R90 ONLINE USER’S MANUAL UNINTERRUPTIBLE POWER SUPPLY (UPS)
Xtreme Power Conversion Corporation (Rev 3/7/14) Page 26
WARNING!
Wait about 5 minutes for the internal DC bus bar capacitors to be completely
discharged.
Computer Access
• Connect one end of the RS232 communications cable to a computer and the other end to the
RS232 port on the UPS
• Open the software Muser4000, and choose “system” button