HP 8642A Operation And Calibration Manual page 99

Model 8642A/B Operation
RF Frequency Sweep (cont'd)
Example for Phase Continuous Frequency Sweep (cont'd)
DATA
SWEEP SWEEP
~
[JOJ
CD
OJ
START
8 AUTO
FRED
START
I
AMFTD .
I
SWEEP
DATA
LOCAL
I
(keys)
( SHIF'
I
TIME
OJ
OJ
[]J
m,
[START
I
GD
fREO
mV
!
SWEEP
DATA
SWEEP
DATA
STAAT
CD IT] OJ 0
OJ C!'J
~ 1121IT]OJDOJ~
FREO
fREO
:
~
(program
SP123
FASA ST
800 MS
FA
250.2 MZ
FB
250.3 MZ'
cDdes)
*
These codes are not independent and might need to follow a specific sequence for
entry. Refer to the discussion about Sequence Dependency, which begins on page 3-12 in
the HP-IB portion of this Section III.
Display
T
(2
5 0.3 0 0 0 0 0
m z
STAR.T
FREO SPCL SWPNG STOP
The display usually shows the start frequency and the stop frequency settings. If another
active function is selected, the display could indicate frequency sweep with the SWPNG
annunciator or by displaying FRQ SWEEPING in the left portion of the display above
the FREQ annunciator. The SPCL annunciator is also displayed. To see that Phase
Continuous FrequeIlcy Sweep has indeed been selected, access the SPCL display (
( SHIFT)
0)
(Press thE' (SHfFT"] key twice to return the display to the current
instrument settings if desired.)
You can turn off the Phase Continuous Frequency Sweep mode by first stopping the
actual sweep (for example with mART FREQ) [OFF ON) (STOP FREq]
( OFF ON) ; HP-IB codes: L\OF and FBOF) and then by selecting Phase ContiIluous
Frequency Sweep Off (Special Function 22 3).
3-63