Difference: StatuS900 (1 vs. 28)

Revision 2802 Sep 2009 - Main.DavidCowburn

Changed:
<
<
META TOPICPARENT name="Staffarchive.NinehundredGroup"
>
>
META TOPICPARENT name="NinehundredGroup"
  10 Jun 2026 Contents:

900 spectrometers at NYSBC

Warning: Can't find topic StatuS900num2

Status of 900_1 900 Magnet MHz NMR system at NYSBC: Updated 1/1/06

STATUS: in production
  • Cryoprobe : testing complete and released for production use. There are still some issues about shim stability, however, we have a temporary work-around so that multiple-day experiments are practical.

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

DATE COMMENT
For previous closed issues, see earlier versions of this page
Sept. 2 Open Issue: Line shape stability test is not yet met. For this test the lineshape is monitored in an un-locked state. As this is followed a drift in Z1 is monitored. With autoshim on the drift in Z1 can be corrected during the experiment. Bruker has been contacted about this issue and we are working with them to resolve it.
Sept. 2 Open Issue: Autoshim has a random failure when used with gradient experiment. This issue is linke to the issue above, as autoshim is required to maintain Z1. Again we have contacted Bruker to resolve this issue.
051001 Open Issue: Discussion with B-BIO-CH about the limitations of power in the 900 cryoprobe
900 Magnet
Changed:
<
<		-- DavidCowburn? - 07 Sep 2004
>
>		-- DavidCowburn - 07 Sep 2004
 
Changed:
<
<
META FILEATTACHMENT attr="" autoattached="1" comment="Schett message confirming shipment" date="1144161380" name="900MHzCryoProbeDelivery.msg" path="900MHzCryoProbeDelivery.msg" size="26112" user="DavidCowburn" version="1.1"
META FILEATTACHMENT attr="" autoattached="1" comment="confirmation of Late Oct deliver " date="1144161380" name="Updateon900US2delivery.txt" path="Updateon900US2delivery.txt" size="448" user="DavidCowburn" version="1.1"
>
>
META FILEATTACHMENT attr="" autoattached="1" comment="Schett message confirming shipment" date="1144161380" name="900MHzCryoProbeDelivery.msg" path="900MHzCryoProbeDelivery.msg" size="26112" user="Main.DavidCowburn" version="1.1"
META FILEATTACHMENT attr="" autoattached="1" comment="confirmation of Late Oct deliver " date="1144161380" name="Updateon900US2delivery.txt" path="Updateon900US2delivery.txt" size="448" user="Main.DavidCowburn" version="1.1"
Added:
>
>
META TOPICMOVED by="DavidCowburn" date="1251901511" from="Main.StatuS900" to="Staffarchive.StatuS900"
 

Revision 2702 Sep 2009 - Main.DavidCowburn

 
META TOPICPARENT name="Staffarchive.NinehundredGroup"
10 Jun 2026 Contents:

900 spectrometers at NYSBC

Warning: Can't find topic StatuS900num2

Status of 900_1 900 Magnet MHz NMR system at NYSBC: Updated 1/1/06

STATUS: in production
  • Cryoprobe : testing complete and released for production use. There are still some issues about shim stability, however, we have a temporary work-around so that multiple-day experiments are practical.

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

DATE COMMENT
For previous closed issues, see earlier versions of this page
Sept. 2 Open Issue: Line shape stability test is not yet met. For this test the lineshape is monitored in an un-locked state. As this is followed a drift in Z1 is monitored. With autoshim on the drift in Z1 can be corrected during the experiment. Bruker has been contacted about this issue and we are working with them to resolve it.
Sept. 2 Open Issue: Autoshim has a random failure when used with gradient experiment. This issue is linke to the issue above, as autoshim is required to maintain Z1. Again we have contacted Bruker to resolve this issue.
051001 Open Issue: Discussion with B-BIO-CH about the limitations of power in the 900 cryoprobe
900 Magnet

-- DavidCowburn? - 07 Sep 2004

META FILEATTACHMENT attr="" autoattached="1" comment="Schett message confirming shipment" date="1144161380" name="900MHzCryoProbeDelivery.msg" path="900MHzCryoProbeDelivery.msg" size="26112" user="DavidCowburn" version="1.1"
META FILEATTACHMENT attr="" autoattached="1" comment="confirmation of Late Oct deliver " date="1144161380" name="Updateon900US2delivery.txt" path="Updateon900US2delivery.txt" size="448" user="DavidCowburn" version="1.1"

Revision 2602 Sep 2009 - Main.DavidCowburn

Changed:
<
<
META TOPICPARENT name="NinehundredGroup"
>
>
META TOPICPARENT name="Staffarchive.NinehundredGroup"
  10 Jun 2026 Contents:

900 spectrometers at NYSBC

Warning: Can't find topic StatuS900num2

Status of 900_1 900 Magnet MHz NMR system at NYSBC: Updated 1/1/06

STATUS: in production
  • Cryoprobe : testing complete and released for production use. There are still some issues about shim stability, however, we have a temporary work-around so that multiple-day experiments are practical.

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

DATE COMMENT
For previous closed issues, see earlier versions of this page
Sept. 2 Open Issue: Line shape stability test is not yet met. For this test the lineshape is monitored in an un-locked state. As this is followed a drift in Z1 is monitored. With autoshim on the drift in Z1 can be corrected during the experiment. Bruker has been contacted about this issue and we are working with them to resolve it.
Sept. 2 Open Issue: Autoshim has a random failure when used with gradient experiment. This issue is linke to the issue above, as autoshim is required to maintain Z1. Again we have contacted Bruker to resolve this issue.
051001 Open Issue: Discussion with B-BIO-CH about the limitations of power in the 900 cryoprobe
900 Magnet

-- DavidCowburn? - 07 Sep 2004

META FILEATTACHMENT attr="" autoattached="1" comment="Schett message confirming shipment" date="1144161380" name="900MHzCryoProbeDelivery.msg" path="900MHzCryoProbeDelivery.msg" size="26112" user="DavidCowburn" version="1.1"
META FILEATTACHMENT attr="" autoattached="1" comment="confirmation of Late Oct deliver " date="1144161380" name="Updateon900US2delivery.txt" path="Updateon900US2delivery.txt" size="448" user="DavidCowburn" version="1.1"

