8 Apr
2017
8 Apr
'17
9:42 a.m.
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- Log -----------------------------------------------------------------
http://cgit.osmocom.org/osmo-bts/commit/?id=bbe90fd6511c9a0abdb5f41d13c5ab0…
commit bbe90fd6511c9a0abdb5f41d13c5ab0135b903f7
Author: Harald Welte <laforge(a)gnumonks.org>
Date: Fri Mar 24 10:41:04 2017 +0100
sysmobts: Don't start with 0dBm TRX output power before ramping
In case a system has a high-gain external PA (like a 40dB PA) connected
externally, we cannot simply switch the transceiver to 0 dBm in
trx_init() only to then start the ramping at much lower levels once the
PHJ completes in trx_init_compl_cb(). The result would be a short
0 + 40 dBm spike followed by later ramping. We want to avoid that
spike, particularly its associated inrush current, so let's bring up the
board with smething very conservative like -50 dBm, and then ramp from
there.
Change-Id: I0ad91fce64f65e0213c9fcfde3390ace519055db
Fixes: SYS#3259
-----------------------------------------------------------------------
Summary of changes:
include/osmo-bts/tx_power.h | 2 ++
src/common/bts.c | 2 +-
src/common/tx_power.c | 15 +++++++++++++++
src/osmo-bts-sysmo/oml.c | 6 ++++--
tests/tx_power/tx_power_test.c | 8 ++++++++
5 files changed, 30 insertions(+), 3 deletions(-)
hooks/post-receive
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Osmocom BTS-side code (Abis, scheduling, ...)