From kaizang at stanford.edu  Mon Oct 15 22:18:37 2012
From: kaizang at stanford.edu (Kai Zang)
Date: Mon, 15 Oct 2012 22:18:37 -0700 (PDT)
Subject: Interlock problem
In-Reply-To: <1301589354.1338092.1350364398174.JavaMail.root@stanford.edu>
Message-ID: <92876659.1341173.1350364717184.JavaMail.root@stanford.edu>

Hi all,

Has any one of you encountered a problem of interlock problem? It said 'Interlock circuit is open. Interlock circuit must be closed for setting voltage source/compliance absolute value exceeding 42V'. And we cannot conduct any measurements at all.

Thanks for your help in advance! =)

Best,
Kai

-----
Kai ZANG
Electrical Engineering
Stanford University


From shott at stanford.edu  Tue Oct 16 07:30:53 2012
From: shott at stanford.edu (John Shott)
Date: Tue, 16 Oct 2012 07:30:53 -0700
Subject: Interlock problem
In-Reply-To: <92876659.1341173.1350364717184.JavaMail.root@stanford.edu>
References: <92876659.1341173.1350364717184.JavaMail.root@stanford.edu>
Message-ID: <507D6F9D.2010109@stanford.edu>

Kai:

What voltage were you trying to use?  The B1500 has an external 
interlock cable that won't allow SMU voltages to exceed +/- 42 V unless 
the interlock is closed.  I only realized this recently ... Julie Segal 
pointed this out to me ...

We have ordered parts to attach magnetic proximity switches to the cover 
of the probe station so that the interlock will be satisfied when the 
probe station is closed (or mostly closed).  Unfortunately, while most 
of those parts will be shipped to us in the next couple of days, one of 
them won't arrive until the first week of Novemeber.

Were you trying to apply voltages higher than 42V, or were you seeing 
this error under all circumstances?

Thanks,

John


On 10/15/2012 10:18 PM, Kai Zang wrote:
> Hi all,
>
> Has any one of you encountered a problem of interlock problem? It said 'Interlock circuit is open. Interlock circuit must be closed for setting voltage source/compliance absolute value exceeding 42V'. And we cannot conduct any measurements at all.
>
> Thanks for your help in advance! =)
>
> Best,
> Kai
>
> -----
> Kai ZANG
> Electrical Engineering
> Stanford University



From kaizang at stanford.edu  Tue Oct 16 08:16:21 2012
From: kaizang at stanford.edu (Kai Zang)
Date: Tue, 16 Oct 2012 08:16:21 -0700 (PDT)
Subject: Interlock problem
In-Reply-To: <507D6F9D.2010109@stanford.edu>
Message-ID: <505277882.1592910.1350400581652.JavaMail.root@stanford.edu>

Hi John, 

I did measurement between [0V, 1V] and [-1V, 0V]. Normally it should be OK, that's why I wonder something wrong with the machine. Right before this error message showed several times but last night it keeps showing.

Thanks for your reply! =D

Best,
Kai

-----
Kai ZANG
Electrical Engineering
Stanford University

Addr:
58 Dudley Ln, Apt 108B
Stanford University
California, USA, 94305
Tel: 650-561-5095
Email: kaizang at stanford.edu

----- Original Message -----
From: "John Shott" <shott at stanford.edu>
To: "Kai Zang" <kaizang at stanford.edu>
Cc: "micromanipulator6000" <micromanipulator6000 at snf.stanford.edu>
Sent: Tuesday, October 16, 2012 7:30:53 AM
Subject: Re: Interlock problem

Kai:

What voltage were you trying to use?  The B1500 has an external 
interlock cable that won't allow SMU voltages to exceed +/- 42 V unless 
the interlock is closed.  I only realized this recently ... Julie Segal 
pointed this out to me ...

We have ordered parts to attach magnetic proximity switches to the cover 
of the probe station so that the interlock will be satisfied when the 
probe station is closed (or mostly closed).  Unfortunately, while most 
of those parts will be shipped to us in the next couple of days, one of 
them won't arrive until the first week of Novemeber.

Were you trying to apply voltages higher than 42V, or were you seeing 
this error under all circumstances?