Revision 2519 Sep 2006 - Main.DavidCowburn

 
META TOPICPARENT name="NinehundredGroup"
10 Jun 2026 Contents:

900 spectrometers at NYSBC

Warning: Can't find topic StatuS900num2

Status of 900_1 900 Magnet MHz NMR system at NYSBC: Updated 1/1/06

STATUS: in production
Changed:
<
<
  • Cryoprobe : testing complete and released for production use. There are still some issues about shim stability, however, we have a temporary work-around so that multiple-day experiments are practical. Be advised, however, that Bruker is advising that we should be careful with 1H power levels. Currently, the maxium power level that is permissble is that power which gives a 10usec 90-degree pusle on the 0.1% EB sample. This means that for moderately salty aqueous protein sample 90-degeree pulses approaching 20usec may be observed.
>
>
  • Cryoprobe : testing complete and released for production use. There are still some issues about shim stability, however, we have a temporary work-around so that multiple-day experiments are practical.
 

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

DATE COMMENT
For previous closed issues, see earlier versions of this page
Sept. 2 Open Issue: Line shape stability test is not yet met. For this test the lineshape is monitored in an un-locked state. As this is followed a drift in Z1 is monitored. With autoshim on the drift in Z1 can be corrected during the experiment. Bruker has been contacted about this issue and we are working with them to resolve it.
Sept. 2 Open Issue: Autoshim has a random failure when used with gradient experiment. This issue is linke to the issue above, as autoshim is required to maintain Z1. Again we have contacted Bruker to resolve this issue.
051001 Open Issue: Discussion with B-BIO-CH about the limitations of power in the 900 cryoprobe
900 Magnet

-- DavidCowburn? - 07 Sep 2004

META FILEATTACHMENT attr="" autoattached="1" comment="Schett message confirming shipment" date="1144161380" name="900MHzCryoProbeDelivery.msg" path="900MHzCryoProbeDelivery.msg" size="26112" user="DavidCowburn" version="1.1"
META FILEATTACHMENT attr="" autoattached="1" comment="confirmation of Late Oct deliver " date="1144161380" name="Updateon900US2delivery.txt" path="Updateon900US2delivery.txt" size="448" user="DavidCowburn" version="1.1"

Revision 2405 Jun 2006 - Main.DavidCowburn

 
META TOPICPARENT name="NinehundredGroup"
10 Jun 2026 Contents:
Changed:
<
<

900 spectrometers at NYSBC

Warning: Can't find topic NysbC900num2

>
>

900 spectrometers at NYSBC

Warning: Can't find topic StatuS900num2

 
Changed:
<
<

Status of 900_1 900 Magnet MHz NMR system at NYSBC: Updated 1/1/06

>
>

Status of 900_1 900 Magnet MHz NMR system at NYSBC: Updated 1/1/06

 STATUS: in production
  • Cryoprobe : testing complete and released for production use. There are still some issues about shim stability, however, we have a temporary work-around so that multiple-day experiments are practical. Be advised, however, that Bruker is advising that we should be careful with 1H power levels. Currently, the maxium power level that is permissble is that power which gives a 10usec 90-degree pusle on the 0.1% EB sample. This means that for moderately salty aqueous protein sample 90-degeree pulses approaching 20usec may be observed.
Changed:
<
<

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

>
>

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

 
DATE COMMENT
For previous closed issues, see earlier versions of this page
Sept. 2 Open Issue: Line shape stability test is not yet met. For this test the lineshape is monitored in an un-locked state. As this is followed a drift in Z1 is monitored. With autoshim on the drift in Z1 can be corrected during the experiment. Bruker has been contacted about this issue and we are working with them to resolve it.
Sept. 2 Open Issue: Autoshim has a random failure when used with gradient experiment. This issue is linke to the issue above, as autoshim is required to maintain Z1. Again we have contacted Bruker to resolve this issue.
051001 Open Issue: Discussion with B-BIO-CH about the limitations of power in the 900 cryoprobe
900 Magnet
Added:
>
>		-- DavidCowburn? - 07 Sep 2004
 
Deleted:
<
<		-- DavidCowburn - 07 Sep 2004
 
Deleted:
<
<
 
META FILEATTACHMENT attr="" autoattached="1" comment="Schett message confirming shipment" date="1144161380" name="900MHzCryoProbeDelivery.msg" path="900MHzCryoProbeDelivery.msg" size="26112" user="DavidCowburn" version="1.1"
META FILEATTACHMENT attr="" autoattached="1" comment="confirmation of Late Oct deliver " date="1144161380" name="Updateon900US2delivery.txt" path="Updateon900US2delivery.txt" size="448" user="DavidCowburn" version="1.1"

Revision 2305 Jun 2006 - Main.DavidCowburn

 
META TOPICPARENT name="NinehundredGroup"
Changed:
<
<		 10 Jun 2026 Contents:

900 spectrometers at NYSBC

Status of 900#1 %9% MHz NMR system at NYSBC: Updated 10 Jun 2026

STATUS: in production
  • Cryoprobe : testing complete and released for production use. There are still some issues about shim stability, however, we have a temporary work-around so that multiple-day experiments are practical. Be advised, however, that Bruker is advising that we should be careful with 1H power levels. Currently, the maxium power level that is permissble is that power which gives a 10usec 90-degree pusle on the 0.1% EB sample. This means that for moderately salty aqueous protein sample 90-degeree pulses approaching 20usec may be observed.

