Section 3 BASIC OPERATIONCalifornia Analytical Model 600 CLD C_ETL_US/CE Operators ManualRev12 Page 8 of 814. Basic OperationThe operation of the digital microprocessor conforms to the guidelines of the AK committee,originally developed in the German automotive industry. Via the serial port of the MSR-Card,the analyzer can be remote-controlled by a master computer. The serial communication fullycorresponds to the specifications of the AK protocol. TCP/IP communication is alsoavailable.4.1. DisplayThe analyzer's LCD display includes 16 lines with 30 characters each. The display alsohas background lighting that can be switched on and off via the Display key on thekeyboard. The following example shows the measurement screen which is formatted into4 information areas.Measurement ScreenTHE TOP INFORMATION AREA CONTAINS:The AK Protocol Information. This capability is for advanced uses and may be toggledon and off in the setup screen, F5. Next to the symbol for the active operating mode, thedevice status is indicated. The status field is also displayed on all other screens.SARE Autorange enabledSMGA Measuring gas is flowingSMAN Device is in manual operation statusThe level of Password Entry is shown on the right with 1 to 4 horizontal lines.THE LARGE INFORMATION AREA CONTAINS:The Concentration of the gas sample and mode of operation.THE THIRD INFORMATION AREA CONTAINS:The help information for the parameter selected, ranges, etc.THE LOWER INFORMATION AREA CONTAINS:The time & date and any error condition.The symbol in the bottom right corner indicates the keyboard mode. In the exampleshown, the keyboard is in the function key mode. For input fields, the mode is usuallyswitched to numerical input. Then, an N appears in the lower right of the screen. Thissymbol is displayed on all screens.