HP 8642A - Page 208

Operation
Model 8642A/B
Operating Messages (cont'd)
TURN OFF SWEEP FIRST E46 4046
Turn off frequency sweep first. To access Special Function 123 (Phase Continuous Frequency Sweep),
turn off the start and 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
3-1 2 in the HP-IB portion of this Section III,
HP-IB: Send FAOFFBOF before SP123.
FREQ SWP + SP8 LIMIT .E47 4047
Stepped Frequency Sweep cannot sweep in the auto sweep mode across 132.187500 MHz with Special
Function 8 (Prefer Heterodyne Band) selected. Either select Special Function 208 (Prefer Divide Bands),
or select manual or single sweep, or refer to the Sequence Dependency discussion that begins on page 3-12
in the HP-IB portion of this Section III.
FR.SWP+SP223 LIMIT/TIME .E48 4048
Special Function 223 (Stepped Frequency Sweep) limits the minimum sweep time that can be selected.
Either turn off frequency sweep (HP-IB: FAOF FBOF) before setting the sweep time, or refer to the
Sequence Dependency discussion that begins on page 3-12 in the HP-IB portion of this Section III.
FREQ.SWP+SWP.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
1) turn off frequency sweep (HP-IB: FAOF FBOF) 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 208 (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 MEN TIME .E50 4050
The minimum sweep time that can be selected is limited by the currently selected combination of:
Phase Continuous Frequency Sweep (Special Function 12 3), and
the current start and stop frequency settings, and possibly
Special Function 8 (Prefer Heterodyne Band) and FM.
To resolve this error, either:
1) turn off frequency sweep (HP-IB: FAOF or FBOF) 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 208 (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 E51 4051
The maximum sweep time that can be selected is limited by the currently selected combination of:
Phase Continuous Frequency Sweep (Special Function 12 3), and
the current start and stop frequency settings, and possibly
Special Function 8 (Prefer Heterodyne Band) and FM.
To resolve this error, either:
1) turn off frequency sweep (HP-IB: FAOF FBOF) and then possibly select Stepped Frequency Sweep
(Special Function 223), or
3-188