User manual
42
Documentation, Storage and Recall
REF key in the VERTICAL section of the control panel.
With the soft menu key RE1 to RE4 up to 4 references
can be activated. The top soft menu SOURCE allows
you to use the universal knob to select the source for the
reference to be saved. You can select from the activated
channels and mathematical curves. Press the soft menu
key DISPLAY to display the selected reference curve or to
update the current reference curve.
To load a reference from a USB stick or the internal me-
mory, open the soft menu LOAD. This shows a window
displaying the internally stored references. You can select
the desired target reference curve in the top menu item
andbypressingLOADinthelemanager.Tocomplete
loading and displaying the reference, press LOAD in the
lemanagermenuagain.Tosaveareference, press the
SAVE key, determine the source,storagelocation,le
name and curve, and press the soft menu key SAVE (with
the disk icon). The FILE NAME can be changed or adjusted
to the corresponding setting (REF ist the default label). You
can use the soft menu key COMMENT to enter a comment
whichwillbedisplayedinthelemanagerfooteroncea
lehasbeenselected.
10.3 Traces
In addition to references, you can also store A/D converter
data. Traces can only be stored to externally connected
USB sticks (not internally). Depending on the selected time
base and sample rate in the ACQUIRE menu (AUTOMATIC,
MAX. SAMPLE RATE or MAX. WAVEFORM RATE) the
maximum read-out measurement points varies..
In the soft menu STORAGE the USB connection on the
front of the instrument is selected as storage location.
Selecting the respective storage location is possible when
a USB stick has been recognized. If a USB stick is connec-
ted, you can also change, create or delete directories. Use
the soft menu key SORT ENTRIES to sort several settings
lesbyname,type,sizeordate.PressACCEPTDIR.to
conrmthetargetdirectoryandyouwillautomaticallyre-
turn to the curve main menu.
The full memory can only be read out in STOP mode with the
maximum sampling rate setting (ACQUIRE menu).
The soft menu TRACES allows you to use the universal
knob in the CURSOR/MENU section to select a channel
which will be saved as a curve. You may only select chan-
nels that have been activated via channel keys. You can
also save all visible channels simultaneously.
The soft menu key FILE NAME opens the menu for the
name entry, where you can use the universal knob or the
KEYPAD key in the CURSOR/MENU section to enter a
nameandconrmyourentrybypressingACCEPT(TRCis
the default name). The curve main menu will display auto-
matically. You can open a selection window by pressing
thesoftmenukeyFORMATtodeterminetheleformat.
The universal knob in the CURSOR/MENU section allows
you to select the desired format. You can choose from the
following formats:
❙ BIN (MSB/LSB):
AbinarylemaycontainanytypeofBytevalue.The
captured curve data will be stored without any time
information.
❙ FLT (MSB/LSB):
AFLTlecontainsthecaptureddataasvoltagevalues.
ComparedtoaFLTle,thecapturedamountofdatafora
CSVleis16timesgreater.Thevoltagevaluesarestored
in the Float format (4 Byte Float, binary, Big Endian). This
lecanbereusedinprogramswrittenbyusers,for
instance.
❙ CSV (Comma Separated Values):
InCSVles,curvedataisstoredintableformat.Each
table row is separated by a comma.
Example: Trace with all visible channels
[s],CH1[V],CH2[V],CH3[V],CH4[V]
-4.99500E-07,-2.601E-03,2.566E-02,-1.003E-04,1.139E-04
-4.99000E-07,-6.012E-04,-5.434E-02,-1.003E-04,-8.611E-05
-4.98500E-07,-6.012E-04,-5.434E-02,9.973E-05,-8.611E-05
-4.98000E-07,1.399E-03,-5.434E-02,2.997E-04,-8.611E-05
❙ T X T:
TXTlesareASCIIlesthatonlycontainamplitude
values (no time values). Amplitude values are separated
by a comma. The value pairs are listed as single values
withoutidentication.
Example:
1.000E-02,1.000E-02,1.000E-02,1.000E-02,3.000E-02
❙ HRT (HAMEG Reference Time): Files with this extension
are reference curves of the time domain. If the displayed
curve is saved in this format, it can be used in the
reference menu. The HRT format also allows you to
generatelesthatcanbereloadedintotheoscilloscope
via reference menu.
You can use the universal knob in the CURSOR/MENU
section to select in the soft menu POINTS whether to read
out the display memory or the entire acquisition memory.
You can use the soft menu key COMMENT to enter a
commentwhichwillbedisplayedinthelemanagerfooter
Saving of all visible channels is only possible with the CSV format
and can not be changed.
Fig. 10.3: Loading and storing references