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

DATE COMMENT
Jan 1 2005 Drift 13 Hz
Jan 24 Drift < 5 Hz/h , met spin echo stability test
Feb 18 Drift about 4 Hz/h; phase and gradient stability tests to be completed
March 10 CLOSED: As of 4/14/05 this problem has not re-occured since installing the new 1H LNA preamp module. Open Issue: Problem with 1H wobb. Occasional bug that requires the use of "ext50" flag. Bruker has sent a new 1H LNA preamp module. The new module seems to have corrected the problem, however it remains under evaluation.
March 10 CLOSED: As of 4/14/05 this problem has not re-occured since installing the new TCU board. Open Issue: Problem with 3 axis gradshim. We have observed an occasional bug where there is no signal in one or the other of the two echo exeriments. When this occurs gradshim fails. Bruker has sent a new TCU board. This board seems to have corrected the problem, however it remains under evaluation.
March 10 CLOSED: As of 4/14/05 this problem has not re-occured since installing the new RX22 board. Open Issue: Problem with CORTAB. Cortab fails. Bruker thinks the problem is in the RX22 receiver board, they are shipping us a new one. As a result of the implicaion of a problem with the receiver board we are evaluating if this is causing any problems during normal acquisition.
Sept. 2 Open Issue: Line shape stability test is not yet met. For this test the lineshape is monitored in an un-locked state. As this is followed a drift in Z1 is monitored. With autoshim on the drift in Z1 can be corrected during the experiment. Bruker has been contacted about this issue and we are working with them to resolve it.
Sept. 2 Open Issue: Autoshim has a random failure when used with gradient experiment. This issue is linke to the issue above, as autoshim is required to maintain Z1. Again we have contacted Bruker to resolve this issue.
%9%

Warning: Can't find topic NysbC900num2

-- DavidCowburn - 07 Sep 2004

META FILEATTACHMENT attr="" comment="confirmation of Late Oct deliver " date="1121958724" name="Updateon900US2delivery.txt" path="Update on 900 US2 delivery.txt" size="448" user="DavidCowburn" version="1.1"
META FILEATTACHMENT attr="" comment="Schett message confirming shipment" date="1124194110" name="900MHzCryoProbeDelivery.msg" path="900 MHz CryoProbe? Delivery .msg" size="26112" user="DavidCowburn" version="1.1"
>
>		 10 Jun 2026 Contents:

900 spectrometers at NYSBC

Warning: Can't find topic NysbC900num2

Status of 900_1 900 Magnet MHz NMR system at NYSBC: Updated 1/1/06

STATUS: in production
  • Cryoprobe : testing complete and released for production use. There are still some issues about shim stability, however, we have a temporary work-around so that multiple-day experiments are practical. Be advised, however, that Bruker is advising that we should be careful with 1H power levels. Currently, the maxium power level that is permissble is that power which gives a 10usec 90-degree pusle on the 0.1% EB sample. This means that for moderately salty aqueous protein sample 90-degeree pulses approaching 20usec may be observed.

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

DATE COMMENT
For previous closed issues, see earlier versions of this page
Sept. 2 Open Issue: Line shape stability test is not yet met. For this test the lineshape is monitored in an un-locked state. As this is followed a drift in Z1 is monitored. With autoshim on the drift in Z1 can be corrected during the experiment. Bruker has been contacted about this issue and we are working with them to resolve it.
Sept. 2 Open Issue: Autoshim has a random failure when used with gradient experiment. This issue is linke to the issue above, as autoshim is required to maintain Z1. Again we have contacted Bruker to resolve this issue.
051001 Open Issue: Discussion with B-BIO-CH about the limitations of power in the 900 cryoprobe
900 Magnet

-- DavidCowburn - 07 Sep 2004

META FILEATTACHMENT attr="" autoattached="1" comment="Schett message confirming shipment" date="1144161380" name="900MHzCryoProbeDelivery.msg" path="900MHzCryoProbeDelivery.msg" size="26112" user="DavidCowburn" version="1.1"
META FILEATTACHMENT attr="" autoattached="1" comment="confirmation of Late Oct deliver " date="1144161380" name="Updateon900US2delivery.txt" path="Updateon900US2delivery.txt" size="448" user="DavidCowburn" version="1.1"
 

Revision 2202 Dec 2005 - Main.MichaelGoger

 
META TOPICPARENT name="NinehundredGroup"
10 Jun 2026 Contents:

900 spectrometers at NYSBC

Status of 900#1 %9% MHz NMR system at NYSBC: Updated 10 Jun 2026

STATUS: in production
Changed:
<
<
  • Cryoprobe : testing complete and released for production use. There are still some issues about shim stability, but experiments up to 2 days seem practical.
>
>
  • Cryoprobe : testing complete and released for production use. There are still some issues about shim stability, however, we have a temporary work-around so that multiple-day experiments are practical. Be advised, however, that Bruker is advising that we should be careful with 1H power levels. Currently, the maxium power level that is permissble is that power which gives a 10usec 90-degree pusle on the 0.1% EB sample. This means that for moderately salty aqueous protein sample 90-degeree pulses approaching 20usec may be observed.
 

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

DATE COMMENT
Jan 1 2005 Drift 13 Hz
Jan 24 Drift < 5 Hz/h , met spin echo stability test
Feb 18 Drift about 4 Hz/h; phase and gradient stability tests to be completed
March 10 CLOSED: As of 4/14/05 this problem has not re-occured since installing the new 1H LNA preamp module. Open Issue: Problem with 1H wobb. Occasional bug that requires the use of "ext50" flag. Bruker has sent a new 1H LNA preamp module. The new module seems to have corrected the problem, however it remains under evaluation.
March 10 CLOSED: As of 4/14/05 this problem has not re-occured since installing the new TCU board. Open Issue: Problem with 3 axis gradshim. We have observed an occasional bug where there is no signal in one or the other of the two echo exeriments. When this occurs gradshim fails. Bruker has sent a new TCU board. This board seems to have corrected the problem, however it remains under evaluation.
March 10 CLOSED: As of 4/14/05 this problem has not re-occured since installing the new RX22 board. Open Issue: Problem with CORTAB. Cortab fails. Bruker thinks the problem is in the RX22 receiver board, they are shipping us a new one. As a result of the implicaion of a problem with the receiver board we are evaluating if this is causing any problems during normal acquisition.
Sept. 2 Open Issue: Line shape stability test is not yet met. For this test the lineshape is monitored in an un-locked state. As this is followed a drift in Z1 is monitored. With autoshim on the drift in Z1 can be corrected during the experiment. Bruker has been contacted about this issue and we are working with them to resolve it.
Sept. 2 Open Issue: Autoshim has a random failure when used with gradient experiment. This issue is linke to the issue above, as autoshim is required to maintain Z1. Again we have contacted Bruker to resolve this issue.
%9%

