Aiphone GFW-VBC - Manual (Page 3)

2] Example to increase video trunk lines
4 residences per floor, 12 floors (total 48 residences), 5 blocks; total 240 residences
• Distance calculation : From GF-VBC/A or GFW-VBC to the farthest
apartment stations; Max. 150m w/00.8mm (500' w/20AWG) per video
trunk line.
O + © + ® 80rn + 33m + 30m = 143m
260' + 108' + 100' = 468'
A\
CAUTION
Do not mix both wiring methods: monitor-to-monitor and
homerun to GF-4Z's for any residential trunk line.
r* "l: GFW-VBC, GF-VBC/A ; Power Supply
OQ :GF-1MD(GF-1MDK)
a*
|S):GF-VA
Q :GF-4Z
GF-BCl
Distribution 2 T
point for AUDIO ra-Qi
80m(260')
Q
80m(260')
30m(100')
Audio wiring is not shown.
(*1): Install an add-on power supply when 2nd GF-1MD is installed in each apartment.
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