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Harald Welte gerrit-no-reply at lists.osmocom.orgHello Jenkins Builder, I'd like you to reexamine a change. Please visit https://gerrit.osmocom.org/12006 to look at the new patch set (#2). Change subject: lms: User correct scale factor for transmit samples ...................................................................... lms: User correct scale factor for transmit samples Due to (I believe) a copy+paste mistake from the USRP1 code, we were using only a scale range of up to 9830 when transmitting samples, rather than the full 16 bit signed integer range up to 32767. As a result, we were loosing almost two bits (MSBs) of resolution as well as a lot of transmit power. This changes the scale factor to 0.707 (1/sqrt(2)). Please note that the much higher DAC output level means that the analog gain should be reduced. The theoretic range of up to 73dB should not be used, but Lime Microsystems suggest a value of 61..67 dB. This can be achieved by using a "osmotrx tx-attenuation" value of 6..12 inside the osmo-bts-trx configuration file. Related: OS#3341 Related: OS#3342 Change-Id: I71702feaa11f53e7614a6938a984dd748405474a --- M Transceiver52M/device/lms/LMSDevice.h 1 file changed, 8 insertions(+), 1 deletion(-) git pull ssh://gerrit.osmocom.org:29418/osmo-trx refs/changes/06/12006/2 -- To view, visit https://gerrit.osmocom.org/12006 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-trx Gerrit-Branch: master Gerrit-MessageType: newpatchset Gerrit-Change-Id: I71702feaa11f53e7614a6938a984dd748405474a Gerrit-Change-Number: 12006 Gerrit-PatchSet: 2 Gerrit-Owner: Harald Welte <laforge at gnumonks.org> Gerrit-Reviewer: Jenkins Builder (1000002) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/gerrit-log/attachments/20181129/03264871/attachment.htm>