› PDH protocol: (plesiochronous digital hierarchy) is a For the GSM site to be connected with the BSC it needs E1Ĭhannel which is achieved by the Transmission like Microwave (B) and establish the BSC connection and make the belling andĮtc. › To make a call you need a network coverage which secureĪccess for the mobile (A) to network to find the destination mobile › Transmission in telecom is to transmit the traffic from a site Video, etc.) transmitted over a medium between source and › Transmission is A process where the traffic (voice, Data, TRM MINI-LINK TN Presentation By Khalil Al-Alami STM1 interface (63 E1) usually installed at node sites.
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5) Install the antenna side struts supplied with the antenna. 4) Lock down the antenna so no further movement can occur. 3) Move to the far end of the link and repeat step 1. 2) Turn the local transmitter on to allow alignment at the far end. When the highest signal has been found for azimuth, repeat for the elevation adjustment. FINE ALIGNMENT PROCEDURE 1) Adjust the azimuth over a 30 degree sweep by turning the adjustment bolt in increments of 1/10th turn to avoid missing the main lobe.
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4) Alignment mode is ON for SP ODUs – Display on ODU and IDU will update at 5 times per second. 2) The TX output power is not set above the level of the license. Ensure that: 1) Frequency of the far end transmitter matches the frequency of the local receiver. The local ODU must be powered on, but need not be transmitting. The ODU lightning surge suppressors and grounding provisions should be put in place as well before alignment.
Before conducting fine alignment, the ODUs at both ends of the link must be attached properly to the antenna via the direct mount or remote mount (using Waveguide) and the far end ODU must be powered on and transmitting.
2) If visibility is poor, use compass or GPS coordinates and a GPS compass to aim the antenna coarsely. The most common ways to do this are : 1) If the visibility is good and the sun is in the correct position, have someone at the far end location reflect the sun with a mirror so the location is obvious. Step 2: Visually align the antenna with the far end. Ensure that the mount itself is attached securely and all safety precautions have been taken. step 1: Preparation: Mount the antenna on the tower according to the antenna installation instructions: Ensure that the adjustment bolts move smoothly and the range of motion is sufficient for the expected angle of up and down (elevation) tilt.Inversely in the other side this signal will be received back to the original signal. Then this signal will be passed to Radio Unit carried over specific carried frequency and amplified via another electronic circuits as RF signal out to the air. The voice is converted to electromagnetic analog signals then this signals will be converted by electronic circuits in the Modem Unit to digital signals which will be modulated and encrypted according to specific protocol.