190 Chapter 7 
Setting Up the Display of Measurement Results
Monitoring the Test Signal Level (AC)
Figure 7-25  Monitoring signal source level (voltage/current) with manual sweep enabled
Using the Marker Feature to Determine the Test Signal Level
You can use the main marker to determine the test signal level at your desired point on the 
trace. Once you have turned on the test signal level monitor feature, the Agilent 4294A 
preserves the test signal level value monitored for each measuring point on the trace during 
the sweep cycle. This allows you to identify the signal level monitored for each measuring 
point even with the sweep cycle in the hold state. 
NOTE You can place the marker at any measuring point on the trace to determine the signal level 
monitored at that point, regardless of whether your sweep parameter is frequency, signal 
source level, or dc bias level.
Step 1. Press the 
[Display] key to display the Display menu. 
Step 2. Press the 
OSC MON on OFF key to turn on the test signal level monitor feature (pressing 
the key toggles your selection).
Step 3. If the sweep cycle is currently in the hold state, specify the number of sweep cycles (see 
“Specifying Sweep Times and Stopping Sweep” on page  114) and then start testing the 
DUT by specifying the trigger source (see “Selecting a Method to Start Measurement 
Softkey Labels Description
OSC MON ON off Indicates that the test signal level monitor 
feature is enabled.
OSC MON on OFF Indicates that the test signal level monitor 
feature is disabled.