Wavenet Technology Pty Ltd. BM2900D Benutzerhandbuch
Boomer II User Manual & Integrator’s Guide _________________________________________________Installation
BM210012WT37
45
Copyright Wavenet Technology © November 2003
The power supply should be set above nominal 3.8V to
accommodate worst case power supply drop. i.e. 4.0V.
accommodate worst case power supply drop. i.e. 4.0V.
The power supply should have good regulation with < 200mV
drop at 2.2A.
drop at 2.2A.
Adequate supply decoupling (10,000uF min.) is added at
terminal connector to reduce ripple and smooth supply voltage
steps.
terminal connector to reduce ripple and smooth supply voltage
steps.
The power supply be capable of supplying non-ideal current
consumption conditions of up to 2.2A for up to 20 seconds and
with a duty cycle (set by data usage) ~ 30% maximum.
consumption conditions of up to 2.2A for up to 20 seconds and
with a duty cycle (set by data usage) ~ 30% maximum.
Multiple pins are assigned to both power and ground
connections for the modem. Connection of all designated pins
to the appropriate supply or ground in the host/terminal is
necessary to accommodate modem current requirements.
connections for the modem. Connection of all designated pins
to the appropriate supply or ground in the host/terminal is
necessary to accommodate modem current requirements.
The host/terminal must provide a continuous supply.
The modem is fully compliant with the DataTAC Power Save
Management system. The modem exists in the lowest power state
possible while still providing uninterrupted service. By de-asserting
the HOSTPWR_ON signal, the modem disconnects from the
network then enters a near-zero power state. The modem resets if
the power source is cycled. This can cause network service issues,
since the modem might not have had a chance to de-register. The
modem spends the majority of time in sleep mode.
Management system. The modem exists in the lowest power state
possible while still providing uninterrupted service. By de-asserting
the HOSTPWR_ON signal, the modem disconnects from the
network then enters a near-zero power state. The modem resets if
the power source is cycled. This can cause network service issues,
since the modem might not have had a chance to de-register. The
modem spends the majority of time in sleep mode.
Conservation
In installations requiring power conservation (such as, when the
modem is powered from a battery or solar cell), you must monitor
modem power consumption in various operating states. Even though
the Boomer II OEM modems are designed for minimal power
consumption, by using the network Power Save protocol offered by
DataTAC networks you can further reduce power consumption.
Another power saving idea is to activate the modem only when it is
needed.
Note: The on-board LEDs may be disabled to minimise power
consumption. Refer to Appendix A - NCL Interface. All LEDs will
flash on start-up and the Receive and Transmit LEDs will flash on
power down regardless of the state of the LED disable control.
In installations requiring power conservation (such as, when the
modem is powered from a battery or solar cell), you must monitor
modem power consumption in various operating states. Even though
the Boomer II OEM modems are designed for minimal power
consumption, by using the network Power Save protocol offered by
DataTAC networks you can further reduce power consumption.
Another power saving idea is to activate the modem only when it is
needed.
Note: The on-board LEDs may be disabled to minimise power
consumption. Refer to Appendix A - NCL Interface. All LEDs will
flash on start-up and the Receive and Transmit LEDs will flash on
power down regardless of the state of the LED disable control.
Power Save Protocol
The modem typically uses current provided by the host/terminal
battery. For the product to be usable for a reasonable period in portable
applications, the host/terminal battery power must be conserved. To
meet this requirement, the modem uses DataTAC Power Save protocol.
The Power Save Protocol defines the following four modem power
consumption states:
The modem typically uses current provided by the host/terminal
battery. For the product to be usable for a reasonable period in portable
applications, the host/terminal battery power must be conserved. To
meet this requirement, the modem uses DataTAC Power Save protocol.
The Power Save Protocol defines the following four modem power
consumption states: