Normal State; Low Power Mode; Usage Models - Sierra Wireless MC5725V Hardware Integration Manual

Note: This is the default state
when VCC3.3 is first applied in
the absence of W_Disable#
control.
Rev 1.8.2 Oct.08
In the event of a discrepancy in values between this guide and the Product Specification Document (PSD), the PSD takes precedence.

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),
AirCard595U/595/MC5725/MC5725V MiniCard 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
Hours of 8/day (off 16 hrs/day)
operation
Total power 60 mAh
consumed over
24 hours
This example model applies to a battery‐operated device. In
practice, because the module is isolated from the battery (the
host device manages the power source), the mAh ratings
depend on the device's supply efficiency.
Proprietary and Confidential
Power Interface
Used for remote data
logging
40 kB/h
100 kB/day
IS-95 / 14.4 kbps
24/day
200 mAh
15