APC CP16 IP Phone User Manual


 
7
Alarm Silence Button
The audible alarms may be silenced by utilizing the dual function Replace Battery/Alarm Silence
LED/button
/ .
Function Button Operation
(Press and hold for:)
Description
Replace Battery-
Temporarily
Enable/Disable
<4 seconds
If the alarm has been silenced, the unit will
emit one quick beep. If the alarm has been
enabled, two quick beeps will be emitted.
Replace Battery-
Permanently
Enable/Disable
8-12 seconds
If the alarm has been silenced, the unit will
emit one quick beep. If the alarm has been
enabled, two quick beeps will be emitted.
Battery Self-Test-
Enable/Disable
4-8 seconds
If the self-test has been enabled, three beeps
will be emitted. If the self-test cannot be
enabled, a single beep will be emitted.* If the
battery self-test has been canceled, the unit
will emit four beeps.
*A battery self-test cannot be enabled unless the following conditions have been met.
1. Battery has been charged for at least 31 hours.
2. The unit has been on utility power for more than 12 hours.
3. Temperature is between 0 and 50°C.
Output Power and Communication Signals
The PowerShield communication signals are isolated from its internal circuitry via open collector
opto-coupled transistors. The connection labeled “Signal Return” is a common return point for all
communication signals. In the typical application, the attached equipment digital ground connects to
Signal Return, and pull-up resistors turn the open collector signals into logic levels.
+Voltage output
Voltage output
Signal return.
Low when operating from utility line. Open when operating from
battery.
Low when battery is charged. Open when battery fails the Self-Test.
Low when battery is present. Open when battery is missing.
Low when battery is near full charge capacity. Open when operating
from a battery with less than 20% of available runtime remaining.