Shenzhen Coban Electronics Co. Ltd. CB900 用户手册
Note: * must be guaranteed to ensure compliance with the GSM certification requirements.
Figure 3: voltage and current waveform of the modules at launch
Figure 4: VBAT input reference circuit
4.4. Operating Modes
Operation Type
Mode
Description
Normal
Operation
GSM IDLE
The module is registered to the network. Power
consumption depends on the interval of the network
paging.
GSM CONNECTED
The module has established a call connection with the
network. Power consumption depends on the network
settings and coverage
Voltage Ripple
Normal condition with max transmitter
output
50
mV