WBCHSE HS Vocational Telecom case studies
WBCHSE HS Vocational Telecom · Put your knowledge to work in context.
The WBCHSE Higher Secondary Vocational (Telecom) is a two-year higher-secondary vocational qualification in West Bengal, delivered under the state council for higher secondary education, with the trade subject taught alongside general subjects and assessed through written theory, practical/laboratory work and internal assessment or project work. It suits students who have completed secondary schooling and want a school-level route into telecom work - installation and maintenance of telephone and broadband lines, exchange and mobile site support, cabling, customer premises equipment - or a foundation for further technical study. The WBCHSE HS Vocational Telecom case studies are 5 cases and about 4,092 words.
1A Bank That Was Never Big Enough: Battery Autonomy and DC Voltage Drop
A telecom operator's remote repeater site is fed by a −48 V DC plant with a 200 Ah VRLA battery bank rated at the 10-hour rate. The steady site load is 22 A.
877 words, about 4 min2Water in the Cable: Reading Copper Fault Tests on a VDSL2 Line
A VDSL2 customer 3.2 km from the cabinet reports sync drops every evening and a noise floor that rises when it rains. The line uses one pair of a 4-pair 0.5 mm aerial copper cable.
789 words, about 4 min3Good RSRP, Bad SINR: Splitting Interference from Overshoot
An LTE 1800 MHz three-sector macro site serves a small market town. Sector 2 (azimuth 120°) faces a low-rise housing estate and is the worst performer in the weekly report.
765 words, about 4 min4The Splitter That Was Not in the Drawing: GPON Power Budget and OTDR
A GPON FTTH network serves a housing colony from a Class B+ OLT port: transmit power +3.0 dBm at 1490 nm, ONT receiver sensitivity −28.0 dBm. The as-built drawing shows a 20.2 km run, made up of 18.0 km of G.652D feeder to the splitter cabinet plus 2.2 km of distribution, with two fusion splices, three connectors (OLT patch panel, splitter tray, ONT), and a 1:8 planar splitter of 10.5 dB insertion loss.
762 words, about 4 min5Live Sector, Open Edge: RF and Fall Protection on a Rooftop
A two-person crew is sent to a rooftop macro site to replace a corroded RRU jumper on sector 1. The roof is 24 m above ground with a 0.9 m parapet, and the antenna is on a 3 m pole at the roof edge.
899 words, about 4 min