Model 9289
Spectracom Corporation
NetClock/NTP Network Time Provider Instruction Manual
7-4
Figure 7-2: System Modem Configuration Screen, Client Mode
After selecting Client mode, submitting the change, and returning to the Modem Configuration
screen, the user may configure the modem through the Web UI:
Primary/Secondary Time Source:
The modem can be configured as either the primary
reference or a secondary/back-up reference. In the Secondary/Back-up mode of operation, all
GPS antenna problem alarms (indicating a short or open in the antenna cable) and SNMP traps
associated with the GPS reference input will be fully enabled. By contrast, when Primary Time
Source is selected, the antenna problem alarm and associated SNMP traps for the antenna will
not be generated. No indication of a problem with the GPS cable will be present or available.
The Client mode of operation does not affect the ability to receive GPS.
NOTE:
If a unit initially operates without a GPS reference and primary mode of operation is
selected, and a GPS antenna is later connected, the mode of operation should be
changed to Secondary Time Source. This enables the GPS antenna problem alarms,
which can be used in troubleshooting the system.
Summary of Contents for 9289
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