Agilent Technologies 4294A Instruction Manual download pdf (Page 201)

Chapter 7 193

Setting Up the Display of Measurement Results

Monitoring the dc Bias Level

7. Setting Up the Display of

Measurement Results

Monitoring the dc Bias Level

You can set a constant dc bias level through the keystroke sequence [Source] - BIAS

MENU - VOLTAGE LEVEL

or CURRENT LEVEL and also set the dc bias level for each

measuring point within the range of the dc bias level sweep by pressing the

[Start], [Stop],

[Center], and [Span] keys. All these settings are related to the output level of the Agilent

4294A's internal dc bias power source. In most cases, however, the dc bias level actually

applied to a DUT differs from the setting applied to the dc bias source because some

electrical loss occurs between each test terminal and the DUT.

The Agilent 4294A provides a feature that allows you to monitor either the voltage or

amperage value of the dc bias actually applied to the DUT. This feature is called the “dc

bias level monitor.”

Monitoring the dc Bias Level on a Real-time Basis

You can monitor the dc bias level (either voltage or amperage) on a real-time basis through

the dc Voltage/Current Bias Monitor field, which is located in the lower part of the LCD

and labeled “V/IDC,” “VDC,” or “IDC.” This field is updated each time a measuring point

is reached during the dc bias sweep.

NOTE If your sweep parameter is the frequency or signal source level rather than the dc bias level,

the dc Voltage/Current Bias Monitor field only indicates the monitored dc bias level

(voltage or amperage) for the first measuring point. In this case, therefore, the field is

updated each time a new sweep cycle is started.

Step 1. Start applying dc bias. For more information, refer to “Setting and Applying dc Bias” on

page 107.

Step 2. Press the

[Display] key to display the Display menu.

Step 3. Press the

BIAS MON [ ] key to display the Bias Monitor menu.

Step 4. To set up dc bias level monitoring, press one of the following keys:

NOTE Using the test dc bias level monitor feature in conjunction with manual sweep allows you

to both determine the characteristic value and monitor the dc bias level at your desired

measuring point. In manual sweep mode, you can monitor on a real-time basis the dc bias

level at any measuring point on the trace, whether or not your sweep parameter is the dc

bias level, because the Agilent 4294A finishes a sweep cycle when the specified measuring

point is reached. For more information on manual sweep, refer to “Manual Sweep

(Measurement at a Specified Point)” on page 100.

Once you have turned on or off the dc bias level feature, that setting is applied to both

To: Pres s:

Turn off dc bias level monitoring

OFF

Monitor the dc bias voltage level VOLT

Monitor the dc bias current level CURRENT

1 2 ... 196 197 198 199 200 201 202 203 204 205 206 ... 468 469

Comments to this Manuals

No comments

Agilent Technologies 4294A Instruction Manual Page 201

Comments to this Manuals

Related products and manuals for Multimeters Agilent Technologies 4294A