DGH A2000 series 사용자 설명서 - 페이지 8

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A1000 & A2000 USERS MANUAL 8

A2000 RS-485 TERMINATIONS

Proper biasing and termination resistors in the A2000 may be enabled by

using the internal jumpers contained in the A2000. Figure 3 shows the

location of the jumpers on the A2000 printed circuit board. The jumpers

are shown in the factory setting to enable a resistor, insert a jumper into

the jack position adjacent to the resistor nomenclature written on the

A2000 printed circuit board.

NOTE: The RS-485 IN +1K and -1K jumpers should be installed when

the A2000 is used as a RS-232/RS-485 converter.

FACTORY RS-485 TERMINATION SETTINGS

A1000: 300 BAUD, +1K, -1K on RS-485 IN & RS-485 OUT connectors

enabled, all other switches off.

A2000: 300 BAUD, +1K, -1K, on RS-485 IN & RS-485 OUT enabled via

internal jumpers, all other termination jumpers disabled.

Figure 3. A2000 jumper locations.