Tektronix CMD 80, User Manual

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Appendix G: Special Remote Commands
G–4
CMD 80 Digital Radiocommunication Tester User Manual
Table G–1: Special remote commands (cont.)
Command Notes State Values
CONFigure:SPECial:AMTest:TQUality:MNDistortion:GENerator <OFF | ON> AMT
19, 20
CONFigure:SPECial:AMTest:TQUality:MNDistortion:GENerator? AMT
19
This command turns the AF generator on or off for the Analog transmitter mod noise and hum module test.
20
This command initializes the associated test resources (generators, filter setups, ect.) starts the generator, and then
drops to an idle state — never checking the DSP to see if the measurement results are ready. The analog test holdoff
timer interacts with the generator/modulator control since the holdoff timer starts when the generator/modulator is
started. This interaction speeds up the return of test results. Note the following interactions between tests and genera-
tors:
1. If a generator is started, and a test other than the one directly associated with the generator is invoked, the
generator will be turned OFF.
2. If a generator is started and its associated test is invoked, the generator will be left ON at the end of the test.
3. If a generator is running, and a command to turn on a different generator is invoked, the first generator setup
will be turned off and the second generator setup will run in its place.
Generator frequency or amplitude may be changed on the fly over GPIB. This change, or practically any parameter
change, will cause approximately 100 ms of dead time. This is due to the fact that generators and other resources are
always programmed form the base state (amplitude and frequency at zero).