Run the Vremya application. If this is your first time, the settings dialog box will appear, click “OK” to use the default settings for now. Set the clock by choosing “Set System Clock” from the “File” menu.
Settings
This explains the “Settings” dialog box. Choose “Settings…” from the “File” menu to view and modify program settings. If you are unsure about any of the options, use the default values.
NTP server — this is the NTP server that is contacted to obtain the correct time. For better performance, use a server closer to you. To find the closest server, ask your system administration or see the URL in the Information section of the Read Me.
Periodic polling interval — this is the interval at which the NTP server is polled (and clock adjusted) when Vremya is left running. If you don’t want the server to be polled regularly, select “None”.
Accept NTP broadcasts from — this allows you to receive NTP broadcasts (and have the clock adjusted) when Vremya is left running. Choosing “Server” will only accept broadcasts from the NTP server you specified. Choosing “Subnet” will allow you to receive NTP broadcasts from any host on your subnet. Caution: the “Subnet” option allows any host on your subnet to adjust your clock. If NTP broadcasts are not broadcast to you or you do not wish to receive them, select “No One”.
Wait for TCP to load — enabling this option prevents Vremya from polling the server if TCP has been not loaded. This option applies only to polling, TCP state will be ignored if you selected to receive NTP broadcasts.
Server Information
This explains the “Server Info” dialog box. Choose “Get Info…” from the “Edit” menu to view information about your NTP server. Consult RFC 2030 and related RFCs for explanations of some of the fields.
Name — this is the canonical name of the server.
Address — this is the 32-bit IP address of the server.
Stratum — this is the stratum of the NTP server as reported by the server.
Precision — this is the precision of the NTP server as reported by the server. The meaning of the value is shown in parentheses.
Reference — this is the reference the NTP server uses as reported by the server. This is either an IP number or a four character identifier for NTP versions 1 through 3. NTP version 4 defines this field differently.
Last Set — this is the time the NTP server was last updated from its reference as reported by the server. This value is in UTC or Greenwich Time, not local time.
Sync. Distance — this is the synchronization distance of the NTP server as reported by the server.
Drift Rate — this is the drift rate of the NTP server as reported by the server.
Alarm Condition — if reported by the server, this condition is indicated by a special icon.
Scripting
This explains how to control some aspects of Vremya’s behavior through an AppleScript. You should be familiar with scripting using AppleScript.
Vremya supports the required suite of events in the following way:
“run” — runs Vremya using the default preferences.
“open” — opens the specified file, which must be a Vremya 2.0 preference file. This configures Vremya with the settings specified in the file.
“print” — Vremya does not support printing.
“quit” — quits the application.
Vremya also supports the Vremya suite in the following way:
“sync” — sets the system clock using the server specified. If you do not specify a server as a parameter, the server specified in the preferences will be used.
