User's Manual
Table Of Contents
- Introduction
- The Integrator’s Task
- Installing the Modem
- Mounting the Boomer II OEM Modem to Your Device
- Connecting the Data Interface Port
- Selecting & Positioning the Antenna
- Supplying Power
- Using the Modem Test Jig
- Software Development Tools
- Integration Testing
- Appendix A - NCL Interface
- Appendix B – SDK NCL-API and Port Server
- Multisession API
- Application Interface
- _
- Opening a Session
- Close Session
- Send Data to a Radio Host
- Receive Data From RPM
- Get RPM Status Information
- Set Configuration ITEMS Within the RPM
- Reset RPM
- Register Event Callback Function
- Enable / Disable Events
- Get Error Description
- Register Wakeup Application
- Deregister Wakeup Application
- Switch RPM On/Off
- Send Generic NCL Command To RPM
- Get Software Version
- _
- A
- Appendix C – SDK Sample programs
- Appendix D - Application Development
- Appendix E - Message Routing and Migration
- Appendix F – Guide to Desense
- Appendix G - Numeric Conversion Chart
- Appendix H - Specifications
- Appendix I - Glossary
Installation_________________________________________________ Boomer II User Manual & Integrator’s Guide
Copyright Wavenet Technology © November 2003 32 BM210012WT37
Modem On/Off Control
The modem on/off input line (HOSTPWR_ON) is an active high input
signal and is fitted with a 33Ω series resistor and clamp diode to the
internal supply line for input protection. Internally it is passively pulled
low (after the series resistor) via a 56kΩ pull-down resistor to ground
and is asserted with an actively driven high signal. To turn the modem
off it must be actively pulled low to ground. The electrical interface
specification and equivalent circuit is as follows:
Modem On/Off Control Equivalent Circuit
Modem On/Off Control Electrical Characteristics
Parameter Range Low High
Input Voltage 0-3.3 V OR 0-5V 0.4 V (max) 1.0 V (min)
Input Current 400 µA (max) 100 µA (max)
It is acceptable to drive this input with a NPN transistor or N-channel
MOSFET connected to ground with a 4k7Ω pull-up resistor to 3.3V
Warning: When the modem is turned off using the HOSTPWR_ON
signal and HOST_3.8V power is removed, all other signals connected
to the Data Interface Connector should also be turned off or set to 0V
otherwise the modem may remain powered on via these signals.