B&K Precision 2658A - Manual - Manual (Page 72)

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6) Setting RBW
Command : RBW* * *
2650A, 2652A, 2658A :
( * * * * = 3K, 10K, 30K, 100K, 300K, 1M, 3M, AUTO, ALL [ unit : Hz ])
2651 :
( * * * * = 3K, 9K, 30K, 120K, 300K, 1M, 3M, AUTO, ALL [ unit : Hz ])
* ALL : The optimum RBW, VBW, and sweep time are set based on the frequency
span.
* AUTO : The optimum RBW is set based on the frequency span.
Example: RBW3M
Query: RBW?
7) Setting VBW
Command : VBW* * * *
( * * * * = 100, 300, 1K, 3K, 10K, 30K, 100K, 300K, 1M, AUTO, ALL [ unit : Hz ] )
* ALL : The optimum RBW, VBW and sweep time are set based on the frequency
span.
* AUTO : The optimum RBW is set based on the frequency span.
Example: VBW300
Query: VBW?
8) Selecting Measuring Function
Command : MEAS* * *
(* * * = CP, ACP, OBW, EF, MF,
FC, OFF)
Example: MEASOBW
(To change measuring function when in
a different measurement mode, set function OFF first by sending MEASOFF)
Query: MEAS?
9) Request measuring result
Command : MEASRES
* Example of measuring result
Channel power measurement ----- POW: - 25.5 dBm
Adjacent channel power measurement ----- L: - 47.7 dBc U: - 48.3 dBc
Occupied bandwidth measurement ----- C: 1.45 G W: 20.00 k
Frequency counter ----- FC: 2400.0000 M
* If the frequency counter is not installed, “Invalid for F/C” is responded.
* If the level of spectrum is low and unmeasurable, “Non Signal” is
responded.
Command Measuring function
CP Channel power measurement
ACP Adjacent channel power measurement
OBW Occupied bandwidth measurement
EF Electric field strength measurement
MF Magnetic field strength measurement
FC Frequency counter (factory option)
OFF OFF