Thanks,

John


On 10/15/2012 10:18 PM, Kai Zang wrote:
> Hi all,
>
> Has any one of you encountered a problem of interlock problem? It said 'Interlock circuit is open. Interlock circuit must be closed for setting voltage source/compliance absolute value exceeding 42V'. And we cannot conduct any measurements at all.
>
> Thanks for your help in advance! =)
>
> Best,
> Kai
>
> -----
> Kai ZANG
> Electrical Engineering
> Stanford University



From jsegal at slac.stanford.edu  Tue Oct 16 08:55:12 2012
From: jsegal at slac.stanford.edu (Segal, Julie)
Date: Tue, 16 Oct 2012 08:55:12 -0700
Subject: Interlock problem
In-Reply-To: <507D6F9D.2010109@stanford.edu>
References: <92876659.1341173.1350364717184.JavaMail.root@stanford.edu>,<507D6F9D.2010109@stanford.edu>
Message-ID: <AFD07D1BD0F1AF458A18EEDEFCAE717D014E2E614227@EXCHCLUSTER1-02.win.slac.stanford.edu>

I have noticed that sometimes the B1500 gives the message even when you are not trying to go above 42V.  Usually you can clear it (I think there is an "OK" button or something in the message) and go on, but sometimes you have to re-start the analysis software.
- Julie
________________________________________
From: John Shott [shott at stanford.edu]
Sent: Tuesday, October 16, 2012 7:30 AM
To: Kai Zang
Cc: micromanipulator6000
Subject: Re: Interlock problem

Kai:

What voltage were you trying to use?  The B1500 has an external
interlock cable that won't allow SMU voltages to exceed +/- 42 V unless
the interlock is closed.  I only realized this recently ... Julie Segal
pointed this out to me ...

We have ordered parts to attach magnetic proximity switches to the cover
of the probe station so that the interlock will be satisfied when the
probe station is closed (or mostly closed).  Unfortunately, while most
of those parts will be shipped to us in the next couple of days, one of
them won't arrive until the first week of Novemeber.

Were you trying to apply voltages higher than 42V, or were you seeing
this error under all circumstances?

Thanks,

John


On 10/15/2012 10:18 PM, Kai Zang wrote:
> Hi all,
>
> Has any one of you encountered a problem of interlock problem? It said 'Interlock circuit is open. Interlock circuit must be closed for setting voltage source/compliance absolute value exceeding 42V'. And we cannot conduct any measurements at all.
>
> Thanks for your help in advance! =)
>
> Best,
> Kai
>
> -----
> Kai ZANG
> Electrical Engineering
> Stanford University



From kaizang at stanford.edu  Tue Oct 16 09:07:49 2012
From: kaizang at stanford.edu (Kai Zang)
Date: Tue, 16 Oct 2012 09:07:49 -0700 (PDT)
Subject: Interlock problem
In-Reply-To: <AFD07D1BD0F1AF458A18EEDEFCAE717D014E2E614227@EXCHCLUSTER1-02.win.slac.stanford.edu>
Message-ID: <1429583255.1669490.1350403669225.JavaMail.root@stanford.edu>

Hi Julie,

Thanks for your suggestion. I tried restarting software and computer, enable and disable but it is not work. I also checked probe and changed two of them but they are not working as well. Before I can clear the error message, but this time it jumps out every time. ><"

Best,
Kai

-----
Kai ZANG
Electrical Engineering
Stanford University

----- Original Message -----
From: "Julie Segal" <jsegal at slac.stanford.edu>
To: "John Shott" <shott at stanford.edu>, "Kai Zang" <kaizang at stanford.edu>
Cc: "micromanipulator6000" <micromanipulator6000 at snf.stanford.edu>
Sent: Tuesday, October 16, 2012 8:55:12 AM
Subject: RE: Interlock problem

I have noticed that sometimes the B1500 gives the message even when you are not trying to go above 42V.  Usually you can clear it (I think there is an "OK" button or something in the message) and go on, but sometimes you have to re-start the analysis software.
- Julie
________________________________________
From: John Shott [shott at stanford.edu]
Sent: Tuesday, October 16, 2012 7:30 AM
To: Kai Zang
Cc: micromanipulator6000
Subject: Re: Interlock problem

Kai:

What voltage were you trying to use?  The B1500 has an external
interlock cable that won't allow SMU voltages to exceed +/- 42 V unless
the interlock is closed.  I only realized this recently ... Julie Segal
pointed this out to me ...

