You are spot on. It turned out to be the power cord to the RF front-end was pulled a little out of the socket. Wasn't enough to see it, but upon checking all connections, I found it. Wish the RF front-end (used to call it the magnet leg on the Inova) had a LED or a light letting you know it had power. Also had an issue with the RF#2 controller card which needed reseating...
Thanks,
Dan Holmes
Max T. Rogers NMR Facility
Chemistry Building
578 S. Shaw Lane room 27
East Lansing, MI 48824
Phone: (517)355-9715 ext. 387
On Feb 18, 2014, at 1:46 PM, marthadmorton_at_gmail.com wrote:
> Dan,
> As long as your magnet hasn't quenched (I shouldn't even tease about this!), I would look for a loose wire. Try all the connections between PC and console. It sounds like a communications problem to me. Since you have tried the obvious, it is time to try the less obvious.
> Good Luck,
> Martha Morton
> U of Nebraska
> Sent from my Verizon Wireless BlackBerry
>
> -----Original Message-----
> From: Daniel Holmes <holmesd5_at_msu.edu>
> Date: Mon, 17 Feb 2014 15:17:08
> To: <ammrl_at_ammrl.org>
> Subject: AMMRL: No signal on Agilent DD2
>
> Thought I'd see if anybody can help us out before we really start digging into the console. We have a 1.5 year old 500 MHz DD2 running Vnmrj3.2A which has no signal for lock, 1H, and none for the other nuclei through protune. I was functioning this morning. Have tried the usual including 'su acqproc' reboot, power cycle computer and console, as well as, a setacq. None of these helped. Did notice that even with su acqproc, I did not see it cycle on the remote status like normally (i.e. the green phase LEDs cycle through), but it still ran a 1H. Also noticed that the LEDs on the 'channel cards' never stopped cycling even during an acquisition (these are the cards in the right cabinet on the right side). Any help would be appreciated. Also posted on spinsights.
>
>
> Thanks,
> Dan Holmes
> Max T. Rogers NMR Facility
> Chemistry Building
> 578 S. Shaw Lane room 27
> East Lansing, MI 48824
>
> Phone: (517)355-9715 ext. 387
>
>
>
>
>
>
Received on Tue Feb 18 2014 - 09:40:44 MST