18. Common Reference System
18-2
18.2 Controlling Common Reference System
If the system has dual workstation, the following dialog box appears when choosing the Initial Settings menu, which
may be opened by moving the cursor onto the workstation mode indication and pushing the right mouse button.
1.
2.
3.
1. Usage rights: The following options are available to request usage rights:
• Master: Only this workstation can be used to make selections for the monitoring mode (for example, route
monitor, user chart monitoring mode, etc.) and system use (for example, navigation sensors, ARPA target
source, etc.).
• Plan: Only this workstation can access the planning mode (i.e., the other workstation is used for selections
for the monitoring mode and system use).
• Multi: This workstation shares usage rights in order to make selections for the monitoring mode and
system use with the other Workstation set as Multi. Note that this is only a request for shared operation. If
any other Workstation has been chosen as Master, then you do not get Multi usage rights, but Slave usage
rights. The difference between Slave and Plan usage rights is that Plan retains that status but Slave will be
changed to Multi, if the current workstation holding Master usage rights is changed from Master to any
other alternative.
2. Sensor source: This box shows the Workstation into which all the navigation sensors are connected. If you
have a fully redundant system where all the sensors are connected to all workstations, you can choose which
workstation is used as a sensor source.
3. Mode: Normally, in a multi-workstation environment, this selection should always be “Multi workstation”. The
alternative selection is “Single workstation” and it is used for two purposes:
• If you do not have more than one workstation powered, then this workstation is chosen for “single
workstation” mode.
• If you want to use this workstation of your system temporarily as a totally independent separate
workstation, then choose “Single workstation” mode. Note that during the “Single workstation” mode the
system does not use the common reference system concept, since everything you do is not shared by the
other workstation.
Switching between single mode and multi mode
The operator may change the operating mode to “single” or “multi”. Switch to single mode when conducting SENC
conversion of S57 or C-MAP CM-93/2 charts. (All stations must be in the single mode in SENC conversion.)
1. Right-click MULTI in the information area.
2. Check Usage Rights and change from Multi(slave) to Master.
3. Check Mode and change from Multi Workstation to Single Workstation.
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