Chapter 3
Connecting the APM
The APM’s should be connected to the matrix system or relay units using twisted pair cabling
(CAT5E or CAT6, depending of the applied system). The maximum bus length is 300 meters.
The supply voltage is delivered to the APM1xx over the twisted pair CAT cabling, and the voltage
at the APM1xx side (receiver end) should be 16 Volts or higher (transmitter side inserts 24 Volts).
Bus length limits
Analogue:
- Maximum bus length without application of an ARJ03P with external power supply is limited to
300 meter.
- Maximum bus length with application of ARJ03P with power supply is 600 meter.
- Maximum distance from APM1xx to ARJ03P is 3 meters, should be deducted from total bus
length.
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