Warning: Can't find topic NysbC900num2

-- DavidCowburn - 07 Sep 2004

META FILEATTACHMENT attr="" comment="confirmation of Late Oct deliver " date="1121958724" name="Updateon900US2delivery.txt" path="Update on 900 US2 delivery.txt" size="448" user="DavidCowburn" version="1.1"
META FILEATTACHMENT attr="" comment="Schett message confirming shipment" date="1124194110" name="900MHzCryoProbeDelivery.msg" path="900 MHz CryoProbe? Delivery .msg" size="26112" user="DavidCowburn" version="1.1"

Revision 2128 Nov 2005 - Main.DavidCowburn

 
META TOPICPARENT name="NinehundredGroup"
10 Jun 2026 Contents:

900 spectrometers at NYSBC

Status of 900#1 %9% MHz NMR system at NYSBC: Updated 10 Jun 2026

STATUS: in production
Changed:
<
<
  • Cryoprobe : testing complete and released for production use. There are still some issues about shim stability, but experimetns up to 2 days seem practical.
>
>
  • Cryoprobe : testing complete and released for production use. There are still some issues about shim stability, but experiments up to 2 days seem practical.
 

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

DATE COMMENT
Jan 1 2005 Drift 13 Hz
Jan 24 Drift < 5 Hz/h , met spin echo stability test
Feb 18 Drift about 4 Hz/h; phase and gradient stability tests to be completed
March 10 CLOSED: As of 4/14/05 this problem has not re-occured since installing the new 1H LNA preamp module. Open Issue: Problem with 1H wobb. Occasional bug that requires the use of "ext50" flag. Bruker has sent a new 1H LNA preamp module. The new module seems to have corrected the problem, however it remains under evaluation.
March 10 CLOSED: As of 4/14/05 this problem has not re-occured since installing the new TCU board. Open Issue: Problem with 3 axis gradshim. We have observed an occasional bug where there is no signal in one or the other of the two echo exeriments. When this occurs gradshim fails. Bruker has sent a new TCU board. This board seems to have corrected the problem, however it remains under evaluation.
March 10 CLOSED: As of 4/14/05 this problem has not re-occured since installing the new RX22 board. Open Issue: Problem with CORTAB. Cortab fails. Bruker thinks the problem is in the RX22 receiver board, they are shipping us a new one. As a result of the implicaion of a problem with the receiver board we are evaluating if this is causing any problems during normal acquisition.
Sept. 2 Open Issue: Line shape stability test is not yet met. For this test the lineshape is monitored in an un-locked state. As this is followed a drift in Z1 is monitored. With autoshim on the drift in Z1 can be corrected during the experiment. Bruker has been contacted about this issue and we are working with them to resolve it.
Sept. 2 Open Issue: Autoshim has a random failure when used with gradient experiment. This issue is linke to the issue above, as autoshim is required to maintain Z1. Again we have contacted Bruker to resolve this issue.
%9%

Warning: Can't find topic NysbC900num2

-- DavidCowburn - 07 Sep 2004

META FILEATTACHMENT attr="" comment="confirmation of Late Oct deliver " date="1121958724" name="Updateon900US2delivery.txt" path="Update on 900 US2 delivery.txt" size="448" user="DavidCowburn" version="1.1"
META FILEATTACHMENT attr="" comment="Schett message confirming shipment" date="1124194110" name="900MHzCryoProbeDelivery.msg" path="900 MHz CryoProbe? Delivery .msg" size="26112" user="DavidCowburn" version="1.1"

Revision 2011 Nov 2005 - Main.DavidCowburn

 
META TOPICPARENT name="NinehundredGroup"
10 Jun 2026 Contents:

900 spectrometers at NYSBC

Status of 900#1 %9% MHz NMR system at NYSBC: Updated 10 Jun 2026

STATUS: in production
Changed:
<
<
  • Cryoprobe : in installation and testing.
>
>
  • Cryoprobe : testing complete and released for production use. There are still some issues about shim stability, but experimetns up to 2 days seem practical.
 

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

DATE COMMENT
Jan 1 2005 Drift 13 Hz
Jan 24 Drift < 5 Hz/h , met spin echo stability test
Feb 18 Drift about 4 Hz/h; phase and gradient stability tests to be completed
March 10 CLOSED: As of 4/14/05 this problem has not re-occured since installing the new 1H LNA preamp module. Open Issue: Problem with 1H wobb. Occasional bug that requires the use of "ext50" flag. Bruker has sent a new 1H LNA preamp module. The new module seems to have corrected the problem, however it remains under evaluation.
March 10 CLOSED: As of 4/14/05 this problem has not re-occured since installing the new TCU board. Open Issue: Problem with 3 axis gradshim. We have observed an occasional bug where there is no signal in one or the other of the two echo exeriments. When this occurs gradshim fails. Bruker has sent a new TCU board. This board seems to have corrected the problem, however it remains under evaluation.
March 10 CLOSED: As of 4/14/05 this problem has not re-occured since installing the new RX22 board. Open Issue: Problem with CORTAB. Cortab fails. Bruker thinks the problem is in the RX22 receiver board, they are shipping us a new one. As a result of the implicaion of a problem with the receiver board we are evaluating if this is causing any problems during normal acquisition.
Sept. 2 Open Issue: Line shape stability test is not yet met. For this test the lineshape is monitored in an un-locked state. As this is followed a drift in Z1 is monitored. With autoshim on the drift in Z1 can be corrected during the experiment. Bruker has been contacted about this issue and we are working with them to resolve it.
Sept. 2 Open Issue: Autoshim has a random failure when used with gradient experiment. This issue is linke to the issue above, as autoshim is required to maintain Z1. Again we have contacted Bruker to resolve this issue.
%9%

Warning: Can't find topic NysbC900num2

-- DavidCowburn - 07 Sep 2004

META FILEATTACHMENT attr="" comment="confirmation of Late Oct deliver " date="1121958724" name="Updateon900US2delivery.txt" path="Update on 900 US2 delivery.txt" size="448" user="DavidCowburn" version="1.1"
META FILEATTACHMENT attr="" comment="Schett message confirming shipment" date="1124194110" name="900MHzCryoProbeDelivery.msg" path="900 MHz CryoProbe? Delivery .msg" size="26112" user="DavidCowburn" version="1.1"

Revision 1931 Oct 2005 - Main.DavidCowburn

 
META TOPICPARENT name="NinehundredGroup"
10 Jun 2026 Contents:

900 spectrometers at NYSBC

Status of 900#1 %9% MHz NMR system at NYSBC: Updated 10 Jun 2026

STATUS: in production
Changed:
<
<
  • Cryoprobe : due August 2005
>
>
  • Cryoprobe : in installation and testing.
Deleted:
<
<

  • Cryoprobe installation is scheduled for Oct 17th.
 

