RKI Instruments GX-2009 - Manual (Page 47)

Setting Commands • 47
instructions to calibrate an instrument using Calibration Mode or
User Setup Mode.
With Cal. Limit Check set to None, no confirmation during
startup or calibration is required to use the GX-2009 if it is past
due for calibration.
LCD Backlight Time
This setting indicates the length of time the LCD backlight is on
after when you press any button. The minimum setting is 0
seconds. The maximum setting is 60 seconds. The factory
setting is 30 seconds.
Auto Zero Adjustment
With Auto Zero Adjustment set to Off (factory setting), no
automatic fresh air adjustment will take place during a
GX-2009’s startup sequence when it is turned on.
With Auto Zero Adjustment set to On, the GX-2009 will
perform an automatic fresh air adjustment during the startup
sequence when it is turned on.
Zero Adjustment On Demand
With Zero Adjustment on demand set to On (factory setting),
you can perform a fresh air adjustment in Measuring Mode by
using the GX-2009’s AIR button.
With Zero Adjustment on demand set to Off, the GX-2009’s
AIR button is not operational in Measuring Mode, so it is not
possible to perform a fresh air adjustment in Measuring Mode.
You can still perform a fresh air adjustment in Calibration Mode
and User Setup Mode.
Enable User Password
With Enable User Password set to On, the GX-2009 prompts
you for a password when you enter Calibration Mode or User
Setup Mode.
With Enable User Password set to Off (factory setting), no
password is required to enter Calibration Mode or User Setup
Mode.