Agilent Technologies E1445A, User'S Manual And Scpi Programming Manual

Page: 253 / 534

Selecting the
Waveform Segments
To select a waveform segment, determine the address of the waveform
segment and include the address in the Combined Sequence List. Do the
following to determine the address:
1. Select the Waveform Segment
Use the
[SOURce:]LIST[1][SEGMent]:SELect <
name
>
command,
where
<
name
>
is the name of the waveform segment to be output.
2. Get the Selected Waveform Segment Address
Use the
[SOURce:]LIST[1][:SEGMent]:ADDRess?
query command to
get the address. The address is the start location of the waveform
segment in segment memory.
To use the returned value in the Combined Sequence List, divide the
returned value by 8. For example, if the returned value is 2048, the
actual address is 2048 / 8 = 256. This is necessary due to the
hardware requirements of the AFG.
3. Add the Address to a Data Value in the Combined Segment
Sequence List
Selecting the
Marker Enable
To select the marker enable, add the value of bit 18 to the Data Byte in the
Combined Segment Sequence List.
Selecting the
Repetition Count
Bits 20 through 31 select the repetition count. Do the following to set the
repetition count:
1. Select the Repetition Count Value
The repetition count bit value = 4096 - desired repetition count.
For example, 2 repetition counts = 4096 - 2 = 4094.
2. Shift the Repetition Count Value left by 20
3. Add the Shifted Repetition Count Value to the Data Byte in the
Combined Segment Sequence List
Chapter 7 High Speed Operation 251