Solvline PCI - Manual (Page 149)

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Multi-32/LPCI VA2
b. PORTx SLEW: Slew Rate Limit function fit jumper
PORT1 is 1st port, PORT2is 2st port
 10M: Not use Slew Rate Limit ability. Maximum communication speed
921.6Kbps in this mode.
 250K: Use Slew Rate Limit ability. Communication speed is limited under
250Kbps.
Slew Rate Limit reduces reflected waves emitting from ends of
communication cables and speeds up slew-rate driver that restrains EMP
electromagnetic waves thereby enabling communication with no data errors.
But communication speed is limited in this mode.