|Re: Equation Library in 49G+/50G versus 48G|
Message #2 Posted by Norris on 9 Sept 2007, 2:09 p.m.,
in response to message #1 by Jeff Kearns
I have both a 48GX and and a 50G with the equation libraries, and they work identically for me. You might check the following issues:
(1) When you start the equation library, there should be three softkeys at the bottom left, marked SI, ENGL, and UNITS. The UNITS key toggles units on or off. When it's on, there's a little square on the right side of the key, so that it reads UNIT instead of UNITS. You can also toggle between SI and ENGL units, and the square shows which one is selected, although it doesn't meke any difference unless UNITS is turned on.
If you've been toggling the UNITS button, it could explain why your units sometimes disappear. If you've been toggling the SI and ENGL buttons, it could also explain why Po registers as kPa in "Pressure at Depth", because the default unit in ENGL is psi. You can see the default units for "Pressure at Depth" by pressing VARS NXT.
(2) If you've been using a particular set of equations, then switch UNITS on or off, or switch between SI and ENGL, then you have to purge the variables in the current directory for the changes to take effect. If that's not working, you might also check for any similarly-named variables in any higher directories.
For example, supppose you are using the Equation Library in a subdirectory named SUBD1 in the HOME directory. You purge all of the variables in the HOME/SUBD1 subdirectory, including variable A. But if there is also another variable A in the HOME directory, then you may still have a problem.