LOCAL OPERATION
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B3476
Fig. 3-30 Current background errors display (showing example errors)
(2) Where there are more background errors than can be displayed on one screen page, the [Next
Page] and [Previous Page] soft keys will be displayed to enable more than one page of
errors to be viewed.
(3) Press [EXIT] to return to the Utilities Selection Menu 1.
Protection locking and unlocking (menu 1)
To prevent accidental interference with the contents of internal memories, internal data is
protected by secure key sequences. There are two levels of protection. The most secure, Level 2,
is used for memory erasure, elapsed time reporting and for servicing purposes such as altering the
calibration data of the instrument. Level 1 protection is used for display blanking and memory
protection.
The lock and unlock utility is selected as follows:
(1) Select [Lock & Unlock] to display the Lock & Unlock Utility. When Level 1 and Level 2 are
both locked the display will be similar to Fig. 3-31 below.
B3477
Fig. 3-31 Lock and unlock utility (during password entry)
(2) To unlock to Level 1 press [Unlock Level 1] and enter a 4-digit password (the default is
1234). As each digit is entered an asterisk is displayed. Terminate with [ENTER].
(3) To unlock to Level 2 press [Unlock Level 2] and enter a 6-digit password (the default is
123456). As each digit is entered an asterisk is displayed. Terminate with [ENTER].
(4) When successful, UNLOCKED is displayed on the screen against the appropriate level and
the [Unlock Level 1] or [Unlock Level 2] key is blanked. If the entered password is not
recognized by the instrument the password will have been changed by operating personnel.
(5) To lock the instrument, press the appropriate [Lock Level 1] or [Lock Level 2] key.
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General