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WatchDog-15 User Manual
rev. A1.02 – Sept.24, 2012
Assigning an IP Address (Network configuration settings):
The
Network
block of settings is where you
configure the WatchDog-15’s IP address and network
settings. The unit’s MAC address is also shown here.
As shipped from the factory, the unit defaults to a
static IP address of
192.168.123.123
, using the
public DNS servers operated by Google at
8.8.8.8
and
8.8.4.4
. Any of these settings can be changed to
suit your particular network and internet service’s
requirements. Once you have typed in the desired address settings, click the
Save Changes
button to make them
take effect. Note that once you click
Save Changes
, any changes you made to these settings will take effect
instantly. If you changed the
IP Address
setting, your browser will not be able to reload this page from the “old”
address any more, and will probably display a “page not found” or “host unavailable” message. This is normal;
just type the unit’s new address into the browser’s address field and the WatchDog-15’s display should return as
usual.
If you prefer, you can also use DHCP to have the WatchDog-15 acquire the IP address and DNS settings from
your network router automatically. (Note that you must have at least one router on your network which is
configured to hand out IP addresses via DHCP lease for this feature to work.) To enable this feature, simply set
the
Enable DHCP
checkbox and click
Save Changes
. Note that once the WatchDog-15 has been told to get its
address via DHCP, it will keep trying endlessly to acquire an address via this method and will no longer be
accessible on any previously-set IP address; if no DHCP service is available on your network and the WatchDog-
15 is unable to acquire a new address, you will need to use the
IP Reset
button to regain access to the unit.
Setting the real-time clock:
The
Time
settings block is where you can set the unit’s real-time clock. The clock can either be set manually,
or it can automatically sync itself to an NTP time server, depending on the
Mode
setting.
In
Manual
mode, the time is set by filling in the
Date
,
Month
,
Year
,
Hour
,
Minutes
, and
Seconds
fields,
as shown here. The time is shown in a 24-hour format;
i.e. 8AM would be represented as 08:00:00, while 8PM
would be 20:00:00. Clicking
Save Changes
immediately sets the clock to the values typed into these
fields.
In NTP mode, the WatchDog-15 will try to keep its
clock synchronized to an NTP time server. This server
can either be on your internal network, or it can be a publicly-accessible NTP service such as
ntp.pool.org
.
In this mode, the manual time-setting fields described above are greyed out and ignored. The
Server
field
specifies the NTP time server to be used, while the
Sync Period
field determines how frequently the WatchDog-
15 will poll the NTP service to keep the clock synchronized.
In either mode, the time is always set in GMT (Greenwich Mean Time). To convert this to your local time,
set the appropriate
GMT Offset
(specified as + or – the appropriate amount in hours and minutes, i.e.
–05:00
for
U.S Eastern Standard Time,
+10:00
for East Australia Time, etc.) for your particular time zone. Note: the
WatchDog-15 does not automatically compensate for Daylight-Savings Time changes, so you will need to change
the GMT Offset manually if you wish to have the unit show the correct local time when DST is in effect.
Also note that the unit will not begin logging data to memory until the clock is set.
