Mobility, Intelligent Traffic Systems
Sopers Lane, Poole, Dorset, BH17 7ER
• Perform Junction Testing (section 7.4.12)
• Extract site information for review with customer (section 7.4.14)
• When satisfied with the configuration and operation of the controller, consider
refreshing the latest restore point and retaining it so that this configuration can
be restored if necessary in future. See the ST950 User Interface Handbook
(667/HU/46000/000) for further information.
7.4.2 RTC battery backup kit
The optional battery backup kit for the RTC is provided with a lithium coin cell
(CR2032 or equivalant) that is fitted into a socket on the ST950 CPU Card. Without
this optional kit the RTC is maintained using supercaps which will provide 48hrs of
backup in the event of a power failure. If the RTC is required to be backed up for
longer periods this kit should be used and the coin cell fitted as shown below:
With the optional RTC battery backup in place the RTC backup period
will be in excess of three years. The recommended battery replacement
period is three years
Ensure that the coin cell is correctly oriented – positive side uppermost as shown in
the sequence of photos below.
Empty holder
Slide the coin cell into the holder under the positive arm as shown below.
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