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3.4.4 Passcode
Access to the automatic span calibration and the
following subdirectories of the Main Menu can be
restricted through the PhD Lite’s passcode feature:
ALARMS, CALIBRATION, OPTIONS, and SCREEN.
The DATALOGGER subdirectory will also be restricted
on units with the datalogger upgrade.
To enter the Passcode subdirectory of the Options
Menu:
1. Enter the Options Menu as discussed in section
3.4.1 and use the navigation arrows to highlight
PASSCODE.
USER_MODE
SEC_BEEP
PASSCODE
LANGUAGE
DECIMAL
T_UNITS
EXIT
2. Press the MODE button. The following screen will
then be shown.
CHANGE_PASSCODE
PASSCODE_ON/OFF
SPAN-LOCK
EXIT
3.4.4.1 Enable/Disable passcode
To enable or disable the passcode:
1. Enter the passcode subdirectory of the Options
Menu as discussed in section 3.4.4.
CHANGE_PASSCODE
PASSCODE_ON/OFF
SPAN-LOCK
EXIT
2. Use the navigation arrows to highlight
PASSCODE_ON/OFF and press the MODE button.
The up and down navigational arrows are then
used to toggle between ENABLED and DISABLED.
PassCode
DISABLED
EXIT
↓↑
PassCode
ENABLED
EXIT
Note: If this is the first time that the passcode has
been enabled, the PhD Lite will automatically
prompt you to enter a new passcode. See section
3.4.4.2 below for more details.
3. Once the desired setting is displayed, press the
MODE button to enter the setting.
Save Changes?
YES
NO CANCEL
4. Press the MODE button with YES highlighted to
save the new setting.
3.4.4.2 Changing the passcode
To change the passcode:
1. Enter the passcode subdirectory of the Options
Menu as discussed in section 3.4.4.
CHANGE_PASSCODE
PASSCODE_ON/OFF
SPAN-LOCK
EXIT
2. Use the navigation arrows to highlight
CHANGE_PASSCODE and press the MODE
button. The new passcode screen will then be
shown. Use the right and left navigation arrows to
select the digit for change and then use the up and
down navigational arrows to change the digit itself.
New Passcode
ENTER
0
0 0 0
EXIT
→↑
New Passcode
ENTER
0
1
0 0
EXIT
3. Once the desired passcode is shown, press the
MODE button once to highlight ENTER.
New Passcode
ENTER
0 1 0 0
EXIT
4. Press the MODE button to enter the new passcode.
The PhD Lite will then proceed to the verification
screen. The new passcode will have to be re-
entered.
Verify Passcode
ENTER
0
0 0 0
EXIT
→↑
New Passcode
ENTER
0
1
0 0
EXIT
5. Once the passcode has been re-entered, press the
MODE button. ENTER will then be highlighted.
New Passcode
ENTER
0 1 0 0
EXIT
6. Press the MODE button again to confirm the new
passcode.
New PassCode
Saved
Note: Although 0 0 0 0 is a valid initial passcode
value, once the passcode has been changed, 0 0 0 0
becomes invalid and may never be used as a
passcode again.
3.4.4.3 Span
Lock
With the Span Lock feature enabled, the instrument will
prompt for the passcode prior to entering the automatic
span calibration subroutine.
Note: The passcode feature must be enabled for the
Span Lock feature to function. See section 3.4.4.1
for instructions on enabling the passcode feature.
Summary of Contents for PhD Lite
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