1 [[!meta title="Grr Multimodes"]]
2 [[!meta date="2008-07-07 18:54:09"]]
3 There was some trouble with tapping-mode imaging this morning, and with Prof.
4 Yang's help things seem to be straightened out now. I tried both Nanoscopes
5 with both Multimodes (we have two *nominally* identical systems), but had not
6 bothered to swap heads. As it turned out, we had been using the infrared head
7 (we have three heads), which wasn't working. Not that that was the only
8 problem. As it turned out, tapping seems to be working with the combination
10 Nanoscope 2 -- Multimode 1 -- Head 1 or 2
13 As far as I can tell, the problem is generating the voltage for the piezo that
14 vibrates the cantilever, which seems to take place
15 [on the Multimode main board](http://www.physics.drexel.edu/~wking/rsrch/multimode/internals.shtml). Unless
16 something is seriously wrong with the Nanoscope, it shouldn't matter which
17 Nanoscope we use. I suppose I should trace the Nanoscope-Multimode
18 communication in both cases and look for something different.
20 I've no idea how generating a tunable sine wave can be so complicated. The
21 simple solution is to stick to *modular* equipment with open-standard,
22 easily-accessible communication between them, but I don't have time to develop
23 a system like that. Some day I will give up on Nanoscope troubleshooting and
24 build a [GXSM system](http://gxsm.sourceforge.net/).