Model 9289
Spectracom Corporation
NetClock/NTP Network Time Provider Instruction Manual
4-4
4.2.1 Event and Alarm Relay Outputs
The NetClock features three programmable relay outputs. The relays can be configured as
major alarms, minor alarms, or events. They can control bells, whistles, sirens or other devices
based on the event/alarm setup. Each event has an assigned start and stop time. An event
can be scheduled for daily, monthly, or specific date occurrences.
An example of a daily event schedule is to sound the siren at the fire station at noon every day
for five seconds. An example of a dated event is to schedule a test of the emergency evacuation
horns on May 9th, 2007 from 10:00 AM to 10:05 AM.
The event timer is configured using the Web UI. Relays are configurable as events or alarm
outputs. Refer to the appropriate configuration screens in Section 3 of this manual.
Event and alarm relay contacts are rated at 2.0 Amps, 30 VDC. The relays will be in the de-
energized state (refer to Figure 4-3) when power is removed, when a major alarm is present and
the relay is configured as a major alarm, or when an event is “on” and the relay is configured as
an event output.
The relay contacts can be referenced to ground by connecting to Pin G of the
Alarm Outputs connector.
Figure 4-3: Event and Alarm Relay Contacts
C
C
C
NO
NO
NO
NC
NC
NC
G
NOTE:
Relays are shown in the de-energized state (event “off”).
RELAY ONE
RELAY TWO
RELAY THREE
GROUND
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