Teledyne 2010A - Split architecture thermal conductivity analyzer User Manual

Page 43

Thermal Conductivity Analyzer

Part I: Control Unit

Part I 4-9

Teledyne Analytical Instruments

NOTE:If you log off the system using the LOGOUT function in the

system menu, you will now be required to re-enter the pass-
word 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, press the

System

button to enter the

System

function.

CONTRAST AUTO—CAL
PWD LOGOUT MORE

Use the < > arrow keys to position the blinking over the LOGOUT func-

tion, and press

Enter

to Log out. The screen will display the message:

Protected until
password entered

4.3.5 System Self-Diagnostic Test

The Model 2010A has a built-in self-diagnostic testing routine. Pre-

programmed 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

The self diagnostics are run automatically by the analyzer whenever the

instrument is turned on, but the test can also be run by the operator at will. To
initiate a self diagnostic test during operation:

Press the

System

button to start the

System

function.

CONTRAST AUTO—CAL
PWD LOGOUT MORE

Use the < > arrow keys to blink MORE, then press

Enter

MODEL APPLICATION
SELF—TEST ALGORITHM

Use the < > arrow keys again to move the blinking to the SELF–TEST

and press Enter. The screen will follow the running of the diagnostic.

Contrast Function is DISABLED

(Refer to Section 1.6)