Agilent Technologies E8257D PSG User Manual page 98

Basic Digital Operation
Arbitrary (ARB) Waveform File Headers
3. Return to the ARB Setup menu: Press
In the ARB Setup menu (shown in
Figure 3- 3 also shows the softkey paths used in steps four through nine.
4. Set the ARB sample clock to 5 MHz: Press
5. Set the modulator attenuation to 15 dB:
Press >
More (1 of 2)
6. Set the I/Q modulation filter to a through:
Press
I/Q Mod Filter Manual Auto
7. Set marker one to blank the RF output at the set marker point(s):
Press >
More (2 of 2)
For information on setting markers, see
8. Set the polarity of Marker 1 negative:
Press >
Return Marker Polarity
9. Return to the Header Utilities menu: Press
Notice that the Current Inst. Settings column now reflects the changes made to the current
signal generator setup in steps 4 through 8, but that the saved header values have not changed
(as shown in Figure 3- 4 on page
10. Save the current settings to the file header: Press
The settings from the Current Inst. Settings column now appear in the Saved Header
Settings column. The file header has been modified and the current instrument settings saved.
This is shown in Figure 3- 5 on page
While a modulation format is active (is on), the waveform file (AUTOGEN_WAVEFORM) plays and you
can modify the header information within the active modulation format. Once you turn the
modulation format off, the header information is available only through the dual ARB player.
NOTE If you turn the modulation format off and then on, you overwrite the previous
AUTOGEN_WAVEFORM file and its file header. To avoid this, rename the file before you turn
the modulation format back on (see
Storing a waveform file (see
84
Return
Figure 3-
Modulator Atten n.nn dB Manual Auto
to Manual >
>
Marker Utilities Marker Routing
>
Marker 1 Polarity Neg Pos
86).
86.
page 96) stores the saved header information with the waveform.
.
3), you can change the current instrument settings.
ARB Sample Clock > 5
to Manual >
15
.
Through
> >
Pulse/RF Blank
"Using Waveform Markers" on page
to Neg.
> >
Return Return Header Utilities
Save Setup To Header
page 96).
> MHz .
> .
dB
.
Marker 1
96.
.
softkey.
Chapter 3