HP 8642A - Page 224

OperatIOn
Model S642A/B
Operating Messages (cont'd)
TURN OFF SWEEP FIRST .E46
4046
Turn off frequency sweep first To access Special function 123 (Phrtse Continuolls Frequency Sweep),
turn off the st<l.rt <l.nd the stop frequency that was set for the Stepped Frequency Sweep. If this solution
does not. apply to your attempted setting, refer to the Sequence Dependency discussion that begins on page
3-12 in the HP-IB portion of this Section III,
HP-IB Send FAOlo FEOF before SPI23.
FREQ SWP + SP8 UMIT .E47 4047
Stepped Frequency Sweep cannot sweep ill the auto sweep mode across 132,187500 MHz with Special
Function S (Prefer Heterodyne Bann) selected. EIther select Special Function 20S (Prefer Divide Bands),
or select manual or single sweep, or refer to the Sequence Dependency discussion that begins on page 3-12
In the UP - m portion of this Section III,
FR.SWP~~SP223 J. iMITTiME .E48 4048
Special Function 223 (Stepped Frequency Sweep) limits the ml11imum sweep time that can be selected,
Either turn off frequency sweep (HP-IB: FA OF FBOF) before setting the sweep time, or refer to the
Sequence Dependency discussion that begins on page 3-12 in the HP- JB portion of this Section III.
FREQ.SWP-foSV'iP.TIME
LIMIT .!E49 4049
The start or stop frequency setting is limited by the currently selected combination of:
Phase Continuous Frequency Sweep (Special Function 123), and the current sweep time setting, and
possibly the current start and stop frequency settings, and possibly Special Function 8 (Prefer Heterodyne
Band) and FM
To resolve this error, either
I) turn off frequency sweep (HP-IR FA OF FBOF) and then possibly select Stepped Frequency Sweep
(SpeCIal FUIlction 223), or
2) select a valid sweep time setting (refer to RF Frequency Sweep, page 3-60), or
3) possibly turn off I'M or select SpeCIal Function 20S (Prefer Divide Bands), or
4) refer to the Sequence Dependency dIscussion that begins on page 3-12 in the HP-JB portion of tillS
Section III
SP123 LIMITS MIN TIME .ESO 4050
The min,11lum sweep time that can be selected is limited by the currently selected combination of:
Phase Continuous Frequency Sweep (Special Function 123), and
the current start and stop frequency settings, and possibly
Special Function 8 (Prefer Heterodyne Banel) and PM
To resolve t his error, ei ther
1) turn off frequency sweep (HP-IB: FAOF or FROF) and then possibly select Stepped Frequency Sweep
(Special Function 223), or
2) select a valid sweep time setting (refer to RF Frequency Sweep, page 3-60), or
3) possibly turn off FM or select Special Function 2 OS (Prefer Divide Bands), or
4) refer to the Sequence Dependency discussion that begins on page 3-12 in the HP-IB portion of this
Section III
SP123 LIMITS MAX TIME .ES1
The maximum sweep time that can be selected is limited by the currently selected combination of:
Phase Continuous Frequency Sweep (Speci::ll Function 123), and
the current start and stop frequency settings, and possibly
Special Funclloll 8 (Prefer Heterodyne Banel) and FM.
To resolve this errol, either
4051
1) turn off frequency sweep (HP-IB: FA OF FEOF) and then possibly select Stepped Frequency Sweep
(Special Function 223), or
3 -188