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Chapter 1 329
GPIB Command Dictionary
SANalyzer subsystem
:MASK:RELative:UPPer:POINts:FREQuency1 (through FREQ15)
:MASK:RELative:UPPer:POINts:FREQuency1? (through FREQ15)
These commands set/query the frequency (Hz) of the defined points on
the upper spectrum analyzer mask.
The units for the mask are GHz, MHz, kHz, and Hz.
Syntax
To define the frequencies in a four-point mask:
SAN:MASK:REL:UPP:POIN:FREQ1 <real number>
SAN:MASK:REL:UPP:POIN:FREQ2 <real number>
SAN MASK:REL:UPP:POIN:FREQ3 <real number>
SAN:MASK:REL:UPP:POIN:FREQ4 <real number>
SAN:MASK:REL:UPP:POIN:FREQ1?
Screen/field equivalent
SAN:MASK:REL:UPP:POIN:FREQ1 controls the Freq Ofs field on the
Mask menu of the SPEC ANL when the EditPt field is set to 1, the Edit
Mask field is set to Upper, and the Mask Type field is set to Rel.
:MASK:TYPE
:MASK:TYPE?
This command selects/queries the type of mask, fixed or relative. ‘Fixed’
sets the mask in absolute frequency and level points. ‘Relative’ sets the
mask relative to the center frequency and reference level set with the
SAN:CFR and SAN:RLEV commands. If the center frequency is
changed after setting the mask, the mask remains in the same position
on the screen, and measurements are now relative to the new center
frequency and reference level.
Syntax
SAN:MASK:TYPE ‘Fix’
‘Rel’
SAN:MASK:TYPE?
Screen/field equivalent
SAN:MASK:DISP controls the Mask Type field on the Mask menu of the
SPEC ANL screen.