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

DATE COMMENT
Jan 1 2005 Drift 13 Hz
Jan 24 Drift < 5 Hz/h , met spin echo stability test
Feb 18 Drift about 4 Hz/h; phase and gradient stability tests to be completed
March 10 CLOSED: As of 4/14/05 this problem has not re-occured since installing the new 1H LNA preamp module. Open Issue: Problem with 1H wobb. Occasional bug that requires the use of "ext50" flag. Bruker has sent a new 1H LNA preamp module. The new module seems to have corrected the problem, however it remains under evaluation.
March 10 CLOSED: As of 4/14/05 this problem has not re-occured since installing the new TCU board. Open Issue: Problem with 3 axis gradshim. We have observed an occasional bug where there is no signal in one or the other of the two echo exeriments. When this occurs gradshim fails. Bruker has sent a new TCU board. This board seems to have corrected the problem, however it remains under evaluation.
March 10 CLOSED: As of 4/14/05 this problem has not re-occured since installing the new RX22 board. Open Issue: Problem with CORTAB. Cortab fails. Bruker thinks the problem is in the RX22 receiver board, they are shipping us a new one. As a result of the implicaion of a problem with the receiver board we are evaluating if this is causing any problems during normal acquisition.
Sept. 2 Open Issue: Line shape stability test is not yet met. For this test the lineshape is monitored in an un-locked state. As this is followed a drift in Z1 is monitored. With autoshim on the drift in Z1 can be corrected during the experiment. Bruker has been contacted about this issue and we are working with them to resolve it.
Sept. 2 Open Issue: Autoshim has a random failure when used with gradient experiment. This issue is linke to the issue above, as autoshim is required to maintain Z1. Again we have contacted Bruker to resolve this issue.
%9%

Warning: Can't find topic NysbC900num2

-- DavidCowburn - 07 Sep 2004

META FILEATTACHMENT attr="" comment="confirmation of Late Oct deliver " date="1121958724" name="Updateon900US2delivery.txt" path="Update on 900 US2 delivery.txt" size="448" user="DavidCowburn" version="1.1"
META FILEATTACHMENT attr="" comment="Schett message confirming shipment" date="1124194110" name="900MHzCryoProbeDelivery.msg" path="900 MHz CryoProbe? Delivery .msg" size="26112" user="DavidCowburn" version="1.1"

Revision 1802 Sep 2005 - Main.MichaelGoger

 
META TOPICPARENT name="NinehundredGroup"
10 Jun 2026 Contents:

900 spectrometers at NYSBC

Status of 900#1 %9% MHz NMR system at NYSBC: Updated 10 Jun 2026

STATUS: in production
  • Cryoprobe : due August 2005

Added:
>
>
  • Cryoprobe installation is scheduled for Oct 17th.
 

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

DATEdown COMMENT
Feb 18 Drift about 4 Hz/h; phase and gradient stability tests to be completed
Jan 1 2005 Drift 13 Hz
Jan 24 Drift < 5 Hz/h , met spin echo stability test
Changed:
<
<
March 10 Open Issue: Problem with 1H wobb. Occasional bug that requires the use of "ext50" flag. Bruker has sent a new 1H LNA preamp module. The new module seems to have corrected the problem, however it remains under evaluation. CLOSED: As of 4/14/05 this problem has not re-occured since installing the new 1H LNA preamp module.
March 10 Open Issue: Problem with 3 axis gradshim. We have observed an occasional bug where there is no signal in one or the other of the two echo exeriments. When this occurs gradshim fails. Bruker has sent a new TCU board. This board seems to have corrected the problem, however it remains under evaluation. CLOSED: As of 4/14/05 this problem has not re-occured since installing the new TCU board.
March 10 Open Issue: Problem with CORTAB. Cortab fails. Bruker thinks the problem is in the RX22 receiver board, they are shipping us a new one. As a result of the implicaion of a problem with the receiver board we are evaluating if this is causing any problems during normal acquisition. . CLOSED: As of 4/14/05 this problem has not re-occured since installing the new RX22 board.
>
>
March 10 CLOSED: As of 4/14/05 this problem has not re-occured since installing the new 1H LNA preamp module. Open Issue: Problem with 1H wobb. Occasional bug that requires the use of "ext50" flag. Bruker has sent a new 1H LNA preamp module. The new module seems to have corrected the problem, however it remains under evaluation.
March 10 CLOSED: As of 4/14/05 this problem has not re-occured since installing the new TCU board. Open Issue: Problem with 3 axis gradshim. We have observed an occasional bug where there is no signal in one or the other of the two echo exeriments. When this occurs gradshim fails. Bruker has sent a new TCU board. This board seems to have corrected the problem, however it remains under evaluation.
March 10 CLOSED: As of 4/14/05 this problem has not re-occured since installing the new RX22 board. Open Issue: Problem with CORTAB. Cortab fails. Bruker thinks the problem is in the RX22 receiver board, they are shipping us a new one. As a result of the implicaion of a problem with the receiver board we are evaluating if this is causing any problems during normal acquisition.
Added:
>
>
Sept. 2 Open Issue: Line shape stability test is not yet met. For this test the lineshape is monitored in an un-locked state. As this is followed a drift in Z1 is monitored. With autoshim on the drift in Z1 can be corrected during the experiment. Bruker has been contacted about this issue and we are working with them to resolve it.
Sept. 2 Open Issue: Autoshim has a random failure when used with gradient experiment. This issue is linke to the issue above, as autoshim is required to maintain Z1. Again we have contacted Bruker to resolve this issue.
 %9%

