Cinterion
®
DGL61-W Hardware Interface Description
4.5 Power Supply
29
t
DGL61-W_HID_v07
2021-02-17
Public / Preliminary
Page 26 of 42
4.5
Power Supply
The DGL61-W power supply via USB has to be a single voltage source of 5V DC.
When power fails for >1ms, DGL61-W safely power down and restarts when power is back and
valid. The RTC doesn't support longer power fails, this will reset he RTC.
4.6
Power Up/Power Down Scenarios
In general, be sure not to turn on the DGL61-W while it is beyond the safety limits of voltage
and temperature stated in
. DGL61-W immediately switch off after having started
and detected these inappropriate conditions. In extreme cases this can cause permanent dam-
age to the DGL61-W.
4.6.1
Turn Device Gateway LTE on
The DGL61-W is switched on automatically, when the USB cable is connected to an USB Host
(e.g. PC) or started again, when the DGL61-W enters the Power Down mode.
4.6.2
Reset/Restart Device Gateway LTE
There are various possibilities to reset/restart Device Gateway LTE:
•
DGL61-W can be reset/restarted by entering the command AT+CFUN=x,1. For details on
AT+CFUN please see
.
•
DGL61-W can be reset/restarted by simply shutting them down as described in
and will be automatically started afterwards as described in
.
4.6.3
Turn Device Gateway LTE off
Normal shutdown:
•
The DGL61-W supports no permanent power down mode, because the Device Gateway
LTE will be immediately started again after entering the power down mode.
•
AT^SMSO command will do only a restart of the Device Gateway LTE.
This switch off procedure lets the DGL61-W log off from the network and allows the soft-
ware to enter a secure state and save data before disconnecting the power supply. After
AT^SMSO has been entered the DGL61-W returns the following result codes:
^SMSO: MS OFF
OK
^SHUTDOWN
The "^SHUTDOWN" result code indicates that the DGL61-W turns off in less than
1 second. The RTC is still running during this restart.
