The table macros convert the positions of three jacks into incident angle (th), sideways tilt (chi) amd height (z). The ESRF tab3 macro is used to define pseudomotors, and the input parameters are provided in userlist during spec start-up. In the following the input parameters are listed for the various devices making use of tab3.
 

Configuring tab3

The tab3 setup is somewhat involved:

• all pseudomotor names have to be added to config (G1 branch or G2/3 branch version)
• the following auxiliary macro packages have to be loaded:
• stlocalG.mac
• stlist.mac
• stchangesG.mac
• pseudo.mac
• tab3.mac
• tab3aux.mac (G1 branch or G2/3 branch version)
The order is important, since some macros of stlocal get replaced by stchanges. stlocalG  and  stchangesG  are G-line modifications of the original ESRF macros, where I appended G-line's std.mac into the files - this prevents overwriting of G-line set-up macros.
• The loading of the above macros is done by G-line macro userlist.mac
• configuration of the 3-jack tables is an involved exercise and is done by my macro tab3aux.mac, which is loaded at the end of userlist. tab3aux furthermore provides on-line documentation on the sense of rotations (tab3info) and "where" macros for each table, the names of which can be listed by wlist. Finally, tab3help lists the above mentioned macros for testing and checking the set-up. For checking out, how the conversions from jack positions to angles really work, look at the tab3 macro tab3_tf.
• All macros mentioned here are in the SPECD/umacros library of the optics computers.
• Everything is set up, so that the pseudomotors will be configured correctly after a fresh start.
• An (almost) complete description of the G-line optics motors can be found here.
• WARNING: the CHESS mmv command seems to be incompatible with the tab3 macros - other motors than intended may move! Use the ESRF mv command contained in stlocalG instead, to move multiple motors:

mv motor1 value1 [motor2 value2] [...]