EVK-M10QSAM - User guide
4.5 Safe boot button
This button is used to set the receiver into safeboot mode. In this mode, the receiver executes only
the minimal functionality.
The safeboot mode is not recommended in EVK-M10QSAM because the u-blox M10 receiver is
using a ROM-based firmware and thus, it is not necessary to go into safe boot mode.
4.6 LED
On the front side of the EVK unit, a single blue LED shows the time pulse signal as well as the status
that the device is powered on. The LED starts flashing one pulse per second during a GNSS fix. If
there is no GNSS fix, the LED will only be lit, without flashing.
4.7 Backup Battery
There is a backup battery in the evaluation unit. This is necessary to store orbital information
between operations and to enable faster start-up. It is a RENATA 3.0 V Li /
MnO²
battery of the type
CR2450. The battery has a rated capacity of 540 mA. The battery operating temperature range is
-40° C to +85° C. In case the built-in backup battery runs low or empty after a long storage period,
purchase the above described battery for replacement.
CAUTION
Risk of explosion if battery is replaced by an incorrect type. Make sure that battery is
of the correct specification.
CAUTION
Risk of short circuit when touching the battery with conducting parts. Do not use
conductive parts to remove or touch the battery.
4.8 External interrupt
On the EVK-M10QSAM, the external interrupt (EXTINT) signal is available on the 14-pin connector.
The EXTINT signal can be used for time mark and time aiding features of the receiver, as well as for
waking up the receiver from power save modes. See section
UBX-22026860 - R01
4 Device description
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