Keysight N9923-90001 User’s Guide 139Frequency Offset Using Power Sensor (FOPS) – Option 208FOPS SettingsFOPS SettingsThe following settings are unique to FOPS. Standard USB Power Meter modesettings, which may be useful with FOPS, are documented in that chapterstarting in “USB Power Meter Settings” on page 128Select Power Meter (USB Sensor) before making any setting in this section.How to select Power Meter (USB Sensor)— Press Mode— Then Power Meter (USB Sensor)— Then connect a USB Power Sensor to either FieldFox USB port.— For a complete list of supported Keysight USB Power Sensors, please visit:www.keysight.com/find/usbsensorsforfieldfoxMeasurement Selection— Press Measure 1— Then choose from the following:— Src Power Measure Similar to a ‘normalization’ cal, this selection guidesyou through the following steps to make a measurement at the referenceplane and then store the data trace into memory.1. Connect the power sensor to the measurement reference plane. Thisis the location to where power measurements are to be referenced.For example, to measure only the conversion loss through aconverter, attach the power sensor to the cable that connects to theconverter input.2. Press Measure. When finished, press Src Data -> Mem to store themeasured data into FieldFox memory. Preset or Mode Preset willclear the stored memory.3. Optionally choose from the following:— Re-Measure Make another measurement— Src Data View only the re-measured data.— Src Memory View only the stored memory data.— Src Data & Memory View both the re-measured data andthe stored memory data.4. Press Done— Src Power Memory Not available until source data is stored into memory.Displays only the source power memory trace.
