Jumat, 04 Oktober 2013

Pathloss 4 Tutorial

Here you can learn how to use PATHLOSS as complete Microwave System Planner.   A. Software Requirement. Necessary Data for Microwave Network Design & How to place it in your PATHLOSS Program   The followings data must be placed in PATHLOSS program folder to be able to use the program as a full Microwave system Planner. 1. Rain File 2. Equipment File 3. Gopo30303 (Terrain Data File)   Rain File This folder contents Rain data for each area of the world according to 4 standards (Canada, Crane, Crane_96 & ITU). Usually we work according to ITU standard (ITU-R-P.530-7/8) which contents Rain Data for each area of the world according to the map shown below. This data will placed automatically in Pathloss folder after installation.  Eguipments This folder contents 4 folders but for our Microwave design we just use 2 folders as the following :1. MAS which contents Microwave Antenna Data for different Antenna Manufacturer (Andrew , RFS , ERICSSON , …………..)2. MRS which contents Microwave Radio Data for different Manufacturers.Note: We just concern of NEC Equipment which is not included with our PATHLOSS software. NEC data will be attached with this documents as Soft copy so please kindly place it in your PATHLOSS folder (inside MRS folder) to be used.NOTE: EQUIPMENT FOLDER IS AVAILABLE ON PATHLOSS PROGRAM CD. SO PLEASE KINDLY COPY TO YOUR PATHLOSS FOLDER
GTopo30303 (Terrain Data File)This folder contents the Terrain data for all the world but this data is very big size so it will be better if you take only some areas where you expected to do your survey. WARNING This data is not accurate so we usually get terrain data from contours maps or from path survey. Just we use this data for reference So it isn't allowed to use this data to create path profile.  How to set this data? 1-      Create new folder in your PATHLOSS folder & name it as GTopo30303 2-      Copy inside it the necessary area files (each area has 2 files) 3-      Run pathloss program 4-      Go to configure menu & click terrain database  as shown in fig. 1.2.7 5-      Set Primary (No Selection) & Secondary (GTopo30 Global 30sec) as shown in Fig. 1.2.8 6-      Click Set Up SecondarySet Directory – choose Gtopo30303 folder then kick OKclick Closeclick OK  as shown below.   
 
B.  How to operate PATHLOSS 

PATHLOSS program is full Microwave Network design software.
You can use PATHLOSS for the following necessary :
a)      Make Network Configuration
b)      Make Path Profile to find antenna height in each station
c)      Calculate Link Budget to find Antenna diameters , RX level & Link Availability
d)     Frequency Plan for overall network
e)      Frequency Interference calculations  for overall network

To do all the above you shall go as the followings step by step :

2.1- Sites Data Entry & Creation of Network

To enter sites data to PATHLOSS program please follow the following steps
2.1.1- Run PATHLOSS & go to Module & Click Network or just Press Ctrl N to go to Network screen as per shown in Fig. 2.1.1


B.1. Sites Data Entry & Creation of Networ
B.2. Link by Link PATHLOSS Files Creation
B.3. Terrain Data & Obstruction Entry
B.4. Finding Suitable Antenna Heights
B.5.  Link Budget Calculations
B.6. Frequency Interference Calculations for The Network

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