Yamaha DTXpress/DTXplorer/DTXtreme

Hi all,

I have an urgent problem, it will be nice if someone can give me
advice on this! Thanks in advance already.

Friday, our symphonic orchestra has a small concert in a school. Since
I am playing the timpani, and we are not able to move real timpani to
tnat school, I thought I can use my DTXpressIII. Indeed, it has two
nice timpani sounds on it, so I can bring it together with two pads
and emulate timpani with an amplifier.

So far the good part :-) The problem is the tuning. The DTXpress has
two sounds, "Timpani H" and "Timpani L". Off course I have to tune
them according to the key of the music piece to C-G, E-A, or so. I
know you can change the pitch of a sound by using the C(oarse) and
F(ine) settings, but it does not seem to work out very easy. My
electronic tuner doesn't pick up the sound. So I don't know which
pitch settings C and F belong to which note.

Did anyone do such a thing once? Does somebody has a chart which
relates tuning settings to tones? Or does someone have a suggestion
how to get my electronic tuner 'hearing' the sound?

Thanks!!!!!!
Toon