Step 5 - Configure Power; Step 6 - Start Heating - Mini-Circuits ISC-2425-25+ Quick Start Manual

The command ($SWP,1,2400,2500,10,50,0) returns forward and reflected RF powers in watts at 10MHz intervals, which
show that the match is best around 2470MHz. At that frequency the reflection is only around 12% of the forward power
(5.92W / 50.04W = 0.118 → 12%).
Note: For the sake of this guide, a large step size is used in the sweep to keep the resulting data easy to work with.
Under normal circumstances a smaller step size like 1 MHz is recommended as it would yield a better resolution along
the frequency axis.
Tip: In general, large loads will generate "broad", generally well-matched S11 sweeps, whereas small loads will generate a
more structured S11 spectrum with only few frequencies allowing efficient energy delivery.
Now that the best match frequency has been found, the frequency of the ISC-2425-25+ board needs to be changed to
2470MHz.
Use the $FCS command to set the frequency to 2470MHz.

3.5 Step 5 – Configure power
For this example, the material will be heated with the maximum available power. The Mini-Circuits ZHL- 2425-250X+
PA is a 250W model, so 250W output power will be used.
Use the $PWRS command to set the power to 250W.

3.6 Step 6 – Start heating
With the right frequency and power configured, the RF output may now be switched on. Note:
Before turning on the RF output, ensure the RF cannot leak from the cavity.
Use the $ECS command to turn on RF output.

AN-50-001 Rev.: OR DCO-000695
This document and its contents are the property of Mini-Circuits.
(11/01/21) File: AN-50-001.docx
Page 17 OF 19