Ashcroft DM61 Manual de usuario Pagina 15

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Serial Communication Adapters Instruction Manual
15
Figure 3. RS-485 Half-Duplex (Multi-Drop) Two-Wire Wiring
Notes:
1. Termination resistors are optional and values depend on the cable
length and characteristic impedance. Consult the cable manufacturer
for recommendations.
2. Use shielded cable, twisted-pair plus ground. Connect ground shield
only at one location.
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