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Chapter 3 75
Basic Digital Operation
Arbitrary (ARB) Waveform File Headers
Figure 3-2 Custom Digital Modulation Default Header Display
2. Save the information in the Current Inst. Settings column to the file header:
Press
Save Setup To Header.
Both the Saved Header Settings column and the Current Inst. Settings column now display
the same settings; the Saved Header Settings column lists the settings saved in the file header.
The file header contains the following signal generator settings:
32-Character
Description:
A description entered for the header, such as a the waveform’s function (saved/edited with the Edit
Description key, see Figure 3-2 on page 75).
Sample Rate: The ARB sample clock rate.
Runtime Scaling: The Runtime scaling value. Runtime scaling is applied in real-time while the waveform is playing.
This setting can be changed only for files in the dual ARB player.
Marker 1...4 Polarity: The marker polarity, positive or negative (described on page 102).
ALC Hold Routing: Which marker, if any, implements the PSG’s ALC hold function (described on page 90).
RF Blank Routing: Which marker, if any, implements the PSG’s RF blanking function (described on page 100).
I/Q Mod Filter: The I/Q modulator filter setting. The modulator filter affects the I/Q signal modulated onto the RF
carrier.
I/Q Output Filter: The I/Q output filter setting. The I/Q output filter is used for I/Q signals routed to the rear panel
I and Q outputs.
Mod Attenuation: The I/Q modulator attenuation setting.
Lets you enter/edit the
Description field
Clears the Saved Header
Settings column to the
default settings
Saves the Current Inst.
Settings column to the
Saved Header Settings
column
Current signal generator
settings
Page 1
Default Header Settings
Note:
Parameters that are inactive (such as
Runtime Scaling) can be set only in
the dual ARB player.
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