R90 ONLINE USER’S MANUAL UNINTERRUPTIBLE POWER SUPPLY (UPS)
Xtreme Power Conversion Corporation (Rev 3/7/14) Page 46
Frequency setting
FREQUENCY SETTING
(Note: the information in the red box will be flashing)
When in output voltage setting press On or when in battery capacity setting press Off to go to the
frequency setting mode. The frequency line flashes as in the above image. Use the Enter button to
choose different frequency. There are 2 different frequencies - 50 or 60 Hz. Press Off or On to exit
the frequency setting (save the frequency setting), and then goes to output voltage setting or battery
capacity setting.
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