Agilent Technologies 4294A Instruction Manual download pdf (Page 199)

Chapter 7 191

Setting Up the Display of Measurement Results

Monitoring the Test Signal Level (AC)

7. Setting Up the Display of

Measurement Results

(Trigger Source)” on page 111). Alternatively, you can use the continuous sweep mode by

implementing a free run trigger.

NOTE Marker-based level monitoring takes effect when you start a new sweep cycle after turning

on the test signal level monitor feature.

Step 4. Press the

[Utility] key to display the Utility menu. The main marker appears on the trace if

it is not already displayed.

Step 5. Press the

LEVEL MON [ ] key to display the Level Monitor menu.

Step 6. Activate the trace for which you want to monitor the signal level at the marker position.

Traces A and B are each associated with a field called “Marker Statistics/Trace Bandwidth

Analysis” that is used to display the signal level monitored at the marker position when the

corresponding trace is active.

Step 7. To set up marker-based level monitoring, press one of the following keys:

Step 8. Move the main marker to your desired measuring point on the trace. The Marker

Statistics/Trace Bandwidth Analysis field for the activate trace indicates the test signal

level monitored at the marker position.

NOTE Marker-based monitoring works using the same mechanism as, but provides level values in

higher resolution (more digits) than, real-time monitoring (described in “Monitoring the

Test Signal Level on a Real-time Basis” on page 189).

Although marker-based level monitoring uses separate display fields for Traces A and B, it

does not depend on the active trace, and provides the same level value regardless of which

trace is currently active. You can use Trace A's display field to monitor the test signal

voltage level while using Trace B’s display field to monitor the test signal current level.

Also, you can use the display field for Trace A or B to monitor either the dc voltage bias

level or the marker-based dc current bias level, but not both. For more information on

marker-based dc bias level monitoring, refer to “Monitoring the dc Bias Level” on page

193.

The Marker Statistics/Trace Bandwidth Analysis field for each trace is used to display one

of three types of information: (1) the level value monitored at the marker position, (2) the

marker statistics, and (3) the results of trace bandwidth analysis; the parenthesized

numbers denote the precedence among these information types when more than one of

them are enabled at the same time.

To activate: Press:

Trace A

[A]

Trace B [B]

To: Press :

Turn off marker-based level monitoring

OFF

Monitor the test signal voltage level AC-V

Monitor the test signal current level AC-I

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Agilent Technologies 4294A Instruction Manual Page 199

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