User`s manual

Lock-Stepping
Multiple AFGs
The LOCKSTEP program configures two AFGs such that they share the
same trigger source. A “master” AFG is programmed to output its triggers
on
ECLTrg trigger line 0. The trigger source of a “servant” AFG is set to
ECLTrg 0. Thus, both AFGs output waveforms (sin(x)/x) at the same
frequency, and changing the frequency of the master changes the frequency
of the servant simultaneously.
The programming sequence for lock-stepping multiple AFGs is given below:
1. Set the reference oscillator source for the master and slave as
desired or use the default source
[SOURce:]ROSCillator:SOURce <source>
2. Set the trigger source of the master AFG as desired. Set the
trigger source of the slave AFG to the source driven by the master
TRIGger[:STARt]:SOURce <source>
3. Set the frequency mode
[SOURce:]FREQuency[1]:MODE <mode>
4. Set the output frequency of the master
[SOURce:]FREQuency[1][:CW | :FIXed] <frequency>
or
[SOURce:]FREQuency2[:CW | :FIXed] <frequency>
5. Set the output function
[SOURce:]FUNCtion[:SHAPe] <shape>
6. Set the signal amplitude
[SOURce:]VOLTage[:LEVel][:IMMediate][:AMPLitude] <amplitude>
176 Arming and Triggering Chapter 5