DH Instruments PPC4, Руководство по эксплуатации и обслуживанию

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3. OPERATING PRINCIPLES
Page 47 © 2009 DH Instruments, a Fluke Company
3.2.26.3 Time

PURPOSE
To view and edit the PPC4 internal time and date settings.
Note
•
The PPC4 date and time are set to United States Mountain
Standard Time in the final test and inspection process at
the factory. If desired, use the TIME and DATE functions
to set your local time and date.
•
The PPC4 has an internal real time clock that is used for
date and time stamping calibrations and internal logs.

OPERATION
For Basic Interface see Section 4.5.5.3.
For Advanced Interface see Section 5.7.7.3.
3.2.26.4 Language

PURPOSE
To specify the language for PPC4 Advanced Interface display, headings, menus
and screens.
Note
•
The language selection affects to headings, field names
and on-screen messages. Numeric displays, including
pressure units, buttons and DHI trademarked terms, such
as AutoRange, are always in English.
•
Remote commands and their responses are always in
English, regardless of language setting.

OPERATION
Languages other than English are not available.
3.2.26.5 Security

PURPOSE
To set user protection levels to restrict access to certain functions and to edit the
password required for changing user levels.

PRINCIPLE
PPC4’s front panel user interface provides the means to access all PPC4 user
defined data, settings and functions including calibration data. Inadvertent,
uninformed or unauthorized altering or deleting of data, settings and functions
could require extensive reconfiguration by the user and might cause invalid
readings and behavior. For these reasons, depending upon the application in
which PPC4 is being used, it may be desirable to restrict access to certain
functions for certain users. The user level function provides a means of restricting
access to certain functions. Four different levels of security are available.
Access to changing security levels can be left open, or be protected by a password.