Sharp JW-21MN - Manual (Page 26)

7-5
7-5 Wiring of cables at outside control panels
Do not bundle the coaxial cable (the trunk and branch lines) together with power cables, and
separate from power cables at least by 100 mm. Do not put the coaxial cable into a power line wired
duct. The best way is to put the communication line in an independent duct.
Be careful that the coaxial cable does not receive any load by laying under a heavy weight such as
other cables.
When other cables run in the same duct as the coaxial cable, run the coaxial cable on the top
position.
Do not run the coaxial cable outdoors as it may cause damage to the JW-21MN due to inductive
lightning or atmospheric charge during lightning.
7-6 Check after wiring
Check the items below after completion of wiring.
Check contents
1 The recommended connector types are used.
2 The connectors are securely locked.
3 The connectors are insulated by "T" jacket or "L" jacket.
4 The recommended coaxial cable type is used.
5 Curved radius of the coaxial cables are more than 45 mm.
6 No heavy load is on the coaxial cables.
7
The coaxial cable is not bundled with a power line cable.
(Away from power line cables more than 100mm.)
8 Length oh branch lines is shorter than 400mm.
9 Total length of the cable is less than 1km.
10
Settings of the termination resistance switch and the shield ground switch are as
per the drawings.