Vishay G4-DT, Техническое руководство, Страница: 86 / 174

Technical Manual
6-4
Security locks
In the G4 instrument two security locks are included to prevent unauthorised access to the
instrument via the panel keys. The locks can be activated by parameters in menu ‘Main
menu/Parameter set-up/General’.
The following requires a login password if the corresponding lock is on.
Changing instrument clock: Operator lock.
Changing Levels: Operator lock.
Changing set-up parameters: Set-up lock (Operator lock).
Entering/using Backup Menu: Set-up lock (Operator lock).
Entering/using Restore Menu: Set-up lock (Operator lock).
Entering/using Default Menu: Set-up lock (Operator lock).
Entering/using Program Upgrade Menu: Set-up lock (Operator lock).
Entering/using File handling Menu: Set-up lock (Operator lock).
Changing values in Diagnostics menus: Set-up lock (Operator lock).
Changing Network Config: Set-up lock (Operator lock).
Entering set-up code gives access also to operator locked functions. If only operator
lock is on, the operator code is required where set-up lock is specified above.
Unlocking of “Levels” editing from the main picture, is valid until you return to the main
picture.
Unlocking of any function under the Main Menu, is valid until you leave the Main Menu.
There is also a protection from local and remote users both changing parameters. See
chapter ‘Remote Access’ section ‘Remote / Local Access’ for more information.
Codes for the security locks
When a security lock is activated the operator must enter a four digit code to get
access to the protected area. By default the valid code for both locks is ‘1 9 3 7’ ,
but the locks are not activated.
In menu ‘Parameter Set-up’, sub menu ‘General’, parameters are available to activate
the locks and to change the default code to any four-digit code.
The code for the Operator lock can only open the Operator lock.
The code for the Set-up lock will open both Set-up lock and Operator lock.
Zero setting
A basic zero setting of the force of each individual input is performed as part of the
calibration for a function block. If changes to the equipment are made later a renewed
calibration, or at least the zero setting of a calibration, should be performed.
Correction of the zero value may be needed and can rapidly be performed. Pressing the
ZERO key will set the forces of all used input channels for the selected Function Block to
zero (providing that the ZERO key is enabled in the set-up).