HP 3048A Operating Manual page 105

1. Estimate the system's Capture Range (using the
VCO source parameter values entered for
this measurement):
Capture Range [Hz) =
VC0 Tuning Constant
(
g
«ffi
x VCO Tuning Range
W
Capture Range (Hz) = {Hz/v)x (Q
= R z
2. As you observe the beatnote on the HP 3561A in the
frequency domain, reduce the beatnote until it is to
the left of the first major graticule on the screen.
Adjust the beatnote by incrementing the center
frequency of the HP 8662/3A in 10 kHz steps or less.
3. Continue reducing the beatnote frequency until the
time domain display shows less than one full cycle
across the screen.
Signal Source Applications 3-55