Site Masterâ„¢ S331L User Guide : High Accuracy Power Meter : General Measurement Setup : Set the Measurement Frequency
 
Set the Measurement Frequency
Press the Frequency main menu key then press Measurement Frequency. Set the frequency of source using the numeric keypad then select the unit of measure button. Failure to set the frequency will cause inaccurate measurements.
Setting the Amplitude
The maximum and minimum values of the analog display can be set in the Amplitude menu. Relative Power is a useful feature to obtain the power reading with respect to a previous power level.
1. Press the Amplitude main menu key.
2. Press the Max Value submenu key and set the upper scale value. Press the Min Value submenu key and set the lower scale value.
or
Press the Autoscale submenu key to adjust the range automatically. The current power level will be centered with Min Value automatically set at 90% of the current power and Max Value automatically set at 110% of the current power. Refer to Figure: Autoscale to Zoom In on a Measurement.
 
Autoscale to Zoom In on a Measurement
Changing the Display Units
The power meter scale can be displayed in dBm or Watts. Use the following procedure to change the displayed units:
1. Press the Amplitude main menu key.
2. Press the Units submenu key and select the display units.