Warning: Can't find topic NysbC900num2

-- DavidCowburn - 07 Sep 2004

META FILEATTACHMENT attr="" comment="confirmation of Late Oct deliver " date="1121958724" name="Updateon900US2delivery.txt" path="Update on 900 US2 delivery.txt" size="448" user="DavidCowburn" version="1.1"
META FILEATTACHMENT attr="" comment="Schett message confirming shipment" date="1124194110" name="900MHzCryoProbeDelivery.msg" path="900 MHz CryoProbe? Delivery .msg" size="26112" user="DavidCowburn" version="1.1"

Revision 1716 Aug 2005 - Main.DavidCowburn

 
META TOPICPARENT name="NinehundredGroup"
10 Jun 2026 Contents:

900 spectrometers at NYSBC

Status of 900#1 %9% MHz NMR system at NYSBC: Updated 10 Jun 2026

STATUS: in production
  • Cryoprobe : due August 2005
Added:
>
>
 

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

DATE COMMENT
Jan 1 2005 Drift 13 Hz
Jan 24 Drift < 5 Hz/h , met spin echo stability test
Feb 18 Drift about 4 Hz/h; phase and gradient stability tests to be completed
March 10 Open Issue: Problem with 1H wobb. Occasional bug that requires the use of "ext50" flag. Bruker has sent a new 1H LNA preamp module. The new module seems to have corrected the problem, however it remains under evaluation. CLOSED: As of 4/14/05 this problem has not re-occured since installing the new 1H LNA preamp module.
March 10 Open Issue: Problem with 3 axis gradshim. We have observed an occasional bug where there is no signal in one or the other of the two echo exeriments. When this occurs gradshim fails. Bruker has sent a new TCU board. This board seems to have corrected the problem, however it remains under evaluation. CLOSED: As of 4/14/05 this problem has not re-occured since installing the new TCU board.
March 10 Open Issue: Problem with CORTAB. Cortab fails. Bruker thinks the problem is in the RX22 receiver board, they are shipping us a new one. As a result of the implicaion of a problem with the receiver board we are evaluating if this is causing any problems during normal acquisition. . CLOSED: As of 4/14/05 this problem has not re-occured since installing the new RX22 board.
%9%

Warning: Can't find topic NysbC900num2

-- DavidCowburn - 07 Sep 2004

Added:
>
>
 
META FILEATTACHMENT attr="" comment="confirmation of Late Oct deliver " date="1121958724" name="Updateon900US2delivery.txt" path="Update on 900 US2 delivery.txt" size="448" user="DavidCowburn" version="1.1"
Added:
>
>
META FILEATTACHMENT attr="" comment="Schett message confirming shipment" date="1124194110" name="900MHzCryoProbeDelivery.msg" path="900 MHz CryoProbe? Delivery .msg" size="26112" user="DavidCowburn" version="1.1"
 

Revision 1602 Aug 2005 - Main.DavidCowburn

 
META TOPICPARENT name="NinehundredGroup"
10 Jun 2026 Contents:

900 spectrometers at NYSBC

Status of 900#1 %9% MHz NMR system at NYSBC: Updated 10 Jun 2026

STATUS: in production
  • Cryoprobe : due August 2005

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

DATE COMMENT
Jan 1 2005 Drift 13 Hz
Jan 24 Drift < 5 Hz/h , met spin echo stability test
Feb 18 Drift about 4 Hz/h; phase and gradient stability tests to be completed
March 10 Open Issue: Problem with 1H wobb. Occasional bug that requires the use of "ext50" flag. Bruker has sent a new 1H LNA preamp module. The new module seems to have corrected the problem, however it remains under evaluation. CLOSED: As of 4/14/05 this problem has not re-occured since installing the new 1H LNA preamp module.
March 10 Open Issue: Problem with 3 axis gradshim. We have observed an occasional bug where there is no signal in one or the other of the two echo exeriments. When this occurs gradshim fails. Bruker has sent a new TCU board. This board seems to have corrected the problem, however it remains under evaluation. CLOSED: As of 4/14/05 this problem has not re-occured since installing the new TCU board.
March 10 Open Issue: Problem with CORTAB. Cortab fails. Bruker thinks the problem is in the RX22 receiver board, they are shipping us a new one. As a result of the implicaion of a problem with the receiver board we are evaluating if this is causing any problems during normal acquisition. . CLOSED: As of 4/14/05 this problem has not re-occured since installing the new RX22 board.
%9%

Warning: Can't find topic NysbC900num2

-- DavidCowburn - 07 Sep 2004

META FILEATTACHMENT attr="" comment="confirmation of Late Oct deliver " date="1121958724" name="Updateon900US2delivery.txt" path="Update on 900 US2 delivery.txt" size="448" user="DavidCowburn" version="1.1"

Revision 1526 Jul 2005 - Main.DavidCowburn

 
META TOPICPARENT name="NinehundredGroup"
10 Jun 2026 Contents:

900 spectrometers at NYSBC

Status of 900#1 %9% MHz NMR system at NYSBC: Updated 10 Jun 2026

STATUS: in production
Added:
>
>
  • Cryoprobe : due August 2005
 

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

DATE COMMENT
Jan 1 2005 Drift 13 Hz
Jan 24 Drift < 5 Hz/h , met spin echo stability test
Feb 18 Drift about 4 Hz/h; phase and gradient stability tests to be completed
March 10 Open Issue: Problem with 1H wobb. Occasional bug that requires the use of "ext50" flag. Bruker has sent a new 1H LNA preamp module. The new module seems to have corrected the problem, however it remains under evaluation. CLOSED: As of 4/14/05 this problem has not re-occured since installing the new 1H LNA preamp module.
March 10 Open Issue: Problem with 3 axis gradshim. We have observed an occasional bug where there is no signal in one or the other of the two echo exeriments. When this occurs gradshim fails. Bruker has sent a new TCU board. This board seems to have corrected the problem, however it remains under evaluation. CLOSED: As of 4/14/05 this problem has not re-occured since installing the new TCU board.
March 10 Open Issue: Problem with CORTAB. Cortab fails. Bruker thinks the problem is in the RX22 receiver board, they are shipping us a new one. As a result of the implicaion of a problem with the receiver board we are evaluating if this is causing any problems during normal acquisition. . CLOSED: As of 4/14/05 this problem has not re-occured since installing the new RX22 board.
%9%

