5. System Overview
KBox A-201/A-202 – User’s Guide (Version 1.2)
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The device is designed to be operated in:
vertical position: (KBox A-201/A-202 configuration with vertical mounting plate attached to the rear side of the
chassis or with DIN rail clip attached to the right side/cover of the chassis) mounted inside a control cabinet or
horizontal position: (KBox A-201/A-202 configuration without mounting) on a table or another flat surface
When powering on the KBox A-201/A-202, make sure that the cooling fins of the chassis (Fig. 9, Fig. 10
and Fig. 11, pos. 6) are not obstructed (covered) by any objects.
To provide sufficient heat dissipation by the cooling of the device, do not cover the cooling fins of the
KBox A-201/A-202. Do not place any objects on the device. When installing the system, please note the
clearance recommendation in the section 7.1 “System Mounting”.
5.1.
RTC
The KBox A-201/A-202 comprises a chipset internal RTC. To provide a valid date and time when no power is connected to
the KBox A-201/A-202, the RTC is equipped with a goldcap buffer.
5.1.1.
RTC Buffer Time
The RTC buffer time is depending of the ambient temperature.
If the time is not valid this is indicated by a status bit in the RTC registers.
To get the maximum buffer time it is necessary to have the system a certain time powered on. This ensures
that the buffer capacitors are fully loaded.
The buffer time depends on the ambient temperature and on how long the box is connected to its power
supply.
5.2.
System Expansion Capabilities
The KBox A-201/A-202 is available in the configurations described in this manual (chapter 10 “Technical Specification”).
If you are interested in a different, customer-specific configuration, feel free to contact Kontron and ask for your
requirements. Contact information can be found on our web site
