GPS Time Synchronization

ION 7500 / ION 7600 User’s Guide

 

 

The Property Description area explains the purpose for each field.

The default time synchronization interval of 3,600 seconds (displayed in milliseconds) is acceptable for most ION installations.

NOTE

You need appropriate permissions to configure the meters on your network. Refer to the technical note

ION Security for details on software and meter security.

GPS Time Synchronization

To implement a GPS scheme, you need a dedicated serial network. If you are already using a serial link for communications with ION software, you need a second serial network to transport GPS signals.

Either RS-232 or RS-485 networks can be used for GPS time synchronization, though RS-485 is recommended if more than two meters are being synchronized. If your GPS receiver output is RS-232 use the COM32 or equivalent RS-232/RS-485 converter that does not buffer communications. The COM128 is not recommended if used in Repeater Mode.

GPS Receiver

RS-232 / RS-485

Converter

ION Network

GPS Serial Network

ION Devices

NOTE

The ION 7700 has the highest possible synchronization accuracy using communications port 1 (COM1) on the meter; however, COM2 and COM3 (via the Xpress Card) are still acceptable for time synchronization.

Configuring for GPS Time Synchronization

To implement GPS time synchronization, use Designer software to configure the Clock module and the Communications module:

1.Launch Designer and choose Show Toolbox from the Options menu if it is not already displayed. Double-click the Clock module.

2.Set the Clock module’s Clock Source setup register to COMM.

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Time Synchronization & Timekeeping Technical Note

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Multi-Tech Systems 7600, 7500 manual Configuring for GPS Time Synchronization
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