HP 3336A Operating Manual page 33

3-12
3-63. Single Sweep Execution.
3-64. The Single Sweep has a two step execution cycle. To begin a Single Sweep:
SINGLE
Press to set the output and display to the Start Frequency
and reset the X-axis drive.
SINGLE
Press |L° again, to start the sweep. The light in the center of
this key will be on when the instrument is sweeping.
After a Single Sweep stops, the output and display remain at the Stop Frequency until the
cycle is initiated again. The X-axis drive remains at its maximum value (+ 10.5 Vdc).
NOTE
The actual stop frequency at the end of a single sweep may be
slightly higher than the programmed value.
3-65. Sweep Entry.
3-66. To exactly set any of the sweep parameters, press the appropriate sweep parameter en-
try key, and then enter the numerical value followed by the appropriate units key. To change
TINE
from linear to log or log to linear sweep mode, press the BLUE shift key followed by fo} :
The light to the lower right of this key will be on when the instrument is in the logarithmic
sweep mode.
3-67. Continuous Sweep Execution.
3-68. Press to start a continuous sweep. The light in the center of this key will be on
when the instrument is sweeping. In the Linear Sweep Mode, the instrument will sweep from
the Start Frequency to the Stop Frequency in the programmed time and then sweep back to
the Start Frequency. In the Log Sweep Mode, the instrument will sweep from the Start Fre-
quency to the Stop Frequency in the programmed time, immediately reset to the Start Fre-
quency and continue the cycle.
NOTE
The Stop Frequency must be greater than Start Frequency when
the instrument is in the Log Sweep Mode.
3-69. Log Sweep.
3-70. The Single Log Sweep is a logarithmic approximation made up of 10 linear segments
per decade. The minimum log sweep width is one decade of frequency.
NOTE
The actual Stop Frequency at the end of a Single Log Sweep, will
be higher than the programmed value because of computation
time required by the control circuits. The actual value will always
be within 0.25% of the programmed value and the error will
decrease as the sweep time increases.