BUCHI DuMaster D-480 - Manual (Page 91)

Operation Manual D-480 ©BÜCH Labortechnik AG
5 - Work performed by the system administrator 91
Checking documents for authenticity
What signature is checked?
Only those signatures can be checked that are enabled in the "Verify digital signature" dialog and if
their radio button is checked; for example the "created" signature. If the document already has
multiple signatures, the user must select one to check.
Note
Note the following:
 The signature program must be installed.
 Signatures can only be checked or created if 21 CFR Part 11 functionality is enabled.
Checking a signature
Proceed as follows:
 Open the document to check.
 Open the "Verify digital signature" dialog in the operating software by selecting File > Verify.
 Check the radio button next to the signature you want to check.
 Click Verify. The program begins to check. The result is displayed in a message window and
indicates whether the signature is authentic or not. "Good signature from..." indicates that the
signature is authentic.
Signing documents
What signature is allocated?
The signature that is enabled in the "Sign" dialog and whose radio button is checked is allocated; for
example, the "created" signature is allocated. The following rules apply:
 The "created" signature is assigned to a document first.
 The "checked" signature is assigned to a document if it already has a "created" signature.
 The "released" signature is only assigned to a document if it already has a "created" and a
"checked" signature.
Note
Note the following:
 The signature program must be installed.
 Documents can only be signed if 21 CFR Part 11 functionality is enabled.
 Only sign finished documents. After signing, the document is read-only.
Signing documents
Proceed as follows:
 Open the "Sign" dialog in the operating software by selecting File > Sign.
 Enter your name set up in the signature program in the "Name" field.
 Enter your password set up in the signature program in the "Password" field.
 Click Sign. The program checks whether you are authorized to sign the document. The result is
displayed in a message window:: "GOOD_PASSPHRASE" indicates that you are authorized to
create the signature. The signature has been created.