HP 8508A - Page 45

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Et Operation
5.
Convert
the
modulation
envelope
phase
change
(which
is
shown
on
Display
2)
to
delay,
using
the
following
formula:
: d (phas
t@
=
_4
(phase)
f (m) x 360deg
where:
t(d)
-
=
delay
in
seconds
es
d(phase)
=
envelope
phase
shift
in
degrees
f
(m)
‘=
modulation
frequency
in
Hz.
In
this
case,
the
modulation
source
is
20kHz.
Substituting
this
in
the
formula
gives:
d (phase)
te) 72E +6
E1089
3.21