Com Port Slew Rate - Neousys Nuvo-9531 Series User Manual

4.1.2

COM Port Slew Rate

Another option in BIOS called "Slew Rate" defines how sharp the rising/falling edge is for the
output signal of COM1. For long-distance RS-422/ 485 transmission, you may set the "Slew
Rate" option as "High" to improve signal quality. For RS-422/485 communication, the
"RS-422/ 485 Termination" option determines whether to enable/disable internal termination
of RS-422/ 485 transceiver according to your wiring configuration (e.g. with or without
external termination).
To set COM port Slew rate:
1. Press F2when the system boots up to enter the BIOS setup utility.
Go to [Advanced]  [Peripheral Configuration].
2.
3. Select and highlight the COM port > [Slew Rate].
4. Set it to the desired mode [Low] or [High] and press Enter.
5. Once set, press F10 to save setting and exit.
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