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DTR_301-D3-XX-001_EN_a
6
Accuracy
In standard the accuracy of the device is based on the built-in RTC quartz crystal oscillator. Declared accuracy
with a stable power supply and at the operating temperature of 25°C is +/- 1 minute per month.
To eliminate the RTC clock aberration (loss or gain) and increase accuracy, the device can be synchronized with
the alternative time standard. Declared in Table 1 aberration in regard to the time standard is non-recurring and
non-cumulative.
Time standard
Communication method
Aberration in regard to the time standard
NTP time server
LAN
depends on server, maximum: +/- 20 ms
Master clock
LAN
depends on accuracy of the master clock
Table 1
Notice! During the first time synchronization or resume (e.g. after signal loss), the device recovers full accuracy
after 40 to 80s.
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DHCP
The device has a DHCP client function. Thanks to this, it can automatically obtain configuration data such as
IP address, gateway IP address and subnet mask from a DHCP server (e.g. router).
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Automatic brightness control of the device
In the standard version, a lighting sensor is included. The device, in response to the ambient lighting conditions,
adjusts the brightness of the clock display.
9
Additional options
9.1
Cooperation between clocks
The device with LAN support has an option to cooperate with other clocks through the network. In this system
the Master clock is a time standard for Slave clocks. Also it controls the displayed information. Thanks to that all
the clocks show exactly the same time and type of information e.g. display the temperature simultaneously. The
cooperation is possible between different models of RGB Technology clocks.
