Setting Measurement Conditions

Before starting the measurement, you must set the measurement parameters and sweep conditions according to your measurement requirements. This section describes the setup procedure for the following measurement.

Frequency characteristics of εr' - εr" - tanδ

First you should change the measurement conditions from the initial state of the E4991B as shown in the below table.

 Parameter setting

 Setup example

 Initial state

Measurement parameters

Trace 1

εr'

εr'

Trace 2

εr"

εr"

Trace 3

tanδ

tanδ

Display formats

Trace 1

Linear

Linear

Trace 2

Linear

Linear

Trace 3

Linear

Linear

Sweep parameter

Frequency

Frequency

Sweep type

Log

Linear

Source mode

Voltage

Voltage

Oscillator level

100 mV

100 mV

Sweep range (frequency)

1 MHz to 1 GHz

1 MHz to 3 GHz

Presetting and Setting Measurement Parameters and Display Formats

  1. Press Display > Num of Traces > 3.

  2. Press Meas > Trace 1 > εr'.

  3. Press Format > Y-Axis > Linear.

  4. Similarly, set Trace 2 > εr" with Y-Axis > Linear and Trace 3 > tanδ with Y-Axis > Linear.

Setting Measurement Points, Sweep Parameter and Sweep Type

  1. Press Sweep Setup > Sweep Type > Log Freq.

Setting the Source Mode and Oscillator Level

  1. Press Sweep Setup > Osc Level > Osc Unit > Voltage.

  2. Press Sweep Setup > Osc Level > Voltage Level > 100 > k/m.

Setting the Sweep Range (Frequency)

  1. Press Start > Start > 1 > M/μ.

  2. Press Stop > Stop > 1 > G/n.