
OnTime Clock
Installation and User Guide
Firmware Version 2
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© 2017 Inova Solutions | All rights reserved | page 21
6.3. DHCP Configuration Settings
The OnTime Clock requires these settings to properly display local time:
Setting
Description
Applies to…
Digital Analog
Time Server
Sets the primary network time server
so that the clock knows with which
computer to synchronize its time.
Time Zone
Sets the local time zone so that the
clock can display the correct local
time.
Daylight Savings
Time (DST)
Sets the DST rule so that the clock can
automatically adapt to local DST.
24-hour
Sets a 12- or 24-hour time display. The
factory default is 12 hour time.
No effect
Show/hide colon Determines whether the colon is
shown on the clock. The factory
default is to show a colon as a
separator between hours and minutes.
No effect
Table 4: DHCP Configuration Options
6.4. DHCP Configuration Test and Rollout
The recommended practice is to load the configuration string into the DHCP server and
then try it with one clock by re-booting the clock. Once you are confident that the one
clock is properly configured using these settings, you can then plug in additional clocks
to add them to the network, knowing that they will automatically receive the proper
configuration settings as well.
Note:
Clocks will retrieve the DHCP option strings periodically, including when the clock
reboots and when the DHCP lease is renewed; these will automatically be applied.
6.5. Creating a DHCP Configuration String
Table 5 describes the five settings that can be used in a configuration string when
establishing a DHCP server option for automatically configuring the clock. The format
used is
option name=option value
, with the options separated by semicolons in the
configuration string. Any of these five options can be left out of the configuration
string, in which case the local setting from the clock will be used. This string is added
to the DHCP server, as described in the next section.