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Bug #3341

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osmo-trx-lms RF Envelope FAIL on LimeSDR, but not on LimeSDR-mini

Added by laforge almost 6 years ago. Updated over 3 years ago.

Status:
Stalled
Priority:
High
Assignee:
-
Category:
LimeSDR
Target version:
-
Start date:
06/13/2018
Due date:
% Done:

90%

Spec Reference:

Description

I'm observing a strange behavior when comparing the RF envelope of osmo-trx-lms on a LimeSDR and a LimeSDR-mini.

The LimeSDR-mini envelope is within spec. Specifically, the transmit power level is at full strength before the start of the next burst.

RF envelope on LimeSDR-mini RF envelope on LimeSDR-mini (zoom)

On the LimeSDR however, the next burst/timeslot starts too late, (or the slew rate is too low?):

RF envelope on LimeSDR RF envelope on LimeSDR (zoom)

This is using the exact same versions of LimeSuite (f1e5444496923890ad7d030abef9c224c37c46cf) and osmo-trx (70621b74844a6ea08d6da5f5b1e1835b9af91771). All I'm doing is swapping the hardware and re-starting osmo-trx-lms and osmo-bts.

It's very odd, and I currently have no clue of what might be going on here.


Files

SCREEN1.BMP View SCREEN1.BMP 46.6 KB RF envelope on LimeSDR-mini laforge, 06/13/2018 01:42 PM
SCREEN2.BMP View SCREEN2.BMP 43.2 KB RF envelope on LimeSDR-mini (zoom) laforge, 06/13/2018 01:42 PM
SCREEN3.BMP View SCREEN3.BMP 48.3 KB RF envelope on LimeSDR laforge, 06/13/2018 01:42 PM
SCREEN4.BMP View SCREEN4.BMP 43.9 KB RF envelope on LimeSDR (zoom) laforge, 06/13/2018 01:42 PM
limesdr_usb_871.png View limesdr_usb_871.png 15 KB roh, 08/17/2018 05:31 PM
usrp_usb871_env.png View usrp_usb871_env.png 15.4 KB roh, 08/24/2018 02:52 PM
usrp_usb871_phase.png View usrp_usb871_phase.png 18.2 KB roh, 08/24/2018 02:52 PM
limesdr_usb_871_lms1712_env.png View limesdr_usb_871_lms1712_env.png 16.5 KB roh, 08/27/2018 04:31 PM
00001.png View 00001.png 17.6 KB weird wideband burst roh, 09/04/2018 03:13 PM
limesdr_mini_871_no_modulation.gif View limesdr_mini_871_no_modulation.gif 17.7 KB roh, 09/04/2018 03:42 PM
limesdr_mini_871_no_modulation_waveform.gif View limesdr_mini_871_no_modulation_waveform.gif 15.7 KB roh, 09/04/2018 03:42 PM
limesdr_usb_871_phase_lms1810.gif View limesdr_usb_871_phase_lms1810.gif 17.4 KB limesuite 1810 limesdr usb phase roh, 10/16/2018 04:34 PM
limesdr_usb_871_env_lms1810.gif View limesdr_usb_871_env_lms1810.gif 17.2 KB limesuite 1810 limesdr usb slope roh, 10/16/2018 04:34 PM
osmo-bts.cfg osmo-bts.cfg 687 Bytes open-bts config ptrkrysik, 10/20/2018 07:44 PM
openbsc.cfg openbsc.cfg 3.14 KB osmo-nitb config ptrkrysik, 10/20/2018 07:44 PM
osmo-trx-limesdr.cfg osmo-trx-limesdr.cfg 331 Bytes osmo-trx config ptrkrysik, 10/20/2018 07:44 PM
LimeUtil_info LimeUtil_info 360 Bytes LimeUtil --info ptrkrysik, 10/20/2018 08:14 PM
LimeQuickTest LimeQuickTest 2.02 KB ptrkrysik, 10/20/2018 08:14 PM
LimeQuicktest LimeQuicktest 2.02 KB duo_kali, 10/21/2018 03:11 AM
LimeUtil --info LimeUtil --info 651 Bytes duo_kali, 10/21/2018 03:11 AM
LimeUtil --info 1810 LimeUtil --info 1810 645 Bytes duo_kali, 10/21/2018 06:03 AM
limesdr_mini_5_env_lms1810git_extclock10.gif View limesdr_mini_5_env_lms1810git_extclock10.gif 17.3 KB roh, 01/31/2019 05:54 PM
limesdr_mini_5_env_lms1810git_extclock10_tx-att_9.gif View limesdr_mini_5_env_lms1810git_extclock10_tx-att_9.gif 16.7 KB roh, 01/31/2019 05:54 PM
