Teledyne 7500ZA - Infrared Gas Analyzer - Manual (Page 83)

NDIR Gas Analyzer Settings and Calibration
Teledyne Analytical Instruments 67
On the Parameters screen, when ON is selected for the Backlight
Timer function, the time until auto OFF will also display. Press the
SIDE key when ON is
highlighted and the time setting
can be changed. Use the UP or
DOWN key to change the time
value and then press ENT to
save the value.
When OFF is selected, the
backlight always remains on
and does not automatically turn
off.
Contrast
The LCD Contrast is user
adjustable. With the contrast
function highlighted, use the UP
or DOWN keys to move the
slider representing the contrast.
When satisfied, press the ENT
key to save the setting.
Maintenance Mode
Enter the password and then press the ENT key to enter the
maintenance mode. The password can be set using the password setting
screen from Other Parameter/Password Set function while in the
maintenance mode. The next section describes in detail the functions
available in maintenance mode.
The default password is set at the factory to “0000.” You can enter
the maintenance mode with this value before changing the password in
maintenance mode to one of your choosing.