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Replaying stored data
Data stored on floppy disks can be retrieved and displayed online at any time, whether data storage is active
or not. All data is stored as individual files and is retrieved by filename. To retrieve a file from disk, follow
the procedure in Table 7-5.
Step
1
Insert the disk containing the desired file into the instrument.
2
Select DATA STORAGE and then REPLAY FROM DISK. A list of filenames of all the files on the
disk will appear. The filename extension identifies the type of data in the file. Note: Events can
only be replayed with SDA data analysis software.
.LNT Trend
.LNA Alarms
.LNE Events
.LND Diagnostics
.LNU Unit Data
3
Select a start time within the first and last times. Data replay will begin at this time. For trends,
select horizontal or vertical replay format and screen size (timebase).
4
Select Replay to view the data.
ATTENTION
If you are replaying data from a "non-current disk," keep in mind that the instrument will continue acquiring data
and holding it temporarily in its active memory (RAM) until you insert a proper disk for storage. If you spend too
much time replaying data, the instrument could run out of active memory space. If this occurs, a storage full
warning message will be displayed. See Table 6-8 for an explanation of the various warning messages.
Examining replay data
For details on examining replay trend data, see Section 6.2, Interacting With Primary Displays. To examine
replayed alarms, events, and diagnostics, use the Up Arrow or Down Arrow keys.
Reading Data Storage Messages
See Data Storage Messages in Table 6-8 for message descriptions.
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Table 7-5 Data Storage Replay Procedure
Action
VPR &VRX – User Manual
Online Operation Using Menus
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