User`s manual

The COMBSIGN program shows how to store a combined list (i.e., points
and/or marker bit of an arbitrary waveform) into the AFG’s segment
memory. The list is stored in the Signed number format. The data is
transferred to the AFG using the Definite Length Arbitrary Block Data
method. The example generates a 200 point -5 V to +5 V positive going
ramp. A marker is output at the zero crossing (or center) of the ramp.
The commands are:
1. Reset the AFG
*RST
2. Clear the AFG Memory of All Sequence and Segment Data
[SOURce:]LIST[1]:SSEQuence:DELete:ALL
[SOURce:]LIST[1][:SEGMent]:DELete:ALL
3. Setup the AFG for Output
[SOURce:]FREQuency[1][:CW | :FIXed] <frequency>
[SOURce:]FUNCtion[:SHAPe] USER
[SOURce:]VOLTage[:LEVel][:IMMediate][:AMPLitude] <
amplitude>
4. Select the DAC Data Source
[SOURce:]ARBitrary:DAC:SOURce INTernal
This command selects the source that transfers data to the DAC
(see “DAC Sources” on page 280). Use
INTernal to transfer the data
using the
[SOURce:]LIST[1] subsystem.
5. Select the DAC Data Format
[SOURce:]ARBitrary:DAC:FORMat SIGNed
This command selects the SIGNed data number format.
Chapter 7 High Speed Operation 241