Product Info

LTE Standard Module Series
EC21_Series_Mini_PCIe_Hardware_Design
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2.4. Functional Diagram
The following figure shows the block diagram of EC21 series Mini PCIe.
Figure 1: Functional Diagram
2
Within operating temperature range, the module is 3GPP compliant.
3
Within extended temperature range, the module remains the ability to establish and maintain a voice, SMS, data
transmission, etc. There is no unrecoverable malfunction. There are also no effects on radio spectrum and no harm to
radio network. Only one or more parameters like P
out
might reduce in their value and exceed the specified tolerances.
When the temperature returns to normal operation temperature levels, the module will meet 3GPP specifications again.
Rx-diversity (Optional) Support LTE/WCDMA Rx-diversity
GNSS Features
 Protocol: NMEA 0183
 Data update rate: 1 Hz by default
AT Commands

Compliant with 3GPP TS 27.007 and 3GPP TS 27.005

Quectel enhanced AT commands
Physical Characteristics

Size: (51.0 ±0.15) mm × (30.0 ±0.15) mm × (4.9 ±0.2) mm

Weight: approx. 9.8 g
Temperature Range
 Operating temperature range: -35 °C to +75 °C
2
 Extended temperature range: -40 °C to +80 °C
3
 Storage temperature range: -40 °C to +90 °C
Firmware Upgrade USB interface or DFOTA*
RoHS All hardware components are fully compliant with EU RoHS directive