the BLM ferrites
the 10┬ÁH coils are a bit small for the layout ;)
all the reworks...

01/31/2019

06:01 PM OsmoTRX Bug #3775 (In Progress): properly debug limesdr usb and limesdr mini clocking requirements and osmo-trx support
05:56 PM OsmoTRX Bug #3341: osmo-trx-lms RF Envelope FAIL on LimeSDR, but not on LimeSDR-mini
new measurement series:
arfcn 5 and arfcn 871, envelope and phase. all done with limesdr mini 1.2, on external 10MHz...
05:52 PM OsmoTRX Bug #3775: properly debug limesdr usb and limesdr mini clocking requirements and osmo-trx support
gpsdo slope for reference - without and with 50ohm termination.
05:33 PM OsmoTRX Bug #3775: properly debug limesdr usb and limesdr mini clocking requirements and osmo-trx support
looking at the schematic, i think there should be proper termination for 50Ohm, but i see a lot of ringing on the inp...
04:50 PM OsmoTRX Bug #3775: properly debug limesdr usb and limesdr mini clocking requirements and osmo-trx support
there is https://github.com/myriadrf/LimeSuite/issues/244 to get more details about the required clock specifications...
04:45 PM OsmoTRX Bug #3775 (In Progress): properly debug limesdr usb and limesdr mini clocking requirements and osmo-trx support
limesdr usb and limesdr mini need a external reference clock to be used for gsm applications properly since the inter...

01/29/2019

05:30 PM OsmoTRX Bug #3342: osmo-trx-lms: low tx output power level
it seems the clockchip used on lime mini (ti LMK00105) is not happy with sinewaves and wants sharp rectangles 2V/ns o...
05:30 PM OsmoTRX Bug #3341: osmo-trx-lms RF Envelope FAIL on LimeSDR, but not on LimeSDR-mini
it seems the clockchip used on lime mini (ti LMK00105) is not happy with sinewaves and wants _sharp_ rectangles 2V/ns...

01/28/2019

03:48 PM OsmoTRX Bug #3342: osmo-trx-lms: low tx output power level
i have replicated some of these tests on a limesdr usb now. it seems it makes a minor difference if the device is fed...

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