Specifications

64 Chapter 3

Setting Measurement Conditions

Combination of Several Sweep Conditions (Segment Sweep)

The Agilent E4991A allows you to set combinations of up to 16 segments, each with its

own sweep conditions, to perform segment sweep. A segment sweep table must be created

before segment sweep can be performed.

Create/Edit Segment Sweep Table

The segment sweep table can be created or edited in two ways: specifying each segment

parameter individually or specifying parameters collectively.

Display Segment Sweep Table

Use the following GPIB command to display the sweep conditions on the segment sweep

table.

• DISP:TEXT{1-3}:SET on page 356

Create Segments and Read Total Number of Segments

To create a segment, use the following GPIB command to create the specified number of

segments in the segment sweep table to make them available for editing. This command

clears the existing segments and creates new segments. When this command is used in the

query format, the total number of segments contained in the table is read.

• SEGM:COUN on page 397

Delete All Segments

Use the following GPIB command to delete all of the segments in the segment sweep table.

• SEGM:DEL:ALL on page 406

Select Oscillator Level Unit

Use the one of the following GPIB commands to select the unit (current/voltage/power) in

which the oscillator level is set when the segment sweep table is created.

Select DC Bias Output Mode (DC Bias Function)

When the dc bias function is used, use one of the following GPIB commands to select

whether the dc bias output level is set to the fixed voltage or fixed current source mode

when the segment sweep table is created.

Oscillator level GPIB command

Set in current SEGM:CURR:STAT on page 402

Set in voltage SEGM:VOLT:STAT on page 418

Set in power (dBm) SEGM:POW:STAT on page 412

Output mode GPIB command

Fixed current source mode SEGM:CURR:OFFS:STAT on page 399

Fixed voltage source mode SEGM:VOLT:OFFS:STAT on page 417