User's Manual
Table Of Contents
- Introduction
- The Integrator’s Task
- Installing the Modem
- Using the Modem Test Jig
- Testing
- Desense
- Application Development
- Message Routing and Migration
- Appendix A - NCL Interface
- Appendix B - Software Development Kit
- SDK Contents
- System Requirements
- SDK Software Architecture
- NCL Application Programmer’s Interface
- Implementation
- Logical Architecture
- 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
- SCR Application Programmer’s Interface
- A
- Appendix C – Sample programs
- Appendix D - Wavenet Application Loader
- Appendix E - Numeric Conversion Chart
- Appendix F - Specifications
- Appendix H - Glossary
Desense __________________________________________________ Boomer II User Manual & Integrator’s Guide
Wavenet Technology 78 BM210012WT27
The host and modem must communicate the problem at hand to
attempt to correct it. This capability is not supported by the
Boomer II OEM modem.
Pulling the Harmonic away from the Channel Frequency
RF Network Issues
Each RF network has its own requirements for the subscriber device.
Most networks implement a coverage equalization scheme. This
consists of configuring the infrastructure sites such that their RF power
output is equal to that of the subscriber device.
Since most portable devices are battery operated, the transmitter power
of the portable units is relatively low. To compensate for this, the base
site transmitter power is decreased to a level equal to that of the
portable. The base site has a much larger and reliable power source,
and is capable of putting out more power. This would help overcome
desense problems that the portable unit incurs. Most network managers
prefer not to increase their site power because of ERP licence
limitations and cell overlap issues.
Network operators must consider ambient noise levels when designing
their coverage plans. Once the wireless modem and host unit are
engineered not to “self-desense”, a host of other machines in the user’s
environment can still impact radio performance. These machines are
not usually within close proximity of the wireless modem antenna, and
have less effect. An FCC Class B radiator can impact the wireless
device if it is within 30 meters of the device, assuming that an emission
exists at the channel frequency of the radio.
~
Amplitude
Fs
Fss
Fh
Fc
Fhs
Freq.
Fs Interference source fundamental frequency
Fss Shifted source fundamental frequency
Fh Interference source harmonic
Fhs Interference source harmonic shifted
Fc Channel frequency