Transmission Analysis

Transmission Analysis Overview

  • The Transmission Analysis module can be configured for the following application types: conventional microwave radio, adaptive modulation microwave radio and land mobile radio systems. Each application type has a configurable detailed and summary report. The application type is set under Configure - Options - Calculation Options - Transmission calculations - Application - radio type or click on the application on the status bar.
  • The multipath fade algorithm is set under Configure-Options-Calculation Options-Transmission calculations-Multipath-K fading method.
  • The space diversity method is set under Configure-Options-Calculation Options-Transmission calculations-Space diversity methods
  • The display shows a system block diagram for the selected application and antenna configuration. Each icon in the block diagram represents a data entry form. Click on the icon to bring up its data entry form. Alternately use the tab key to shift the focus to the next icon and then press Enter.
  • The frequency 890 MHz is used as the dividing line between isotropic and dipole gains. For example below 890 MHz, the effective radiated power will be reference to a dipole antenna (ERP). Above 890 MHz, the isotropic EIRP is used.
  • Rain and passive repeater area carried out in the Transmission Analysis module. The documentation for these topics is in separate chapters.
  • Rain attenuation calculations are made in the Transmission Analysis module. The documentation is covered separately under the rain chapter.
  • Passive repeater links can be created in the Transmission Analysis module. This feature is covered in the passive repeater section.
  • Data can be imported into the worksheet from lookup tables, radio and antenna data files (codes) or from another Pathloss data file using the Template selection.
  • The lower part of the display shows all of the calculations. The worksheet is automatically recalculated as data is entered. The calculation starts by erasing the calculation display. The calculation warning and error status are displayed on the status bar as an  or ⮿ respectively. A ✔ means no errors or warnings. Click on the  or ⮿ for details on the error warning. More information on warnings and errors can be found at Transmission Design Warning and Error Messages

Not all data entries will be applicable to your application. If a data entry is not applicable, leave it blank. Do not enter a zero, as this is considered as an entry and will be printed up in the reports. To erase an entry, place the cursor on the entry and press the F3 key.