limesdr_mini_5_phase_lms1810git_extclock10.gif View limesdr_mini_5_phase_lms1810git_extclock10.gif 25.7 KB roh, 01/31/2019 05:54 PM
limesdr_mini_5_phase_lms1810git_extclock10_tx-att_9.gif View limesdr_mini_5_phase_lms1810git_extclock10_tx-att_9.gif 23 KB roh, 01/31/2019 05:54 PM
limesdr_mini_871_env_lms1810git_extclock10.gif View limesdr_mini_871_env_lms1810git_extclock10.gif 17 KB roh, 01/31/2019 05:54 PM
limesdr_mini_871_env_lms1810git_extclock10_tx-att_9.gif View limesdr_mini_871_env_lms1810git_extclock10_tx-att_9.gif 17.5 KB roh, 01/31/2019 05:54 PM
limesdr_mini_871_phase_lms1810git_extclock10.gif View limesdr_mini_871_phase_lms1810git_extclock10.gif 26.4 KB roh, 01/31/2019 05:54 PM
limesdr_mini_871_phase_lms1810git_extclock10_tx-att_9.gif View limesdr_mini_871_phase_lms1810git_extclock10_tx-att_9.gif 26.1 KB roh, 01/31/2019 05:54 PM
limesdr_usb_5_env_lms1901git_extclock10_tx-att_0.gif View limesdr_usb_5_env_lms1901git_extclock10_tx-att_0.gif 17.6 KB limesuite 1901+git arfcn 5 limesdr usb roh, 02/28/2019 06:15 PM
limesdr_usb_871_env_lms1901git_extclock10_tx-att_9.gif View limesdr_usb_871_env_lms1901git_extclock10_tx-att_9.gif 17.7 KB limesuite 1901+git arfcn 871 limesdr usb 9dB attenuation roh, 02/28/2019 06:15 PM
limesdr_usb_5_env_lms1901git_extclock10_tx-att_9.gif View limesdr_usb_5_env_lms1901git_extclock10_tx-att_9.gif 17.6 KB limesuite 1901+git arfcn 5 limesdr usb 9dB attenuation roh, 02/28/2019 06:15 PM
limesdr_usb_871_env_lms1901git_extclock10_tx-att_0.gif View limesdr_usb_871_env_lms1901git_extclock10_tx-att_0.gif 17.7 KB limesuite 1901+git arfcn 871 limesdr usb roh, 02/28/2019 06:15 PM
limenet_micro_5_env_lms1904.gif View limenet_micro_5_env_lms1904.gif 17 KB roh, 06/27/2019 06:22 PM
limenet_micro_5_phase_lms1904.gif View limenet_micro_5_phase_lms1904.gif 23 KB roh, 06/27/2019 06:22 PM
limenet_micro_871_env_lms1904.gif View limenet_micro_871_env_lms1904.gif 16.7 KB roh, 06/27/2019 06:22 PM
limenet_micro_871_phase_lms1904.gif View limenet_micro_871_phase_lms1904.gif 26.4 KB roh, 06/27/2019 06:22 PM
limesdr-mini_5_env_lms1904.gif View limesdr-mini_5_env_lms1904.gif 16.9 KB roh, 06/27/2019 06:23 PM
limesdr-mini_5_phase_lms1904.gif View limesdr-mini_5_phase_lms1904.gif 21 KB roh, 06/27/2019 06:23 PM
limesdr-mini_871_env_lms1904.gif View limesdr-mini_871_env_lms1904.gif 17 KB roh, 06/27/2019 06:23 PM
limesdr-mini_871_phase_lms1904.gif View limesdr-mini_871_phase_lms1904.gif 24.8 KB roh, 06/27/2019 06:23 PM
limesdr-usb_5_env_lms1904.gif View limesdr-usb_5_env_lms1904.gif 17.3 KB roh, 06/27/2019 06:23 PM
limesdr-usb_5_phase_lms1904.gif View limesdr-usb_5_phase_lms1904.gif 22.8 KB roh, 06/27/2019 06:23 PM
limesdr-usb_871_env_lms1904.gif View limesdr-usb_871_env_lms1904.gif 16.8 KB roh, 06/27/2019 06:23 PM
limesdr-usb_871_phase_lms1904.gif View limesdr-usb_871_phase_lms1904.gif 26.5 KB roh, 06/27/2019 06:23 PM
limenet_micro_5_phase_lms1904.gif View limenet_micro_5_phase_lms1904.gif 23 KB roh, 10/04/2019 04:09 PM
limenet_micro_5_env_lms1904.gif View limenet_micro_5_env_lms1904.gif 16.6 KB roh, 10/04/2019 04:09 PM
limenet_micro_871_phase_lms1904_max_pow_red_-2.gif View limenet_micro_871_phase_lms1904_max_pow_red_-2.gif 24.3 KB roh, 10/04/2019 04:09 PM
limenet_micro_871_env_lms1904_max_pow_red_-2.gif View limenet_micro_871_env_lms1904_max_pow_red_-2.gif 16.9 KB roh, 10/04/2019 04:09 PM

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