8566A/B, 8568A/B:
SP
SP
SP
?
real
UP
DN
OA
Programming Commands
SP Frequency Span
HZ 
;
KHZ
MHZ
GHZ
KZ
MZ
GZ
Step Increment: 1, 2, 5, 10 sequence (up to the stop frequency of the analyzer)
Legacy Products
8560 series, 8566A/B, 8568A/B
Description
Changes the total displayed frequency range symmetrically about the center frequency.
If resolution and video bandwidths are coupled to the span width, the bandwidths change with the span width to provide a predetermined level of resolution and noise averaging. Likewise, the sweep time changes to maintain a calibrated display, if coupled. All of these functions are normally coupled, unless RB (page 295), VB (page 347), or ST (page 318) have been executed.
