Environmental Specifications
36 Module Hardware Description May 31, 2008
Environmental Specifications
Table 3 -2 gives the environmental operating conditions of the W24 module.
Caution: Exceeding the values may result in permanent damage to the module.
Application Interface Specifications
Table 3 -3 summarizes the DC electrical specifications of the host application interface connector
signals.
Table 3 -4 summarizes the DC electrical specifications of the cellular modem (e.g. G24) interface
connector signals.
Important: Interface signals that are not used by the customer application must be left
unconnected. W24 incorporates the necessary internal circuitry to keep unconnected
signal in their default state. Do not connect any components to, or apply any voltage
on, signals that are not used by the application.
Important: It is recommended to place a pull-down resistor in the customer application, on the
IGN signal. A 100 kohm resistor, or less, is acceptable.
Important: Signals that are defined as "Do Not Use", or DNU, must remain externally
unconnected in any case. These signals are reserved for future use.
Table 3-2:Environmental Ratings
Parameter Conditions Min Max Unit
Ambient Operating
Temperature
-20 +60 °C
Storage Temperature -40 +85 °C
ESD At antenna connector
Contact
Air
-8
-15
+8
+15
kV