CryoElectronicsBoardHistory < CryoElectronics

---+ Cryoelectronics Board History

ID	Location	Status	Revision
Board 1	Berkeley (Liz) - sent back to McGill?	working	rev0
Board 2	McGill (James)	Working - MISSING	rev0
Board 3	Chicago (Abby)	Working	rev0
Board 4	McGill	Not Working	rev2
Board 5	Berkeley (Nibiru dewar) (PolarBear) Repaired at McGill and returned, April 2016	Working	rev2
Board 6	KEK (Japan)	Working	rev2
Board 7	!McGill	Not Working	rev2
Board 8	Tai Oshima (Aste) Japan	Working	rev2
Board 9	Vancouver (needs debugging)	Working	rev2
Board 10	Berkeley then Chile (PolarBear), shipped back to McGill repaired and returned to Berkeley Back at McGill for repairs, March 21 2016 Returned to Darcy at Berkeley, April 2016	Working	rev2
Board 11	McGill	Not Working	rev2
Board 12	Dalhousie (Scott Chapman)	Working	rev2
Board 13	(to berkeley, liz) - SPTpol	Working	rev2
Board 14	McGill	Needs repair	rev2
Board15	McGill	Working (in use)	rev2
Board16	University of Pennsylvania	Working	rev3
Board17	Chicago - SPTpol	Working	rev3
Board18	McGill	Not Working	rev3
Board19	Chicago - SPTpol	Working	rev3
Board20	Chicago - SPTpol	Working	rev3
Board21	UCSD, then Chile (POLARBEAR)	Working	rev3
Board22	South Pole - SPTpol	Working	rev3
Board23	Tai Oshima (ASTE)	Working	rev3
Board24	Case - SPTpol - needs filters	Working	rev3
Board25	Repaired at McGill, shipped to FNAL April 22, 2016	Working	rev3
Board26	McGill has this board not Tai as previously marked	Working	rev3c
Board27	Berkeley - Polarbear2 - needs filters - sent to Chile as spare	Working	rev3c
Board28	Berkeley - Polarbear2 - needs filters Currently at McGill, March 2016, for repair	In Repair	rev3c
Board29	Chicago - SPTpol	Working	rev3c
Board30	Tai	Working	rev3c
Board31	KEK	Working	rev3c
Board32	Tai	Working	rev3c
Board33	KEK	Working	rev3c
Board34	UCSD lab	Working	rev3c
Board35	Case	Working	rev3c

Destinations of boards

SPTpol requires:

5 cryoboards at pole (2 for receiver, 2 for optics, 1 spare):
1 with the 2nd receiver in North America: (liz at berkeley)
1 at case
All boards sent

Polarbear requires:

1 receiver
1 spare.
1 for San Diego
All boards sent

Aste Requires

1 board
1 spare
All boards sent

Board 1

Board is currently functioning with the optoisolators resistors at 500 ohms
Micro SD card has been hand-soldered on

Board 2

Optoisolator resistors R(73,75,77,79) are 500 ohms
R38 is still 500 ohms
Remaining optoisolator resistors are 4.05k (as originally drawn in rev0 schematics.)
A MicroSD adapter (not the slot used in rev1 boards) is hand-soldered on
The RS485 transceivers' power has been connected

Board 3

Optoisolator resistors R(21, 23, 25, 27, 29, 31, 33, 35, 38, 40, 43, 45, 47, 49, 51, 53, 73, 75, 77, 79, 82, 84, 87, 89, 91, 93, 95, 97) have been changed from 4.05k to 500 ohms.
Currently controlling the fridge in Chicago
Micro sd card has been hand-soldered on

Board 4

This board has had the following components updated:

Heaters: (x8)

C28: 6.8nc -> 470 pF
C60: 6.8nf -> 220nf
R12: 100k -> 0
R54: 100k -> 2.49k

Sense circuit: (x16)

C43: 6.8nf -> 220nF
C44: 6.8nF -> 220nF
R18: 100k -> 1k
R19: 100k -> 1k

Drive circuit: (x16)

TO DO: C13: 6.8nF -> 2.2nF
TO DO: C14: 6.8nF -> 2.2nF
C20: 6.8nF -> 220nF
R5: 100k -> 1k
R8: 100k -> 2.49k
R10: 100k -> 1k : Ran out of 1k resistances. Channels 1-4 are 2.49k instead!

A1U1 and U18 have been removed.

8C27 has been removed.

Multiple other components have been harvested.

Board 5

Drive resistors (R5, R10) changed from 1 kohm to 50 kohm. Stability verified up to G=165 (Drive gain resistor = 300 ohms or greater)

TdH Update 25Mar2015: This board suffered from huge oscillations in the drive circuit, and these were due to the wrong values of R5 and R10. They were 1 kOhm, even though they were obviously soldered on by hand. We have changed R5 and R10 to 30 kOhm for Ch1, Ch2 and Ch14 ONLY.

Board 6

Drive Resistors (R5,R10) changed from 1 kohm to 44.5 kohm.
Stability verified up to G=165 (Drive gain resistor = 300 ohms or greater)

R217 has been replaced

QC Results

Board 7

Flashed with Mar 8 2011 .bin file. Board powers up ok but can't connect through ethernet. Possible connection error through PHY

Board 8

QC Results Board 8

Board 9

Drive Resistors (R5,R10) changed from 1 kohm to 50 kohm.
QC Results Board 9

Board 10

Drive resistors (R5, R10) changed from 1 kohm to 50 kohm.

Replaced R3U8 amplifier, which had intermittent noise.

Board 11

Does not boot. No communication over RS-232. Confirm SPI programming with iMPACT
Requires R5,R10 to be changed from 1 kohm to 50 kohm

Board 12

Drive resistors (R5, R10) changed from 1 kohm to 50 kohm.
Stability verified up to G=165 (Drive gain resistor = 300 ohms or greater)

Board 13

Drive resistors (R5, R10) changed from 1 kohm to 50 kohm. QC_Results_Board_13

Board 14

Drive resistors (R5, R10) changed from 1 kohm to 50 kohm.

FPGA reattached at Telerite.

microSD connector faulty. MicroSD card needs to be held in to fully boot (still some communication errors) FIXED

GMS Sept. 2011: Apparently not. Abby's still having sporadic problems with the MicroSD slot being finicky. If / when this board makes it to McGill, please inspect it.

JRK Dec. 2013: This board was returned from Chicago. The ethernet port and clock has been burnt from high current.

Board 15

Drive resistors (R5, R10) changed from 1 kohm to 50 kohm. 7)
Stability verified up to G=165 (Drive gain resistor = 300 ohms or greater)

QC_Results_Board_15

Board 16

Drive resistors (R5, R10) changed from 1 kohm to 50 kohm.
Stability verified up to G=165 (Drive gain resistor = 300 ohms or greater)

Board 18

Drive resistors (R5, R10) changed from 1 kohm to 50 kohm. Need to verify stability.

Problem with channels 1 - 4 (all on ADC 1). ADC and U18 have been replaced. Still not working.

Isolator U22 replaced due to ploblem on pins 6,11 (ADC 1).

To do: Verify soldering on ADC A1U1 and isolators.