Off State; Normal State; Low Power Mode; Usage Models - Sierra Wireless MC8301V Hardware Integration Manual

Note: This is the default state
when VCC is first applied in the
absence of W_Disable# control.
Rev 1.12.6 Feb.10
In the event of a discrepancy in values between this guide and the Product Specification Document (PSD), the PSD takes precedence.

Off state

In this state, the host is powered up and the module is
powered down (but still connected to the power source).
The host keeps the module powered off by driving the
W_Disable#
current.

Normal state

This is the active state of the module. In this state:
The module is fully powered.
•
• The module is capable of placing / receiving calls or estab‐
lishing data connections on the wireless network.
• The USB interface is fully active.

Low power mode

In this state, RF (both Rx and Tx) is disabled in the module, but
the USB interface is still active. This low power mode
(ʺairplane modeʺ) is controlled by software commands
through the host interface.
For instructions on using the commands, refer to AT Command
Set for User Equipment (UE) (Release 6) (+CFUN=0 command),
CDMA CnS Reference (Document 2130754)
(CNS_RADIO_POWER [0x1075] command), or MC87XX
Modem CnS Reference (Document 2130602) (Disable Modem
command).

Usage models

Usage models can be used to calculate expected current
consumption. A sample usage model is provided in Table 2‐1.
Table 2-1: Power consumption of a sample application
Used by a field worker
(data only)
Upload (module 1000 kB/day
Tx)
Download 500 kB/day
(module Rx)
Coverage / data 1X / 80 kbps
rate
Proprietary and Confidential
signal low. In this state, the module draws minimal
Power Interface
Used for remote data
logging
40 kB/h
100 kB/day
IS-95 / 14.4 kbps
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