GRAPHTEC gl820 User Manual page 78

CHAPTER 3 Settings and Measurement
(2) Move the cursor to Remove/Exchange USB Memory and press the ENTER key.
(3) You can remove the USB memory device when the message is displayed.
(4) Insert a new USB memory device.
(5) After checking that the USB memory access display turns green, press the ENTER key.
Refer to page 3-3 for details on USB memory access.
3−42
Do not remove the USB memory device before the message is displayed. Data may become corrupt and
inaccessible.
"_CHG" and a number will be appended to the file name each time you exchange a USB memory device.
Example: When data is captured to the file "TEST.GBD":
First USB memory device
Second USB memory device : TEST_CHG1.GBD
Third USB memory device
* While ring capture is On, the USB memory device cannot be exchanged.
The exchange procedure must be completed within ten minutes. Data will be lost after ten minutes have
elapsed.
USB memory
USB memory
: TEST.GBD
: TEST_CHG2.GBD