Mini-Circuits ISC-2425-25+ Quick Start Manual page 21

Going forward, the DLL algorithm will do the frequency tracking:
Use the $DLCS command to configure DLL to start tracking at 2440 MHz (at the best-known match).

Use the $DLES command to turn on DLL.

Use the $ECS command to turn on RF output again.

The DLL is now enabled and is tracking the optimum S11 frequency as the material heats.
The momentarily used (locked-) frequency for DLL can be viewed using the frequency get command.
Use the $FCG command to view the frequency as it changes over time.

This shows the DLL is tracking the match downward in frequency as the best match frequency continues to shift over
time.
Finish:
With the frequency optimized, the material will be processed as per the user requirements. Of course, the exact timing
of this process depends on the size of the material and the RF power used and needs to be determined by the user.
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