Cell Sync Troubleshooting
Tips on how to troubleshoot Cell Sync
This page addresses hardware and cabling issues relating to ClockWatch Cell Sync and the CDMA receiver.  You can also review the ClockWatch Server troubleshooting page for assistance with timeserver software installation and operation.

Problems with ClockWatch Cell Sync can be broken down into three categories:

Reception Problems
CDMA reception problems could be due to poor reception or cellular coverage problems.  Verify that their is CDMA cellular service is working in the location by checking with a cell phone with CDMA cellular service such as Verizon or Sprint.

Initial steps to troubleshoot a CDMA receiver with Cell Sync:

  • Check that the receiver has power. Note the green or flashing green indicator light.

  • Check the cabling between the receiver and the computer.

  • Using the CDMA Test screen in Cell Sync confirm that the receiver is working and is getting a readable signal.

Test screen showing CDMA receiver output

  • Check that you are getting CDMA cellular service where the receiver is installed

  • Check the 'LS' indicator light on the receiver. If receiving CDMA signals it should be flashing every second. Continuous “on” state indicates that the receiver is not in range of a transmitter.


PC Connection Issues
Connection problems involve the connection of the CDMA receiver to the computer which may be resolved with proper setup. The receiver requires a special data cable to connect it to the computer. 
Double check all cabling:

  • Receiver side:  check the cable connection as it plugs into the receiver.

  • PC side:  note the COM port in use. Verify it is a working serial port. Verify the com port number in the Options screen in Cell Sync. Try a different serial port if the no data can be read.

Data Output Issues
To get the time from the broadcast, the receiver must first validate the time signal.

To view the raw data output from  CDMA:

  • First, check the Setup screen to see that the CDMA model and serial port are correct. Press the 'Reset' button on the setup screen of the software if the model isn't set.

  • Open the CDMA Test screen in Cell Sync

  • Open a connection with the receiver. Cell sync creates an output file that will save data output from the receiver for later review.

  • Verify that the receiver is outputting data – the data list box should show strings of letters and numbers coming from the receiver when the connection is open.

  • Once the CDMA signal is validated then the Test screen will show the current time and date.


Other Problems


My receiver isn't working

·    Check that the antenna, data and power is connected to the receiver

·    Place the receiver along a wall or near a window.

·    Locate the receiver at least 1 or 2 meters away from any computer monitors, which can cause interference..


My clock is off by one or more hours 

·    Remember, minutes and seconds are the same in all time zones, only hours are different. If your clock is off by one or more hours, it probably has to do with a time zone setting. Make sure you have properly selected your time zone in the Windows Date/Time control panel.

·    If you live in an area that does not observe Daylight Savings Time (AZ, HI, parts of IN), make sure that DST is disabled in Windows.


The clock is off by a few minutes or seconds 

This can be due to a number of different problems:

·    Reception Problems - If your clock isn’t currently receiving the signal.  Review the setting log will show the time setting and reception history.

·    Checking your clock - There is no need to check a properly working CDMA receiver. However, you might want to check it if you suspect you have a problem. You can check your clock by using Internet time setting option in Cell Sync.



The clock switched to Daylight Saving Time, but we don't use DST at this site   

Check the "Always set clock to Standard Time (DST not used)" options on the CDMA setup screen in Cell Sync.

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Cell Sync Product Information:
  Advanced Features
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  Cell Sync CDMA Receiver
     Installation Information
     User's Guide



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Copyright © 2007 Beagle Software. All rights reserved
Last reviewed March 19, 2008