Setting Baseband Noise Measurement

Follow the steps below to measure the baseband noise by using the E5052B’s baseband noise measurement window.

Selecting Measurement Window

1. Press Meas/View > Baseband Noise to select the baseband measurement window.

2. You can maximize the Baseband Noise measurement window by pressing the Window Max key while the window is selected. You can return to the original size when you press the Window Max key once again.

Setting Trigger

Setting Averaging Trigger

Discharge of DC Block Capacitor

E5052B has two types of Block capacitors. Press Setup > Discharge DC Block Capacitor to discharge the DC block capacitors.

• This option is available only when trigger mode is set as baseband noise.

Setting IF Gain

"IF over flow" error may be displayed when baseband is distorted. On the other hand, internal noise level of the instrument may be significant in the measurement display when the DUT has a low-noise characteristics. In this case, follow the steps below to adjust the IF Gain value:

1. Press Setup > IF Gain.

2. Enter the IF Gain value in the data entry field that appears in the upper part of the screen.
   
   You can select the value from the options: 0 dB, 10 dB, 20 dB, 30 dB, 40 dB or 50 dB.

Selecting Measurement Quality

1. Press Setup > Measurement Quality.

2. Select the appropriate quality level from the softkey menu list. The available options are Normal and Fast.

3. To obtain the outline of the measurement data, select “Fast” for the quality level. If you need more precise frequency resolution, select “Normal” for the quality level.

Selecting Cutoff Frequency

1. Press Setup > Cutoff Frequency > Low | High

• Low Frequency DC Block capacitor 1410µF, High Frequency DC Block capacitor 10µF

Specifying Sweep Range for Offset Frequency

1. Press Start/Center (Stop/Span) > Start.

2. Select the sweep start value from the softkey menu list.
   
   You can select the value from the options: 1 Hz, 10 Hz, 100 Hz or 1 kHz.

3. When Cutoff frequency is High only 1kHz is available as the sweep range for offset frequency.  

3. Press Stop/Span  (Start/Center) > Stop.

4. Select the sweep stop value from the softkey menu list.
   
   You can select the value from the options: 100 kHz, 1 MHz, 5 MHz, 10 MHz, 20 MHz, 40 MHz, 100MHz.

Setting Average Function and Correlation Number

About DC Voltage Setting and Protection

You can specify DC power/control which is applied to DUT. Refer to Setting DC power/DC control and protection for the setting procedure.