Instruction manual

100 Chapter 5
Setting Measurement Conditions
Manual Sweep (Measurement at a Specified Point)
Manual Sweep (Measurement at a Specified Point)
In the normal sweep mode, the Agilent 4294A performs measurement by automatically
changing the measurement point in response to triggering. When the set of measurements
performed is as many as the number of points, this is regarded as one sweep. On the other
hand, in the manual sweep mode the Agilent 4294A does not automatically change
measurement points (sweep), and the measurement at a single point specified by the user is
regarded as one sweep. Since the measurement point can be arbitrarily specified by the
user, this function can be called a user-defined manual sweep. The Agilent 4294A will
continue measurement (sweep) at the same point unless it is changed by the user. Follow
the steps below to execute the manual sweep.
Step 1. Press the
[Sweep] key to display the sweep menu.
Step 2. Press the
MANUAL SWP on OFF key to turn the manual sweep function ON. This changes
the softkey label to
MANUAL SWP ON off. At the same time, the current measurement
point “1” for manual sweep and sweep parameter value for the point are displayed in the
parameter settings area located in the upper left of the screen.
Step 3. Use the keys or the rotary knob in the ENTRY block in one of the following ways to
specify the measurement point (any integer value from 1 to the number of points).
• Enter the desired value with the numeric keys (
[0] to [9], [.], and [-]) and then press the
[´1] key.
• Turn the rotary knob (
m
mm
m) until the desired value is set.
• Press the step keys ([][¯]) to set the desired value.
NOTE Instead of directly setting the measurement point by using the keys or the rotary knob in the
ENTRY block, it can be set by moving the main marker to your desired point for the
manual sweep and pressing the
[Marker ®] - MKR ® MANUAL SWP keys. This operation
can assign the manual sweep point to the location of the main marker and is effective
before activating the manual sweep.
When you turn the sweep function ON and specify a measurement point, no measurement
is performed at the point as long as the sweep mode is disabled or the trigger is not
generated.
The number of points can be commonly set to traces A and B.