Vaisala WINDCAP WMT52 Uživatelská příručka stáhnout pdf (Strana 48)

User’s Guide ______________________________________________________________________

46 ___________________________________________________________________M210925EN-B

Data Communication Interfaces

0505-206

Figure 24 Data Communication Interfaces

With RS-485 and RS-422 interfaces, termination resistors need to be

used at both ends of the line, if data rate is 9600 Bd or higher and

distance is 600 m (2000 ft) or longer. Resistor range 100 ... 180 Ω is

suitable for twisted pair lines. Resistors are connected across RX- to

RX+ and across TX- to TX+ (with two-wire RS-485 only one resistor

needed).

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Vaisala WINDCAP WMT52 Uživatelská příručka Strana 48