Dsr Signal; Power Measurements; Mtsmc-L4G1 Power Draw - Multitech SocketModem Cell MTSMC-L4G1 Device Manual

SPECIFICATIONS
Pin
J58
J61
J63

DSR Signal

The contained cellular module does not provide a signal output for Data Set Ready (DSR). To support legacy
appliations, the SocketModem provides a controllable output signal on that pin. Refer to the commands below to
control the output.
Set the pin to output, with no pull, with 2mA drive strength:
AT+QGPIOS=4,0,1,0,0
Set the signal level high:
AT+QGPIOW=4,1
Set the signal level low:
AT+QGPIOW=4,0

Power Measurements

Multi-Tech Systems, Inc. recommends that you incorporate a 10% buffer into your power source when determining
product load.
Note: The following notes apply to the following tables.
TX Pulse: The average peak current during a GSM850 transmission burst period or LTE connection.
The transmission burst duration for GSM850 can vary, depending on what transmission scheme is
being deployed (GPRS Class 8, Class 10, GSM, etc.).
Maximum Power: The continuous current during maximum data rate with the radio transmitter at
maximum power.
Inrush Charge: The input current at power on.

MTSMC-L4G1 Power Draw

Radio Protocol
3.3 Volts
GSM 850
WCDMA Band 2
(1854 Mhz)
LTE Band 8
(897.5 Mhz)
14
Signal Name
–LED LINK
VCC
GND
Sleep Mode Power Down
Current Mode (via
AT+QPOWD)
25 MA 26 mA
24.4 mA 33 mA
24.4 mA 33 mA
Serial Only USB Only
X
X X
X X
Power Down
Mode (via Reset
line)
233 uA
234 uA
232 uA
SocketModem
Callbox Live Connection
Connection Idle Idle (No Data)
(No Data)
51 mA N/A
50 mA 51 mA
51 mA 58 mA
®
Cell MTSMC-L4G1 Device Guide