LTE Standard Module Series
EM05-G Hardware Design
EM05-G_Hardware_Design 23 / 69
3 Operating Characteristics
3.1. Operating Modes
The table below briefly summarizes the various operating modes referred in the following chapters.
Table 6: Overview of Operating Modes
3.2. Power Saving
3.2.1. Sleep Mode
DRX of the module is able to reduce the current consumption to a minimum value during the sleep mode,
and DRX cycle index values are broadcasted by the wireless network. The figure below shows the
relationship between the DRX run time and the current consumption in sleep mode. The longer the DRX
cycle is, the lower the current consumption will be. The following section describes the power saving
procedure of EM05-G module.
Software is active. The module has registered to the network, and
it is ready to send and receive data.
Network connected. In this mode, the power consumption is
decided by network setting and data transfer rate.
AT+CFUN=4 or driving W_DISABLE1# pin low will set the module to airplane
mode. In this mode, the RF function is invalid.
Minimum
Functionality Mode
AT+CFUN=0 sets the module to a minimum functionality mode without
removing the power supply. In this mode, both RF function and (U)SIM card are
invalid.
The module keeps receiving paging messages, SMS, and TCP/UDP data from
the network with its current consumption reducing to the minimal level.
In this mode, the power management unit shuts down the power supply.
Software is inactive, all interfaces are inaccessible, and the operating voltage
(connected to VCC) remains applied.
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