User manual

191
Data Management
10
Write Cache (available with Extended Acoustic Pack)
A low Write Cache level indicates that the SD Card is per-
forming well. The optional Extended Acoustic Pack with
simultaneous 100ms logging and linear wav-file recording
results in high data volumes being written to the SD Card.
Some non-original SD Cards may overload (OVLD), caus-
ing the loss of some measurement data. Verify the Write
Cache of your SD Card during your measurements. Use
only original SD Cards. We recommend SD Cards from the
manufacturers SanDisk and Transcend.
Original SD Cards ensure that all measurement
data and audio wav-files are stored in good or-
der on the SD Card. Non-original SD Cards may
lead to low performance or errors.
Order information: see chapter Accessories.
In case the SD Card is full, you can insert the
original spare SD Card into the XL2 and contin-
ue with the measurements. The XL2 generates
the projects and system folders automatically.
Memory Structure of SD Card
1
2
3
1
Projects
The folder Projects contains subfolders with the stored
measurement results. The default subfolder name is
“MyProject”. You can create further individual subfolders.
2
XL2.htm
This file opens the XL2 instrument status page, with Serial
Number, Firmware and Installed Options.
The page also provides links for online
Firmware updates•
Activation of Options•
3
XL2_SYS
The XL2 system folder contains a file with serial number,
firmware version and installed options - DO NOT EDIT THIS
FILE.