HP 8642A Operation And Calibration Manual page 79

Model 8642A/B
Operation
RF Frequency (cant'd)
Related
Operating
Instructions
Refer to Relative RF Frequency (page 3-45) for information on designating a
particular frequency as a reference frequency and on displaying all subsequent RF
frequencies as offsets from that reference.
Refer
to
RF Frequency Sweep (page 3-49) for information on selecting a frequency
sweep.
Refer to Knob (page 3-141) and Step, Increment Set (page 3-149) for information on
using these to modify settings
Refer to Operating Messages (page 3-)
77)
if the instrument displays a message you
want clarified.
Refer to Special Functions (page 3-165) for information about the way these are
accessed.
3-43