From: rickb44 Date: Sat, 27 Sep 2014 16:32:30 +0000 (+0000) Subject: Update CHange-Log.txt X-Git-Url: http://git.whiteaudio.com/gitweb/?a=commitdiff_plain;h=1dd5467a45d422441f732e84d4218595cf4040bf;p=freetel-svn-tracking.git Update CHange-Log.txt git-svn-id: https://svn.code.sf.net/p/freetel/code@1861 01035d8c-6547-0410-b346-abe4f91aad63 --- diff --git a/smartmic/SM1000-C/Change-Log-C.txt b/smartmic/SM1000-C/Change-Log-C.txt index 52d37d89..7b58a1aa 100644 --- a/smartmic/SM1000-C/Change-Log-C.txt +++ b/smartmic/SM1000-C/Change-Log-C.txt @@ -1,5 +1,5 @@ -Change Log for SM1000-REV-B2 +Change Log for SM1000-REV-C Changes 07/22/2014 Reformatted file to fit on Schematic. Reformatted file to include Status: and status indicator. RGB 09/15/14 @@ -213,19 +213,20 @@ renumber to correct for duplicate #31 RGB 9/8/14 42. [X] added 3.9nF between U8 p3 and ground + removed some tonal noise and - Status: No action taken - What is 3n9? Will add. + Status: Added. RGB 09/26/14 43. [X] changed R39 to 2k2 + mic bias now 2.8V - Status: No Action Taken, Same as #25 RGB 09/10/14 + Status: Changed. RGB 09/26/14 -44. [O] Switcher noise reduction idea +44. [X] Switcher noise reduction idea + is there away to lock the switcher osc to a uC clock? + we could make it a multiple of ADC/DAC sample rate + thus aliasing all noise down to 0 Hz + need swicther to freerun until uC starts From data sheet, switcher freq determined by components. No ext sync capability. RGB 09/10/14 For intermittent starts, look at ext PS rise ti me? + Status: Suggested shielded inductor. RGB 09/26/14 45. [O] review jumpers and see if it makes mores sense to make them 0 ohm 0805s If you implement self test code, then you want J1, but don't ship shunt. @@ -233,7 +234,7 @@ renumber to correct for duplicate #31 RGB 9/8/14 J3 - there to remove bias from mic input. Need? Status: need decision from David. RGB 09/10/14 -46. [O] C24 closer to U1? +46. [X] C24 closer to U1? WIll move at re-route time. Status: WIll move in PCB re-layout. RGB 09/10/14 @@ -244,7 +245,7 @@ renumber to correct for duplicate #31 RGB 9/8/14 48. [X] LD2 opto-isolator footprint wrong (or maybe I ordered wrong part) My mistake. Part is 8mm pin to pin, not 6mm. - Status: Will correct footprint & PCB RGB 9/10/14 + Status: Corrected. RGB 09/26/14 49. [X] location of C51 net label DOne. @@ -359,8 +360,13 @@ Rev C PCB layout notes 2/ L1, R10, C10, C12, C11, C13 close to U1 with direct connection to p20 +<<<<<<< .mine +3/ Large labls for connectors and trimmers. Maybe single letters or +symbols so they can fit? So user doesn't have to refer to schematic +======= 3/ Large labels on PCB for connectors and trimmers. Maybe single letters or symbols so they can fit? So user doesn't have to refer to schematic +>>>>>>> .r1859 when setting up. 4/ "As per June 2001 pcd mixed signal ... " PDF