Chapter 2. Setting Up the Express 300061203153L2-20 Express 3000 User Manual 2-9Setting the DIP SwitchesThe Express 3000 contains two DIP switches (1 and 2), located on theRear Panel. These switches let you physically configure DTE rates andreset the unit. The factory default position for both switches isdown (ON). Leave the switches in the down (ON) position during theinitial installation. Figure 2-3 shows the location of the switches on theRear Panel.Figure 2-3. DIP Switch Locations on Rear PanelDIP Switch 1With DIP switch 1 set to the ON (down) position, the Express 3000 auto-matically adapts to the DTE rate, up to 115.2 kbps. With DIP switch 1 setto the OFF (up) position, the unit operates at a DTE rate of 230.4 kbps. Aspecial serial COM port using a 16650 UART chip is required to operateat this higher rate.DIP Switch 2DIP switch 2 resets factory default settings when you set it to theOFF (up) position. When the switch is set to the ON (down) position,new settings can be entered. These settings are saved until DIPswitch 2 is reset to the OFF (up) position; then, they are cleared.DIP Switch 1:(DTE Rates) On (Down) = Autobaud (speeds up to 115.2 kbps)Off (Up) = 230.4 kbps (requires 16650 UART)DIP Switch 2:(Reset) Off (Up) = Factory Default (resets settings)On (Down) = Normal (saves settings)OFFMODEMEIA232PWR ISDN2 1OFFON 1 21 2ON12VDC
