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85330A Multiple Channel Controller 6-7
Programming
Dual Source Multiple-Frequency Measurements
Dual Source Multiple-Frequency Measurements
When you are using multiple-frequency measurements with an 85309A
frequency converter, you can choose how the sources are controlled:
• You can allow the 8530A to control source frequency switching, or...
• You can use the Fast Source Control configuration, where source
frequency switching is controlled by the multiple channel controller.
8530A Control of Sources
Description If you choose to control source frequency switching with the 8530A (and
you are using the dual source multiple-frequency configuration), you cannot
use the Fast Data Acquisition modes of the receiver. Refer to the
programming “Example 2” on page 6-25.
To Use this
Configuration
Operation in this mode is nearly identical to that described in “Single Source
Multiple-Frequency Configuration” on page 6-5. When the sources are
under 8530A control, the multiple channel controller must be set to the
IMMediate triggering mode:
RUNT:SOUR:SOURCE1:TRIG IMM;
RUNT:SOUR:SOURCE2:TRIG IMM;
Use GPIB address 19 for the RF source, and 18 for the LO source.