Manual Datafox Evo 4.6 FleKey
Page 11
Date: 14.09.2021 V 04.03.17.XX
4.3.
General Hardware Information
4.3.1. Hardware equipment
The devices with hardware V4 are equipped with a flash memory. Depending on the device type or
selected option with 4 or 16 MB.
For the data, the memory is used as a quasi-ring buffer. If the complete ring buffer is written to full
without the data being retrieved, the terminal reports "Memory full", please notify the admin". No fur-
ther data is stored during this time.
Data that has already been read is gradually transferred. The entire memory is always used to mini-
mize the number of accesses per individual memory cell.
An ARM microcontroller with 32-bit technology is used.
Depending on the type of device, the device has a Goldcap capacitor for buffering the time.
This ensures that the watch continues to run correctly for up to one week if the power supply is in-
terrupted.
In other devices, such as EVO 4.3 or PZE-Master V4, a buffer battery is installed in addition to the
capacitor. With this, the watch retains its value for approx. 4 years.
The exact equipment can be found in the last chapter Technical Data.
4.3.2. Behavior in case of power failure
The device boots automatically when the power supply is switched on again.
All data that was not sent or retrieved by the application software before the power failure is stored
on the device.
These are not lost. After booting, this data is available again.
4.3.3. UPS
A corresponding UPS for the V4 hardware is in preparation.
We currently recommend equipping the devices with a POE module if a "UPS" is to be used. Then
connect the devices via a POE switch and supply the switch via a standard UPS.