Ublox TOBY-L2 series, Руководство по системной интеграции

Страница: 27 / 164

TOBY-L2 and MPCI-L2 series - System Integration Manual
UBX-13004618 - R28 System description Page 27 of 164
1.5.1.6 Current consumption in fixed active-mode (power saving disabled)
When power saving is disabled, the module does not automatically enter the low power idle-mode
whenever possible: the module remains in active-mode. Power saving configuration is by default
disabled. It can also be disabled using the AT+UPSV command (see u-blox AT Commands Manual
[3]
for detail usage).
The module processor core is activated during idle-mode, and the 26 MHz reference clock frequency
is used. It would draw more current during the paging period than that in the power saving mode.
Figure 10 illustrates a typical example of the module current consumption profile when power saving
is disabled. In such case, the module is registered with the network and while active-mode is
maintained, the receiver is periodically activated to monitor the paging channel for paging block
reception. Detailed current consumption values can be found in TOBY-L2 Data Sheet
[1] and in
MPCI-L2 Data Sheet [2] .
ACTIVE MODE
2G case: 0.44-2.09 s
3G case: 0.61-5.09 s
LTE case: 0.32-2.56 s
Paging period
Time [s]
Current [mA]
Time [ms]
Current [mA]
RX
Enabled
0
100
0
100
Figure 10: VCC or 3.3Vaux current consumption profile with power saving disabled and module registered with the network:
active-mode is always held and the receiver is periodically activated to monitor the paging channel for paging block reception