HP 3336A - Page 32

Model 3336A/B/C
3-56. To select Amplitude Blanking, press the BLUE shift key and then press . The
BLANK
AMPTD BLANK annunciator will be lit when the instrument is in the Amplitude Blanking
Mode. Even though the Amplitude Blanking Mode is selected, the output signal will not be
affected if the frequency is changed using the Modify Group (tuning knob). Fast Leveling
and Amplitude Blanking are mutually exclusive operating modes. That is, the instrument
will automatically return to Normal Leveling when Amplitude Blanking is selected and, con-
versely, when Fast Leveling is selected, Amplitude Blanking is removed. To return to Nor-
mal operation, press the BLUE shift key followed by ;
NORM
3-57. Phase Entry.
3-58. The phase of the output signal may be shifted up to + 719.9° with 0.1° resolution. To
enter a phase shift, press the PHASE entry key, followed by the exact number sequence of
PHASE
the desired phase shift and then the units key. Press the — key before entering the
number of degrees for negative phase shifts.
3-59. After entering a phase shift, the new phase may be assigned the zero phase position.
Subsequent changes in phase will be referenced to this point, extending the 719.9° offset
limit. To assign zero phase, press the BLUE shift key followed by the PHASE entry key.
3-60. Frequency Sweep.
3-61. The Model 3336 produces phase continuous, logarithmic or linear, single or con-
tinuous frequency sweeps over its entire frequency range. Three auxiliary outputs provide
sweep related X-axis drive, Z-axis blanking and frequency marking for X, Y axis presenta-
tions of the frequency sweep. A special ‘‘ZOOM”’ feature can quickly position and expand a
point of interest in the sweep display.
NOTE
“F. bound Err.’’ will be displayed for 1 second after a sweep is
started if either the Start or Stop frequency is outside the specified
frequency limits of the output selected. .
3-62. At instrument Turn-on, the sweep parameters are:
Sweep: Mode 56 ios este wd hate oecaaele 4 ohn ane eee Linear
Start Frequency. ....... 0... ccc cece ee eee ees 1 000 000.0 Hz
Stop Frequency. ....... 0... cece cee eee eee eee 10 000 000.0 Hz
Marker Frequency........... 0... cece eee e eee 5 000 000.0 Hz
TAME Soe hk eo eRe eRe SG SMES We ae ewan t eee US 1.0 Sec
Operation