Warning: Can't find topic NysbC900num2

-- DavidCowburn - 07 Sep 2004

META FILEATTACHMENT attr="" comment="confirmation of Late Oct deliver " date="1121958724" name="Updateon900US2delivery.txt" path="Update on 900 US2 delivery.txt" size="448" user="DavidCowburn" version="1.1"

Revision 1421 Jul 2005 - Main.DavidCowburn

 
META TOPICPARENT name="NinehundredGroup"
10 Jun 2026 Contents:

900 spectrometers at NYSBC

Status of 900#1 %9% MHz NMR system at NYSBC: Updated 10 Jun 2026

STATUS: in production

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

DATE COMMENT
Jan 1 2005 Drift 13 Hz
Jan 24 Drift < 5 Hz/h , met spin echo stability test
Feb 18 Drift about 4 Hz/h; phase and gradient stability tests to be completed
March 10 Open Issue: Problem with 1H wobb. Occasional bug that requires the use of "ext50" flag. Bruker has sent a new 1H LNA preamp module. The new module seems to have corrected the problem, however it remains under evaluation. CLOSED: As of 4/14/05 this problem has not re-occured since installing the new 1H LNA preamp module.
March 10 Open Issue: Problem with 3 axis gradshim. We have observed an occasional bug where there is no signal in one or the other of the two echo exeriments. When this occurs gradshim fails. Bruker has sent a new TCU board. This board seems to have corrected the problem, however it remains under evaluation. CLOSED: As of 4/14/05 this problem has not re-occured since installing the new TCU board.
March 10 Open Issue: Problem with CORTAB. Cortab fails. Bruker thinks the problem is in the RX22 receiver board, they are shipping us a new one. As a result of the implicaion of a problem with the receiver board we are evaluating if this is causing any problems during normal acquisition. . CLOSED: As of 4/14/05 this problem has not re-occured since installing the new RX22 board.
%9%

Warning: Can't find topic NysbC900num2

-- DavidCowburn - 07 Sep 2004

Added:
>
>

META FILEATTACHMENT attr="" comment="confirmation of Late Oct deliver " date="1121958724" name="Updateon900US2delivery.txt" path="Update on 900 US2 delivery.txt" size="448" user="DavidCowburn" version="1.1"
 

Revision 1308 Jun 2005 - Main.DavidCowburn

 
META TOPICPARENT name="NinehundredGroup"
10 Jun 2026 Contents:

900 spectrometers at NYSBC

Status of 900#1 %9% MHz NMR system at NYSBC: Updated 10 Jun 2026

STATUS: in production

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

DATE COMMENT
Jan 1 2005 Drift 13 Hz
Jan 24 Drift < 5 Hz/h , met spin echo stability test
Feb 18 Drift about 4 Hz/h; phase and gradient stability tests to be completed
March 10 Open Issue: Problem with 1H wobb. Occasional bug that requires the use of "ext50" flag. Bruker has sent a new 1H LNA preamp module. The new module seems to have corrected the problem, however it remains under evaluation. CLOSED: As of 4/14/05 this problem has not re-occured since installing the new 1H LNA preamp module.
March 10 Open Issue: Problem with 3 axis gradshim. We have observed an occasional bug where there is no signal in one or the other of the two echo exeriments. When this occurs gradshim fails. Bruker has sent a new TCU board. This board seems to have corrected the problem, however it remains under evaluation. CLOSED: As of 4/14/05 this problem has not re-occured since installing the new TCU board.
March 10 Open Issue: Problem with CORTAB. Cortab fails. Bruker thinks the problem is in the RX22 receiver board, they are shipping us a new one. As a result of the implicaion of a problem with the receiver board we are evaluating if this is causing any problems during normal acquisition. . CLOSED: As of 4/14/05 this problem has not re-occured since installing the new RX22 board.
%9%

Warning: Can't find topic NysbC900num2

-- DavidCowburn - 07 Sep 2004

Revision 1227 May 2005 - Main.DavidCowburn

 
META TOPICPARENT name="NinehundredGroup"
10 Jun 2026
Changed:
<
<		%9%

Status of 900 MHz NMR system at NYSBC: Updated 10 Jun 2026

STATUS: TESTING, transitioning to production

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stabilizing. Various console issues are being pursued.

>
>		Contents:

900 spectrometers at NYSBC

Added:
>
>

Status of 900#1 %9% MHz NMR system at NYSBC: Updated 10 Jun 2026

STATUS: in production

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

 
DATE COMMENT
Jan 1 2005 Drift 13 Hz
Jan 24 Drift < 5 Hz/h , met spin echo stability test
Feb 18 Drift about 4 Hz/h; phase and gradient stability tests to be completed
March 10 Open Issue: Problem with 1H wobb. Occasional bug that requires the use of "ext50" flag. Bruker has sent a new 1H LNA preamp module. The new module seems to have corrected the problem, however it remains under evaluation. CLOSED: As of 4/14/05 this problem has not re-occured since installing the new 1H LNA preamp module.
March 10 Open Issue: Problem with 3 axis gradshim. We have observed an occasional bug where there is no signal in one or the other of the two echo exeriments. When this occurs gradshim fails. Bruker has sent a new TCU board. This board seems to have corrected the problem, however it remains under evaluation. CLOSED: As of 4/14/05 this problem has not re-occured since installing the new TCU board.
March 10 Open Issue: Problem with CORTAB. Cortab fails. Bruker thinks the problem is in the RX22 receiver board, they are shipping us a new one. As a result of the implicaion of a problem with the receiver board we are evaluating if this is causing any problems during normal acquisition. . CLOSED: As of 4/14/05 this problem has not re-occured since installing the new RX22 board.
%9%
Added:
>
>

Warning: Can't find topic NysbC900num2

 -- DavidCowburn - 07 Sep 2004

Revision 1111 May 2005 - Main.DavidCowburn

Changed:
<
<		 Revision 10 is unreadable
>
>
META TOPICPARENT name="NinehundredGroup"
10 Jun 2026 %9%

Status of 900 MHz NMR system at NYSBC: Updated 10 Jun 2026

STATUS: TESTING, transitioning to production

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stabilizing. Various console issues are being pursued.

