pad assemblies tested

Notes about pad assemblies we tested

NOTE: All dead channel numbers are in MCM convention, 0 - 255.

Grade = A means less than 10 channels are bad
Grade = B means more than 10 channels but less than 32 channels are bad
Grade = C means one block of 32 channels does not work
Grade = D means two blocks of 32 channels do not work
Grade = F means more than two blocks of 32 channels do not work

We accept grades A and B.

Overall summary of tested pad assemblies

total grade A's = 11
total grade B's = 1
total grade C's = 1
total grade D's = 0
total grade F's = 2
total grade ?'s = 1
total in Los Alamos to be (re)tested = 1

fraction accepted = 3/6+-.20

the channel number counts 0 to 255

pad assembly MCM pad detector date tested accept or reject?
grade dead channels
[MCM]
(detector)
{new} notes

P01 159 1776-16 16-Feb-00 accept, A (181, 223)
{233} Turn off the following channels: #0,1,50,71,181,254,255.
There are bunches of odd behaving channels. these are 49, 67, 85, 117, 179, 205, 223, 233, 241, 245. sometimes these channels work and sometimes not. most of these channels happen to be identified bad(smaller slope by 1 or 2) channels at MCM QA

P02 206 1895-14 16-Feb-00 accept, B [96~100]
(4, 22, 242, 251)
{58, 85} Turn off the following channels: #0,1,4,22,242,251,254,255.

P03 236 1896-24 16-Feb-00 reject, C (208)
{0~31} Turn off the following channels: #0,1,3,21,22,208,254,255.

P04 168 1776-11 16-Feb-00 accept, A [49, 170, 173]
(143) Turn off the following channels: #0,1,143,254,255.
3, 40, 96, 129 have small signal
46 looks like working even though it was identified dead(0 slope) at MCM QA

P05 128 1778-11 16-Feb-00 reject, F {all channels all blocks} Turn off the following channels: #0,1,63,91,188,254,255.
registance between +5VD_HM_AND_ADC and ground is about 300ohm
always gives overflows(0x3FF) for all channels all blocks

P06 215 1896-15 16-Feb-00 reject, F {all channels all blocks} Turn off the following channels: #0,1,74,247,254,255.
PECLA does not come up on pin#49
serial download fails
no data comes out of MCM

summary

total grade A's = 2

total grade B's = 1

total grade C's = 1

total grade D's = 0

total grade F's = 2

We accept grades A and B.
fraction accepted = 3/6 = 0.5 +- .20

updated 16-Feb-2000
Sangsu Ryu

the channel number counts 0 to 255 - MCM convention

pad assembly MCM pad detector date tested accept or reject?
grade dead channels
[MCM]
(detector)
{new} notes

P07 117 P1460-10 07-Mar-00 accept, A [1] (2,19,38,134,248)
{98} Turn off the following channels: 0,1,2,19,38,134,248,254,255.
Channel #98 is dead.

P08 221 P1459-03 07-Mar-00 accept, A [171] (46)
{50,171} Turn off the following channels: 0,1,46,254,255.
Channel #50 is dead. Channel #171 overflows.

P09 241 P1460-01 07-Mar-00 accept, A [] (204,238)
{} Turn off the following channels: 0,1,204,238,254,255.
All other channels look good.

P10 264 P1460-03 13-Mar-00 accept, A [] (126)
{204,238} Turn off the following channels: 0,1,126,254,255.
Channel #204 and #238 give no response - dead.

P11 272 P1460-06 13-Mar-00 accept, A [] (29,42)
{149} Turn off the following channels: 0,1,29,42,254,255.
Channel #149 gives weak response.

P12 274 P1715-05 24-Mar-00 accept, A [] (76,253)
{} Turn off the following channels: 0,1,76,253,254,255.
All other channels are good.

P13 124 P1895-05 05-Apr-00 accept, A [] (10,75,76,110,127,141)
{} Turn off the following channels: 0,1,75,76,110,127,141,254,255.
Channel #10 is dead. Generally this assembly gives noisy response, but it's probably due to the change of setup which took place on 4/4/00.

P14 130 P1895-07 05-Apr-00 hold, A??? [] (5,8,12,55,192,203)
{} Turn off the following channels: 0,1,5,8,12,55,192,203,254,255.
All other channels are alive but noisy. Setup problem? To be retested.

P15 217 P1895-04 04-Apr-00 accept, A [] (19,35,43,60,61,139,147)
{-43} Turn off the following channels: 0,1,35,60,61,139,147,254,255.
Channel #19 is dead. Channel #43 is alive.

P16 244 P1895-19 04-Apr-00 accept, A [] (66,74,141,147,148,186,188)
{32,100,-148} Turn off the following channels: 0,1,66,74,141,147,186,188,254,255.
Channel #32 and #100 are dead. Channel #148 is alive.

summary

total grade A's = 11
total grade B's = 1
total grade C's = 1
total grade D's = 0
total grade F's = 2
total grade ?'s = 1

We accept grades A and B.
fraction accepted = 12/15 = 0.8 +- .10
1 to be retested.

updated 08-Aug-2000
Toshiyuki Shiina

pad assembly	MCM	pad detector	date tested	accept or reject? grade	dead channels [MCM] (detector) {new}	notes
P01	159	1776-16	16-Feb-00	accept, A	(181, 223) {233}	Turn off the following channels: #0,1,50,71,181,254,255. There are bunches of odd behaving channels. these are 49, 67, 85, 117, 179, 205, 223, 233, 241, 245. sometimes these channels work and sometimes not. most of these channels happen to be identified bad(smaller slope by 1 or 2) channels at MCM QA
P02	206	1895-14	16-Feb-00	accept, B	[96~100] (4, 22, 242, 251) {58, 85}	Turn off the following channels: #0,1,4,22,242,251,254,255.
P03	236	1896-24	16-Feb-00	reject, C	(208) {0~31}	Turn off the following channels: #0,1,3,21,22,208,254,255.
P04	168	1776-11	16-Feb-00	accept, A	[49, 170, 173] (143)	Turn off the following channels: #0,1,143,254,255. 3, 40, 96, 129 have small signal 46 looks like working even though it was identified dead(0 slope) at MCM QA
P05	128	1778-11	16-Feb-00	reject, F	{all channels all blocks}	Turn off the following channels: #0,1,63,91,188,254,255. registance between +5VD_HM_AND_ADC and ground is about 300ohm always gives overflows(0x3FF) for all channels all blocks
P06	215	1896-15	16-Feb-00	reject, F	{all channels all blocks}	Turn off the following channels: #0,1,74,247,254,255. PECLA does not come up on pin#49 serial download fails no data comes out of MCM