EVK-M8T User Guide
UBX-14041540 - R05
Device description
Page 10 of 22
Early Production Information
4.3.8
LED
On the front panel of the unit, a single blue LED shows the time pulse 1 signal. The LED starts flashing
one pulse per second during a GNSS fix. If there is no GNSS fit, the LED will only light, without
flashing.
4.3.9
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 / MnO
²
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.
If the built-in backup battery runs low or is empty after a long storage period, purchase the battery
described above for replacement (refer to the section 10 for battery replacement guidelines).
⚠
CAUTION! RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE. DISPOSE
OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS!
4.3.10
GNSS Configuration
The EVK-M8T supports GPS, QZSS, Galileo, GLONASS, and BeiDou.
The GNSS to be used can be configured on u-center (View
Messages View then UBX-CFG-GNSS).
For more information, refer to the
u-center User Guide
[5], the
u-blox 8 / u-blox M8 Receiver
Description including Protocol Specification
[4].
