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2.3 Balancing
6K8Ω
3K9Ω
Tx
2.3.5 Double zone balancing with EOL
Double zones with EOL resistors can discriminate 6 conditions on the entire terminal:
l
stand-by on both zones
l
alarm on zone 1 and standby on zone 2
l
alarm on zone 2 and stand-by on zone 1
l
alarm on both zones
l
tamper (wire cutting)
l
tamper (short-circuit)
6K8Ω
3K9Ω
3K9Ω
Tx