China Electronics Technology Instruments AV3672 Series, User Manual

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Appendix
Appendix 3 Frequency Offset Measurement
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Start frequency=[main start frequency*(multiplier/divisor)]+frequency offset
Stop frequency=[main stop frequency*(multiplier/divisor)]+frequency offset
➢
Frequency Offset : set the frequency offset in Hz. The deviation of mixer measurement is LO frequency.
The frequency offset range is ±1000GHz.
➢
Multiplier : set the multiplier, ±1000.
a) If the multiplier is negative, the source sweep frequency is from high frequency to low frequency. For the lower
variable-frequency mixer, the set value of input power should be lower than the LO frequency.
b) If the set multiplier is 0, the start frequency is equal to the frequency offset.
➢
Divisor : set the divisor value between 1 and 1,000.
3.2.2 Setting of Non-coupling Mode
Fig. 3.4 [Non-coupling setting] Dialog Box
Various setting windows are set for different sweep types. The setting items of each kind of sweep frequency are
respectively introduced below.
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Lin and log sweep : select the start frequency or center frequency and set the number of sweep points.
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Power sweep : set the center frequency and the number of sweep points.
➢
CW : set the CW frequency and sweep time.
➢
Segment sweep : the flexible measurement configuration function is set for segment sweep in the non-
coupling mode. Pay attention to the following items in the segment sweep setting.
Fig. 3.5 [Segment sweep setting] Dialog Box
1) Click OK when the total number of sweep points of the effective segment is equal to the total number of channel
sweep points.