Chapter 4 93
Basic Digital Operation
Arbitrary (ARB) Waveform File Headers
When you turn the modulation format off, the AUTOGEN_WAVEFORM file remains in volatile waveform
memory (WFM1) and can be selected again for playing only by the dual ARB player. If you turn on another
Arb modulation format or change ESG parameters and settings, the AUTOGEN_WAVEFORM file will be
overwritten by a new AUTOGEN_WAVEFORM, file header, and marker file.
If you want to keep the configuration setup in the AUTOGEN_WAVEFORM file, save it, using a different name,
to NVWFM. The associated file header and marker file will automatically be saved. For information on
storing files after the modulation format is turned off, see “Storing Waveform Segments to Non-Volatile
Memory” on page 112.
NOTE Each time an ARB modulation format is turned on, a new AUTOGEN_WAVEFORM along with
a default marker and default file header are generated which overwrites the previous
AUTOGEN_WAVEFORM file, marker file and file header.
When the waveform file is stored to non-volatile memory (NVWFM), the associated file header information
is automatically saved to the signal generator’s /USER/HEADER directory and the marker file is
automatically saved to the signal generator’s /USER/MARKERS directory. When a waveform file, residing
in WFM1, is selected for playback, the file header settings along with the marker file settings are
automatically applied to the ESG.
The following procedure will generate an AUTOGEN_WAVEFORM file and file header using the ARB
CDMA2000 modulation format. This procedure for generating an AUTOGEN_WAVEFORM file and file header
applies to all the Arb formats.
1. Turn on the ESG and then press
Preset.
2. Press
Mode > CDMA > Arb CDMA2000 > CDMA2000 Off On to On. See Figure 4-1 below.
The ESG creates the AUTOGEN_WAVEFORM file along with a default file header and default marker file when
the modulation format, CDMA2000 in this example, is turned on. At this time, the file header does not have
signal generator settings or parameters for the currently playing AUTOGEN_WAVEFORM file. You must
modify the default file header settings and parameters for the active modulation and then save the file header
information using the
Save Setup To Header softkey.
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