We have ordered parts to attach magnetic proximity switches to the cover
of the probe station so that the interlock will be satisfied when the
probe station is closed (or mostly closed).  Unfortunately, while most
of those parts will be shipped to us in the next couple of days, one of
them won't arrive until the first week of Novemeber.

Were you trying to apply voltages higher than 42V, or were you seeing
this error under all circumstances?

Thanks,

John


On 10/15/2012 10:18 PM, Kai Zang wrote:
> Hi all,
>
> Has any one of you encountered a problem of interlock problem? It said 'Interlock circuit is open. Interlock circuit must be closed for setting voltage source/compliance absolute value exceeding 42V'. And we cannot conduct any measurements at all.
>
> Thanks for your help in advance! =)
>
> Best,
> Kai
>
> -----
> Kai ZANG
> Electrical Engineering
> Stanford University



From shott at stanford.edu  Tue Oct 16 09:20:47 2012
From: shott at stanford.edu (John Shott)
Date: Tue, 16 Oct 2012 09:20:47 -0700
Subject: Interlock problem
In-Reply-To: <1429583255.1669490.1350403669225.JavaMail.root@stanford.edu>
References: <1429583255.1669490.1350403669225.JavaMail.root@stanford.edu>
Message-ID: <507D895F.4030507@stanford.edu>

Kai:

I just rebooted the B1500, went into my workspace, and ran an Id vs Vds 
"standard" test.

I first set it up with Vds max = 10 V, and it ran fine.

Then I set it up with Vds max = 50 V, and, as expected, it complained 
about the interlock.  I clicked OK.

Then I changed Vds max to 40 V, and it ran just fine.

So, following the reboot, I found that it was operating as expected.   
Let me know if your mileage still varies.

John


On 10/16/2012 9:07 AM, Kai Zang wrote:
> Hi Julie,
>
> Thanks for your suggestion. I tried restarting software and computer, enable and disable but it is not work. I also checked probe and changed two of them but they are not working as well. Before I can clear the error message, but this time it jumps out every time.><"
>
> Best,
> Kai
>
> -----
> Kai ZANG
> Electrical Engineering
> Stanford University



From kaizang at stanford.edu  Tue Oct 16 09:23:47 2012
From: kaizang at stanford.edu (Kai Zang)
Date: Tue, 16 Oct 2012 09:23:47 -0700 (PDT)
Subject: Interlock problem
In-Reply-To: <507D895F.4030507@stanford.edu>
Message-ID: <1951251652.1705740.1350404627566.JavaMail.root@stanford.edu>

Hi John,

Got it. I will try it at noon today and tell you the results. Thanks so much! =)

Best,
Kai

-----
Kai ZANG
Electrical Engineering
Stanford University

Addr:
58 Dudley Ln, Apt 108B
Stanford University
California, USA, 94305
Tel: 650-561-5095
Email: kaizang at stanford.edu

----- Original Message -----
From: "John Shott" <shott at stanford.edu>
To: "Kai Zang" <kaizang at stanford.edu>
Cc: "Julie Segal" <jsegal at slac.stanford.edu>, "micromanipulator6000" <micromanipulator6000 at snf.stanford.edu>
Sent: Tuesday, October 16, 2012 9:20:47 AM
Subject: Re: Interlock problem

Kai:

I just rebooted the B1500, went into my workspace, and ran an Id vs Vds 
"standard" test.

I first set it up with Vds max = 10 V, and it ran fine.

Then I set it up with Vds max = 50 V, and, as expected, it complained 
about the interlock.  I clicked OK.

Then I changed Vds max to 40 V, and it ran just fine.

So, following the reboot, I found that it was operating as expected.   
Let me know if your mileage still varies.

John


On 10/16/2012 9:07 AM, Kai Zang wrote:
> Hi Julie,
>
> Thanks for your suggestion. I tried restarting software and computer, enable and disable but it is not work. I also checked probe and changed two of them but they are not working as well. Before I can clear the error message, but this time it jumps out every time.><"
>
> Best,
> Kai
>
> -----
> Kai ZANG
> Electrical Engineering
> Stanford University