2635A
Users Manual
3-12
Data File Procedures
Perform the following procedures to OPEN, LOAD, STORE, and ERASE memory card
instrument data (DATA) files.

Using Data Open

Perform the procedure in Figure 3-8 to open a data file in preparation for recording
measurement data to the memory card. This procedure is automatically invoked if the
Q key is pressed and the instrument is configured for memory card operations. The
instrument automatically assigns the next sequential dAtxx file name. To assign your
own file name, use the up/down and left/right arrow keys when creating the file. When
dAt99 is reached, the instrument loops back to reuse previously assigned file names that
have been erased or skipped over. Data cannot be appended to an existing file, except in
the case where scanning is turned off and on without changing the instrument
configuration. Before using the DATA OPEN command, verify the instrument is
configured for measurement. If a file is opened and then the instrument configuration is
changed, the file will automatically be closed.
FILES
ENTER
ErASE
OPEn
dAtA
dAt99
dAtxx
dAt00
OPEn
ENTER
Typical
Required
Selecting the DATA mode. Press the FILES
key to access the FILES menu. Press the
up/down arrow keys until dAtA is displayed, then
press the ENTER key. The menu changes to
dAtA. If an error message appears, refer to
Table 3-1.
Selecting the OPEN mode. Press the up/down
arrow keys until OPEn is displayed in the dAtA
menu, then press the ENTER key. The menu
changes to OPEn and a file name is displayed.
Opening a dAtxx File. Record the displayed
dAtxx file name, where xx represents an
instrument-assigned number from 00 to 99. Or
use the up/down, left/rightarrow keys to select the
xx number. Press the ENTER key to open the
file. If an error message appears, see Table 3-1.
The "dESt" menu appears if a dAtxx file is
opened and the memory card is not selected as a
data destination (see Figure 3-4).
Init
StAt
dir
dAtA
SEtUP
FILES
ENTER
op44f.eps
Figure 3-8. Using DATA OPEN to Save Measurement Data in a File