Teledyne 7300A manual Logging Out, System Self-Diagnostic Test

Infrared Gas Analyzer Operation 4

When you have finished typing the new password, press Enter. A verifica- tion screen appears. The screen will prompt you to retype your password for verification.

Enter PWD To Verify:

A A A

Use the UP/DOWN key to retype your password and use ENTER to

scroll through the letters, and last enter will complete verification. Your password will be stored in the microprocessor and the system will immediately switch to the Analyze screen, and you now have access to all instrument functions.

If all alarms are defeated, the Analyze screen appears as:

1.95% CO2

nR1: Ø — 1Ø Anlz

If an alarm is tripped, the second line will change to show which alarm it is:

1.95% CO2

AL—1

NOTE:If you log off the system using the LOGOUT function in the MAIN MENU, you will now be required to reenter the password to gain access to Alarm, and Range functions.

4.3.4 Logging Out

The LOGOUT function provides a convenient means of leaving the analyzer in a password protected mode without having to shut the instrument off. By entering LOGOUT, you effectively log off the instrument leaving the system protected against use until the password is reentered. To log out, scroll to field of LOGOUT function, and ENTER to logout The screen will display the message:

Protected until password entered

4.3.5 System Self-Diagnostic Test

The Model 7300A has a built-in self-diagnostic testing routine. Prepro- gramming signals are sent through the power supply, output board, preamp board and sensor circuit. The return signal is analyzed, and at the end of the test the status of each function is displayed on the screen, either as OK or as a number between 1 and 1024. (See System Self Diagnostic Test in chapter 5 for number code.) If any of the functions fails, the System Alarm is tripped.

Note: The sensor will always show failed unless identical gas is present in both channels at the time of the SELF-TEST.

Teledyne Analytical Instruments 4-9