DATABASE MODE
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OM033-4 - CA850 Series 5 Operating Manual
10.4.7.1 USB Import
This function will transfer test records to the database from a USB memory device
(connected to the ‘USB
PRINTER’ socket). Please allow the USB memory device to initialise prior to selecting this command (up to
20 seconds is suggested) and ensure that the activity light on the USB memory device is extinguished before
removing it.
There must be a single database file on the USB memory device and this file must be named
‘exportdata.csv’
(
or ‘exportdata.cry’ if encryption is used). If an encrypted data file is being imported and the password is
incorrect then the message “0 records read” will be displayed briefly.
10.4.7.2 USB Export
This function will transfer test records from the database to a USB memory device
(connected to the ‘USB
PRINTER’ socket). Please allow the USB memory device to initialise prior to selecting this command (up to
20 seconds is suggested) and ensure that the activity light on the USB memory device is extinguished before
removing it.
An exported database will be named
‘exportdata.csv’ (or ‘exportdata.cry’ if encryption is used). This filename
may be changed to something more meaningful,
(for example ‘JSmithLtdPatients13thMarch2007.csv’) but if
it is to be imported back to the audiometer (for example if it was a backup that needs to be restored) then the
filename must be changed back to that specified above.
10.4.7.3 Set Password
This function is used to enter a 16-character alphanumeric password to enable USB encryption for both import
and export functionality.
Press the ‘OK’ softkey when complete.
If a 16-character password is entered and USB Export is then performed, the exported database will
always
be named
‘exportdata.cry’ and will be associated with this password.
Similarly if a 16-character password is entered, USB import will
always
search for a file named ‘exportdata.cry’
and attempt to decrypt it using this password.
Once set, the password remains valid and will be used to create an encrypted file for export to the USB
memory device. This file can then be decrypted on a PC into CSV format, for example by using the freeware
application available from Amplivox (see Appendix 1) and entering the 16-digit password that was used to
encrypt the file.
If a data file that was encrypted on a computer (for example by using the freeware application) is to be
imported, the 16-digit password that was used for encryption must be entered into the CA850 before the import
is performed. The CA 850 will then decrypt the database during import. This password will then remain valid
until changed or deleted.
The password may be changed at any time simply by deleting the characters, entering a new password and
pressing the ‘OK’ softkey. The password may be deleted (thus removing the encryption function) by deleting
all 16 characters and then
pressing the ‘OK’ softkey.
The password must have 16-characters for the encryption programme to operate. If fewer than 16-
characters are used then USB Export will generate random data and USB Import will be unable to read
the data file.
If the user-selectable password is lost then the data will no longer be accessible.
10.4.7.4 Cancel
Pressing this softkey returns to the previous page.
10.4.8
Erase
Pressing the ‘Erase’ softkey will allow one or more data records to be deleted as described below.
10.4.8.1 This record
Pressing this softkey will delete the selected test record (use the
and
keys).
10.4.8.2 Filter items
Pressing this softkey will delete the filtered test records. Further confirmation is required.
10.4.8.3 All items
