Hardy HI 6500 Series - Manual (Page 147)

Security 137
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To modify the calibration parameters use the UP or DOWN button to select the calibration
menu and press the ENTER button. The password dialog box will appear; if the correct 4
digit alphanumeric character sequence is entered the calibration lock will be disabled until
you exit the calibration menu; at which time the calibration lock will be automatically reset
to the original setting.
If an incorrect password is entered the menu will return to the configuration menu.
Modifying the Read Only Parameters
The security and calibration parameters have their own password protection. The
parameters discussed in this section are those listed under communication, diagnostics,
display, filter, language, operation, and setup.
With the exception of the security and calibration parameters, all parameters can be read by
the operator once the operator is navigating inside the configuration menu; however the
ability to change these parameters can be password protected.
If the read only password is enabled and a parameter is selected, the password dialog box
will appear. If the 4 alphanumeric character sequence is entered the read only lock will be
disabled until you exit the configuration menu; at which time the configuration lock will be
automatically reset to the original setting.
If an incorrect password is entered the menu will return to the configuration menu.