Vaisala PTB220 - Manual (Page 65)

C HAPTER 7__________________________________________________ ADJUSTMENT AND CALIBRATION
V AISALA _________________________________________________________________________ 59
LC Linear corrections
LC x
where:
x = ON or OFF
The LC command is used to activate or deactivate the linear offset or
offset/gain corrections.
The linear corrections are protected with switch SW4 (see F IGURE 7-1 ).
The switch SW4 is normally in write DISABLE position (OFF) and
the user must change it to write ENABLE position (ON) to be able to
turn the linear corrections on or off.
NOTE Changing the linear corrections on or off will automatically cancel the
valid date of calibration of the barometer (see CALD Storing the new
date of calibration command).
The listing varies according to the number of transducers in the
barometer (see CORR Listing linear and multipoint corrections).
Example of linear adjustments performed on a barometer with two
transducers:
>lc off
Linear adj.
: OFF
>lc on
Linear adj.
: ON
Reading Correction Reading Correction
1013.250 -0.100 800.000 0.050
1013.250 -0.100 1000.000 -0.020
>
NOTE Always remember to return the switch SW4 to write DISABLE
position (OFF).