4-14 Prior to Applying AC Power to the ConsolePlease read this section before applying AC power to the console.Security Code Enable/DisableAccess to all setup functions through either the front panel and/or the RS-232 interface can be restricted by theuse of security codes. Once this feature has been activated, only persons knowing the user-designated codes mayenter or change any setup values.This feature will prevent unauthorized persons from intentionally or accidentally entering or changing setup values.Two separate Security Codes may be entered—one to restrict access to the Setup Mode from the front-panelkeyboard and another to restrict remote access through the RS-232 interface.Open the left front panel door and locate the slide switch for the battery and the DIP switch. See appropriatefigure for your console (Figure 4-1 - Figure 4-3).TLS-300 CONSOLESIMPORTANT! DIP switch #2 controls the power to the front-panel display and must be in the OPEN position!If you want to enable the security code feature and require entering of the security code(s) for front-panel and/orRS-232 system setup access, make sure that switches #3 and/or #4 on DIP switch S2 are in the Closed position.If you want to disable the security code feature and allow front panel and RS-232 system setup access, make surethat switches #3 and #4 on DIP switch S2 are both in the OPEN position.TLS-350 CONSOLESIf you want to disable the security code feature and allow front panel and RS-232 system setup access, make surethat switches #1 and #2 on DIP switch SW2 are both in the OPEN position.If you want to enable the security code feature and require entering of the security code(s) for front-panel and/orRS-232 system setup access, make sure that switches #1 and/or #2 on DIP switch SW2 are in the Closedposition.IMPORTANT! DIP switch #3 controls the power to the front-panel display and must be in the OPEN position!When switch #3 is closed, the console display remains blank. For international operation only! - set DIP switch 3to the Closed position to enable HRM.DIP switch #4 is not used at this time and may be in either position. DIP switch #1 is not used at this time andmay be in either position.