American Power Conversion and S15BLK, S10, S10BLK, S15 Connecting the Components

2-14
INPUT FREQUENCY; OUTPUT FREQUENCY Screen
This screen, shown in Figure 21, shows the actual input utility voltage frequency, as
well as the actual voltage frequency being output to the connected devices.
Note:At times, the frequency values on this screen may not match, This is due
to the fact that separate circuits are used to make frequency
measurements, and there is a time delay between the two circuits for
updating this status screen. This condition is considered part of the
normal operation of the unit.
Figure 21. INPUT FREQUENCY; OUTPUT FREQUENCY Screen
Connecting the Components
Warning: Do not make telephone, cable, Ethernet, antenna, electrical, or ground
system connections during a lightning storm. Failure to comply may result in
personal injury or death.
Note: Due to the unique filtering and surge protection provided by the S10 and S15,
APC recommends connecting AV components as noted on the rear panel of the unit.
Connect your AV components as noted on the rear panel, and as defined in the
section “ REAR PANEL CONNECTORS, INDICATOR, and CIRCUIT BREAKER ”.
To ensure ground loops are eliminated, thus eliminating an audible hum through
your speaker system, ground all AV components to the GROUND SYSTEM screw
located on the rear panel of the unit.