| Posted: Friday Jun 23rd, 2017 07:58 am |
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1st Post |
slychiu
Administrator
| Joined: | Saturday Apr 29th, 2006 |
| Location: | Singapore |
| Posts: | 5727 |
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Important
Please do NOT lay the Keypad wires close to any Mains Cable, as this will cause interference in the form of a loud humming or buzzing. This noise is almost impossible to remove except by moving the keypad wires AWAY from the Mains cable. 50/60 Hz is in the voice frequency range and is difficult to filter out
It is also importrant to use CAT 5 cable preferably shielded
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| Posted: Sunday Jun 25th, 2017 10:36 am |
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2nd Post |
Swiss-Toni
UCM Pi Users
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10cm is the usaul distance that mains cables should be kept away from other cables that maybe interefered with esp data, CCTV & other COAX cables esp TV.
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