Spectracom NetClock 9489 - Shutting down the Unit; Issuing the HALT Command before Removing Power

The Fault lamp will be OFF, or solid orange, indicating a minor alarm, or solid
red, asserting a power-up frequency error alarm (until the disciplining state is
reached.)
For additional information, see "Status LEDs" on page8 and "Status Monitoring via Front
Panel" on page266.
4.1.2 Shutting Down the Unit
Shutting down NetClock by interrupting the AC and/or DC power supply is acceptable and
will not damage the unit.
It is, however, worthwhile to point out the differences between shutting down the unit by inter
rupting the power supply vs. gracefully shutting it down e.g., via the Web UI.
To learn more, see "Issuing the HALT Command Before Removing Power" below.
For more information on AC and DC supply power, see "Power Source Selection" on
page36.
4.1.3 Issuing the HALT Command Before Removing Power
Gracefully shutting down NetClock by using the HALT command offers the following advant
ages over shutting the unit down via the AC ON/OFF switch (see "NetClock 9400 Series Rear
Panels" on page10), or otherwise interrupting the AC or DC supply power:
The shutdown process will be logged
The System Clock will update the Real Time Clock with the latest System Time.
NetClock's file system will be synchronized, which under some circumstances will allow
for faster startup next time the unit will be powered up again.
The HALT command may be issued to the NetClock via:
the WebUI
the front panel keypad
the front panel serial port.
Note: Wait 30 seconds after entering the HALT command before removing
power.
Once the HALT process has been initiated via the WebUI or front panel, the front panel LCD
will display Power off NetClock, and the front panel LED time display will stop incrementing.
Issuing a HALT Command via the Web UI
1.
Navigate to TOOLS > SYSTEM: Reboot/Halt.
4.1 Powering Up/Shutting Down
CHAPTER 4 • NetClock User Reference Guide Rev. 16
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