Error! No text of specified style in document. - System Integration Manual
CDMA-2X-11004-P1
Objective Specification
System description
Page 39 of 79
40.2.2
Module power off
The correct way to switch off Error! No text of specified style in document. modules is by means of
+CPWROFF AT command (more details in u-blox C200 AT Commands Manual [3]): in this way the
current parameter settings are saved in the module’s non-volatile memory and a proper network
detach is performed.
An under-voltage shutdown will be done if the VCC supply is removed, but in this case the current
parameter settings are not saved in the module’s non-volatile memory and a proper network
detach cannot be performed.
40.2.3
Module reset
The module reset can be performed:
Forcing a low level on the
RESET_N
input pin, causing an “external” or “hardware” reset (LISA-C200
only)
AT+CFUN command (more details in u-blox C200 AT Commands Manual [3]): in this case an
“internal” or “software” reset is performed, causing an asynchronous reset of the baseband
processor
40.3
RF connection
The ANT connector has 50
nominal characteristic impedance and must be connected to the
antenna through a 50
transmission line to allow transmission and reception of radio frequency
(RF) signals in the Cell and PCS operating bands.
Name
Description
Remarks
ANT
FW75
LISA-C200
RF connector
Zo = 50
nominal characteristic impedance.
U.FL connector
Surface Mount pad
Table 9: Antenna connector
The ANT port ESD immunity rating is 500 V (according to IEC 61000-4-2). Higher protection
level could be required if the line is externally accessible on the application board.
Choose an antenna with optimal radiating characteristics for the best electrical performance and
overall module functionality. Focus on minimizing the insertion loss between radiating antenna and
the module RF connector. Overall system performance depends on antenna reception and
transmission. See section 74.2 for further details regarding antenna guidelines.
