From 1713b954aa13cf7059730b52926407791ce1aef0 Mon Sep 17 00:00:00 2001 From: drowe67 Date: Fri, 3 Oct 2014 21:28:00 +0000 Subject: [PATCH] change log edits after feedback from Michael git-svn-id: https://svn.code.sf.net/p/freetel/code@1874 01035d8c-6547-0410-b346-abe4f91aad63 --- smartmic/SM1000-C/Change-Log-C.txt | 24 +++++++++++++++++------- 1 file changed, 17 insertions(+), 7 deletions(-) diff --git a/smartmic/SM1000-C/Change-Log-C.txt b/smartmic/SM1000-C/Change-Log-C.txt index 0c346205..e43daa53 100644 --- a/smartmic/SM1000-C/Change-Log-C.txt +++ b/smartmic/SM1000-C/Change-Log-C.txt @@ -147,8 +147,10 @@ Status: [ O] OPEN - no action taken, [X] Complete, Schematic changes made, no J25 was added for external reset switch. Do you still want on board sw? Status: HEADER PROVIDED RGB 09/15/14 -28. [X] 1nF to filter noise across 500k R42 but very close to op-amp. +28. [ ] 100pF to filter noise across 500k R42 but very close to op-amp. Status: Added. Correct placement? RGB 9/8/14. + 4 Oct 2014; DGR Changed from 1nF to 100pF after testing with dynamic + microphone by Michael Wlid 29. [O] highly senstive net between R53 and R42 should be shorter if possible, as we are getting a lot of noise pick up. @@ -312,13 +314,14 @@ renumber to correct for duplicate #31 RGB 9/8/14 SignaLink cable will bring whatever is at the Rig Digital connector to the SM1000 Status: Implemented parallel configuration RGB 09/27/14 -63. [O] U3 (USB chip) is hot to touch, in normal operation and USB boot mode. +63. [X] U3 (USB chip) is hot to touch, in normal operation and USB boot mode. + same chip isn't hot on Discovery + suspect this is a "David error" - e.g. wrong resistors loaded, pot is also glued to PCB nearby which may be shorting and USB connector has become detached once so there may be a short. Status: Open. Needs debug. RGB 09/27/14 - + 4 Oct 2014: Michasel Wild doesn't report this issue, have concluded it a one off error on Davids board + 64. [O] Found soldering little wires to the RJ45 patch panel unwieldy. Is there a better way? Also should we separate the grounds for mic/spkr/ptt to rig? mic grounds often separate on rig connectors. Status: could use thru hole part,but would require hand soldering - extra mfg operation RGB 09/27/14 @@ -326,12 +329,19 @@ renumber to correct for duplicate #31 RGB 9/8/14 [X] load C55 & C56, both 1nF, reduced switcher noise [X] add 100nF across R40, also reduced switcher noise [X] add 100uF 6.3V electrolytic (or tant) across R40, this reduced 50Hz frame rate noise + [ ] 100nF across R45 [ ] Microphone bypass network: - [X] Add 100 ohm R in net between J3/R39 - [X] Change C32 to 100uF 6.3V electrolytic (or tant) and move to junction of 100 ohm/R39 to AVSS - [X] add 100nF across 100uF C32 - Status: A lot of new parts! + [ ] Insert new 100 ohm R in net between J3/R39 (keep 2.2k) + [ ] Change C32 to 100uF 6.3V electrolytic (or tant) and move to junction of 100 ohm/R39 to AVSS + [ ] add 100nF across 100uF C32 + J3 - 100 ohm - 2200 ohm + | + 100nF parallel with 100 uF + | + + Status: A lot of new parts! + 66. [X] Change R48 to 10k, makes level adjustment on FT817 easier. TBC on further radio testing. Status: Changed RGB 09/27/14 -- 2.25.1