Anritsu MG3641A - Manual (Page 50)

SECTION 4 OPERATING INSTRUCTIONS
4.4.3 Frequency Offset
Frequency offset means a function to offset a set frequency and a displayed frequency against the frequency to be
actually output.
When the frequency offset is activated, each frequency value will be expressed by the following equation:
[Actual Frequency] = [Set/Displayed Frequency]
− [Frequency Offset Value]
For example, if you set the frequency to 1 GHz after setting the frequency offset value to +10 MHz, the display will
indicate 1 GHz, but the actual output frequency will be 990 MHz.
To set a frequency offset value, follow the procedure detailed below:
(1) Press the "Ofs" [F4] key in the main menu (1) to open
the "Offset" menu.
(2) Select "Frequency offset value" by pressing the "
↓" [F2]
key (the frequency value will be highlighted).
(3) Set a frequency offset value by the number keys, and
the step keys and rotary knob in the Edit zone.
While the frequency offset condition lasts, the characters "F-Ofs" appear on the Frequency indicator, indicating that
the signal generator is in frequency offset state.
To clear the frequency offset state, you enter 0 Hz by following the procedure already described for setting a
frequency offset value.
If you need to verify the actual output frequency while the frequency offset state continues, press the [Shift] key
and, then, keep on holding down the [Rel Freq] (Cur Dspl) key. This will allow the actual output frequency to
appear temporarily on the display.
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