Humandata USB-304, Руководство пользователя

Страница: 13 / 16

9
USB-304 (Ver.1.0)
4. Setting Switch
USB-304 can change operating mode by setting, switching echo cancelling and
terminal resistor.
4.1. RS-485/422(4 wire)
SWA2/SWB2 Factory
Setting
1 2
4 wire OFF ON
* Please refer to Section 4.3
SWA1/SWB1
1 2 3 4
No termination OFF OFF OFF OFF
SWA1/SWB1
1 2 3 4
Transmit Side
termination
OFF OFF OFF ON
SWA1/SWB1
1 2 3 4
Receive Side
termination
ON OFF OFF OFF
SWA1/SWB1
1 2 3 4
Both Sides
termination
ON OFF OFF ON