Agilent Technologies 4294A Instruction Manual download pdf (Page 203)

Chapter 7 195

Setting Up the Display of Measurement Results

Monitoring the dc Bias Level

7. Setting Up the Display of

Measurement Results

Step 5. 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

(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 dc bias level monitor feature.

Step 6. Press the

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

it is not already displayed.

Step 7. Press the

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

Step 8. Traces A and B are each associated with a field called “Marker Statistics/Trace Bandwidth

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

the corresponding trace is active. To activate Trace A or B, press the appropriate key:

Step 9. To set up marker-based level monitoring, press one of the following keys:

NOTE The setting you select for marker-based monitoring must match the setting for dc bias level

monitoring (step 4).

Step 10. 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 dc

Bias Level on a Real-time Basis” on page 193).

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

Monitor the dc bias voltage level VOLT

Monitor the dc bias current level CURRENT

To activate: Press:

Trace A

[A]

Trace B [B]

To: Press :

Turn off marker-based level monitoring

OFF

Monitor the dc bias voltage level DC-V

Monitor the dc bias current level DC-I

To: Pres s:

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Agilent Technologies 4294A Instruction Manual Page 203

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