Product Info

LTE Standard Module Series
EC25 Series Hardware Design
EC25_Series_Hardware_Design 23 / 134
1.
1)
Within operating temperature range, the module is 3GPP compliant.
2.
2)
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 operating
temperature levels, the module will meet 3GPP specifications again.
3. “*” means under development.
2.3. Functional Diagram
The following figure shows a block diagram of EC25 and illustrates the major functional parts.
⚫ Power management
⚫ Baseband
⚫ DDR + NAND flash
⚫ Radio frequency
⚫ Peripheral interfaces
Rx-diversity
Support LTE/WCDMA Rx-diversity
GNSS Features
Gen8C Lite of Qualcomm
Protocol: NMEA 0183
Data update rate: 1 Hz by default
AT Commands
Compliant with 3GPP TS 27.007, 27.005 and Quectel enhanced AT
commands
Network Indication
Two pins including NET_MODE and NET_STATUS to indicate network
connectivity status
Antenna Interfaces
Including main antenna interface (ANT_MAIN), Rx-diversity antenna
interface (ANT_DIV) and GNSS antenna interface (ANT_GNSS)
Physical Characteristics
Size: (29.0 ±0.15) mm × (32.0 ±0.15) mm × (2.4 ±0.2) mm
Weight: approx. 4.9 g
Temperature Range
Operating temperature range: -35 to +75 °C
1)
Extended temperature range: -40 to +85 °C
2)
Storage temperature range: -40 to +90 °C
Firmware Upgrade
USB interface or DFOTA
RoHS
All hardware components are fully compliant with EU RoHS directive
NOTES