osmo-bts.git branch laforge/avoid_ramp_spike created. 0.4.0-414-g628f530

gitosis at osmocom.org gitosis at osmocom.org
Fri Mar 24 15:08:40 UTC 2017


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The branch, laforge/avoid_ramp_spike has been created
        at  628f530b72095421a875502a6c5a11240454f6e1 (commit)

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http://cgit.osmocom.org/osmo-bts/commit/?id=628f530b72095421a875502a6c5a11240454f6e1

commit 628f530b72095421a875502a6c5a11240454f6e1
Author: Harald Welte <laforge at 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

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