Turn-On Log for TeleMetrum boards

2010.04.08
- First production run received from Advanced Circuits, 54 units of v1.0. 

  To be complete, each board needs:

	- add GPS patch antenna
	- add customer choice of pyro connector
	- remove C38			(wrong value, optional)
	- replace C36 with 1uF		(better value)

- sn 208
	persistent crc error problems communicating over UHF link

- sn 209
	solder bridge across C3, caused USB enumeration failure.  removed the
	short and it works ok.
	img_9568.jpg

	GPS sensitivity seems very low .. ok with off-board amplified patch

2010.04.09
- sn 210
	missing J9, installed from my parts stock.
	img_9571.jpg

	kapton tape left over baro sensor port, removed with tweezers.
	img_9572.jpg

	nominal performance

- sn 211
	U4 installed 180 degrees rotated, thus 5V supply not working, accel
	gave weird values.  Removed and replaced with fresh part.
	img_9573.jpg

	nominal performance

- sn 212
	nominal performance

2010.04.10
- sn 213
	kapton on baro

	GPS sensitivity seems low .. ok with off-board amplified patch
	after it has locked once, re-locks just fine with onboard patch

- sn 214
	kapton on baro

	nominal performance

- sn 215
	R8 appears damaged, seemed to work, but removed and replaced anyway

	persistent invalid crcs

- sn 216
	may be ok

- sn 217
	kapton on baro

- sn 218
	kapton on baro

- sn 219
	missing J9

- sn 220
	kapton on baro

- sn 221
	kapton on baro

- sn 222
	kapton on baro

- sn 223
	may be ok

- sn 224
	kapton on baro

- sn 225
	may be ok

- sn 226
	kapton on baro

- sn 227
	kapton on baro


- Summary Thoughts:
	I really don't understand the missing J9 connectors.  The empty 
	parts baggie that was in the package of stuff sent to me says 56 
	were purchased, and we only have 54 boards.  Where'd they go?  And 
	can someone explain how a big red connector that's so visually 
	obvious could be missed in QA?

	The one solder bridge and one damaged 0402 resistor found so far 
	may just be par for the course at this price/service level?

2010.04.26
- received Taoglas AP.17A.07.0040A amplified patches.  Installed one on 
  sn 208 and confirmed functionality and performance.  I still see sn 208
  exhibiting a problem where sometimes it emits 100% CRC errors over the UHF
  link and other times it's fine.  Keep this one for myself, don't ship it!

- sn 228
	+ remove kapton on baro
	+ install SMA
	+ install Tyco
	+ remove C36
	+ remove C38
	+ install C36 1uF

	1186569	
	10.06 dBm

	Nathan E Dalrymple 
	Order #123677903482987

- sn 229
	+ remove kapton on baro
	+ install SMA
	+ install screws
	+ remove C36
	+ remove C38
	+ install C36 1uF
	+ replace accel with 100g part

	1186581
	10.24 dBm

	Robert J Finch	
	Order #335810048524542