DH Instruments PPC3 - 6 Punit

3. OPERATION
Page 73 © 2002-2007 DH Instruments, a Fluke Company
 OPERATION
PPC3 is delivered with no active password and access to the User Level menu is open.
The user level is set to <1Low>. User levels can be changed freely until a password
has been created.
To access the LEVEL function
press [SPECIAL], <5prefs>, <5level>.
The display is:
1change user level
2edit password
Selecting <1change user level> brings
up the restriction menu:
Restrictions: 1none
2low 3medium 4high
The cursor is on the current restriction level. Select a different level or
or [ESC] back to the MAIN RUN screen.
If no password is active, selecting
<2edit password> displays the user
password and allows it to be edited.
Password: pppppp
0 disables password
Once a password has been entered, the user level cannot be changed without
reentering the password.
Passwords can be up to six numbers in length and cannot start with a zero.
If <0> is entered, the password is made inactive and the user will not be required
to enter a password to access the user level menu. This condition, with a
security level of <2low>, is the factory default.
If there is an active password, the
PPC3 password entry screen appears.
The user must enter the user defined
password or the factory secondary
password to proceed further:
PPC3 SNnnnn-xx
Password: pppppp
The first field, <nnnn>, is the serial number of the PPC3, followed by a second field,
<xx>, that represents the number of times that a secondary password has been used.
The second field, <xx>, increments each time a secondary password is used.
The third field, <pppppp> is for user entry of the normal password.
The factory secondary password is available in case the user’s password has
been misplaced or forgotten. It can be obtained by contacting a DHI
Authorized Service Center (see Table 31). The factory secondary
password is
different for all PPC3’s and changes each time it is used.
3.5.6 <6PUNIT>
 PURPOSE
To customize the selection of pressure units of measure that are available in the [UNIT] key
menu.
 PRINCIPLE
The [UNIT] function key makes available a choice of six default pressure units (US or SI units
depending on whether the PPC3 has been factory set as US or SI) (see Section 3.3.2).
PPC3 also supports many commonly used units other than those included in the default set up.
These units can be made available for active selection by customizing the UNIT function