When you say "will not display the DAC V value", do you mean the display is blank, or it displays garbage?
Interestingly, the code that displays temperature and DAC voltage is essentially the same, the only difference being which part of the data string received from the Thunderbolt is processed, so it is hard to imagine why one would work and not the other, unless the data received from the TB is corrupted in the part that should contain the DAV value, and the conversion routine fails. If you have doubts that the serial interface may not be working (I am not sure about what missing resistor you are talking about), fix that first and try again. Looking at the serial stream with a scope may help diagnose such problem. Didier KO4BB -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of David Bobbett Sent: Wednesday, August 18, 2010 4:23 AM To: time-nuts@febo.com Subject: [time-nuts] Tbolt and iCruse readout problem - any ideas? Hi all, Having struggled in vain to solve this problem, I thought I would make a plea for help as my first posting to Time Nuts . . . so here goes! I have a Tbolt with v3.00 firmware which works fine with the Tboltmon.exe V2.60 and Lady Heather software. It also works fine with the iCruse Tbolt LCD monitor - except that the monitor will not display the "DAC V" value, all the other values are displayed without a problem. The iCruse is the later version which has had the PIC voltage conversion done, but not the RS232 input resistor mods. I have two questions really: 1) Is there a setting which I need to change in my Tbolt using Tboltmon.exe to get this to work? 2) Does anybody on Time Nuts have an iCruse which shows a negative value for the "DAC V"? As far as I can see, there are 3 options: a) there is a configuration problem, b) the iCruse doesn't display negative values for DAC V, c) my iCruse is faulty. I've pretty much run out of ideas on this one, so any suggestions would be greatly appreciated! Regards, David Bobbett, Milton Keynes, UK. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.