HP 83751A User Manual page 129

Frequency Keys
All the frequency functions, with the exception of the multiplier setting (see
entries must be terminated using one of the four frequency-unit keys (m,
new value, autoranged to the appropriate units.
For Start/Stop and CF/Span Sweep modes, the frequency values are shown
on the left and right sides of the FREQUENCY display, in the format <digits>
<units>. Units can be either MHz or GHz. Leading zeros are suppressed.
For CW mode, the frequency is shown in the FREQUENCY display in the
format <digits> <units>. Units can be either MHz or GHz. Leading zeros are
suppressed.
11-2
Figure 1 l-l. The Frequency Group