Revision 1.1
WebSwitch™ Users Manual
Sync With Server
This option allows the user to specify how often the WebSwitch Plus™ time will be synchronized
with the time server. When the submit button on this page is pressed, the WebSwitch Plus™ will
immediately synchronize with the time server. If
Daily
,
Weekly
, or
Monthly
options are selected,
WebSwitch Plus™ will thereafter re-synchronize with the time server at the period interval specified
starting at 12:00 AM (00:00). The exact time the NTP Request occurs is 12:00 AM (00:00) plus the
minute equivalent of the last two digits in the models Serial Number. For example, if the last two
digits in the model's serial number were -09, the NTP Request will occur 9 minutes after 12:00 AM.
The default value of this setting is
Once
(the unit will immediately sync with the NTP server, but will
not automatically sync again).
Sync on Power Up
When this option is set to
Yes
, WebSwitch Plus™ will be synchronized with the time server each
time it is powered. Note that if it is expected that WebSwitch Plus™ will lose power on a frequent
basis, it may be beneficial to set this option to
No
; some time servers are configured to dis-allow
access from client devices that excessively request their services. The default value of this setting is
No
.
UTC Offset
Time servers return the current time in Universal Time (GMT). It is common for many servers and
data loggers to use GMT as their official time, even when they are not located within the GMT time
zone. The default value for this field is
-7
(Mountain Standard Time). For convenience, the time can
be converted to local standard time by entering the offset here. This manual cannot include the UTC
Offset for all parts of the world, but the offset for GMT time and the four major US Time zones are
listed here.
━
GMT Time: 0
━
Eastern Standard Time: -5
━
Central Standard Time: -6
━
Mountain Standard Time: -7
━
Pacific Standard Time: -8
Daylight Savings
In many parts of the United States and in some other countries, the time is shifted forward by one
hour during the summer months. This is an effort to conserve energy by making the daylight last
longer into the evening hours. If this option is set to
Yes
, the time on WebSwitch Plus™ will
automatically be shifted forward by one hour at 12:02 AM (00:02) on the Daylight Savings Start
date
set below, and it will shift back to standard time at 12:02 AM (00:02) on the Daylight Savings End
date set below. The default setting is
Yes.
Please note that by enabling the daylight savings time adjustment, scheduled events will be
adjusted for the new time. Also note that logged data includes a time stamp based upon the current
time in the device so it is possible to duplicate log times in the spring and miss log times in the fall.
To avoid confusion, many servers and data loggers are set to remain on GMT time and do not shift
for daylight savings.
Xytronix Research & Design, Inc.
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