Teledyne LXT-280 - Manual (Page 30)

Calibration LXT-280
Teledyne Analytical Instruments 20
2. With the cursor on the second line of the main menu,
magnetically activate the RIGHT HORIZONTAL key ► to enter
the calibrate mode and observe the "M" appearing in front of the
% current output value. The "M" signifies that the manual
output is locked in the manual mode.
3. Using the HORIZONTAL arrow keys, position the cursor under
the digit to be adjusted.
4. Increase or decrease the value by magnetically activating the
appropriate VERTICAL ▲/▼ arrow key.
5. When the desired value is reached, exit while leaving the
transmitter in the manual output mode, by magnetically
activating the LEFT ◄ arrow key until the cursor is under the
“M”. As long as the “M” is in front of the output % the current
output of the transmitter will be held at that filed value.
To release manual output:
1. Return to the Main Menu by magnetically activating the
appropriate VERTICAL ▲/▼ arrow key.
2. Observe that the "M" appears in front of the % current output
value. This "M" signifies that the transmitter output is in manual
mode.
3. Magnetically activate the LEFT HORIZONTAL◄ arrow key
and observe the "M" disappear, releasing the LXT-280 from the
manual output mode. The % output value will return to the real-
time current output.
4.3 Contrast Adjustment
Display contrast can be adjusted to allow for variations of ambient
lighting and viewing angle. The Contrast Menu is the uppermost menu
and is accessed with the UP VERTICAL ▲ arrow key.
Procedure:
DO 17.00 ppm
M24.3% 25.0°C