Mini-Circuits ISC-2425-25+ Quick Start Manual page 11

Note: During the execution of a frequency sweep, reflected power will be generated at all mismatched frequencies; it is
therefore best to perform the frequency sweep at a lower power than what is intended to be used for the actual
heating process to avoid stressing the RF generator. Another reason to use low power is that the user does not want to
already process the load during this characterization phase. Typical values of 5-10% of the intended processing power are
recommended to be used for the characterization sweep(s).
The ISC-2425-25+ signal generator supports frequencies in the 2400 – 2500 MHz range.
In the example below, an S11 frequency sweep is performed at 50 watts, in the 2400 – 2500 MHz range, with a step size
of 1MHz:
Perform the sweep at 50 watts, in the 2400 – 2500 MHz range, with a step size of 1MHz

1. Go to the Sweep menu.
2. Configure the sweep parameters appropriately.
a. Press the button for each parameter.
b. Provide input values using the numpad that appears on the right side.
c. Press 'OK' to confirm inputs.
3. Press the Sweep button to perform the S11 frequency sweep.
After performing a Sweep, the GUI visualizes the sweep data as a graph (see figure 2 below). The lowest point in the
graph represents the best match. In this case that is at 2470MHz, where the reflection amounts to roughly 12%.
Note: To return to previous page of the sweep menu, press the 'back' button in the top left.
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
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