QRAE II User Guide
Page 25
4.5.1 Enter Programming Mode
To enter Programming Mode, hold down [MODE] and [Y/+] simultaneously for three
seconds. To exit this mode, press [MODE] repeatedly until you see “Back.” Then press
[Y/+] to select “Back.” Then the main concentration display shows.
When you enter Programming mode, you see:
Enter Password?
0000
OK Cancel
Increase a number by pressing the [Y/+] key (1, 2, 3 ... etc.). Note: The numbers advance
until the number 9 and then “wrap around” to 0 again.
Advance to the next digit by pressing the [MODE] key (0000, 0000, etc.). Note: The
display has a “wrap-around,” so once you reach the last digit, pressing [MODE] advances
to the first digit again.
Once you are satisfied with the password, advance to OK, and press [MODE].
If you want to cancel, advance to Cancel and press the [Y/+] key.
Note: The default password is 0000. If you change the password, write it down and save
it in a safe location. You do not have to change the password from 0000. You can simply
continue using 0000, step through the digits and then press the [Y/+] key to enter
Programming Mode.
As Programming Mode is entered, datalogging is paused. A message that says “Datalog
Paused!” briefly appears on the display before the first submenu item, “Calibrate
Monitor” is shown.
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