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(3) Oscillator Level (Current) Characteristics of Ls-Q
You should first change the measurement conditions from the initial state of the E4991A as
shown in Table 3-5.
Table 3-5
Parameter Setting
Measurement
parameters
Display formats
Measurement points
Sweep parameter
Sweep type
Source mode
CW frequency
Sweep range (frequency)
Presetting the E4991A
Preset the E4991A to the initial state by referring to the procedure described in "Presetting
the E4991A" on page 46.
Setting the Measurement Parameters and Display Formats
Step 1. Click
Meas/Format...
Step 2. Specify Trace 1 as the active trace (* mark) as shown in Figure 3-9 and Figure 3-10.
Step 3. Select
in the
Ls
Meas Parameter
Step 4.
box is set to
Format
Step 5. Specify Trace 2 as the active trace (* mark) as shown in Figure 3-9 and Figure 3-10.
Step 6. Select
in the
Q
Meas Parameter
Step 7.
box is set to
Format
Chapter 3
Basic Operations for RF Devices Measurement
STEP 2. Setting Measurement Conditions
Setup example for this measurement
Setup example
Trace 1
Ls
Trace 2
Q
Trace 1
Linear
Trace 2
Linear
201 points
Oscillator level
Linear
Current
100 MHz
100 μA to 10 mA
on the
menu (Figure 3-8).
Meas/Format
box (Figure 3-12).
in the initial state.
Lin Y-Axis
box as shown in Figure 3-12.
in the initial state.
Lin Y-Axis
Initial state
|Z|
θz
Linear
Linear
201 points
Frequency
Linear
Voltage
1 MHz
4 mA to 8 mA
55
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