Berkeley Varitronics Systems YellowFrog 2 Wideband Manual page 5

repeat steps 2 and 3.
5. Proceed with unit setup by entering: frequency (in MHz), power offset (, signal type and units
of measurement in the "UNIT SETUP" compartment of the user interface window and press the
"SET" button. Once set, these parameters will be "remembered" by the YF2 unit even if the
unit is turned OFF and ON again. The current values of these parameters will be displayed on
the lower right hand side compartment of the YF2 Power Meter window, as seen in Figure 1
above. To change them, enter new values by repeating this step.
6. Connect the YF2 unit input side (this is the side with the power switch and engraved serial
number of the YF2 unit) to the RF source and the output side (this is the side with the USB
port) to a 50 Ohm load or termination.
7. To start reading power level, click the "START REPORTING" button. This will result in the
flashing of the indicator "
power level in dBm and/or Watts next to the "Current Reading" label. The frequency and power
offset settings of the YF2 unit will also be displayed next to their respective labels. To stop
reading, press the "STOP REPORTING" button.
8. To record the measured data, left-click the "Browse" button at the bottom compartment in the
YF2 Power Meter window and create a "log" file in the desired directory by pressing "Save"
and checking the box in front of "Write to Current Log File" as seen in Figure 2 below. As long
as the "START REPORTING" button is pressed, the data will be recorded, accompanied by the
flashing of the label" Log" in green background. To stop recording (and/or reporting), press the
"STOP REPORTING" button.
Figure 2. Initiating the Log File for Recording Measured Data
NOTE:
When used with a PC (or laptop or notebook), the unit Power Switch does not have to be turned on,
because it will use power from the 5VDC supply available from the computer's USB port. However,
Power Report " in green background and the display of measured
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