142 Keysig ht N9923-90001 User’s GuideFrequency Offset Using Power Sensor (FOPS) – Option 208FOPS SettingsRx = 5.8 GHz to 6.8 GHzPower Sensor SettlingThe following two settings work together to allow you to choose the rightcompromise between measurement speed and accuracy.Each power sensor read ing is considered “settled” when either:— The difference between two consecutive readings are within the Tolerancevalue.— Or the Max (number of) Readings has been made.The readings that were taken are averaged together to become the displayedreading.How to choose Power Sensor settling— Press BW 2— Then Tolerance. Enter a value in dB between 0 and 10 using the numerickeypad, the arrows, or the rotary knob. Tolerance of 0 will never beachieved, so the Max Readings will always be made. Press Enter— Then Max Read ings. Enter a value between 1 and 20 using the numerickeypad, the arrows, or the rotary knob. Press EnterSweep SettingsThese settings provide added control of the FOPS measurement.How to make additional sweep settings— Press Sweep 3— Then choose from the following:— Power Setup— Source Enable——ON Turn ON the internal source (required for FOPS).——OFF Turn OFF the internal source— Src Nom Power (-15 dBm default setting) Set output power to anarbitrary value at the source CW frequency. Then enter a value usingthe numeric keypad, the arrows, or the rotary knob. Press Enter— Num Points or Freq Step Size Both settings control the number of powersensor measurements between the Start and Stop frequencies. Enter onesetting and the other will be changed automatically. There must be at leasttwo data points.
