APC S15 Operations Instructions download pdf (Page 41)

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LOW Sensitivity — should be used when the UPS frequently goes to battery (even

though the utility voltage appears normal). Example: If the unit goes ON

BATTERY when your power amplifier is turned on.

Figure 23. SENSITIVITY (HIGH) Setting Screen

DISPLAY DIMMER Setting — lets you set a brightness level for the VFD of

HIGH, LOW, or OFF. Use the SETUP push button to advance to the Display

Dimmer screen (Figure 24). Once the display is shown, repeatedly pressing the Up

or Down Arrow push button allows you to set the brightness of the display. Once

the Display brightness is at the desired value, press the SETUP push button to store

that setting.

Figure 24. DISPLAY DIMMER (HIGH) Setting Screen

LED DIMMER Setting — lets you set a brightness level for the front-panel light

emitting diode (LED) indicators of HIGH, LOW, or OFF. Use the SETUP push

button to advance to the LED DIMMER screen (not shown). Once the display is

shown, pressing the Up/Down Arrow push button allows you to set the brightness of

the LEDs.

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APC S15 Operations Instructions Page 41