DATE COMMENT
Jan 1 2005 Drift 13 Hz
Jan 24 Drift < 5 Hz/h , met spin echo stability test
Feb 18 Drift about 4 Hz/h; phase and gradient stability tests to be completed
March 10 Open Issue: Problem with 1H wobb. Occasional bug that requires the use of "ext50" flag. Bruker has sent a new 1H LNA preamp module. The new module seems to have corrected the problem, however it remains under evaluation. CLOSED: As of 4/14/05 this problem has not re-occured since installing the new 1H LNA preamp module.
March 10 Open Issue: Problem with 3 axis gradshim. We have observed an occasional bug where there is no signal in one or the other of the two echo exeriments. When this occurs gradshim fails. Bruker has sent a new TCU board. This board seems to have corrected the problem, however it remains under evaluation. CLOSED: As of 4/14/05 this problem has not re-occured since installing the new TCU board.
March 10 Open Issue: Problem with CORTAB. Cortab fails. Bruker thinks the problem is in the RX22 receiver board, they are shipping us a new one. As a result of the implicaion of a problem with the receiver board we are evaluating if this is causing any problems during normal acquisition. . CLOSED: As of 4/14/05 this problem has not re-occured since installing the new RX22 board.
%9%

-- DavidCowburn - 07 Sep 2004

Revision 1014 Apr 2005 - Main.MichaelGoger

Changed:
<
<		 Revision 9 is unreadable
>
>		 Revision 10 is unreadable

Revision 911 Apr 2005 - Main.DavidCowburn

Changed:
<
<		 Revision 8 is unreadable
>
>		 Revision 9 is unreadable

Revision 828 Mar 2005 - Main.DavidCowburn

Changed:
<
<		 Revision 7 is unreadable
>
>		 Revision 8 is unreadable

Revision 710 Mar 2005 - Main.DavidCowburn

Added:
>
>		 Revision 7 is unreadable
Deleted:
<
<		 10 Jun 2026

Status of 900 MHz NMR system at NYSBC: Updated 10 Jun 2026

STATUS: TESTING

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stabilizing. Various console issues are being pursued.

DATE COMMENT
Jan 1 2005 Drift 13 Hz
Jan 24 Drift < 5 Hz/h , met spin echo stability test
Feb 18 Drift about 4 Hz/h; phase and gradient stability tests to be completed
March 10 Open Issue: Problem with 1H wobb. Occasional bug that requires the use of "ext50" flag. Bruker has sent a new 1H LNA preamp module. The new module seems to have corrected the problem, however it remains under evaluation.
March 10 Open Issue: Problem with 3 axis gradshim. We have oberserved an occasional bug where there is no signal in one or the other of the two echo exeriments. When this occurs gradshim fails. Bruker has sent a new TCU board. This board seems to have corrected the problem, however it remains under evaluation.
March 10 Open Issue: Problem with CORTAB. Cortab fails. Bruker thinks the problem is in the RX22 receiver board, they are shipping us a new one. As a result of the implicaion of a problem with the receiver board we are evaluating if this is causing any problems during normal acquisition.

-- DavidCowburn - 07 Sep 2004

Revision 610 Mar 2005 - Main.MichaelGoger

  10 Jun 2026
Changed:
<
<

Status of 900 MHz NMR system at NYSBC

>
>

Status of 900 MHz NMR system at NYSBC: Updated 10 Jun 2026

Added:
>
>

STATUS: TESTING

 

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stabilizing. Various console issues are being pursued.

DATE COMMENT
Jan 1 2005 Drift 13 Hz
Jan 24 Drift < 5 Hz/h , met spin echo stability test
Changed:
<
<
Feb 18 Drift about 3 Hz/h; phase and gradient stability tests to be completed
>
>
Feb 18 Drift about 4 Hz/h; phase and gradient stability tests to be completed
Added:
>
>
March 10 Open Issue: Problem with 1H wobb. Occasional bug that requires the use of "ext50" flag. Bruker has sent a new 1H LNA preamp module. The new module seems to have corrected the problem, however it remains under evaluation.
March 10 Open Issue: Problem with 3 axis gradshim. We have oberserved an occasional bug where there is no signal in one or the other of the two echo exeriments. When this occurs gradshim fails. Bruker has sent a new TCU board. This board seems to have corrected the problem, however it remains under evaluation.
March 10 Open Issue: Problem with CORTAB. Cortab fails. Bruker thinks the problem is in the RX22 receiver board, they are shipping us a new one. As a result of the implicaion of a problem with the receiver board we are evaluating if this is causing any problems during normal acquisition.
 

-- DavidCowburn - 07 Sep 2004

Revision 518 Feb 2005 - Main.cowburn

  10 Jun 2026

Status of 900 MHz NMR system at NYSBC

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stabilizing. Various console issues are being pursued.

DATE COMMENT
Jan 1 2005 Drift 13 Hz
Jan 24 Drift < 5 Hz/h , met spin echo stability test
Added:
>
>
Feb 18 Drift about 3 Hz/h; phase and gradient stability tests to be completed
 

-- DavidCowburn - 07 Sep 2004

Revision 425 Jan 2005 - Main.DavidCowburn

  10 Jun 2026

Status of 900 MHz NMR system at NYSBC

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stabilizing. Various console issues are being pursued.

DATE COMMENT
Jan 1 2005 Drift 13 Hz
Added:
>
>
Jan 24 Drift < 5 Hz/h , met spin echo stability test
 

-- DavidCowburn - 07 Sep 2004

Revision 304 Jan 2005 - Main.DavidCowburn

  10 Jun 2026

Status of 900 MHz NMR system at NYSBC

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stabilizing. Various console issues are being pursued.

Added:
>
>
DATE COMMENT
Jan 1 2005 Drift 13 Hz
 

-- DavidCowburn - 07 Sep 2004

Revision 217 Dec 2004 - Main.DavidCowburn

  10 Jun 2026

Status of 900 MHz NMR system at NYSBC

Changed:
<
<

The magnet is at field at 900.27 MHz, and is being cryoshimmed

>
>

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stabilizing. Various console issues are being pursued.

 

-- DavidCowburn - 07 Sep 2004

Revision 115 Dec 2004 - Main.DavidCowburn

  10 Jun 2026

Status of 900 MHz NMR system at NYSBC

The magnet is at field at 900.27 MHz, and is being cryoshimmed

-- DavidCowburn - 07 Sep 2004

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