The input matrix of IPPOS were fixed so that the horizaontal motion correctly shows up in X and the vertial is Y.
(what I did)
+ The data base file, QPD.db, were edited.
QPD.db is a part of the c1isxaux slow machine and it determines the input matrix for deriving the X/Y signals from each quadrant element.
+ The previous input matrix was :
X = (SEG1 + SEG4)  (SEG2 + SEG3)
Y = (SEG1 + SEG2)  (SEG3 + SEG4)
+ The new matrix which I set is :
X = (SEG1 + SEG2)  (SEG3 + SEG4)
Y = (SEG1 + SEG4)  (SEG2 + SEG3)
The new matrix is a just swap of the previous X and Y.
+ Then c1isxaux was rebooted by :
telnet c1iscaux
reboot
+ The I did the burt restore it to this morning.
Quote from #5574 
The channels for IPPOS had been assigned in a wrong way.

