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S:\Hp8960\Generic Documents\Manual Operation Getting Started Guide\Pi_manual operation getting started guide\chapters\gsm_man_measurements.fm 
GSM Mobile Measurements
14.Press the Graph (F5) key then the Modulation (F1) key to access the ORFS due 
to modulation bar graph. 
A typical ORFS due to modulation graph is shown above. On the display, the bar 
representing each offset is shown in yellow and the center frequency is indicated 
by a red vertical line.
15.Press the Switching (
F2) key to access the ORFS due to switching bar graph. 
A typical ORFS due to switching graph is shown above. On the display, the bar 
representing each offset is shown in blue and the center frequency is indicated by 
a red vertical line.
Frequency 
offsets
Center 
frequency
Marker 
signal 
level and 
offset 
frequency
Marker 
indicator