B&K Precision 2658A - Manual - Manual (Page 50)

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* The measured value and the setting parameter are displayed at the lower part of the screen.
• Definition of Reference Carrier for each Mode
1. By (ACP OFFSET) , the
offset frequency of adjacent channel is set.
* The offset is from the center frequency of the reference
carrier.
2. By (ACP WIDTH) , the
band width of adjacent channel is set.
3. By (REFERENCE CENTER) ,
the center frequency of the reference carrier is set.
* [F4] is only for TOTAL and BAND mode.
4. By (REFERENCE WIDTH) ,
the band width of reference carrier is set.
* [F5] is only for BAND mode.
[Measured value] [Setting parameter] [Measuring mode]
F2
F3
F4
F5
TOTAL (total power method)
This is based on the sum of power in the
displayed spectrum. The center frequency
of the reference carrier is set by [F4].
BAND (in-band method)
This is based on the sum of power in the
specified bandwidth. The center
frequency of the reference carrier is set by
[F4].
PEAK (reference level method)
This is based on the power of peak on the
screen. The center frequency of the
reference carrier is automatically set to the
peak on the screen.