Vaisala Hydromet Data Collection Platform - Manual (Page 238)

User's Guide ______________________________________________________________________
236 _________________________________________________________________ M210933EN-C
Parameters for NTP client are listed in Table 34 on page 236 .
If needed, it is possible to provide station-specific settings for the NTP
client parameters, that is, settings that override the setup values. This is
done by creating a new parameter set with the same name as the NTP
client in the setup.
Table 34 NTP Client Parameters
Parameter Use
Server 1 First NTP server to acquire time from.
Server 2 Optional backup NTP server to acquire time from.
Time tolerance Maximum allowed time error in milliseconds. If the
difference between server time and logger clock
exceeds this value, the logger clock will be
adjusted to match.
Primary interface Primary network interface for contacting the
server.
Secondary interface Optional secondary network interface for
contacting the server.
Number of datagrams to
send Number of datagrams to send for averaging the
time error.
Max roundtrip Maximum allowed roundtrip in milliseconds, that
is, the time taken from request transmission to
response reception. Datagrams with longer
roundtrip will be ignored.
Retries Number of retries in case of failure when
contacting the server.
Options Debug = List debug output to COM0; Primary
always first = Always request time first from the
primary server. If this option is not set, the QML
logger will keep using the same server as for the
previous successful time request.
NOTE If a station-specific setting for an NTP parameter is created, it must
have a proper default value, or the value must be entered during
commissioning. Any value, including empty text, will override the
value that the parameter has received from the setup.