Sierra Wireless AIRPRIME WISMO218 - Manual (Page 29)

WA_DEV_W218_PTS_002 Rev 006 April 29, 2010 29
Product Technical Specification &
Customer Design Guidelines Interfaces
** Idle Mode consumption depends on the SIM card used. Some SIM cards respond faster than others, in which
case the longer the response time is, the higher the consumption is.
TX
means that the current peak is the RF transmission burst (Tx burst).
RX
means that the current peak is the RF reception burst (Rx burst), in GSM mode only (worst case).
Three VBATT values are used to measure the power consumption - VBATTmin (3.2V), VBATTmax
(4.8V) and VBATTtyp (3.6V).
The average current is given for the three VBATT values and the peak current given is the maximum
current peak measured with the three VBATT voltages.
For more information about the consumption measurement procedure, refer to Section 4
Consumption Measurement Procedure.
3.3.3. Consumption Waveform Samples
The consumption waveforms presented below are for an EGSM900 network configuration.
The typical VBATT voltage is 3.6V.
Four significant operating mode consumption waveforms are shown in the following subsections,
namely:
 Connected Mode (PCL5: Tx power 33dBm)
 Transfer mode (GPRS class 10, gam.3: Tx power 33dBm )
 Idle mode (Paging 2)
 Idle mode (Paging 9)
Note that the following diagrams only show the waveform of the current, but not the exact values.