LTH Electronics HPT63, Руководство по эксплуатации

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6 Menu Access
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6 Menu Access
The instrument parameters are protected against unauthorised or accidental
tampering by access codes.
There are three levels of access – Basic, Level 1 and Level 2. For Basic access, no
access code is required but access is restricted to the main display modes. A user
with Level 1 access can change some parameters and Set Point trigger levels. A
user with Level 2 access has full access to all user-selectable parameters. The pull-
out chart at the rear of this manual shows the access permitted the three levels.
When the unit is switched on, it shows the main display screen. To reach the menu
system from there, press the key to reach the Access Code screen and then
enter the Level 1 or Level 2 access code. A character on the right of the display
indicates whether or not access is permitted. The character will be a key for
permitted access and a padlock for denied access.
As supplied, the unit has the following default access codes:
0001 Restricted access at Level 1.
0002 Full access at Level 2.
On first use, it is recommended that the user change the access codes to restrict
unauthorised access. See
Section 6.1 Changing the Access Code .
Entering the access code for a level, e.g. for Level 2, gives access to that level. The
procedure for entering the access code is detailed in
Section 4.4 Number entry . On
entering a valid code, the padlock character on the display changes to a key.
6.1 Changing the Access Code
On first use, it is recommended that the user change the access codes to restrict
unauthorised access.
You need Level 2 access in order to change the Level 2 access code. You can
change the Level 1 access code if you have either Level 1 or Level 2 access.
1. From the Main Display screen, press once to reach the Access Code
screen.
2. Use the and keys to reach the Set Level 1 (or 2) Code screen.
3. Use the , and keys to edit and store the new access code, as
described in Section 4.4 Number entry .