Teledyne LGA-3500 - Laser Gas Analysis system - Manual (Page 65)

Laser Gas Analyzer Operation
Teledyne Analytical Instruments 51
Note: The accuracy of the system depends on calibration. It is of
the utmost importance to perform a good, accurate
calibration. DO NOT accept any calibration that shows
abnormal behavior.
4.3.4.3 B ACKUP
Backup saves the current calibration coefficients to memory. The
operator can choose to backup any set of calibration coefficients they are
satisfied with. The Model 3500 has calibration coefficients backed up
before shipping.
To backup the calibration parameters, move the cursor to the
“Backup” position and press “SET”.
4.3.4.4 R ESTORE
If the current calibration parameters are found to be unsatisfactory,
you can restore previously stored backup calibration coefficients.
To restore the last saved parameters, move the cursor to the
“Restore” position and press “SET”. This loads in the last save
calibration parameters from memory replacing the currently displayed
values.
4.3.5 Com
On this menu, users can query the communication status of RS232.
Move the cursor to “Com.” on the Main Menu, and press “SET” to
enter the Com. Menu (Figure 4.29).